ARSN-69 Remove ignore of build for NPM

Installing from git sources for dependents produced only an index.js 
file. It was due to .gitignore ignoring the build folder and npm/yarn 
removing the ignored files after install. Adding an empty .npmignore 
solves the problem. This can be found here: 
https://stackoverflow.com/questions/61754026/installing-npm-package-with-prepare-script-from-yarn-produces-only-index-js

.eslintrc

@@ -1,6 +1 @@
-{
-    "extends": "scality",
-    "parserOptions": {
-        "ecmaVersion": 2020
-    }
-}
+{ "extends": "scality" }

.github/workflows/codeql.yaml

@@ -1,25 +0,0 @@
----
-name: codeQL
-
-on:
-  push:
-    branches: [development/*, stabilization/*, hotfix/*]
-  pull_request:
-    branches: [development/*, stabilization/*, hotfix/*]
-  workflow_dispatch:
-
-jobs:
-  analyze:
-    name: Static analysis with CodeQL
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v4
-
-      - name: Initialize CodeQL
-        uses: github/codeql-action/init@v3
-        with:
-          languages: javascript, typescript
-
-      - name: Build and analyze
-        uses: github/codeql-action/analyze@v3

.github/workflows/dependency-review.yaml

@@ -1,16 +0,0 @@
----
-name: dependency review
-
-on:
-  pull_request:
-    branches: [development/*, stabilization/*, hotfix/*]
-
-jobs:
-  dependency-review:
-    runs-on: ubuntu-latest
-    steps:
-      - name: 'Checkout Repository'
-        uses: actions/checkout@v4
-
-      - name: 'Dependency Review'
-        uses: actions/dependency-review-action@v4

.github/workflows/tests.yaml

@@ -25,18 +25,18 @@ jobs:
           - 6379:6379
     steps:
     - name: Checkout
-      uses: actions/checkout@v4
-    - uses: actions/setup-node@v4
+      uses: actions/checkout@v2
+    - uses: actions/setup-node@v2
       with:
         node-version: '16'
         cache: 'yarn'
     - name: install dependencies
-      run: yarn install --frozen-lockfile --prefer-offline --network-concurrency 1
+      run: yarn cache clean && yarn install --frozen-lockfile
       continue-on-error: true # TODO ARSN-97 Remove it when no errors in TS
     - name: lint yaml
       run: yarn --silent lint_yml
     - name: lint javascript
-      run: yarn --silent lint --max-warnings 0
+      run: yarn --silent lint -- --max-warnings 0
     - name: lint markdown
       run: yarn --silent lint_md
     - name: add hostname
@@ -44,11 +44,7 @@ jobs:
         sudo sh -c "echo '127.0.0.1 testrequestbucket.localhost' >> /etc/hosts"
     - name: test and coverage
       run: yarn --silent coverage
-    - name: run functional tests
-      run: yarn ft_test
-    - uses: codecov/codecov-action@v4
-      with:
-        token: ${{ secrets.CODECOV_TOKEN }}
+    - uses: codecov/codecov-action@v2
     - name: run executables tests
       run: yarn install && yarn test
       working-directory: 'lib/executables/pensieveCreds/'
@@ -59,20 +55,20 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout
-      uses: actions/checkout@v4
+      uses: actions/checkout@v2
     - name: Install NodeJS
-      uses: actions/setup-node@v4
+      uses: actions/setup-node@v2
       with:
         node-version: '16'
         cache: yarn
     - name: Install dependencies
-      run: yarn install --frozen-lockfile --prefer-offline
+      run: yarn cache clean && yarn install --frozen-lockfile
       continue-on-error: true # TODO ARSN-97 Remove it when no errors in TS
     - name: Compile
       run: yarn build
       continue-on-error: true # TODO ARSN-97 Remove it when no errors in TS
     - name: Upload artifacts
-      uses: scality/action-artifacts@v4
+      uses: scality/action-artifacts@v2
       with:
         url: https://artifacts.scality.net
         user: ${{ secrets.ARTIFACTS_USER }}

.swcrc

@@ -1,12 +0,0 @@
-{
-  "$schema": "https://swc.rs/schema.json",
-  "jsc": {
-    "parser": {
-      "syntax": "typescript"
-    },
-    "target": "es2017"
-  },
-  "module": {
-    "type": "commonjs"
-  }
-}

documentation/BucketInfoModelVersion.md

@@ -178,83 +178,3 @@ this._serverSideEncryption.configuredMasterKeyId = configuredMasterKeyId || unde
 ### Usage
 
 Used to store the users configured KMS key id
-
-## Model version 15
-
-### Properties Added
-
-```javascript
-this._tags = tags || null;
-```
-
-The Tag Set of a bucket is an array of objects with Key and Value:
-
-```javascript
-[
-    {
-        Key: 'something',
-        Value: 'some_data'
-    }
-]
-```
-
-## Model version 16
-
-### Properties Added
-
-```javascript
-this._capabilities = capabilities || undefined;
-```
-
-For capacity-enabled buckets, contains the following data:
-
-```javascript
-{
-    _capabilities: {
-        VeeamSOSApi?: {
-            SystemInfo?: {
-                ProtocolVersion: String,
-                ModelName: String,
-                ProtocolCapabilities: {
-                    CapacityInfo: Boolean,
-                    UploadSessions: Boolean,
-                    IAMSTS: Boolean,
-                },
-                APIEndpoints: {
-                    IAMEndpoint: String,
-                    STSEndpoint: String,
-                },
-                SystemRecommendations?: {
-                    S3ConcurrentTaskLimit: Number,
-                    S3MultiObjectDelete: Number,
-                    StorageCurrentTasksLimit: Number,
-                    KbBlockSize: Number,
-                }
-                LastModified?: String,
-            },
-            CapacityInfo?: {
-                Capacity: Number,
-                Available: Number,
-                Used: Number,
-                LastModified?: String,
-            },
-        }
-    },
-}
-```
-
-### Usage
-
-Used to store bucket tagging
-
-## Model version 17
-
-### Properties Added
-
-```javascript
-this._quotaMax = quotaMax || 0;
-```
-
-### Usage
-
-Used to store bucket quota

documentation/listingAlgos/delimiter.md

@@ -1,27 +0,0 @@
-# Delimiter
-
-The Delimiter class handles raw listings from the database with an
-optional delimiter, and fills in a curated listing with "Contents" and
-"CommonPrefixes" as a result.
-
-## Expected Behavior
-
-- only lists keys belonging to the given **prefix** (if provided)
-
-- groups listed keys that have a common prefix ending with a delimiter
-  inside CommonPrefixes
-
-- can take a **marker** or **continuationToken** to list from a specific key
-
-- can take a **maxKeys** parameter to limit how many keys can be returned
-
-## State Chart
-
-- States with grey background are *Idle* states, which are waiting for
-  a new listing key
-
-- States with blue background are *Processing* states, which are
-  actively processing a new listing key passed by the filter()
-  function
-
-![Delimiter State Chart](./pics/delimiterStateChart.svg)

documentation/listingAlgos/delimiterMaster.md

@@ -1,45 +0,0 @@
-# DelimiterMaster
-
-The DelimiterMaster class handles raw listings from the database of a
-versioned or non-versioned bucket with an optional delimiter, and
-fills in a curated listing with "Contents" and "CommonPrefixes" as a
-result.
-
-## Expected Behavior
-
-- only lists latest versions of versioned buckets
-
-- only lists keys belonging to the given **prefix** (if provided)
-
-- does not list latest versions that are delete markers
-
-- groups listed keys that have a common prefix ending with a delimiter
-  inside CommonPrefixes
-
-- can take a **marker** or **continuationToken** to list from a specific key
-
-- can take a **maxKeys** parameter to limit how many keys can be returned
-
-- reconciles internal PHD keys with the next version (those are
-  created when a specific version that is the latest version is
-  deleted)
-
-- skips internal keys like replay keys
-
-## State Chart
-
-- States with grey background are *Idle* states, which are waiting for
-  a new listing key
-
-- States with blue background are *Processing* states, which are
-  actively processing a new listing key passed by the filter()
-  function
-
-### Bucket Vformat=v0
-
-![DelimiterMaster State Chart for v0 format](./pics/delimiterMasterV0StateChart.svg)
-
-### Bucket Vformat=v1
-
-For buckets in versioning key format **v1**, the algorithm used is the
-one from [Delimiter](delimiter.md).

documentation/listingAlgos/delimiterVersions.md

@@ -1,33 +0,0 @@
-# DelimiterVersions
-
-The DelimiterVersions class handles raw listings from the database of a
-versioned or non-versioned bucket with an optional delimiter, and
-fills in a curated listing with "Versions" and "CommonPrefixes" as a
-result.
-
-## Expected Behavior
-
-- lists individual distinct versions of versioned buckets
-
-- only lists keys belonging to the given **prefix** (if provided)
-
-- groups listed keys that have a common prefix ending with a delimiter
-  inside CommonPrefixes
-
-- can take a **keyMarker** and optionally a **versionIdMarker** to
-  list from a specific key or version
-
-- can take a **maxKeys** parameter to limit how many keys can be returned
-
-- skips internal keys like replay keys
-
-## State Chart
-
-- States with grey background are *Idle* states, which are waiting for
-  a new listing key
-
-- States with blue background are *Processing* states, which are
-  actively processing a new listing key passed by the filter()
-  function
-
-![DelimiterVersions State Chart](./pics/delimiterVersionsStateChart.svg)

documentation/listingAlgos/pics/delimiterMasterV0StateChart.dot

@@ -1,45 +0,0 @@
-digraph {
-  node [shape="box",style="filled,rounded",fontsize=16,fixedsize=true,width=3];
-  edge [fontsize=14];
-  rankdir=TB;
-
-  START [shape="circle",width=0.2,label="",style="filled",fillcolor="black"]
-  END [shape="circle",width=0.2,label="",style="filled",fillcolor="black",peripheries=2]
-
-  node [fillcolor="lightgrey"];
-  "NotSkippingPrefixNorVersions.Idle" [label="NotSkippingPrefixNorVersions",group="NotSkippingPrefixNorVersions",width=4];
-  "SkippingPrefix.Idle" [label="SkippingPrefix",group="SkippingPrefix"];
-  "SkippingVersions.Idle" [label="SkippingVersions",group="SkippingVersions"];
-  "WaitVersionAfterPHD.Idle" [label="WaitVersionAfterPHD",group="WaitVersionAfterPHD"];
-
-  node [fillcolor="lightblue"];
-  "NotSkippingPrefixNorVersions.Processing" [label="NotSkippingPrefixNorVersions",group="NotSkippingPrefixNorVersions",width=4];
-  "SkippingPrefix.Processing" [label="SkippingPrefix",group="SkippingPrefix"];
-  "SkippingVersions.Processing" [label="SkippingVersions",group="SkippingVersions"];
-  "WaitVersionAfterPHD.Processing" [label="WaitVersionAfterPHD",group="WaitVersionAfterPHD"];
-
-  START -> "SkippingVersions.Idle" [label="[marker != undefined]"]
-  START -> "NotSkippingPrefixNorVersions.Idle" [label="[marker == undefined]"]
-
-  "NotSkippingPrefixNorVersions.Idle" -> "NotSkippingPrefixNorVersions.Processing" [label="filter(key, value)"]
-  "SkippingPrefix.Idle" -> "SkippingPrefix.Processing" [label="filter(key, value)"]
-  "SkippingVersions.Idle" -> "SkippingVersions.Processing" [label="filter(key, value)"]
-  "WaitVersionAfterPHD.Idle" -> "WaitVersionAfterPHD.Processing" [label="filter(key, value)"]
-
-
-  "NotSkippingPrefixNorVersions.Processing" -> "SkippingVersions.Idle" [label="[Version.isDeleteMarker(value)]\n-> FILTER_ACCEPT"]
-  "NotSkippingPrefixNorVersions.Processing" -> "WaitVersionAfterPHD.Idle" [label="[Version.isPHD(value)]\n-> FILTER_ACCEPT"]
-  "NotSkippingPrefixNorVersions.Processing" -> "SkippingPrefix.Idle" [label="[key.startsWith(<ReplayPrefix>)]\n/ prefix <- <ReplayPrefix>\n-> FILTER_SKIP"]
-  "NotSkippingPrefixNorVersions.Processing" -> END [label="[isListableKey(key, value) and\nKeys == maxKeys]\n-> FILTER_END"]
-  "NotSkippingPrefixNorVersions.Processing" -> "SkippingPrefix.Idle" [label="[isListableKey(key, value) and\nnKeys < maxKeys and\nhasDelimiter(key)]\n/ prefix <- prefixOf(key)\n/ CommonPrefixes.append(prefixOf(key))\n-> FILTER_ACCEPT"]
-  "NotSkippingPrefixNorVersions.Processing" -> "SkippingVersions.Idle" [label="[isListableKey(key, value) and\nnKeys < maxKeys and\nnot hasDelimiter(key)]\n/ Contents.append(key, value)\n-> FILTER_ACCEPT"]
-
-  "SkippingPrefix.Processing" -> "SkippingPrefix.Idle" [label="[key.startsWith(prefix)]\n-> FILTER_SKIP"]
-  "SkippingPrefix.Processing" -> "NotSkippingPrefixNorVersions.Processing" [label="[not key.startsWith(prefix)]"]
-
-  "SkippingVersions.Processing" -> "SkippingVersions.Idle" [label="[isVersionKey(key)]\n-> FILTER_SKIP"]
-  "SkippingVersions.Processing" -> "NotSkippingPrefixNorVersions.Processing" [label="[not isVersionKey(key)]"]
-
-  "WaitVersionAfterPHD.Processing" -> "NotSkippingPrefixNorVersions.Processing" [label="[isVersionKey(key) and master(key) == PHDkey]\n/ key <- master(key)"]
-  "WaitVersionAfterPHD.Processing" -> "NotSkippingPrefixNorVersions.Processing" [label="[not isVersionKey(key) or master(key) != PHDkey]"]
-}

documentation/listingAlgos/pics/delimiterMasterV0StateChart.svg

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errors/arsenalErrors.json

@@ -0,0 +1,773 @@
+{
+  "_comment": "------------------- Amazon errors ------------------",
+  "AccessDenied": {
+    "code": 403,
+    "description": "Access Denied"
+  },
+  "AccessForbidden": {
+    "code": 403,
+    "description": "Access Forbidden"
+  },
+  "AccountProblem": {
+    "code": 403,
+    "description": "There is a problem with your AWS account that prevents the operation from completing successfully. Please use Contact Us."
+  },
+  "AmbiguousGrantByEmailAddress": {
+    "code": 400,
+    "description": "The email address you provided is associated with more than one account."
+  },
+  "BadDigest": {
+    "code": 400,
+    "description": "The Content-MD5 you specified did not match what we received."
+  },
+  "BucketAlreadyExists": {
+    "code": 409,
+    "description": "The requested bucket name is not available. The bucket namespace is shared by all users of the system. Please select a different name and try again."
+  },
+  "BucketAlreadyOwnedByYou": {
+    "code": 409,
+    "description": "Your previous request to create the named bucket succeeded and you already own it. You get this error in all AWS regions except US Standard, us-east-1. In us-east-1 region, you will get 200 OK, but it is no-op (if bucket exists S3 will not do anything)."
+  },
+  "BucketNotEmpty": {
+    "code": 409,
+    "description": "The bucket you tried to delete is not empty."
+  },
+  "CredentialsNotSupported": {
+    "code": 400,
+    "description": "This request does not support credentials."
+  },
+  "CrossLocationLoggingProhibited": {
+    "code": 403,
+    "description": "Cross-location logging not allowed. Buckets in one geographic location cannot log information to a bucket in another location."
+  },
+  "DeleteConflict": {
+    "code": 409,
+    "description": "The request was rejected because it attempted to delete a resource that has attached subordinate entities. The error message describes these entities."
+  },
+  "EntityTooSmall": {
+    "code": 400,
+    "description": "Your proposed upload is smaller than the minimum allowed object size."
+  },
+  "EntityTooLarge": {
+    "code": 400,
+    "description": "Your proposed upload exceeds the maximum allowed object size."
+  },
+  "ExpiredToken": {
+    "code": 400,
+    "description": "The provided token has expired."
+  },
+  "HttpHeadersTooLarge": {
+    "code": 400,
+    "description": "Your http headers exceed the maximum allowed http headers size."
+  },
+  "IllegalVersioningConfigurationException": {
+    "code": 400,
+    "description": "Indicates that the versioning configuration specified in the request is invalid."
+  },
+  "IncompleteBody": {
+    "code": 400,
+    "description": "You did not provide the number of bytes specified by the Content-Length HTTP header."
+  },
+  "IncorrectNumberOfFilesInPostRequest": {
+    "code": 400,
+    "description": "POST requires exactly one file upload per request."
+  },
+  "InlineDataTooLarge": {
+    "code": 400,
+    "description": "Inline data exceeds the maximum allowed size."
+  },
+  "InternalError": {
+    "code": 500,
+    "description": "We encountered an internal error. Please try again."
+  },
+  "InvalidAccessKeyId": {
+    "code": 403,
+    "description": "The AWS access key Id you provided does not exist in our records."
+  },
+  "InvalidAddressingHeader": {
+    "code": 400,
+    "description": "You must specify the Anonymous role."
+  },
+  "InvalidArgument": {
+    "code": 400,
+    "description": "Invalid Argument"
+  },
+  "InvalidBucketName": {
+    "code": 400,
+    "description": "The specified bucket is not valid."
+  },
+  "InvalidBucketState": {
+    "code": 409,
+    "description": "The request is not valid with the current state of the bucket."
+  },
+  "InvalidDigest": {
+    "code": 400,
+    "description": "The Content-MD5 you specified is not valid."
+  },
+  "InvalidEncryptionAlgorithmError": {
+    "code": 400,
+    "description": "The encryption request you specified is not valid. The valid value is AES256."
+  },
+  "InvalidLocationConstraint": {
+    "code": 400,
+    "description": "The specified location constraint is not valid."
+  },
+  "InvalidObjectState": {
+    "code": 403,
+    "description": "The operation is not valid for the current state of the object."
+  },
+  "InvalidPart": {
+    "code": 400,
+    "description": "One or more of the specified parts could not be found. The part might not have been uploaded, or the specified entity tag might not have matched the part's entity tag."
+  },
+  "InvalidPartOrder": {
+    "code": 400,
+    "description": "The list of parts was not in ascending order.Parts list must specified in order by part number."
+  },
+  "InvalidPartNumber": {
+    "code": 416,
+    "description": "The requested partnumber is not satisfiable."
+  },
+  "InvalidPayer": {
+    "code": 403,
+    "description": "All access to this object has been disabled."
+  },
+  "InvalidPolicyDocument": {
+    "code": 400,
+    "description": "The content of the form does not meet the conditions specified in the policy document."
+  },
+  "InvalidRange": {
+    "code": 416,
+    "description": "The requested range cannot be satisfied."
+  },
+  "InvalidRedirectLocation": {
+    "code": 400,
+    "description": "The website redirect location must have a prefix of 'http://' or 'https://' or '/'."
+  },
+  "InvalidRequest": {
+    "code": 400,
+    "description": "SOAP requests must be made over an HTTPS connection."
+  },
+  "InvalidSecurity": {
+    "code": 403,
+    "description": "The provided security credentials are not valid."
+  },
+  "InvalidSOAPRequest": {
+    "code": 400,
+    "description": "The SOAP request body is invalid."
+  },
+  "InvalidStorageClass": {
+    "code": 400,
+    "description": "The storage class you specified is not valid."
+  },
+  "InvalidTag": {
+    "code": 400,
+    "description": "The Tag you have provided is invalid"
+  },
+  "InvalidTargetBucketForLogging": {
+    "code": 400,
+    "description": "The target bucket for logging does not exist, is not owned by you, or does not have the appropriate grants for the log-delivery group."
+  },
+  "InvalidToken": {
+    "code": 400,
+    "description": "The provided token is malformed or otherwise invalid."
+  },
+  "InvalidURI": {
+    "code": 400,
+    "description": "Couldn't parse the specified URI."
+  },
+  "KeyTooLong": {
+    "code": 400,
+    "description": "Your key is too long."
+  },
+  "LimitExceeded": {
+    "code": 409,
+    "description": "    The request was rejected because it attempted to create resources beyond the current AWS account limits. The error message describes the limit exceeded."
+  },
+  "MalformedACLError": {
+    "code": 400,
+    "description": "The XML you provided was not well-formed or did not validate against our published schema."
+  },
+  "MalformedPOSTRequest": {
+    "code": 400,
+    "description": "The body of your POST request is not well-formed multipart/form-data."
+  },
+  "MalformedXML": {
+    "code": 400,
+    "description": "The XML you provided was not well-formed or did not validate against our published schema."
+  },
+  "MaxMessageLengthExceeded": {
+    "code": 400,
+    "description": "Your request was too big."
+  },
+  "MaxPostPreDataLengthExceededError": {
+    "code": 400,
+    "description": "Your POST request fields preceding the upload file were too large."
+  },
+  "MetadataTooLarge": {
+    "code": 400,
+    "description": "Your metadata headers exceed the maximum allowed metadata size."
+  },
+  "MethodNotAllowed": {
+    "code": 405,
+    "description": "The specified method is not allowed against this resource."
+  },
+  "MissingAttachment": {
+    "code": 400,
+    "description": "A SOAP attachment was expected, but none were found."
+  },
+  "MissingContentLength": {
+    "code": 411,
+    "description": "You must provide the Content-Length HTTP header."
+  },
+  "MissingRequestBodyError": {
+    "code": 400,
+    "description": "Request body is empty"
+  },
+  "MissingRequiredParameter": {
+    "code": 400,
+    "description": "Your request is missing a required parameter."
+  },
+  "MissingSecurityElement": {
+    "code": 400,
+    "description": "The SOAP 1.1 request is missing a security element."
+  },
+  "MissingSecurityHeader": {
+    "code": 400,
+    "description": "Your request is missing a required header."
+  },
+  "NoLoggingStatusForKey": {
+    "code": 400,
+    "description": "There is no such thing as a logging status subresource for a key."
+  },
+  "NoSuchBucket": {
+    "code": 404,
+    "description": "The specified bucket does not exist."
+  },
+  "NoSuchCORSConfiguration": {
+    "code": 404,
+    "description": "The CORS configuration does not exist"
+  },
+  "NoSuchKey": {
+    "code": 404,
+    "description": "The specified key does not exist."
+  },
+  "NoSuchLifecycleConfiguration": {
+    "code": 404,
+    "description": "The lifecycle configuration does not exist."
+  },
+  "NoSuchObjectLockConfiguration": {
+    "code": 404,
+    "description": "The specified object does not have a ObjectLock configuration."
+  },
+  "NoSuchWebsiteConfiguration": {
+    "code": 404,
+    "description": "The specified bucket does not have a website configuration"
+  },
+  "NoSuchUpload": {
+    "code": 404,
+    "description": "The specified multipart upload does not exist. The upload ID might be invalid, or the multipart upload might have been aborted or completed."
+  },
+  "NoSuchVersion": {
+    "code": 404,
+    "description": "Indicates that the version ID specified in the request does not match an existing version."
+  },
+  "ReplicationConfigurationNotFoundError": {
+    "code": 404,
+    "description": "The replication configuration was not found"
+  },
+  "ObjectLockConfigurationNotFoundError": {
+    "code": 404,
+    "description": "The object lock configuration was not found"
+  },
+  "ServerSideEncryptionConfigurationNotFoundError" : {
+    "code": 404,
+    "description": "The server side encryption configuration was not found"
+  },
+  "NotImplemented": {
+    "code": 501,
+    "description": "A header you provided implies functionality that is not implemented."
+  },
+  "NotModified": {
+    "code": 304,
+    "description": "Not Modified."
+  },
+  "NotSignedUp": {
+    "code": 403,
+    "description": "Your account is not signed up for the S3 service. You must sign up before you can use S3. "
+  },
+  "NoSuchBucketPolicy": {
+    "code": 404,
+    "description": "The specified bucket does not have a bucket policy."
+  },
+  "OperationAborted": {
+    "code": 409,
+    "description": "A conflicting conditional operation is currently in progress against this resource. Try again."
+  },
+  "PermanentRedirect": {
+    "code": 301,
+    "description": "The bucket you are attempting to access must be addressed using the specified endpoint. Send all future requests to this endpoint."
+  },
+  "PreconditionFailed": {
+    "code": 412,
+    "description": "At least one of the preconditions you specified did not hold."
+  },
+  "Redirect": {
+    "code": 307,
+    "description": "Temporary redirect."
+  },
+  "RestoreAlreadyInProgress": {
+    "code": 409,
+    "description": "Object restore is already in progress."
+  },
+  "RequestIsNotMultiPartContent": {
+    "code": 400,
+    "description": "Bucket POST must be of the enclosure-type multipart/form-data."
+  },
+  "RequestTimeout": {
+    "code": 400,
+    "description": "Your socket connection to the server was not read from or written to within the timeout period."
+  },
+  "RequestTimeTooSkewed": {
+    "code": 403,
+    "description": "The difference between the request time and the server's time is too large."
+  },
+  "RequestTorrentOfBucketError": {
+    "code": 400,
+    "description": "Requesting the torrent file of a bucket is not permitted."
+  },
+  "SignatureDoesNotMatch": {
+    "code": 403,
+    "description": "The request signature we calculated does not match the signature you provided."
+  },
+  "_comment" : {
+    "note" : "This is an AWS S3 specific error. We are opting to use the more general 'ServiceUnavailable' error used throughout AWS (IAM/EC2) to have uniformity of error messages even though we are potentially compromising S3 compatibility.",
+    "ServiceUnavailable": {
+      "code": 503,
+      "description": "Reduce your request rate."
+    }
+  },
+  "ServiceUnavailable": {
+    "code": 503,
+    "description": "The request has failed due to a temporary failure of the server."
+  },
+  "SlowDown": {
+    "code": 503,
+    "description": "Reduce your request rate."
+  },
+  "TemporaryRedirect": {
+    "code": 307,
+    "description": "You are being redirected to the bucket while DNS updates."
+  },
+  "TokenRefreshRequired": {
+    "code": 400,
+    "description": "The provided token must be refreshed."
+  },
+  "TooManyBuckets": {
+    "code": 400,
+    "description": "You have attempted to create more buckets than allowed."
+  },
+  "TooManyParts": {
+    "code": 400,
+    "description": "You have attempted to upload more parts than allowed."
+  },
+  "UnexpectedContent": {
+    "code": 400,
+    "description": "This request does not support content."
+  },
+  "UnresolvableGrantByEmailAddress": {
+    "code": 400,
+    "description": "The email address you provided does not match any account on record."
+  },
+  "UserKeyMustBeSpecified": {
+    "code": 400,
+    "description": "The bucket POST must contain the specified field name. If it is specified, check the order of the fields."
+  },
+  "NoSuchEntity": {
+    "code": 404,
+    "description": "The request was rejected because it referenced an entity that does not exist. The error message describes the entity."
+  },
+  "WrongFormat": {
+    "code": 400,
+    "description": "Data entered by the user has a wrong format."
+  },
+  "Forbidden": {
+    "code": 403,
+    "description": "Authentication failed."
+  },
+  "EntityDoesNotExist": {
+    "code": 404,
+    "description": "Not found."
+  },
+  "EntityAlreadyExists": {
+    "code": 409,
+    "description": "The request was rejected because it attempted to create a resource that already exists."
+  },
+  "KeyAlreadyExists": {
+    "code": 409,
+    "description": "The request was rejected because it attempted to create a resource that already exists."
+  },
+  "ServiceFailure": {
+    "code": 500,
+    "description": "Server error: the request processing has failed because of an unknown error, exception or failure."
+  },
+  "IncompleteSignature": {
+    "code": 400,
+    "description": "The request signature does not conform to AWS standards."
+  },
+  "InternalFailure": {
+    "code": 500,
+    "description": "The request processing has failed because of an unknown error, exception or failure."
+  },
+  "InvalidAction": {
+    "code": 400,
+    "description": "The action or operation requested is invalid. Verify that the action is typed correctly."
+  },
+  "InvalidClientTokenId": {
+    "code": 403,
+    "description": "The X.509 certificate or AWS access key ID provided does not exist in our records."
+  },
+  "InvalidParameterCombination": {
+    "code": 400,
+    "description": "Parameters that must not be used together were used together."
+  },
+  "InvalidParameterValue": {
+    "code": 400,
+    "description": "An invalid or out-of-range value was supplied for the input parameter."
+  },
+  "InvalidQueryParameter": {
+    "code": 400,
+    "description": "The AWS query string is malformed or does not adhere to AWS standards."
+  },
+  "MalformedQueryString": {
+    "code": 404,
+    "description": "The query string contains a syntax error."
+  },
+  "MissingAction": {
+    "code": 400,
+    "description": "The request is missing an action or a required parameter."
+  },
+  "MissingAuthenticationToken": {
+    "code": 403,
+    "description": "The request must contain either a valid (registered) AWS access key ID or X.509 certificate."
+  },
+  "MissingParameter": {
+    "code": 400,
+    "description": "A required parameter for the specified action is not supplied."
+  },
+  "OptInRequired": {
+    "code": 403,
+    "description": "The AWS access key ID needs a subscription for the service."
+  },
+  "RequestExpired": {
+    "code": 400,
+    "description": "The request reached the service more than 15 minutes after the date stamp on the request or more than 15 minutes after the request expiration date (such as for pre-signed URLs), or the date stamp on the request is more than 15 minutes in the future."
+  },
+  "Throttling": {
+    "code": 400,
+    "description": "The request was denied due to request throttling."
+  },
+  "AccountNotFound": {
+    "code": 404,
+    "description": "No account was found in Vault, please contact your system administrator."
+  },
+  "ValidationError": {
+    "code": 400,
+    "description": "The specified value is invalid."
+  },
+  "MalformedPolicyDocument": {
+     "code": 400,
+     "description": "Syntax errors in policy."
+  },
+  "InvalidInput": {
+     "code": 400,
+     "description": "The request was rejected because an invalid or out-of-range value was supplied for an input parameter."
+  },
+  "MalformedPolicy": {
+    "code": 400,
+    "description": "This policy contains invalid Json"
+  },
+  "ReportExpired": {
+    "code": 410,
+    "description": "The request was rejected because the most recent credential report has expired. To generate a new credential report, use GenerateCredentialReport."
+  },
+  "ReportInProgress": {
+    "code": 404,
+    "description": "The request was rejected because the credential report is still being generated."
+  },
+  "ReportNotPresent": {
+    "code": 410,
+    "description": "The request was rejected because the credential report does not exist. To generate a credential report, use GenerateCredentialReport."
+  },
+  "_comment": "-------------- Special non-AWS S3 errors --------------",
+  "MPUinProgress": {
+    "code": 409,
+    "description": "The bucket you tried to delete has an ongoing multipart upload."
+  },
+  "LocationNotFound": {
+    "code": 424,
+    "description": "The object data location does not exist."
+  },
+  "_comment": "-------------- Internal project errors --------------",
+  "_comment": "----------------------- Vault -----------------------",
+  "_comment": "#### formatErrors ####",
+  "BadName": {
+    "description": "name not ok",
+    "code": 5001
+  },
+  "BadAccount": {
+    "description": "account not ok",
+    "code": 5002
+  },
+  "BadGroup": {
+    "description": "group not ok",
+    "code": 5003
+  },
+  "BadId": {
+    "description": "id not ok",
+    "code": 5004
+  },
+  "BadAccountName": {
+    "description": "accountName not ok",
+    "code": 5005
+  },
+  "BadNameFriendly": {
+    "description": "nameFriendly not ok",
+    "code": 5006
+  },
+  "BadEmailAddress": {
+    "description": "email address not ok",
+    "code": 5007
+  },
+  "BadPath": {
+    "description": "path not ok",
+    "code": 5008
+  },
+  "BadArn": {
+    "description": "arn not ok",
+    "code": 5009
+  },
+  "BadCreateDate": {
+    "description": "createDate not ok",
+    "code": 5010
+  },
+  "BadLastUsedDate": {
+    "description": "lastUsedDate not ok",
+    "code": 5011
+  },
+  "BadNotBefore": {
+    "description": "notBefore not ok",
+    "code": 5012
+  },
+  "BadNotAfter": {
+    "description": "notAfter not ok",
+    "code": 5013
+  },
+  "BadSaltedPwd": {
+    "description": "salted password not ok",
+    "code": 5014
+  },
+  "ok": {
+    "description": "No error",
+    "code": 200
+  },
+  "BadUser": {
+    "description": "user not ok",
+    "code": 5016
+  },
+  "BadSaltedPasswd": {
+    "description": "salted password not ok",
+    "code": 5017
+  },
+  "BadPasswdDate": {
+    "description": "password date not ok",
+    "code": 5018
+  },
+  "BadCanonicalId": {
+    "description": "canonicalId not ok",
+    "code": 5019
+  },
+  "BadAlias": {
+    "description": "alias not ok",
+    "code": 5020
+  },
+  "_comment": "#### internalErrors ####",
+  "DBPutFailed": {
+    "description": "DB put failed",
+    "code": 5021
+  },
+  "_comment": "#### alreadyExistErrors ####",
+  "AccountEmailAlreadyUsed": {
+    "description": "an other account already uses that email",
+    "code": 5022
+  },
+  "AccountNameAlreadyUsed": {
+    "description": "an other account already uses that name",
+    "code": 5023
+  },
+  "UserEmailAlreadyUsed": {
+    "description": "an other user already uses that email",
+    "code": 5024
+  },
+  "UserNameAlreadyUsed": {
+    "description": "an other user already uses that name",
+    "code": 5025
+  },
+  "_comment": "#### doesntExistErrors ####",
+  "NoParentAccount": {
+    "description": "parent account does not exist",
+    "code": 5026
+  },
+  "_comment": "#### authErrors ####",
+  "BadStringToSign": {
+    "description": "stringToSign not ok'",
+    "code": 5027
+  },
+  "BadSignatureFromRequest": {
+    "description": "signatureFromRequest not ok",
+    "code": 5028
+  },
+  "BadAlgorithm": {
+    "description": "hashAlgorithm not ok",
+    "code": 5029
+  },
+  "SecretKeyDoesNotExist": {
+    "description": "secret key does not exist",
+    "code": 5030
+  },
+  "InvalidRegion": {
+    "description": "Region was not provided or is not recognized by the system",
+    "code": 5031
+  },
+  "ScopeDate": {
+    "description": "scope date is missing, or format is invalid",
+    "code": 5032
+  },
+  "BadAccessKey": {
+    "description": "access key not ok",
+    "code": 5033
+  },
+  "NoDict": {
+    "description": "no dictionary of params provided for signature verification",
+    "code": 5034
+  },
+  "BadSecretKey": {
+    "description": "secretKey not ok",
+    "code": 5035
+  },
+  "BadSecretKeyValue": {
+    "description": "secretKey value not ok",
+    "code": 5036
+  },
+  "BadSecretKeyStatus": {
+    "description": "secretKey status not ok",
+    "code": 5037
+  },
+  "_comment": "#### OidcpErrors ####",
+  "BadUrl": {
+    "description": "url not ok",
+    "code": 5038
+  },
+  "BadClientIdList": {
+    "description": "client id list not ok'",
+    "code": 5039
+  },
+  "BadThumbprintList": {
+    "description": "thumbprint list not ok'",
+    "code": 5040
+  },
+  "BadObject": {
+    "description": "Object not ok'",
+    "code": 5041
+  },
+  "_comment": "#### RoleErrors ####",
+  "BadRole": {
+    "description": "role not ok",
+    "code": 5042
+  },
+  "_comment": "#### SamlpErrors ####",
+  "BadSamlp": {
+    "description": "samlp not ok",
+    "code": 5043
+  },
+  "BadMetadataDocument": {
+    "description": "metadata document not ok",
+    "code": 5044
+  },
+  "BadSessionIndex": {
+    "description": "session index not ok",
+    "code": 5045
+  },
+  "Unauthorized": {
+    "description": "not authenticated",
+    "code": 401
+  },
+  "_comment": "---------------------  MetaData ---------------------",
+  "_comment": "#### formatErrors ####",
+  "CacheUpdated": {
+    "description": "The cache has been updated",
+    "code": 500
+  },
+  "DBNotFound": {
+    "description": "This DB does not exist",
+    "code": 404
+  },
+  "DBAlreadyExists": {
+    "description": "This DB already exist",
+    "code": 409
+  },
+  "ObjNotFound": {
+    "description": "This object does not exist",
+    "code": 404
+  },
+  "PermissionDenied": {
+    "description": "Permission denied",
+    "code": 403
+  },
+  "BadRequest": {
+    "description": "BadRequest",
+    "code": 400
+  },
+  "RaftSessionNotLeader": {
+    "description": "NotLeader",
+    "code": 500
+  },
+  "RaftSessionLeaderNotConnected": {
+    "description": "RaftSessionLeaderNotConnected",
+    "code": 400
+  },
+  "NoLeaderForDB": {
+    "description": "NoLeaderForDB",
+    "code": 400
+  },
+  "RouteNotFound": {
+    "description": "RouteNotFound",
+    "code": 404
+  },
+  "NoMapsInConfig": {
+    "description": "NoMapsInConfig",
+    "code": 404
+  },
+  "DBAPINotReady": {
+    "message": "DBAPINotReady",
+    "code": 500
+  },
+  "NotEnoughMapsInConfig:": {
+    "description": "NotEnoughMapsInConfig",
+    "code": 400
+  },
+  "TooManyRequests": {
+    "description": "TooManyRequests",
+    "code": 429
+  },
+  "_comment": "----------------------- cdmiclient -----------------------",
+  "ReadOnly": {
+    "description": "trying to write to read only back-end",
+    "code": 403
+  },
+  "_comment": "----------------------- authbackend -----------------------",
+  "AuthMethodNotImplemented": {
+    "description": "AuthMethodNotImplemented",
+    "code": 501
+  }
+}

index.ts

@@ -1,138 +1,50 @@
-import * as evaluators from './lib/policyEvaluator/evaluator';
-import evaluatePrincipal from './lib/policyEvaluator/principal';
-import RequestContext, {
-    actionNeedQuotaCheck,
-    actionNeedQuotaCheckCopy,
-    actionWithDataDeletion } from './lib/policyEvaluator/RequestContext';
-import * as requestUtils from './lib/policyEvaluator/requestUtils';
-import * as actionMaps from './lib/policyEvaluator/utils/actionMaps';
-import { validateUserPolicy } from './lib/policy/policyValidator'
-import * as locationConstraints from './lib/patches/locationConstraints';
-import * as userMetadata from './lib/s3middleware/userMetadata';
-import convertToXml from './lib/s3middleware/convertToXml';
-import escapeForXml from './lib/s3middleware/escapeForXml';
-import * as objectLegalHold from './lib/s3middleware/objectLegalHold';
-import * as tagging from './lib/s3middleware/tagging';
-import { checkDateModifiedHeaders } from './lib/s3middleware/validateConditionalHeaders';
-import { validateConditionalHeaders } from './lib/s3middleware/validateConditionalHeaders';
-import MD5Sum from './lib/s3middleware/MD5Sum';
-import NullStream from './lib/s3middleware/nullStream';
-import * as objectUtils from './lib/s3middleware/objectUtils';
-import * as mpuUtils from './lib/s3middleware/azureHelpers/mpuUtils';
-import ResultsCollector from './lib/s3middleware/azureHelpers/ResultsCollector';
-import SubStreamInterface from './lib/s3middleware/azureHelpers/SubStreamInterface';
-import { prepareStream } from './lib/s3middleware/prepareStream';
-import * as processMpuParts from './lib/s3middleware/processMpuParts';
-import * as retention from './lib/s3middleware/objectRetention';
-import * as objectRestore from './lib/s3middleware/objectRestore';
-import * as lifecycleHelpers from './lib/s3middleware/lifecycleHelpers';
-export { default as errors } from './lib/errors';
-export { default as Clustering } from './lib/Clustering';
-export * as ClusterRPC from './lib/clustering/ClusterRPC';
-export * as ipCheck from './lib/ipCheck';
+// Exports
 export * as auth from './lib/auth/auth';
 export * as constants from './lib/constants';
-export * as https from './lib/https';
-export * as metrics from './lib/metrics';
-export * as network from './lib/network';
-export * as s3routes from './lib/s3routes';
-export * as versioning from './lib/versioning';
-export * as stream from './lib/stream';
-export * as jsutil from './lib/jsutil';
-export { default as stringHash } from './lib/stringHash';
 export * as db from './lib/db';
+export { default as errors } from './lib/errors';
 export * as errorUtils from './lib/errorUtils';
 export { default as shuffle } from './lib/shuffle';
+export { default as stringHash } from './lib/stringHash';
+export * as ipCheck from './lib/ipCheck';
+export * as jsutil from './lib/jsutil';
+export * as https from './lib/https';
+export { default as Clustering } from './lib/Clustering';
+export * as algorithms from './lib/algos';
+export * as policies from './lib/policyEvaluator';
+export * as testing from './lib/testing';
+export * as versioning from './lib/versioning';
+export * as network from './lib/network';
+export * as s3routes from './lib/s3routes';
+export * as s3middleware from './lib/s3middleware';
 export * as models from './lib/models';
+export * as metrics from './lib/metrics';
+export * as stream from './lib/stream';
 
-export const algorithms = {
-    list: require('./lib/algos/list/exportAlgos'),
-    listTools: {
-        DelimiterTools: require('./lib/algos/list/tools'),
-        Skip: require('./lib/algos/list/skip'),
-    },
-    cache: {
-        GapSet: require('./lib/algos/cache/GapSet'),
-        GapCache: require('./lib/algos/cache/GapCache'),
-        LRUCache: require('./lib/algos/cache/LRUCache'),
-    },
-    stream: {
-        MergeStream: require('./lib/algos/stream/MergeStream'),
-    },
-    SortedSet: require('./lib/algos/set/SortedSet'),
-    Heap: require('./lib/algos/heap/Heap'),
-};
-
-export const policies = {
-    evaluators,
-    validateUserPolicy,
-    evaluatePrincipal,
-    RequestContext,
-    requestUtils,
-    actionMaps,
-    actionNeedQuotaCheck,
-    actionWithDataDeletion,
-    actionNeedQuotaCheckCopy,
-};
-
-export const testing = {
-    matrix: require('./lib/testing/matrix.js'),
-};
-
-export const s3middleware = {
-    userMetadata,
-    convertToXml,
-    escapeForXml,
-    objectLegalHold,
-    tagging,
-    checkDateModifiedHeaders,
-    validateConditionalHeaders,
-    MD5Sum,
-    NullStream,
-    objectUtils,
-    azureHelper: {
-        mpuUtils,
-        ResultsCollector,
-        SubStreamInterface,
-    },
-    prepareStream,
-    processMpuParts,
-    retention,
-    objectRestore,
-    lifecycleHelpers,
+export const pensieve = {
+    credentialUtils: require('./lib/executables/pensieveCreds/utils'),
 };
 
 export const storage = {
     metadata: {
         MetadataWrapper: require('./lib/storage/metadata/MetadataWrapper'),
         bucketclient: {
-            BucketClientInterface:
-            require('./lib/storage/metadata/bucketclient/' +
-                'BucketClientInterface'),
-            LogConsumer:
-            require('./lib/storage/metadata/bucketclient/LogConsumer'),
+            BucketClientInterface: require('./lib/storage/metadata/bucketclient/BucketClientInterface'),
+            LogConsumer: require('./lib/storage/metadata/bucketclient/LogConsumer'),
         },
         file: {
-            BucketFileInterface:
-            require('./lib/storage/metadata/file/BucketFileInterface'),
-            MetadataFileServer:
-            require('./lib/storage/metadata/file/MetadataFileServer'),
-            MetadataFileClient:
-            require('./lib/storage/metadata/file/MetadataFileClient'),
+            BucketFileInterface: require('./lib/storage/metadata/file/BucketFileInterface'),
+            MetadataFileServer: require('./lib/storage/metadata/file/MetadataFileServer'),
+            MetadataFileClient: require('./lib/storage/metadata/file/MetadataFileClient'),
         },
         inMemory: {
-            metastore:
-            require('./lib/storage/metadata/in_memory/metastore'),
+            metastore: require('./lib/storage/metadata/in_memory/metastore'),
             metadata: require('./lib/storage/metadata/in_memory/metadata'),
-            bucketUtilities:
-            require('./lib/storage/metadata/in_memory/bucket_utilities'),
+            bucketUtilities: require('./lib/storage/metadata/in_memory/bucket_utilities'),
         },
         mongoclient: {
-            MongoClientInterface:
-            require('./lib/storage/metadata/mongoclient/' +
-                'MongoClientInterface'),
-            LogConsumer:
-            require('./lib/storage/metadata/mongoclient/LogConsumer'),
+            MongoClientInterface: require('./lib/storage/metadata/mongoclient/MongoClientInterface'),
+            LogConsumer: require('./lib/storage/metadata/mongoclient/LogConsumer'),
         },
         proxy: {
             Server: require('./lib/storage/metadata/proxy/Server'),
@@ -140,14 +52,11 @@ export const storage = {
     },
     data: {
         DataWrapper: require('./lib/storage/data/DataWrapper'),
-        MultipleBackendGateway:
-        require('./lib/storage/data/MultipleBackendGateway'),
+        MultipleBackendGateway: require('./lib/storage/data/MultipleBackendGateway'),
         parseLC: require('./lib/storage/data/LocationConstraintParser'),
         file: {
-            DataFileStore:
-            require('./lib/storage/data/file/DataFileStore'),
-            DataFileInterface:
-            require('./lib/storage/data/file/DataFileInterface'),
+            DataFileStore: require('./lib/storage/data/file/DataFileStore'),
+            DataFileInterface: require('./lib/storage/data/file/DataFileInterface'),
         },
         external: {
             AwsClient: require('./lib/storage/data/external/AwsClient'),
@@ -165,11 +74,3 @@ export const storage = {
     },
     utils: require('./lib/storage/utils'),
 };
-
-export const pensieve = {
-    credentialUtils: require('./lib/executables/pensieveCreds/utils'),
-};
-
-export const patches = {
-    locationConstraints,
-};

lib/Clustering.ts

@@ -1,28 +1,16 @@
-import cluster, { Worker } from 'cluster';
-import * as werelogs from 'werelogs';
+import * as cluster from 'cluster';
 
 export default class Clustering {
-    _size: number;
-    _shutdownTimeout: number;
-    _logger: werelogs.Logger;
-    _shutdown: boolean;
-    _workers: (Worker | undefined)[];
-    _workersTimeout: (NodeJS.Timeout | undefined)[];
-    _workersStatus: (number | string | undefined)[];
-    _status: number;
-    _exitCb?: (clustering: Clustering, exitSignal?: string) => void;
-    _index?: number;
-
     /**
      * Constructor
      *
-     * @param size Cluster size
-     * @param logger Logger object
-     * @param [shutdownTimeout=5000] Change default shutdown timeout
+     * @param {number} size Cluster size
+     * @param {Logger} logger Logger object
+     * @param {number} [shutdownTimeout=5000] Change default shutdown timeout
      * releasing ressources
-     * @return itself
+     * @return {Clustering} itself
      */
-    constructor(size: number, logger: werelogs.Logger, shutdownTimeout?: number) {
+    constructor(size, logger, shutdownTimeout) {
         this._size = size;
         if (size < 1) {
             throw new Error('Cluster size must be greater than or equal to 1');
@@ -42,6 +30,7 @@ export default class Clustering {
      * Method called after a stop() call
      *
      * @private
+     * @return {undefined}
      */
     _afterStop() {
         // Asuming all workers shutdown gracefully
@@ -50,11 +39,10 @@ export default class Clustering {
         for (let i = 0; i < size; ++i) {
             // If the process return an error code or killed by a signal,
             // set the status
-            const status = this._workersStatus[i];
-            if (typeof status === 'number') {
-                this._status = status;
+            if (typeof this._workersStatus[i] === 'number') {
+                this._status = this._workersStatus[i];
                 break;
-            } else if (typeof status === 'string') {
+            } else if (typeof this._workersStatus[i] === 'string') {
                 this._status = 1;
                 break;
             }
@@ -68,17 +56,13 @@ export default class Clustering {
     /**
      * Method called when a worker exited
      *
-     * @param worker - Current worker
-     * @param i - Worker index
-     * @param code - Exit code
-     * @param signal - Exit signal
+     * @param {Cluster.worker} worker - Current worker
+     * @param {number} i - Worker index
+     * @param {number} code - Exit code
+     * @param {string} signal - Exit signal
+     * @return {undefined}
      */
-    _workerExited(
-        worker: Worker,
-        i: number,
-        code: number,
-        signal: string,
-    ) {
+    _workerExited(worker, i, code, signal) {
         // If the worker:
         //   - was killed by a signal
         //   - return an error code
@@ -105,9 +89,8 @@ export default class Clustering {
             this._workersStatus[i] = undefined;
         }
         this._workers[i] = undefined;
-        const timeout = this._workersTimeout[i];
-        if (timeout) {
-            clearTimeout(timeout);
+        if (this._workersTimeout[i]) {
+            clearTimeout(this._workersTimeout[i]);
             this._workersTimeout[i] = undefined;
         }
         // If we don't trigger the stop method, the watchdog
@@ -125,28 +108,29 @@ export default class Clustering {
     /**
      * Method to start a worker
      *
-     * @param i Index of the starting worker
+     * @param {number} i Index of the starting worker
+     * @return {undefined}
      */
-    startWorker(i: number) {
-        if (!cluster.isPrimary) {
+    startWorker(i) {
+        if (!cluster.isMaster) {
             return;
         }
         // Fork a new worker
         this._workers[i] = cluster.fork();
         // Listen for message from the worker
-        this._workers[i]!.on('message', msg => {
+        this._workers[i].on('message', msg => {
             // If the worker is ready, send him his id
             if (msg === 'ready') {
-                this._workers[i]!.send({ msg: 'setup', id: i });
+                this._workers[i].send({ msg: 'setup', id: i });
             }
         });
-        this._workers[i]!.on('exit', (code, signal) =>
-            this._workerExited(this._workers[i]!, i, code, signal));
+        this._workers[i].on('exit', (code, signal) =>
+            this._workerExited(this._workers[i], i, code, signal));
         // Trigger when the worker was started
-        this._workers[i]!.on('online', () => {
+        this._workers[i].on('online', () => {
             this._logger.info('Worker started', {
                 id: i,
-                childPid: this._workers[i]!.process.pid,
+                childPid: this._workers[i].process.pid,
             });
         });
     }
@@ -154,10 +138,10 @@ export default class Clustering {
     /**
      * Method to put handler on cluster exit
      *
-     * @param cb - Callback(Clustering, [exitSignal])
-     * @return Itself
+     * @param {function} cb - Callback(Clustering, [exitSignal])
+     * @return {Clustering} Itself
      */
-    onExit(cb: (clustering: Clustering, exitSignal?: string) => void) {
+    onExit(cb) {
         this._exitCb = cb;
         return this;
     }
@@ -166,33 +150,33 @@ export default class Clustering {
      * Method to start the cluster (if master) or to start the callback
      * (worker)
      *
-     * @param cb - Callback to run the worker
-     * @return itself
+     * @param {function} cb - Callback to run the worker
+     * @return {Clustering} itself
      */
-    start(cb: (clustering: Clustering) => void) {
+    start(cb) {
         process.on('SIGINT', () => this.stop('SIGINT'));
         process.on('SIGHUP', () => this.stop('SIGHUP'));
         process.on('SIGQUIT', () => this.stop('SIGQUIT'));
         process.on('SIGTERM', () => this.stop('SIGTERM'));
         process.on('SIGPIPE', () => {});
-        process.on('exit', (code?: number, signal?: string) => {
+        process.on('exit', (code, signal) => {
             if (this._exitCb) {
                 this._status = code || 0;
                 return this._exitCb(this, signal);
             }
             return process.exit(code || 0);
         });
-        process.on('uncaughtException', (err: Error) => {
+        process.on('uncaughtException', err => {
             this._logger.fatal('caught error', {
                 error: err.message,
-                stack: err.stack?.split('\n')?.map(str => str.trim()),
+                stack: err.stack.split('\n').map(str => str.trim()),
             });
             process.exit(1);
         });
-        if (!cluster.isPrimary) {
+        if (!cluster.isMaster) {
             // Waiting for message from master to
             // know the id of the slave cluster
-            process.on('message', (msg: any) => {
+            process.on('message', msg => {
                 if (msg.msg === 'setup') {
                     this._index = msg.id;
                     cb(this);
@@ -200,7 +184,7 @@ export default class Clustering {
             });
             // Send message to the master, to let him know
             // the worker has started
-            process.send?.('ready');
+            process.send('ready');
         } else {
             for (let i = 0; i < this._size; ++i) {
                 this.startWorker(i);
@@ -212,7 +196,7 @@ export default class Clustering {
     /**
      * Method to get workers
      *
-     * @return Workers
+     * @return {Cluster.Worker[]} Workers
      */
     getWorkers() {
         return this._workers;
@@ -221,7 +205,7 @@ export default class Clustering {
     /**
      * Method to get the status of the cluster
      *
-     * @return Status code
+     * @return {number} Status code
      */
     getStatus() {
         return this._status;
@@ -230,7 +214,7 @@ export default class Clustering {
     /**
      * Method to return if it's the master process
      *
-     * @return - True if master, false otherwise
+     * @return {boolean} - True if master, false otherwise
      */
     isMaster() {
         return this._index === undefined;
@@ -239,7 +223,7 @@ export default class Clustering {
     /**
      * Method to get index of the worker
      *
-     * @return Worker index, undefined if it's master
+     * @return {number|undefined} Worker index, undefined if it's master
      */
     getIndex() {
         return this._index;
@@ -248,10 +232,11 @@ export default class Clustering {
     /**
      * Method to stop the cluster
      *
-     * @param signal - Set internally when processes killed by signal
+     * @param {string} signal - Set internally when processes killed by signal
+     * @return {undefined}
      */
-    stop(signal?: string) {
-        if (!cluster.isPrimary) {
+    stop(signal) {
+        if (!cluster.isMaster) {
             if (this._exitCb) {
                 return this._exitCb(this, signal);
             }
@@ -264,17 +249,11 @@ export default class Clustering {
             }
             this._workersTimeout[i] = setTimeout(() => {
                 // Kill the worker if the sigterm was ignored or take too long
-                if (worker.process.pid) {
-                  process.kill(worker.process.pid, 'SIGKILL');
-                }
+                process.kill(worker.process.pid, 'SIGKILL');
             }, this._shutdownTimeout);
             // Send sigterm to the process, allowing to release ressources
             // and save some states
-            if (worker.process.pid) {
-              return process.kill(worker.process.pid, 'SIGTERM');
-            } else {
-              return true;
-            }
+            return process.kill(worker.process.pid, 'SIGTERM');
         });
     }
 }

lib/algos/cache/GapCache.ts

@@ -1,363 +0,0 @@
-import { OrderedSet } from '@js-sdsl/ordered-set';
-import {
-    default as GapSet,
-    GapSetEntry,
-} from './GapSet';
-
-// the API is similar but is not strictly a superset of GapSetInterface
-// so we don't extend from it
-export interface GapCacheInterface {
-    exposureDelayMs: number;
-    maxGapWeight: number;
-    size: number;
-
-    setGap: (firstKey: string, lastKey: string, weight: number) => void;
-    removeOverlappingGaps: (overlappingKeys: string[]) => number;
-    lookupGap: (minKey: string, maxKey?: string) => Promise<GapSetEntry | null>;
-    [Symbol.iterator]: () => Iterator<GapSetEntry>;
-    toArray: () => GapSetEntry[];
-};
-
-class GapCacheUpdateSet {
-    newGaps: GapSet;
-    updatedKeys: OrderedSet<string>;
-
-    constructor(maxGapWeight: number) {
-        this.newGaps = new GapSet(maxGapWeight);
-        this.updatedKeys = new OrderedSet();
-    }
-
-    addUpdateBatch(updatedKeys: OrderedSet<string>): void {
-        this.updatedKeys.union(updatedKeys);
-    }
-};
-
-/**
- * Cache of listing "gaps" i.e. ranges of keys that can be skipped
- * over during listing (because they only contain delete markers as
- * latest versions).
- *
- * Typically, a single GapCache instance would be attached to a raft session.
- *
- * The API usage is as follows:
- *
- * - Initialize a GapCache instance by calling start() (this starts an internal timer)
- *
- * - Insert a gap or update an existing one via setGap()
- *
- * - Lookup existing gaps via lookupGap()
- *
- * - Invalidate gaps that overlap a specific set of keys via removeOverlappingGaps()
- *
- * - Shut down a GapCache instance by calling stop() (this stops the internal timer)
- *
- * Gaps inserted via setGap() are not exposed immediately to lookupGap(), but only:
- *
- * - after a certain delay always larger than 'exposureDelayMs' and usually shorter
- *   than twice this value (but might be slightly longer in rare cases)
- *
- * - and only if they haven't been invalidated by a recent call to removeOverlappingGaps()
- *
- * This ensures atomicity between gap creation and invalidation from updates under
- * the condition that a gap is created from first key to last key within the time defined
- * by 'exposureDelayMs'.
- *
- * The implementation is based on two extra temporary "update sets" on top of the main
- * exposed gap set, one called "staging" and the other "frozen", each containing a
- * temporary updated gap set and a list of updated keys to invalidate gaps with (coming
- * from calls to removeOverlappingGaps()). Every "exposureDelayMs" milliseconds, the frozen
- * gaps are invalidated by all key updates coming from either of the "staging" or "frozen"
- * update set, then merged into the exposed gaps set, after which the staging updates become
- * the frozen updates and won't receive any new gap until the next cycle.
- */
-export default class GapCache implements GapCacheInterface {
-    _exposureDelayMs: number;
-    maxGaps: number;
-
-    _stagingUpdates: GapCacheUpdateSet;
-    _frozenUpdates: GapCacheUpdateSet;
-    _exposedGaps: GapSet;
-    _exposeFrozenInterval: NodeJS.Timeout | null;
-
-    /**
-     * @constructor
-     *
-     * @param {number} exposureDelayMs - minimum delay between
-     * insertion of a gap via setGap() and its exposure via
-     * lookupGap()
-     * @param {number} maxGaps - maximum number of cached gaps, after
-     * which no new gap can be added by setGap(). (Note: a future
-     * improvement could replace this by an eviction strategy)
-     * @param {number} maxGapWeight - maximum "weight" of individual
-     * cached gaps, which is also the granularity for
-     * invalidation. Individual gaps can be chained together,
-     * which lookupGap() transparently consolidates in the response
-     * into a single large gap.
-     */
-    constructor(exposureDelayMs: number, maxGaps: number, maxGapWeight: number) {
-        this._exposureDelayMs = exposureDelayMs;
-        this.maxGaps = maxGaps;
-
-        this._stagingUpdates = new GapCacheUpdateSet(maxGapWeight);
-        this._frozenUpdates = new GapCacheUpdateSet(maxGapWeight);
-        this._exposedGaps = new GapSet(maxGapWeight);
-        this._exposeFrozenInterval = null;
-    }
-
-    /**
-     * Create a GapCache from an array of exposed gap entries (used in tests)
-     *
-     * @return {GapCache} - a new GapCache instance
-     */
-    static createFromArray(
-        gaps: GapSetEntry[],
-        exposureDelayMs: number,
-        maxGaps: number,
-        maxGapWeight: number
-    ): GapCache {
-        const gapCache = new GapCache(exposureDelayMs, maxGaps, maxGapWeight);
-        gapCache._exposedGaps = GapSet.createFromArray(gaps, maxGapWeight)
-        return gapCache;
-    }
-
-    /**
-     * Internal helper to remove gaps in the staging and frozen sets
-     * overlapping with previously updated keys, right before the
-     * frozen gaps get exposed.
-     *
-     * @return {undefined}
-     */
-    _removeOverlappingGapsBeforeExpose(): void {
-        for (const { updatedKeys } of [this._stagingUpdates, this._frozenUpdates]) {
-            if (updatedKeys.size() === 0) {
-                continue;
-            }
-            for (const { newGaps } of [this._stagingUpdates, this._frozenUpdates]) {
-                if (newGaps.size === 0) {
-                    continue;
-                }
-                newGaps.removeOverlappingGaps(updatedKeys);
-            }
-        }
-    }
-
-    /**
-     * This function is the core mechanism that updates the exposed gaps in the
-     * cache. It is called on a regular interval defined by 'exposureDelayMs'.
-     *
-     * It does the following in order:
-     *
-     * - remove gaps from the frozen set that overlap with any key present in a
-     *   batch passed to removeOverlappingGaps() since the last two triggers of
-     *   _exposeFrozen()
-     *
-     * - merge the remaining gaps from the frozen set to the exposed set, which
-     *   makes them visible from calls to lookupGap()
-     *
-     * - rotate by freezing the currently staging updates and initiating a new
-     *   staging updates set
-     *
-     * @return {undefined}
-     */
-    _exposeFrozen(): void {
-        this._removeOverlappingGapsBeforeExpose();
-        for (const gap of this._frozenUpdates.newGaps) {
-            // Use a trivial strategy to keep the cache size within
-            // limits: refuse to add new gaps when the size is above
-            // the 'maxGaps' threshold. We solely rely on
-            // removeOverlappingGaps() to make space for new gaps.
-            if (this._exposedGaps.size < this.maxGaps) {
-                this._exposedGaps.setGap(gap.firstKey, gap.lastKey, gap.weight);
-            }
-        }
-        this._frozenUpdates = this._stagingUpdates;
-        this._stagingUpdates = new GapCacheUpdateSet(this.maxGapWeight);
-    }
-
-    /**
-     * Start the internal GapCache timer
-     *
-     * @return {undefined}
-     */
-    start(): void {
-        if (this._exposeFrozenInterval) {
-            return;
-        }
-        this._exposeFrozenInterval = setInterval(
-            () => this._exposeFrozen(),
-            this._exposureDelayMs);
-    }
-
-    /**
-     * Stop the internal GapCache timer
-     *
-     * @return {undefined}
-     */
-    stop(): void {
-        if (this._exposeFrozenInterval) {
-            clearInterval(this._exposeFrozenInterval);
-            this._exposeFrozenInterval = null;
-        }
-    }
-
-    /**
-     * Record a gap between two keys, associated with a weight to
-     * limit individual gap's spanning ranges in the cache, for a more
-     * granular invalidation.
-     *
-     * The function handles splitting and merging existing gaps to
-     * maintain an optimal weight of cache entries.
-     *
-     * NOTE 1: the caller must ensure that the full length of the gap
-     * between 'firstKey' and 'lastKey' has been built from a listing
-     * snapshot that is more recent than 'exposureDelayMs' milliseconds,
-     * in order to guarantee that the exposed gap will be fully
-     * covered (and potentially invalidated) from recent calls to
-     * removeOverlappingGaps().
-     *
-     * NOTE 2: a usual pattern when building a large gap from multiple
-     * calls to setGap() is to start the next gap from 'lastKey',
-     * which will be passed as 'firstKey' in the next call, so that
-     * gaps can be chained together and consolidated by lookupGap().
-     *
-     * @param {string} firstKey - first key of the gap
-     * @param {string} lastKey - last key of the gap, must be greater
-     * or equal than 'firstKey'
-     * @param {number} weight - total weight between 'firstKey' and 'lastKey'
-     * @return {undefined}
-     */
-    setGap(firstKey: string, lastKey: string, weight: number): void {
-        this._stagingUpdates.newGaps.setGap(firstKey, lastKey, weight);
-    }
-
-    /**
-     * Remove gaps that overlap with a given set of keys. Used to
-     * invalidate gaps when keys are inserted or deleted.
-     *
-     * @param {OrderedSet<string> | string[]} overlappingKeys - remove gaps that
-     * overlap with any of this set of keys
-     * @return {number} - how many gaps were removed from the exposed
-     * gaps only (overlapping gaps not yet exposed are also invalidated
-     * but are not accounted for in the returned value)
-     */
-    removeOverlappingGaps(overlappingKeys: OrderedSet<string> | string[]): number {
-        let overlappingKeysSet;
-        if (Array.isArray(overlappingKeys)) {
-            overlappingKeysSet = new OrderedSet(overlappingKeys);
-        } else {
-            overlappingKeysSet = overlappingKeys;
-        }
-        this._stagingUpdates.addUpdateBatch(overlappingKeysSet);
-        return this._exposedGaps.removeOverlappingGaps(overlappingKeysSet);
-    }
-
-    /**
-     * Lookup the next exposed gap that overlaps with [minKey, maxKey]. Internally
-     * chained gaps are coalesced in the response into a single contiguous large gap.
-     *
-     * @param {string} minKey - minimum key overlapping with the returned gap
-     * @param {string} [maxKey] - maximum key overlapping with the returned gap
-     * @return {Promise<GapSetEntry | null>} - result of the lookup if a gap
-     *   was found, null otherwise, as a Promise
-     */
-    lookupGap(minKey: string, maxKey?: string): Promise<GapSetEntry | null> {
-        return this._exposedGaps.lookupGap(minKey, maxKey);
-    }
-
-    /**
-     * Get the maximum weight setting for individual gaps.
-     *
-     * @return {number} - maximum weight of individual gaps
-     */
-    get maxGapWeight(): number {
-        return this._exposedGaps.maxWeight;
-    }
-
-    /**
-     * Set the maximum weight setting for individual gaps.
-     *
-     * @param {number} gapWeight - maximum weight of individual gaps
-     */
-    set maxGapWeight(gapWeight: number) {
-        this._exposedGaps.maxWeight = gapWeight;
-        // also update transient gap sets
-        this._stagingUpdates.newGaps.maxWeight = gapWeight;
-        this._frozenUpdates.newGaps.maxWeight = gapWeight;
-    }
-
-    /**
-     * Get the exposure delay in milliseconds, which is the minimum
-     * time after which newly cached gaps will be exposed by
-     * lookupGap().
-     *
-     * @return {number} - exposure delay in milliseconds
-     */
-    get exposureDelayMs(): number {
-        return this._exposureDelayMs;
-    }
-
-    /**
-     * Set the exposure delay in milliseconds, which is the minimum
-     * time after which newly cached gaps will be exposed by
-     * lookupGap(). Setting this attribute automatically updates the
-     * internal state to honor the new value.
-     *
-     * @param {number} - exposure delay in milliseconds
-     */
-    set exposureDelayMs(exposureDelayMs: number) {
-        if (exposureDelayMs !== this._exposureDelayMs) {
-            this._exposureDelayMs = exposureDelayMs;
-            if (this._exposeFrozenInterval) {
-                // invalidate all pending gap updates, as the new interval may not be
-                // safe for them
-                this._stagingUpdates = new GapCacheUpdateSet(this.maxGapWeight);
-                this._frozenUpdates = new GapCacheUpdateSet(this.maxGapWeight);
-
-                // reinitialize the _exposeFrozenInterval timer with the updated delay
-                this.stop();
-                this.start();
-            }
-        }
-    }
-
-    /**
-     * Get the number of exposed gaps
-     *
-     * @return {number} number of exposed gaps
-     */
-    get size(): number {
-        return this._exposedGaps.size;
-    }
-
-    /**
-     * Iterate over exposed gaps
-     *
-     * @return {Iterator<GapSetEntry>} an iterator over exposed gaps
-     */
-    [Symbol.iterator](): Iterator<GapSetEntry> {
-        return this._exposedGaps[Symbol.iterator]();
-    }
-
-    /**
-     * Get an array of all exposed gaps
-     *
-     * @return {GapSetEntry[]} array of exposed gaps
-     */
-    toArray(): GapSetEntry[] {
-        return this._exposedGaps.toArray();
-    }
-
-    /**
-     * Clear all exposed and staging gaps from the cache.
-     *
-     * Note: retains invalidating updates from removeOverlappingGaps()
-     * for correctness of gaps inserted afterwards.
-     *
-     * @return {undefined}
-     */
-    clear(): void {
-        this._stagingUpdates.newGaps = new GapSet(this.maxGapWeight);
-        this._frozenUpdates.newGaps = new GapSet(this.maxGapWeight);
-        this._exposedGaps = new GapSet(this.maxGapWeight);
-    }
-}

lib/algos/cache/GapSet.ts

@@ -1,366 +0,0 @@
-import assert from 'assert';
-import { OrderedSet } from '@js-sdsl/ordered-set';
-
-import errors from '../../errors';
-
-export type GapSetEntry = {
-    firstKey: string,
-    lastKey: string,
-    weight: number,
-};
-
-export interface GapSetInterface {
-    maxWeight: number;
-    size: number;
-
-    setGap: (firstKey: string, lastKey: string, weight: number) => GapSetEntry;
-    removeOverlappingGaps: (overlappingKeys: string[]) => number;
-    lookupGap: (minKey: string, maxKey?: string) => Promise<GapSetEntry | null>;
-    [Symbol.iterator]: () => Iterator<GapSetEntry>;
-    toArray: () => GapSetEntry[];
-};
-
-/**
- * Specialized data structure to support caching of listing "gaps",
- * i.e. ranges of keys that can be skipped over during listing
- * (because they only contain delete markers as latest versions)
- */
-export default class GapSet implements GapSetInterface, Iterable<GapSetEntry> {
-    _gaps: OrderedSet<GapSetEntry>;
-    _maxWeight: number;
-
-    /**
-     * @constructor
-
-     * @param {number} maxWeight - weight threshold for each cached
-     * gap (unitless). Triggers splitting gaps when reached
-     */
-    constructor(maxWeight: number) {
-        this._gaps = new OrderedSet(
-            [],
-            (left: GapSetEntry, right: GapSetEntry) => (
-                left.firstKey < right.firstKey ? -1 :
-                left.firstKey > right.firstKey ? 1 : 0
-            )
-        );
-        this._maxWeight = maxWeight;
-    }
-
-    /**
-     * Create a GapSet from an array of gap entries (used in tests)
-     */
-    static createFromArray(gaps: GapSetEntry[], maxWeight: number): GapSet {
-        const gapSet = new GapSet(maxWeight);
-        for (const gap of gaps) {
-            gapSet._gaps.insert(gap);
-        }
-        return gapSet;
-    }
-
-    /**
-     * Record a gap between two keys, associated with a weight to limit
-     * individual gap sizes in the cache.
-     *
-     * The function handles splitting and merging existing gaps to
-     * maintain an optimal weight of cache entries.
-     *
-     * @param {string} firstKey - first key of the gap
-     * @param {string} lastKey - last key of the gap, must be greater
-     * or equal than 'firstKey'
-     * @param {number} weight - total weight between 'firstKey' and 'lastKey'
-     * @return {GapSetEntry} - existing or new gap entry
-     */
-    setGap(firstKey: string, lastKey: string, weight: number): GapSetEntry {
-        assert(lastKey >= firstKey);
-
-        // Step 1/4: Find the closest left-overlapping gap, and either re-use it
-        // or chain it with a new gap depending on the weights if it exists (otherwise
-        // just creates a new gap).
-        const curGapIt = this._gaps.reverseLowerBound(<GapSetEntry>{ firstKey });
-        let curGap;
-        if (curGapIt.isAccessible()) {
-            curGap = curGapIt.pointer;
-            if (curGap.lastKey >= lastKey) {
-                // return fully overlapping gap already cached
-                return curGap;
-            }
-        }
-        let remainingWeight = weight;
-        if (!curGap                         // no previous gap
-            || curGap.lastKey < firstKey    // previous gap not overlapping
-            || (curGap.lastKey === firstKey // previous gap overlapping by one key...
-                && curGap.weight + weight > this._maxWeight) // ...but we can't extend it
-           ) {
-            // create a new gap indexed by 'firstKey'
-            curGap = { firstKey, lastKey: firstKey, weight: 0 };
-            this._gaps.insert(curGap);
-        } else if (curGap.lastKey > firstKey && weight > this._maxWeight) {
-            // previous gap is either fully or partially contained in the new gap
-            // and cannot be extended: substract its weight from the total (heuristic
-            // in case the previous gap doesn't start at 'firstKey', which is the
-            // uncommon case)
-            remainingWeight -= curGap.weight;
-
-            // there may be an existing chained gap starting with the previous gap's
-            // 'lastKey': use it if it exists
-            const chainedGapIt = this._gaps.find(<GapSetEntry>{ firstKey: curGap.lastKey });
-            if (chainedGapIt.isAccessible()) {
-                curGap = chainedGapIt.pointer;
-            } else {
-                // no existing chained gap: chain a new gap to the previous gap
-                curGap = {
-                    firstKey: curGap.lastKey,
-                    lastKey: curGap.lastKey,
-                    weight: 0,
-                };
-                this._gaps.insert(curGap);
-            }
-        }
-        // Step 2/4: Cleanup existing gaps fully included in firstKey -> lastKey, and
-        // aggregate their weights in curGap to define the minimum weight up to the
-        // last merged gap.
-        let nextGap;
-        while (true) {
-            const nextGapIt = this._gaps.upperBound(<GapSetEntry>{ firstKey: curGap.firstKey });
-            nextGap = nextGapIt.isAccessible() && nextGapIt.pointer;
-            // stop the cleanup when no more gap or if the next gap is not fully
-            // included in curGap
-            if (!nextGap || nextGap.lastKey > lastKey) {
-                break;
-            }
-            this._gaps.eraseElementByIterator(nextGapIt);
-            curGap.lastKey = nextGap.lastKey;
-            curGap.weight += nextGap.weight;
-        }
-
-        // Step 3/4: Extend curGap to lastKey, adjusting the weight.
-        // At this point, curGap weight is the minimum weight of the finished gap, save it
-        // for step 4.
-        let minMergedWeight = curGap.weight;
-        if (curGap.lastKey === firstKey && firstKey !== lastKey) {
-            // extend the existing gap by the full amount 'firstKey -> lastKey'
-            curGap.lastKey = lastKey;
-            curGap.weight += remainingWeight;
-        } else if (curGap.lastKey <= lastKey) {
-            curGap.lastKey = lastKey;
-            curGap.weight = remainingWeight;
-        }
-
-        // Step 4/4: Find the closest right-overlapping gap, and if it exists, either merge
-        // it or chain it with curGap depending on the weights.
-        if (nextGap && nextGap.firstKey <= lastKey) {
-            // nextGap overlaps with the new gap: check if we can merge it
-            minMergedWeight += nextGap.weight;
-            let mergedWeight;
-            if (lastKey === nextGap.firstKey) {
-                // nextGap is chained with curGap: add the full weight of nextGap
-                mergedWeight = curGap.weight + nextGap.weight;
-            } else {
-                // strict overlap: don't add nextGap's weight unless
-                // it's larger than the sum of merged ranges (as it is
-                // then included in `minMergedWeight`)
-                mergedWeight = Math.max(curGap.weight, minMergedWeight);
-            }
-            if (mergedWeight <= this._maxWeight) {
-                // merge nextGap into curGap
-                curGap.lastKey = nextGap.lastKey;
-                curGap.weight = mergedWeight;
-                this._gaps.eraseElementByKey(nextGap);
-            } else {
-                // adjust the last key to chain with nextGap and substract the next
-                // gap's weight from curGap (heuristic)
-                curGap.lastKey = nextGap.firstKey;
-                curGap.weight = Math.max(mergedWeight - nextGap.weight, 0);
-                curGap = nextGap;
-            }
-        }
-        // return a copy of curGap
-        return Object.assign({}, curGap);
-    }
-
-    /**
-     * Remove gaps that overlap with one or more keys in a given array or
-     * OrderedSet. Used to invalidate gaps when keys are inserted or deleted.
-     *
-     * @param {OrderedSet<string> | string[]} overlappingKeys - remove gaps that overlap
-     * with any of this set of keys
-     * @return {number} - how many gaps were removed
-     */
-    removeOverlappingGaps(overlappingKeys: OrderedSet<string> | string[]): number {
-        // To optimize processing with a large number of keys and/or gaps, this function:
-        //
-        // 1. converts the overlappingKeys array to a OrderedSet (if not already a OrderedSet)
-        // 2. queries both the gaps set and the overlapping keys set in a loop, which allows:
-        //    - skipping ranges of overlapping keys at once when there is no new overlapping gap
-        //    - skipping ranges of gaps at once when there is no overlapping key
-        //
-        // This way, it is efficient when the number of non-overlapping gaps is large
-        // (which is the most common case in practice).
-
-        let overlappingKeysSet;
-        if (Array.isArray(overlappingKeys)) {
-            overlappingKeysSet = new OrderedSet(overlappingKeys);
-        } else {
-            overlappingKeysSet = overlappingKeys;
-        }
-        const firstKeyIt = overlappingKeysSet.begin();
-        let currentKey = firstKeyIt.isAccessible() && firstKeyIt.pointer;
-        let nRemoved = 0;
-        while (currentKey) {
-            const closestGapIt = this._gaps.reverseUpperBound(<GapSetEntry>{ firstKey: currentKey });
-            if (closestGapIt.isAccessible()) {
-                const closestGap = closestGapIt.pointer;
-                if (currentKey <= closestGap.lastKey) {
-                    // currentKey overlaps closestGap: remove the gap
-                    this._gaps.eraseElementByIterator(closestGapIt);
-                    nRemoved += 1;
-                }
-            }
-            const nextGapIt = this._gaps.lowerBound(<GapSetEntry>{ firstKey: currentKey });
-            if (!nextGapIt.isAccessible()) {
-                // no more gap: we're done
-                return nRemoved;
-            }
-            const nextGap = nextGapIt.pointer;
-            // advance to the last key potentially overlapping with nextGap
-            let currentKeyIt = overlappingKeysSet.reverseLowerBound(nextGap.lastKey);
-            if (currentKeyIt.isAccessible()) {
-                currentKey = currentKeyIt.pointer;
-                if (currentKey >= nextGap.firstKey) {
-                    // currentKey overlaps nextGap: remove the gap
-                    this._gaps.eraseElementByIterator(nextGapIt);
-                    nRemoved += 1;
-                }
-            }
-            // advance to the first key potentially overlapping with another gap
-            currentKeyIt = overlappingKeysSet.lowerBound(nextGap.lastKey);
-            currentKey = currentKeyIt.isAccessible() && currentKeyIt.pointer;
-        }
-        return nRemoved;
-    }
-
-    /**
-     * Internal helper to coalesce multiple chained gaps into a single gap.
-     *
-     * It is only used to construct lookupGap() return values and
-     * doesn't modify the GapSet.
-     *
-     * NOTE: The function may take a noticeable amount of time and CPU
-     * to execute if a large number of chained gaps have to be
-     * coalesced, but it should never take more than a few seconds. In
-     * most cases it should take less than a millisecond. It regularly
-     * yields to the nodejs event loop to avoid blocking it during a
-     * long execution.
-     *
-     * @param {GapSetEntry} firstGap - first gap of the chain to coalesce with
-     * the next ones in the chain
-     * @return {Promise<GapSetEntry>} - a new coalesced entry, as a Promise
-     */
-    _coalesceGapChain(firstGap: GapSetEntry): Promise<GapSetEntry> {
-        return new Promise(resolve => {
-            const coalescedGap: GapSetEntry = Object.assign({}, firstGap);
-            const coalesceGapChainIteration = () => {
-                // efficiency trade-off: 100 iterations of log(N) complexity lookups should
-                // not block the event loop for too long
-                for (let opCounter = 0; opCounter < 100; ++opCounter) {
-                    const chainedGapIt = this._gaps.find(
-                            <GapSetEntry>{ firstKey: coalescedGap.lastKey });
-                    if (!chainedGapIt.isAccessible()) {
-                        // chain is complete
-                        return resolve(coalescedGap);
-                    }
-                    const chainedGap = chainedGapIt.pointer;
-                    if (chainedGap.firstKey === chainedGap.lastKey) {
-                        // found a single-key gap: chain is complete
-                        return resolve(coalescedGap);
-                    }
-                    coalescedGap.lastKey = chainedGap.lastKey;
-                    coalescedGap.weight += chainedGap.weight;
-                }
-                // yield to the event loop before continuing the process
-                // of coalescing the gap chain
-                return process.nextTick(coalesceGapChainIteration);
-            };
-            coalesceGapChainIteration();
-        });
-    }
-
-    /**
-     * Lookup the next gap that overlaps with [minKey, maxKey]. Internally chained
-     * gaps are coalesced in the response into a single contiguous large gap.
-     *
-     * @param {string} minKey - minimum key overlapping with the returned gap
-     * @param {string} [maxKey] - maximum key overlapping with the returned gap
-     * @return {Promise<GapSetEntry | null>} - result of the lookup if a gap
-     *   was found, null otherwise, as a Promise
-     */
-    async lookupGap(minKey: string, maxKey?: string): Promise<GapSetEntry | null> {
-        let firstGap: GapSetEntry | null = null;
-        const minGapIt = this._gaps.reverseLowerBound(<GapSetEntry>{ firstKey: minKey });
-        const minGap = minGapIt.isAccessible() && minGapIt.pointer;
-        if (minGap && minGap.lastKey >= minKey) {
-            firstGap = minGap;
-        } else {
-            const maxGapIt = this._gaps.upperBound(<GapSetEntry>{ firstKey: minKey });
-            const maxGap = maxGapIt.isAccessible() && maxGapIt.pointer;
-            if (maxGap && (maxKey === undefined || maxGap.firstKey <= maxKey)) {
-                firstGap = maxGap;
-            }
-        }
-        if (!firstGap) {
-            return null;
-        }
-        return this._coalesceGapChain(firstGap);
-    }
-
-    /**
-     * Get the maximum weight setting for individual gaps.
-     *
-     * @return {number} - maximum weight of individual gaps
-     */
-    get maxWeight(): number {
-        return this._maxWeight;
-    }
-
-    /**
-     * Set the maximum weight setting for individual gaps.
-     *
-     * @param {number} gapWeight - maximum weight of individual gaps
-     */
-    set maxWeight(gapWeight: number) {
-        this._maxWeight = gapWeight;
-    }
-
-    /**
-     * Get the number of gaps stored in this set.
-     *
-     * @return {number} - number of gaps stored in this set
-     */
-    get size(): number {
-        return this._gaps.size();
-    }
-
-    /**
-     * Iterate over each gap of the set, ordered by first key
-     *
-     * @return {Iterator<GapSetEntry>} - an iterator over all gaps
-     *   Example:
-     *     for (const gap of myGapSet) { ... }
-     */
-    [Symbol.iterator](): Iterator<GapSetEntry> {
-        return this._gaps[Symbol.iterator]();
-    }
-
-    /**
-     * Return an array containing all gaps, ordered by first key
-     *
-     * NOTE: there is a toArray() method in the OrderedSet implementation
-     * but it does not scale well and overflows the stack quickly. This is
-     * why we provide an implementation based on an iterator.
-     *
-     * @return {GapSetEntry[]} - an array containing all gaps
-     */
-    toArray(): GapSetEntry[] {
-        return [...this];
-    }
-}

lib/algos/cache/LRUCache.ts

@@ -1,4 +1,4 @@
-const assert = require('assert');
+import assert from 'assert';
 
 /**
  * @class
@@ -6,13 +6,19 @@ const assert = require('assert');
  * number of items and a Least Recently Used (LRU) strategy for
  * eviction.
  */
-class LRUCache {
+export default class LRUCache {
+    _maxEntries;
+    _entryMap;
+    _entryCount;
+    _lruTail;
+    _lruHead;
+
     /**
      * @constructor
-     * @param {number} maxEntries - maximum number of entries kept in
+     * @param maxEntries - maximum number of entries kept in
      * the cache
      */
-    constructor(maxEntries) {
+    constructor(maxEntries: number) {
         assert(maxEntries >= 1);
         this._maxEntries = maxEntries;
         this.clear();
@@ -22,12 +28,12 @@ class LRUCache {
      * Add or update the value associated to a key in the cache,
      * making it the most recently accessed for eviction purpose.
      *
-     * @param {string} key - key to add
-     * @param {object} value - associated value (can be of any type)
-     * @return {boolean} true if the cache contained an entry with
+     * @param key - key to add
+     * @param value - associated value (can be of any type)
+     * @return true if the cache contained an entry with
      * this key, false if it did not
      */
-    add(key, value) {
+    add(key: string, value): boolean {
         let entry = this._entryMap[key];
         if (entry) {
             entry.value = value;
@@ -54,12 +60,12 @@ class LRUCache {
      * Get the value associated to a key in the cache, making it the
      * most recently accessed for eviction purpose.
      *
-     * @param {string} key - key of which to fetch the associated value
-     * @return {object|undefined} - returns the associated value if
+     * @param key - key of which to fetch the associated value
+     * @return returns the associated value if
      * exists in the cache, or undefined if not found - either if the
      * key was never added or if it has been evicted from the cache.
      */
-    get(key) {
+    get(key: string) {
         const entry = this._entryMap[key];
         if (entry) {
             // make the entry the most recently used by re-pushing it
@@ -74,12 +80,12 @@ class LRUCache {
     /**
      * Remove an entry from the cache if exists
      *
-     * @param {string} key - key to remove
-     * @return {boolean} true if an entry has been removed, false if
+     * @param key - key to remove
+     * @return true if an entry has been removed, false if
      * there was no entry with this key in the cache - either if the
      * key was never added or if it has been evicted from the cache.
      */
-    remove(key) {
+    remove(key: string): boolean {
         const entry = this._entryMap[key];
         if (entry) {
             this._removeEntry(entry);
@@ -91,16 +97,14 @@ class LRUCache {
     /**
      * Get the current number of cached entries
      *
-     * @return {number} current number of cached entries
+     * @return current number of cached entries
      */
-    count() {
+    count(): number {
         return this._entryCount;
     }
 
     /**
      * Remove all entries from the cache
-     *
-     * @return {undefined}
      */
     clear() {
         this._entryMap = {};
@@ -113,8 +117,7 @@ class LRUCache {
      * Push an entry to the front of the LRU list, making it the most
      * recently accessed
      *
-     * @param {object} entry - entry to push
-     * @return {undefined}
+     * @param entry - entry to push
      */
     _lruPushEntry(entry) {
         /* eslint-disable no-param-reassign */
@@ -133,8 +136,7 @@ class LRUCache {
     /**
      * Remove an entry from the LRU list
      *
-     * @param {object} entry - entry to remove
-     * @return {undefined}
+     * @param entry - entry to remove
      */
     _lruRemoveEntry(entry) {
         /* eslint-disable no-param-reassign */
@@ -154,8 +156,7 @@ class LRUCache {
     /**
      * Helper function to remove an existing entry from the cache
      *
-     * @param {object} entry - cache entry to remove
-     * @return {undefined}
+     * @param entry - cache entry to remove
      */
     _removeEntry(entry) {
         this._lruRemoveEntry(entry);
@@ -163,5 +164,3 @@ class LRUCache {
         this._entryCount -= 1;
     }
 }
-
-module.exports = LRUCache;

lib/algos/heap/Heap.ts

@@ -1,124 +0,0 @@
-export enum HeapOrder {
-    Min = -1,
-    Max = 1,
-}
-
-export enum CompareResult {
-    LT = -1,
-    EQ = 0,
-    GT = 1,
-}
-
-export type CompareFunction = (x: any, y: any) => CompareResult;
-
-export class Heap {
-    size: number;
-    _maxSize: number;
-    _order: HeapOrder;
-    _heap: any[];
-    _cmpFn: CompareFunction;
-    
-    constructor(size: number, order: HeapOrder, cmpFn: CompareFunction) {
-        this.size = 0;
-        this._maxSize = size;
-        this._order = order;
-        this._cmpFn = cmpFn;
-        this._heap = new Array<any>(this._maxSize);
-    }
-
-    _parent(i: number): number {
-        return Math.floor((i - 1) / 2);
-    }
-
-    _left(i: number): number {
-        return Math.floor((2 * i) + 1);
-    }
-
-    _right(i: number): number {
-        return Math.floor((2 * i) + 2);
-    }
-
-    _shouldSwap(childIdx: number, parentIdx: number): boolean {
-        return this._cmpFn(this._heap[childIdx], this._heap[parentIdx]) as number === this._order as number;
-    }
-
-    _swap(i: number, j: number) {
-        const tmp = this._heap[i];
-        this._heap[i] = this._heap[j];
-        this._heap[j] = tmp;
-    }
-
-    _heapify(i: number) {
-        const l = this._left(i);
-        const r = this._right(i);
-        let c = i;
-
-        if (l < this.size && this._shouldSwap(l, c)) {
-            c = l;
-        }
-
-        if (r < this.size && this._shouldSwap(r, c)) {
-            c = r;
-        }
-
-        if (c != i) {
-            this._swap(c, i);
-            this._heapify(c);
-        }
-    }
-
-    add(item: any): any {
-        if (this.size >= this._maxSize) {
-            return new Error('Max heap size reached');
-        }
-
-        ++this.size;
-        let c = this.size - 1;
-        this._heap[c] = item;
-
-        while (c > 0) {
-            if (!this._shouldSwap(c, this._parent(c))) {
-                return null;
-            }
-
-            this._swap(c, this._parent(c));
-            c = this._parent(c);
-        }
-
-        return null;
-    };
-
-    remove(): any {
-        if (this.size <= 0) {
-            return null;
-        }
-
-        const ret = this._heap[0];
-        this._heap[0] = this._heap[this.size - 1];
-        this._heapify(0);
-        --this.size;
-
-        return ret;
-    };
-
-    peek(): any {
-        if (this.size <= 0) {
-            return null;
-        }
-
-        return this._heap[0];
-    };
-}
-
-export class MinHeap extends Heap {
-    constructor(size: number, cmpFn: CompareFunction) {
-        super(size, HeapOrder.Min, cmpFn);
-    }
-}
-
-export class MaxHeap extends Heap {
-    constructor(size: number, cmpFn: CompareFunction) {
-        super(size, HeapOrder.Max, cmpFn);
-    }
-} 
-

lib/algos/index.ts

@@ -0,0 +1,5 @@
+export * as list from './list/exportAlgos';
+export * as DelimiterTools from './list/tools';
+export { default as LRUCache } from './cache/LRUCache';
+export { default as MergeStream } from './stream/MergeStream';
+export { default as SortedSet } from './set/SortedSet';

lib/algos/list/Extension.ts

@@ -1,7 +1,4 @@
-'use strict'; // eslint-disable-line strict
-
-const { FILTER_ACCEPT, SKIP_NONE } = require('./tools');
-
+import { FILTER_SKIP, SKIP_NONE } from './tools';
 // Use a heuristic to amortize the cost of JSON
 // serialization/deserialization only on largest metadata where the
 // potential for size reduction is high, considering the bulk of the
@@ -22,7 +19,12 @@ const TRIM_METADATA_MIN_BLOB_SIZE = 10000;
 /**
  *  Base class of listing extensions.
  */
-class Extension {
+export default class Extension {
+    parameters;
+    logger;
+    res?: any[];
+    keys: number;
+
     /**
      * This takes a list of parameters and a logger as the inputs.
      * Derivatives should have their own format regarding parameters.
@@ -51,14 +53,14 @@ class Extension {
      * heavy unused fields, or left untouched (depending on size
      * heuristics)
      */
-    trimMetadata(value) {
-        let ret = undefined;
+    trimMetadata(value: string): string {
+        let ret: any = undefined;
         if (value.length >= TRIM_METADATA_MIN_BLOB_SIZE) {
             try {
                 ret = JSON.parse(value);
                 delete ret.location;
                 ret = JSON.stringify(ret);
-            } catch (e) {
+            } catch (e: any) {
                 // Prefer returning an unfiltered data rather than
                 // stopping the service in case of parsing failure.
                 // The risk of this approach is a potential
@@ -66,7 +68,8 @@ class Extension {
                 // used by repd.
                 this.logger.warn(
                     'Could not parse Object Metadata while listing',
-                    { err: e.toString() });
+                    { err: e.toString() }
+                );
             }
         }
         return ret || value;
@@ -92,38 +95,31 @@ class Extension {
      * @param {object} entry - a listing entry from metadata
      *                         expected format: { key, value }
      * @return {number} - result of filtering the entry:
-     *                    FILTER_ACCEPT: entry is accepted and may or not be included
-     *                                   in the result
-     *                    FILTER_SKIP: listing may skip directly (with "gte" param) to
-     *                                 the key returned by the skipping() method
-     *                    FILTER_END: the results are complete, listing can be stopped
+     *                    > 0: entry is accepted and included in the result
+     *                    = 0: entry is accepted but not included (skipping)
+     *                    < 0: entry is not accepted, listing should finish
      */
-    filter(/* entry: { key, value } */) {
-        return FILTER_ACCEPT;
+    filter(entry): number {
+        return entry ? FILTER_SKIP : FILTER_SKIP;
     }
 
     /**
-     * Provides the next key at which the listing task is allowed to skip to.
-     * This could allow to skip over:
-     * - a key prefix ending with the delimiter
-     * - all remaining versions of an object when doing a current
-     *   versions listing in v0 format
-     * - a cached "gap" of deleted objects when doing a current
-     *   versions listing in v0 format
+     * Provides the insight into why filter is skipping an entry. This could be
+     * because it is skipping a range of delimited keys or a range of specific
+     * version when doing master version listing.
      *
-     * @return {string} - the next key at which the listing task is allowed to skip to
+     * @return the insight: a common prefix or a master key,
+     *                                 or SKIP_NONE if there is no insight
      */
-    skipping() {
+    skipping(): string | undefined {
         return SKIP_NONE;
     }
 
     /**
      * Get the listing resutls. Format depends on derivatives' specific logic.
-     * @return {Array} - The listed elements
+     * @return The listed elements
      */
     result() {
         return this.res;
     }
 }
-
-module.exports.default = Extension;

lib/algos/list/MPU.ts

@@ -1,9 +1,12 @@
-'use strict'; // eslint-disable-line strict
-
-const { inc, checkLimit, listingParamsMasterKeysV0ToV1,
-    FILTER_END, FILTER_ACCEPT, SKIP_NONE } = require('./tools');
+import {
+    inc,
+    checkLimit,
+    listingParamsMasterKeysV0ToV1,
+    FILTER_END,
+    FILTER_ACCEPT,
+} from './tools';
 const DEFAULT_MAX_KEYS = 1000;
-const VSConst = require('../../versioning/constants').VersioningConstants;
+import { VersioningConstants as VSConst } from '../../versioning/constants';
 const { DbPrefixes, BucketVersioningKeyFormat } = VSConst;
 
 function numberDefault(num, defaultNum) {
@@ -14,7 +17,22 @@ function numberDefault(num, defaultNum) {
 /**
  *  Class for the MultipartUploads extension
  */
-class MultipartUploads {
+export class MultipartUploads {
+    params
+    vFormat
+    CommonPrefixes
+    Uploads
+    IsTruncated
+    NextKeyMarker
+    NextUploadIdMarker
+    prefixLength
+    queryPrefixLength
+    keys
+    maxKeys
+    delimiter
+    splitter
+    logger
+
     /**
      *  Constructor of the extension
      *  Init and check parameters
@@ -39,22 +57,26 @@ class MultipartUploads {
         this.splitter = params.splitter;
         this.logger = logger;
 
-        Object.assign(this, {
-            [BucketVersioningKeyFormat.v0]: {
-                genMDParams: this.genMDParamsV0,
-                getObjectKey: this.getObjectKeyV0,
-            },
-            [BucketVersioningKeyFormat.v1]: {
-                genMDParams: this.genMDParamsV1,
-                getObjectKey: this.getObjectKeyV1,
-            },
-        }[this.vFormat]);
+        Object.assign(
+            this,
+            {
+                [BucketVersioningKeyFormat.v0]: {
+                    genMDParams: this.genMDParamsV0,
+                    getObjectKey: this.getObjectKeyV0,
+                },
+                [BucketVersioningKeyFormat.v1]: {
+                    genMDParams: this.genMDParamsV1,
+                    getObjectKey: this.getObjectKeyV1,
+                },
+            }[this.vFormat]
+        );
     }
 
     genMDParamsV0() {
         const params = {};
         if (this.params.keyMarker) {
-            params.gt = `overview${this.params.splitter}` +
+            params.gt =
+                `overview${this.params.splitter}` +
                 `${this.params.keyMarker}${this.params.splitter}`;
             if (this.params.uploadIdMarker) {
                 params.gt += `${this.params.uploadIdMarker}`;
@@ -147,14 +169,20 @@ class MultipartUploads {
         if (this.delimiter) {
             const mpuPrefixSlice = `overview${this.splitter}`.length;
             const mpuKey = key.slice(mpuPrefixSlice);
-            const commonPrefixIndex = mpuKey.indexOf(this.delimiter,
-                this.queryPrefixLength);
+            const commonPrefixIndex = mpuKey.indexOf(
+                this.delimiter,
+                this.queryPrefixLength
+            );
 
             if (commonPrefixIndex === -1) {
                 this.addUpload(value);
             } else {
-                this.addCommonPrefix(mpuKey.substring(0,
-                    commonPrefixIndex + this.delimiter.length));
+                this.addCommonPrefix(
+                    mpuKey.substring(
+                        0,
+                        commonPrefixIndex + this.delimiter.length
+                    )
+                );
             }
         } else {
             this.addUpload(value);
@@ -163,7 +191,7 @@ class MultipartUploads {
     }
 
     skipping() {
-        return SKIP_NONE;
+        return '';
     }
 
     /**
@@ -182,7 +210,3 @@ class MultipartUploads {
         };
     }
 }
-
-module.exports = {
-    MultipartUploads,
-};

lib/algos/list/basic.ts

@@ -1,14 +1,17 @@
-'use strict'; // eslint-disable-line strict
+import Extension from './Extension';
+import { checkLimit, FILTER_END, FILTER_ACCEPT, FILTER_SKIP } from './tools';
 
-const Extension = require('./Extension').default;
-
-const { checkLimit, FILTER_END, FILTER_ACCEPT } = require('./tools');
 const DEFAULT_MAX_KEYS = 10000;
 
 /**
  *  Class of an extension doing the simple listing
  */
-class List extends Extension {
+export class List extends Extension {
+    maxKeys: number;
+    filterKey;
+    filterKeyStartsWith;
+    res: any[];
+
     /**
      *  Constructor
      *  Set the logger and the res
@@ -30,15 +33,17 @@ class List extends Extension {
     }
 
     genMDParams() {
-        const params = this.parameters ? {
-            gt: this.parameters.gt,
-            gte: this.parameters.gte || this.parameters.start,
-            lt: this.parameters.lt,
-            lte: this.parameters.lte || this.parameters.end,
-            keys: this.parameters.keys,
-            values: this.parameters.values,
-        } : {};
-        Object.keys(params).forEach(key => {
+        const params = this.parameters
+            ? {
+                  gt: this.parameters.gt,
+                  gte: this.parameters.gte || this.parameters.start,
+                  lt: this.parameters.lt,
+                  lte: this.parameters.lte || this.parameters.end,
+                  keys: this.parameters.keys,
+                  values: this.parameters.values,
+              }
+            : {};
+        Object.keys(params).forEach((key) => {
             if (params[key] === null || params[key] === undefined) {
                 delete params[key];
             }
@@ -53,29 +58,30 @@ class List extends Extension {
      *
      * @return {Boolean} Returns true if matches, else false.
      */
-    customFilter(value) {
-        let _value;
+    customFilter(value: string): boolean {
+        let _value: any;
         try {
             _value = JSON.parse(value);
-        } catch (e) {
+        } catch (e: any) {
             // Prefer returning an unfiltered data rather than
             // stopping the service in case of parsing failure.
             // The risk of this approach is a potential
             // reproduction of MD-692, where too much memory is
             // used by repd.
-            this.logger.warn(
-                'Could not parse Object Metadata while listing',
-                { err: e.toString() });
+            this.logger.warn('Could not parse Object Metadata while listing', {
+                err: e.toString(),
+            });
             return false;
         }
         if (_value.customAttributes !== undefined) {
             for (const key of Object.keys(_value.customAttributes)) {
-                if (this.filterKey !== undefined &&
-                    key === this.filterKey) {
+                if (this.filterKey !== undefined && key === this.filterKey) {
                     return true;
                 }
-                if (this.filterKeyStartsWith !== undefined &&
-                    key.startsWith(this.filterKeyStartsWith)) {
+                if (
+                    this.filterKeyStartsWith !== undefined &&
+                    key.startsWith(this.filterKeyStartsWith)
+                ) {
                     return true;
                 }
             }
@@ -90,16 +96,18 @@ class List extends Extension {
      *  @return {number} - > 0 : continue listing
      *                     < 0 : listing done
      */
-    filter(elem) {
-        // Check if the result array is full
+    filter(elem): number {
+        // Check first in case of maxkeys <= 0
         if (this.keys >= this.maxKeys) {
             return FILTER_END;
         }
-        if ((this.filterKey !== undefined ||
-             this.filterKeyStartsWith !== undefined) &&
+        if (
+            (this.filterKey !== undefined ||
+                this.filterKeyStartsWith !== undefined) &&
             typeof elem === 'object' &&
-            !this.customFilter(elem.value)) {
-            return FILTER_ACCEPT;
+            !this.customFilter(elem.value)
+        ) {
+            return FILTER_SKIP;
         }
         if (typeof elem === 'object') {
             this.res.push({
@@ -121,7 +129,3 @@ class List extends Extension {
         return this.res;
     }
 }
-
-module.exports = {
-    List,
-};

lib/algos/list/delimiter.ts

@@ -1,48 +1,29 @@
-'use strict'; // eslint-disable-line strict
-
-const Extension = require('./Extension').default;
-const { inc, listingParamsMasterKeysV0ToV1,
-    FILTER_END, FILTER_ACCEPT, FILTER_SKIP, SKIP_NONE } = require('./tools');
-const VSConst = require('../../versioning/constants').VersioningConstants;
-const { DbPrefixes, BucketVersioningKeyFormat } = VSConst;
-
-export interface FilterState {
-    id: number,
-};
-
-export interface FilterReturnValue {
+import Extension from './Extension';
+import {
+    inc,
+    listingParamsMasterKeysV0ToV1,
+    FILTER_END,
     FILTER_ACCEPT,
     FILTER_SKIP,
-    FILTER_END,
-};
+} from './tools';
+import { VersioningConstants as VSConst } from '../../versioning/constants';
+const { DbPrefixes, BucketVersioningKeyFormat } = VSConst;
 
-export const enum DelimiterFilterStateId {
-    NotSkipping = 1,
-    SkippingPrefix = 2,
-};
-
-export interface DelimiterFilterState_NotSkipping extends FilterState {
-    id: DelimiterFilterStateId.NotSkipping,
-};
-
-export interface DelimiterFilterState_SkippingPrefix extends FilterState {
-    id: DelimiterFilterStateId.SkippingPrefix,
-    prefix: string;
-};
-
-type KeyHandler = (key: string, value: string) => FilterReturnValue;
-
-export type ResultObject = {
-    CommonPrefixes: string[];
-    Contents: {
-        key: string;
-        value: string;
-    }[];
-    IsTruncated: boolean;
-    Delimiter ?: string;
-    NextMarker ?: string;
-    NextContinuationToken ?: string;
-};
+/**
+ * Find the common prefix in the path
+ *
+ * @param {String} key            - path of the object
+ * @param {String} delimiter      - separator
+ * @param {Number} delimiterIndex - 'folder' index in the path
+ * @return {String}               - CommonPrefix
+ */
+function getCommonPrefix(
+    key: string,
+    delimiter: string,
+    delimiterIndex: number
+): string {
+    return key.substring(0, delimiterIndex + delimiter.length);
+}
 
 /**
  * Handle object listing with parameters
@@ -57,9 +38,23 @@ export type ResultObject = {
  * @prop {Number} maxKeys              - number of keys to list
  */
 export class Delimiter extends Extension {
-
-    state: FilterState;
-    keyHandlers: { [id: number]: KeyHandler };
+    CommonPrefixes: string[];
+    Contents: string[];
+    IsTruncated: boolean;
+    NextMarker?: string;
+    keys: number;
+    delimiter?: string;
+    prefix?: string;
+    maxKeys: number;
+    marker;
+    startAfter;
+    continuationToken;
+    alphabeticalOrder;
+    vFormat;
+    NextContinuationToken;
+    startMarker;
+    continueMarker;
+    nextContinueMarker;
 
     /**
      * Create a new Delimiter instance
@@ -78,6 +73,9 @@ export class Delimiter extends Extension {
      *                                                   format
      * @param {String}  [parameters.continuationToken] - obfuscated amazon
      *                                                   token
+     * @param {Boolean} [parameters.alphabeticalOrder] - Either the result is
+     *                                                   alphabetically ordered
+     *                                                   or not
      * @param {RequestLogger} logger                   - The logger of the
      *                                                   request
      * @param {String} [vFormat]                       - versioning key format
@@ -85,79 +83,78 @@ export class Delimiter extends Extension {
     constructor(parameters, logger, vFormat) {
         super(parameters, logger);
         // original listing parameters
+        this.keys = 0;
         this.delimiter = parameters.delimiter;
         this.prefix = parameters.prefix;
+        this.marker = parameters.marker;
         this.maxKeys = parameters.maxKeys || 1000;
-
-        if (parameters.v2) {
-            this.marker = parameters.continuationToken || parameters.startAfter;
-        } else {
-            this.marker = parameters.marker;
-        }
-        this.nextMarker = this.marker;
+        this.startAfter = parameters.startAfter;
+        this.continuationToken = parameters.continuationToken;
+        this.alphabeticalOrder =
+            typeof parameters.alphabeticalOrder !== 'undefined'
+                ? parameters.alphabeticalOrder
+                : true;
 
         this.vFormat = vFormat || BucketVersioningKeyFormat.v0;
         // results
         this.CommonPrefixes = [];
         this.Contents = [];
         this.IsTruncated = false;
-        this.keyHandlers = {};
+        this.NextMarker = parameters.marker;
+        this.NextContinuationToken =
+            parameters.continuationToken || parameters.startAfter;
 
-        Object.assign(this, {
-            [BucketVersioningKeyFormat.v0]: {
-                genMDParams: this.genMDParamsV0,
-                getObjectKey: this.getObjectKeyV0,
-                skipping: this.skippingV0,
-            },
-            [BucketVersioningKeyFormat.v1]: {
-                genMDParams: this.genMDParamsV1,
-                getObjectKey: this.getObjectKeyV1,
-                skipping: this.skippingV1,
-            },
-        }[this.vFormat]);
+        this.startMarker = parameters.v2 ? 'startAfter' : 'marker';
+        this.continueMarker = parameters.v2 ? 'continuationToken' : 'marker';
+        this.nextContinueMarker = parameters.v2
+            ? 'NextContinuationToken'
+            : 'NextMarker';
 
-        // if there is a delimiter, we may skip ranges by prefix,
-        // hence using the NotSkippingPrefix flavor that checks the
-        // subprefix up to the delimiter for the NotSkipping state
-        if (this.delimiter) {
-            this.setKeyHandler(
-                DelimiterFilterStateId.NotSkipping,
-                this.keyHandler_NotSkippingPrefix.bind(this));
-        } else {
-            // listing without a delimiter never has to skip over any
-            // prefix -> use NeverSkipping flavor for the NotSkipping
-            // state
-            this.setKeyHandler(
-                DelimiterFilterStateId.NotSkipping,
-                this.keyHandler_NeverSkipping.bind(this));
+        if (
+            this.delimiter !== undefined &&
+            this[this.nextContinueMarker] !== undefined &&
+            this[this.nextContinueMarker].startsWith(this.prefix || '')
+        ) {
+            const nextDelimiterIndex = this[this.nextContinueMarker].indexOf(
+                this.delimiter,
+                this.prefix ? this.prefix.length : 0
+            );
+            this[this.nextContinueMarker] = this[this.nextContinueMarker].slice(
+                0,
+                nextDelimiterIndex + this.delimiter.length
+            );
         }
-        this.setKeyHandler(
-            DelimiterFilterStateId.SkippingPrefix,
-            this.keyHandler_SkippingPrefix.bind(this));
 
-        this.state = <DelimiterFilterState_NotSkipping> {
-            id: DelimiterFilterStateId.NotSkipping,
-        };
+        Object.assign(
+            this,
+            {
+                [BucketVersioningKeyFormat.v0]: {
+                    genMDParams: this.genMDParamsV0,
+                    getObjectKey: this.getObjectKeyV0,
+                    skipping: this.skippingV0,
+                },
+                [BucketVersioningKeyFormat.v1]: {
+                    genMDParams: this.genMDParamsV1,
+                    getObjectKey: this.getObjectKeyV1,
+                    skipping: this.skippingV1,
+                },
+            }[this.vFormat]
+        );
     }
 
     genMDParamsV0() {
-        const params: { gt ?: string, gte ?: string, lt ?: string } = {};
+        const params: { gte?: string; lt?: string; gt?: string } = {};
         if (this.prefix) {
             params.gte = this.prefix;
             params.lt = inc(this.prefix);
         }
-        if (this.marker && this.delimiter) {
-            const commonPrefix = this.getCommonPrefix(this.marker);
-            if (commonPrefix) {
-                const afterPrefix = inc(commonPrefix);
-                if (!params.gte || afterPrefix > params.gte) {
-                    params.gte = afterPrefix;
-                }
+        const startVal = this[this.continueMarker] || this[this.startMarker];
+        if (startVal) {
+            if (params.gte && params.gte > startVal) {
+                return params;
             }
-        }
-        if (this.marker && (!params.gte || this.marker >= params.gte)) {
             delete params.gte;
-            params.gt = this.marker;
+            params.gt = startVal;
         }
         return params;
     }
@@ -189,53 +186,21 @@ export class Delimiter extends Extension {
      *  @param {String} value - The value of the key
      *  @return {number}      - indicates if iteration should continue
      */
-    addContents(key: string, value: string): void {
+    addContents(key: string, value: string): number {
+        if (this._reachedMaxKeys()) {
+            return FILTER_END;
+        }
         this.Contents.push({ key, value: this.trimMetadata(value) });
+        this[this.nextContinueMarker] = key;
         ++this.keys;
-        this.nextMarker = key;
+        return FILTER_ACCEPT;
     }
 
-    getCommonPrefix(key: string): string | undefined {
-        if (!this.delimiter) {
-            return undefined;
-        }
-        const baseIndex = this.prefix ? this.prefix.length : 0;
-        const delimiterIndex = key.indexOf(this.delimiter, baseIndex);
-        if (delimiterIndex === -1) {
-            return undefined;
-        }
-        return key.substring(0, delimiterIndex + this.delimiter.length);
-    }
-
-    /**
-     * Add a Common Prefix in the list
-     * @param {String} commonPrefix   - common prefix to add
-     * @param {String} key            - full key starting with commonPrefix
-     * @return {Boolean}     - indicates if iteration should continue
-     */
-    addCommonPrefix(commonPrefix: string, key: string): void {
-        // add the new prefix to the list
-        this.CommonPrefixes.push(commonPrefix);
-        ++this.keys;
-        this.nextMarker = commonPrefix;
-    }
-
-    addCommonPrefixOrContents(key: string, value: string): string | undefined {
-        // add the subprefix to the common prefixes if the key has the delimiter
-        const commonPrefix = this.getCommonPrefix(key);
-        if (commonPrefix) {
-            this.addCommonPrefix(commonPrefix, key);
-            return commonPrefix;
-        }
-        this.addContents(key, value);
-        return undefined;
-    }
-
-    getObjectKeyV0(obj: { key: string }): string {
+    getObjectKeyV0(obj: { key: string }) {
         return obj.key;
     }
 
-    getObjectKeyV1(obj: { key: string }): string {
+    getObjectKeyV1(obj: { key: string }) {
         return obj.key.slice(DbPrefixes.Master.length);
     }
 
@@ -250,81 +215,71 @@ export class Delimiter extends Extension {
      *  @param {String} obj.value - The value of the element
      *  @return {number}          - indicates if iteration should continue
      */
-    filter(obj: { key: string, value: string }): FilterReturnValue {
+    filter(obj: { key: string; value: string }): number {
         const key = this.getObjectKey(obj);
         const value = obj.value;
-
-        return this.handleKey(key, value);
-    }
-
-    setState(state: FilterState): void {
-        this.state = state;
-    }
-
-    setKeyHandler(stateId: number, keyHandler: KeyHandler): void {
-        this.keyHandlers[stateId] = keyHandler;
-    }
-
-    handleKey(key: string, value: string): FilterReturnValue {
-        return this.keyHandlers[this.state.id](key, value);
-    }
-
-    keyHandler_NeverSkipping(key: string, value: string): FilterReturnValue {
-        if (this._reachedMaxKeys()) {
-            return FILTER_END;
-        }
-        this.addContents(key, value);
-        return FILTER_ACCEPT;
-    }
-
-    keyHandler_NotSkippingPrefix(key: string, value: string): FilterReturnValue {
-        if (this._reachedMaxKeys()) {
-            return FILTER_END;
-        }
-        const commonPrefix = this.addCommonPrefixOrContents(key, value);
-        if (commonPrefix) {
-            // transition into SkippingPrefix state to skip all following keys
-            // while they start with the same prefix
-            this.setState(<DelimiterFilterState_SkippingPrefix> {
-                id: DelimiterFilterStateId.SkippingPrefix,
-                prefix: commonPrefix,
-            });
-        }
-        return FILTER_ACCEPT;
-    }
-
-    keyHandler_SkippingPrefix(key: string, value: string): FilterReturnValue {
-        const { prefix } = <DelimiterFilterState_SkippingPrefix> this.state;
-        if (key.startsWith(prefix)) {
+        if (
+            (this.prefix && !key.startsWith(this.prefix)) ||
+            (this.alphabeticalOrder &&
+                typeof this[this.nextContinueMarker] === 'string' &&
+                key <= this[this.nextContinueMarker])
+        ) {
             return FILTER_SKIP;
         }
-        this.setState(<DelimiterFilterState_NotSkipping> {
-            id: DelimiterFilterStateId.NotSkipping,
-        });
-        return this.handleKey(key, value);
-    }
-
-    skippingBase(): string | undefined {
-        switch (this.state.id) {
-        case DelimiterFilterStateId.SkippingPrefix:
-            const { prefix } = <DelimiterFilterState_SkippingPrefix> this.state;
-            return inc(prefix);
-
-        default:
-            return SKIP_NONE;
+        if (this.delimiter) {
+            const baseIndex = this.prefix ? this.prefix.length : 0;
+            const delimiterIndex = key.indexOf(this.delimiter, baseIndex);
+            if (delimiterIndex === -1) {
+                return this.addContents(key, value);
+            }
+            return this.addCommonPrefix(key, delimiterIndex);
         }
+        return this.addContents(key, value);
     }
 
-    skippingV0() {
-        return this.skippingBase();
-    }
-
-    skippingV1() {
-        const skipTo = this.skippingBase();
-        if (skipTo === SKIP_NONE) {
-            return SKIP_NONE;
+    /**
+     * Add a Common Prefix in the list
+     * @param {String} key   - object name
+     * @param {Number} index - after prefix starting point
+     * @return {Boolean}     - indicates if iteration should continue
+     */
+    addCommonPrefix(key: string, index: number): boolean {
+        const commonPrefix = getCommonPrefix(key, this.delimiter, index);
+        if (
+            this.CommonPrefixes.indexOf(commonPrefix) === -1 &&
+            this[this.nextContinueMarker] !== commonPrefix
+        ) {
+            if (this._reachedMaxKeys()) {
+                return FILTER_END;
+            }
+            this.CommonPrefixes.push(commonPrefix);
+            this[this.nextContinueMarker] = commonPrefix;
+            ++this.keys;
+            return FILTER_ACCEPT;
         }
-        return DbPrefixes.Master + skipTo;
+        return FILTER_SKIP;
+    }
+
+    /**
+     * If repd happens to want to skip listing on a bucket in v0
+     * versioning key format, here is an idea.
+     *
+     * @return {string} - the present range (NextMarker) if repd believes
+     *                    that it's enough and should move on
+     */
+    skippingV0(): string {
+        return this[this.nextContinueMarker];
+    }
+
+    /**
+     * If repd happens to want to skip listing on a bucket in v1
+     * versioning key format, here is an idea.
+     *
+     * @return {string} - the present range (NextMarker) if repd believes
+     *                    that it's enough and should move on
+     */
+    skippingV1(): string {
+        return DbPrefixes.Master + this[this.nextContinueMarker];
     }
 
     /**
@@ -333,23 +288,28 @@ export class Delimiter extends Extension {
      *  isn't truncated
      *  @return {Object} - following amazon format
      */
-    result(): ResultObject {
+    result() {
         /* NextMarker is only provided when delimiter is used.
          * specified in v1 listing documentation
          * http://docs.aws.amazon.com/AmazonS3/latest/API/RESTBucketGET.html
          */
-        const result: ResultObject = {
+        const result = {
             CommonPrefixes: this.CommonPrefixes,
             Contents: this.Contents,
             IsTruncated: this.IsTruncated,
             Delimiter: this.delimiter,
         };
         if (this.parameters.v2) {
+            //
             result.NextContinuationToken = this.IsTruncated
-                ? this.nextMarker : undefined;
+                ? this.NextContinuationToken
+                : undefined;
         } else {
-            result.NextMarker = (this.IsTruncated && this.delimiter)
-                ? this.nextMarker : undefined;
+            //
+            result.NextMarker =
+                this.IsTruncated && this.delimiter
+                    ? this.NextMarker
+                    : undefined;
         }
         return result;
     }

lib/algos/list/delimiterCurrent.ts

@@ -1,127 +0,0 @@
-const { DelimiterMaster } = require('./delimiterMaster');
-const { FILTER_ACCEPT, FILTER_END } = require('./tools');
-
-type ResultObject = {
-    Contents: {
-        key: string;
-        value: string;
-    }[];
-    IsTruncated: boolean;
-    NextMarker ?: string;
-};
-
-/**
- * Handle object listing with parameters. This extends the base class DelimiterMaster
- * to return the master/current versions.
- */
-class DelimiterCurrent extends DelimiterMaster {
-    /**
-     * Delimiter listing of current versions.
-     * @param {Object}  parameters            - listing parameters
-     * @param {String}  parameters.beforeDate - limit the response to keys older than beforeDate
-     * @param {String}  parameters.excludedDataStoreName - excluded datatore name
-     * @param {Number} parameters.maxScannedLifecycleListingEntries - max number of entries to be scanned
-     * @param {RequestLogger} logger          - The logger of the request
-     * @param {String} [vFormat]              - versioning key format
-     */
-    constructor(parameters, logger, vFormat) {
-        super(parameters, logger, vFormat);
-
-        this.beforeDate = parameters.beforeDate;
-        this.excludedDataStoreName = parameters.excludedDataStoreName;
-        this.maxScannedLifecycleListingEntries = parameters.maxScannedLifecycleListingEntries;
-        this.scannedKeys = 0;
-    }
-
-    genMDParamsV0() {
-        const params = super.genMDParamsV0();
-        // lastModified and dataStoreName parameters are used by metadata that enables built-in filtering, 
-        // a feature currently exclusive to MongoDB
-        if (this.beforeDate) {
-            params.lastModified = {
-                lt: this.beforeDate,
-            };
-        }
-
-        if (this.excludedDataStoreName) {
-            params.dataStoreName = {
-                ne: this.excludedDataStoreName,
-            }
-        }
-
-        return params;
-    }
-
-    /**
-     * Parses the stringified entry's value.
-     * @param s - sringified value
-     * @return - undefined if parsing fails, otherwise it contains the parsed value.
-     */
-    _parse(s) {
-        let p;
-        try {
-            p = JSON.parse(s);
-        } catch (e: any) {
-            this.logger.warn(
-                'Could not parse Object Metadata while listing',
-                { err: e.toString() });
-        }
-        return p;
-    }
-
-    /**
-     * check if the max keys count has been reached and set the
-     * final state of the result if it is the case
-     *
-     * specialized implementation on DelimiterCurrent to also check
-     * the number of scanned keys
-     *
-     * @return {Boolean} - indicates if the iteration has to stop
-     */
-    _reachedMaxKeys(): boolean {
-        if (this.maxScannedLifecycleListingEntries && this.scannedKeys >= this.maxScannedLifecycleListingEntries) {
-            this.IsTruncated = true;
-            this.logger.info('listing stopped due to reaching the maximum scanned entries limit',
-                {
-                    maxScannedLifecycleListingEntries: this.maxScannedLifecycleListingEntries,
-                    scannedKeys: this.scannedKeys,
-                });
-            return true;
-        }
-        return super._reachedMaxKeys();
-    }
-
-    addContents(key, value) {
-        ++this.scannedKeys;
-        const parsedValue = this._parse(value);
-        // if parsing fails, skip the key.
-        if (parsedValue) {
-            const lastModified = parsedValue['last-modified'];
-            const dataStoreName = parsedValue.dataStoreName;
-            // We then check if the current version is older than the "beforeDate" and
-            // "excludedDataStoreName" is not specified or if specified and the data store name is different.
-            if ((!this.beforeDate || (lastModified && lastModified < this.beforeDate)) &&
-                (!this.excludedDataStoreName || dataStoreName !== this.excludedDataStoreName)) {
-                super.addContents(key, value);
-            }
-            // In the event of a timeout occurring before any content is added,
-            // NextMarker is updated even if the object is not eligible.
-            // It minimizes the amount of data that the client needs to re-process if the request times out.
-            this.nextMarker = key;
-        }
-    }
-
-    result(): object {
-        const result: ResultObject = {
-            Contents: this.Contents,
-            IsTruncated: this.IsTruncated,
-        };
-
-        if (this.IsTruncated) {
-            result.NextMarker = this.nextMarker;
-        }
-
-        return result;
-    }
-}
-module.exports = { DelimiterCurrent };

lib/algos/list/delimiterMaster.ts

@@ -1,620 +1,205 @@
-import {
-    Delimiter,
-    FilterState,
-    FilterReturnValue,
-    DelimiterFilterStateId,
-    DelimiterFilterState_NotSkipping,
-    DelimiterFilterState_SkippingPrefix,
-    ResultObject,
-} from './delimiter';
-const Version = require('../../versioning/Version').Version;
-const VSConst = require('../../versioning/constants').VersioningConstants;
+import { Delimiter } from './delimiter';
+import { Version } from '../../versioning/Version';
+import { VersioningConstants as VSConst } from '../../versioning/constants';
 const { BucketVersioningKeyFormat } = VSConst;
-const { FILTER_ACCEPT, FILTER_SKIP, FILTER_END, SKIP_NONE, inc } = require('./tools');
-
-import { GapSetEntry } from '../cache/GapSet';
-import { GapCacheInterface } from '../cache/GapCache';
+import { FILTER_ACCEPT, FILTER_SKIP, SKIP_NONE } from './tools';
 
 const VID_SEP = VSConst.VersionId.Separator;
 const { DbPrefixes } = VSConst;
 
-export const enum DelimiterMasterFilterStateId {
-    SkippingVersionsV0 = 101,
-    WaitVersionAfterPHDV0 = 102,
-    SkippingGapV0 = 103,
-};
-
-interface DelimiterMasterFilterState_SkippingVersionsV0 extends FilterState {
-    id: DelimiterMasterFilterStateId.SkippingVersionsV0,
-    masterKey: string,
-};
-
-interface DelimiterMasterFilterState_WaitVersionAfterPHDV0 extends FilterState {
-    id: DelimiterMasterFilterStateId.WaitVersionAfterPHDV0,
-    masterKey: string,
-};
-
-interface DelimiterMasterFilterState_SkippingGapV0 extends FilterState {
-    id: DelimiterMasterFilterStateId.SkippingGapV0,
-};
-
-export const enum GapCachingState {
-    NoGapCache = 0, // there is no gap cache
-    UnknownGap = 1, // waiting for a cache lookup
-    GapLookupInProgress = 2, // asynchronous gap lookup in progress
-    GapCached = 3, // an upcoming or already skippable gap is cached
-    NoMoreGap = 4, // the cache doesn't have any more gaps inside the listed range
-};
-
-type GapCachingInfo_NoGapCache = {
-    state: GapCachingState.NoGapCache;
-};
-
-type GapCachingInfo_NoCachedGap = {
-    state: GapCachingState.UnknownGap
-        | GapCachingState.GapLookupInProgress
-    gapCache: GapCacheInterface;
-};
-
-type GapCachingInfo_GapCached = {
-    state: GapCachingState.GapCached;
-    gapCache: GapCacheInterface;
-    gapCached: GapSetEntry;
-};
-
-type GapCachingInfo_NoMoreGap = {
-    state: GapCachingState.NoMoreGap;
-};
-
-type GapCachingInfo = GapCachingInfo_NoGapCache
-    | GapCachingInfo_NoCachedGap
-    | GapCachingInfo_GapCached
-    | GapCachingInfo_NoMoreGap;
-
-
-export const enum GapBuildingState {
-    Disabled = 0, // no gap cache or no gap building needed (e.g. in V1 versioning format)
-    NotBuilding = 1, // not currently building a gap (i.e. not listing within a gap)
-    Building = 2, // currently building a gap (i.e. listing within a gap)
-    Expired = 3, // not allowed to build due to exposure delay timeout
-};
-
-type GapBuildingInfo_NothingToBuild = {
-    state: GapBuildingState.Disabled | GapBuildingState.Expired;
-};
-
-type GapBuildingParams = {
-    /**
-     * minimum weight for a gap to be created in the cache
-     */
-    minGapWeight: number;
-    /**
-     * trigger a cache setGap() call every N skippable keys
-     */
-    triggerSaveGapWeight: number;
-    /**
-     * timestamp to assess whether we're still inside the validity period to
-     * be allowed to build gaps
-     */
-    initTimestamp: number;
-};
-
-type GapBuildingInfo_NotBuilding = {
-    state: GapBuildingState.NotBuilding;
-    gapCache: GapCacheInterface;
-    params: GapBuildingParams;
-};
-
-type GapBuildingInfo_Building = {
-    state: GapBuildingState.Building;
-    gapCache: GapCacheInterface;
-    params: GapBuildingParams;
-    /**
-     * Gap currently being created
-     */
-    gap: GapSetEntry;
-    /**
-     * total current weight of the gap being created
-     */
-    gapWeight: number;
-};
-
-type GapBuildingInfo = GapBuildingInfo_NothingToBuild
-    | GapBuildingInfo_NotBuilding
-    | GapBuildingInfo_Building;
-
 /**
  * Handle object listing with parameters. This extends the base class Delimiter
  * to return the raw master versions of existing objects.
  */
 export class DelimiterMaster extends Delimiter {
-
-    _gapCaching: GapCachingInfo;
-    _gapBuilding: GapBuildingInfo;
-    _refreshedBuildingParams: GapBuildingParams | null;
+    prvKey;
+    prvPHDKey;
+    inReplayPrefix;
 
     /**
      * Delimiter listing of master versions.
      * @param {Object}  parameters            - listing parameters
-     * @param {String}  [parameters.delimiter]  - delimiter per amazon format
-     * @param {String}  [parameters.prefix]     - prefix per amazon format
-     * @param {String}  [parameters.marker]     - marker per amazon format
-     * @param {Number}  [parameters.maxKeys]    - number of keys to list
-     * @param {Boolean} [parameters.v2]         - indicates whether v2 format
-     * @param {String}  [parameters.startAfter] - marker per amazon v2 format
-     * @param {String}  [parameters.continuationToken] - obfuscated amazon token
-     * @param {RequestLogger} logger            - The logger of the request
-     * @param {String}  [vFormat="v0"]          - versioning key format
+     * @param {String}  parameters.delimiter  - delimiter per amazon format
+     * @param {String}  parameters.prefix     - prefix per amazon format
+     * @param {String}  parameters.marker     - marker per amazon format
+     * @param {Number}  parameters.maxKeys    - number of keys to list
+     * @param {Boolean} parameters.v2         - indicates whether v2 format
+     * @param {String}  parameters.startAfter - marker per amazon v2 format
+     * @param {String}  parameters.continuationToken - obfuscated amazon token
+     * @param {RequestLogger} logger          - The logger of the request
+     * @param {String} [vFormat]              - versioning key format
      */
-    constructor(parameters, logger, vFormat?: string) {
+    constructor(parameters, logger, vFormat) {
         super(parameters, logger, vFormat);
+        // non-PHD master version or a version whose master is a PHD version
+        this.prvKey = undefined;
+        this.prvPHDKey = undefined;
+        this.inReplayPrefix = false;
 
-        if (this.vFormat === BucketVersioningKeyFormat.v0) {
-            // override Delimiter's implementation of NotSkipping for
-            // DelimiterMaster logic (skipping versions and special
-            // handling of delete markers and PHDs)
-            this.setKeyHandler(
-                DelimiterFilterStateId.NotSkipping,
-                this.keyHandler_NotSkippingPrefixNorVersionsV0.bind(this));
-
-            // add extra state handlers specific to DelimiterMaster with v0 format
-            this.setKeyHandler(
-                DelimiterMasterFilterStateId.SkippingVersionsV0,
-                this.keyHandler_SkippingVersionsV0.bind(this));
-
-            this.setKeyHandler(
-                DelimiterMasterFilterStateId.WaitVersionAfterPHDV0,
-                this.keyHandler_WaitVersionAfterPHDV0.bind(this));
-
-            this.setKeyHandler(
-                DelimiterMasterFilterStateId.SkippingGapV0,
-                this.keyHandler_SkippingGapV0.bind(this));
-
-            if (this.marker) {
-                // distinct initial state to include some special logic
-                // before the first master key is found that does not have
-                // to be checked afterwards
-                this.state = <DelimiterMasterFilterState_SkippingVersionsV0> {
-                    id: DelimiterMasterFilterStateId.SkippingVersionsV0,
-                    masterKey: this.marker,
-                };
-            } else {
-                this.state = <DelimiterFilterState_NotSkipping> {
-                    id: DelimiterFilterStateId.NotSkipping,
-                };
-            }
-        } else {
-            // save base implementation of the `NotSkipping` state in
-            // Delimiter before overriding it with ours, to be able to call it from there
-            this.keyHandler_NotSkipping_Delimiter = this.keyHandlers[DelimiterFilterStateId.NotSkipping];
-            this.setKeyHandler(
-                DelimiterFilterStateId.NotSkipping,
-                this.keyHandler_NotSkippingPrefixNorVersionsV1.bind(this));
-        }
-        // in v1, we can directly use Delimiter's implementation,
-        // which is already set to the proper state
-
-        // default initialization of the gap cache and building states, can be
-        // set by refreshGapCache()
-        this._gapCaching = {
-            state: GapCachingState.NoGapCache,
-        };
-        this._gapBuilding = {
-            state: GapBuildingState.Disabled,
-        };
-        this._refreshedBuildingParams = null;
+        Object.assign(
+            this,
+            {
+                [BucketVersioningKeyFormat.v0]: {
+                    filter: this.filterV0,
+                    skipping: this.skippingV0,
+                },
+                [BucketVersioningKeyFormat.v1]: {
+                    filter: this.filterV1,
+                    skipping: this.skippingV1,
+                },
+            }[this.vFormat]
+        );
     }
 
     /**
-     * Get the validity period left before a refresh of the gap cache is needed
-     * to continue building new gaps.
-     *
-     * @return {number|null} one of:
-     * - the remaining time in milliseconds in which gaps can be added to the
-     *   cache before a call to refreshGapCache() is required
-     * - or 0 if there is no time left and a call to refreshGapCache() is required
-     *   to resume caching gaps
-     * - or null if refreshing the cache is never needed (because the gap cache
-     *   is either not available or not used)
+     *  Filter to apply on each iteration for buckets in v0 format,
+     *  based on:
+     *  - prefix
+     *  - delimiter
+     *  - maxKeys
+     *  The marker is being handled directly by levelDB
+     *  @param {Object} obj       - The key and value of the element
+     *  @param {String} obj.key   - The key of the element
+     *  @param {String} obj.value - The value of the element
+     *  @return {number}          - indicates if iteration should continue
      */
-    getGapBuildingValidityPeriodMs(): number | null {
-        let gapBuilding;
-        switch (this._gapBuilding.state) {
-        case GapBuildingState.Disabled:
-            return null;
-        case GapBuildingState.Expired:
-            return 0;
-        case GapBuildingState.NotBuilding:
-            gapBuilding = <GapBuildingInfo_NotBuilding> this._gapBuilding;
-            break;
-        case GapBuildingState.Building:
-            gapBuilding = <GapBuildingInfo_Building> this._gapBuilding;
-            break;
-        }
-        const { gapCache, params } = gapBuilding;
-        const elapsedTime = Date.now() - params.initTimestamp;
-        return Math.max(gapCache.exposureDelayMs - elapsedTime, 0);
-    }
-
-    /**
-     * Refresh the gaps caching logic (gaps are series of current delete markers
-     * in V0 bucket metadata format). It has two effects:
-     *
-     * - starts exposing existing and future gaps from the cache to efficiently
-     *   skip over series of current delete markers that have been seen and cached
-     *   earlier
-     *
-     * - enables building and caching new gaps (or extend existing ones), for a
-     *   limited time period defined by the `gapCacheProxy.exposureDelayMs` value
-     *   in milliseconds. To refresh the validity period and resume building and
-     *   caching new gaps, one must restart a new listing from the database (starting
-     *   at the current listing key, included), then call refreshGapCache() again.
-     *
-     * @param {GapCacheInterface} gapCacheProxy - API proxy to the gaps cache
-     *   (the proxy should handle prefixing object keys with the bucket name)
-     * @param {number} [minGapWeight=100] - minimum weight of a gap for it to be
-     *   added in the cache
-     * @param {number} [triggerSaveGapWeight] - cumulative weight to wait for
-     *   before saving the current building gap. Cannot be greater than
-     *   `gapCacheProxy.maxGapWeight` (the value is thresholded to `maxGapWeight`
-     *   otherwise). Defaults to `gapCacheProxy.maxGapWeight / 2`.
-     * @return {undefined}
-     */
-    refreshGapCache(
-        gapCacheProxy: GapCacheInterface,
-        minGapWeight?: number,
-        triggerSaveGapWeight?: number
-    ): void {
-        if (this.vFormat !== BucketVersioningKeyFormat.v0) {
-            return;
-        }
-        if (this._gapCaching.state === GapCachingState.NoGapCache) {
-            this._gapCaching = {
-                state: GapCachingState.UnknownGap,
-                gapCache: gapCacheProxy,
-            };
-        }
-        const refreshedBuildingParams: GapBuildingParams = {
-            minGapWeight: minGapWeight || 100,
-            triggerSaveGapWeight: triggerSaveGapWeight
-                || Math.trunc(gapCacheProxy.maxGapWeight / 2),
-            initTimestamp: Date.now(),
-        };
-        if (this._gapBuilding.state === GapBuildingState.Building) {
-            // refreshed params will be applied as soon as the current building gap is saved
-            this._refreshedBuildingParams = refreshedBuildingParams;
-        } else {
-            this._gapBuilding = {
-                state: GapBuildingState.NotBuilding,
-                gapCache: gapCacheProxy,
-                params: refreshedBuildingParams,
-            };
-        }
-    }
-
-    /**
-     * Trigger a lookup of the closest upcoming or already skippable gap.
-     *
-     * @param {string} fromKey - lookup a gap not before 'fromKey'
-     * @return {undefined} - the lookup is asynchronous and its
-     * response is handled inside this function
-     */
-    _triggerGapLookup(gapCaching: GapCachingInfo_NoCachedGap, fromKey: string): void {
-        this._gapCaching = {
-            state: GapCachingState.GapLookupInProgress,
-            gapCache: gapCaching.gapCache,
-        };
-        const maxKey = this.prefix ? inc(this.prefix) : undefined;
-        gapCaching.gapCache.lookupGap(fromKey, maxKey).then(_gap => {
-            const gap = <GapSetEntry | null> _gap;
-            if (gap) {
-                this._gapCaching = {
-                    state: GapCachingState.GapCached,
-                    gapCache: gapCaching.gapCache,
-                    gapCached: gap,
-                };
-            } else {
-                this._gapCaching = {
-                    state: GapCachingState.NoMoreGap,
-                };
-            }
-        });
-    }
-
-    _checkGapOnMasterDeleteMarker(key: string): FilterReturnValue {
-        switch (this._gapBuilding.state) {
-        case GapBuildingState.Disabled:
-        case GapBuildingState.Expired:
-            break;
-        case GapBuildingState.NotBuilding:
-            this._createBuildingGap(key, 1);
-            break;
-        case GapBuildingState.Building:
-            this._updateBuildingGap(key);
-            break;
-        }
-        if (this._gapCaching.state === GapCachingState.GapCached) {
-            const { gapCached } = this._gapCaching;
-            if (key >= gapCached.firstKey) {
-                if (key <= gapCached.lastKey) {
-                    // we are inside the last looked up cached gap: transition to
-                    // 'SkippingGapV0' state
-                    this.setState(<DelimiterMasterFilterState_SkippingGapV0> {
-                        id: DelimiterMasterFilterStateId.SkippingGapV0,
-                    });
-                    // cut the current gap before skipping, it will be merged or
-                    // chained with the existing one (depending on its weight)
-                    if (this._gapBuilding.state === GapBuildingState.Building) {
-                        // substract 1 from the weight because we are going to chain this gap,
-                        // which has an overlap of one key.
-                        this._gapBuilding.gap.weight -= 1;
-                        this._cutBuildingGap();
-                    }
-                    return FILTER_SKIP;
-                }
-                // as we are past the cached gap, we will need another lookup
-                this._gapCaching = {
-                    state: GapCachingState.UnknownGap,
-                    gapCache: this._gapCaching.gapCache,
-                };
-            }
-        }
-        if (this._gapCaching.state === GapCachingState.UnknownGap) {
-            this._triggerGapLookup(this._gapCaching, key);
-        }
-        return FILTER_ACCEPT;
-    }
-
-    filter_onNewMasterKeyV0(key: string, value: string): FilterReturnValue {
-        // if this master key is a delete marker, accept it without
-        // adding the version to the contents
-        if (Version.isDeleteMarker(value)) {
-            // update the state to start skipping versions of the new master key
-            this.setState(<DelimiterMasterFilterState_SkippingVersionsV0> {
-                id: DelimiterMasterFilterStateId.SkippingVersionsV0,
-                masterKey: key,
-            });
-            return this._checkGapOnMasterDeleteMarker(key);
-        }
-        if (Version.isPHD(value)) {
-            // master version is a PHD version: wait for the first
-            // following version that will be considered as the actual
-            // master key
-            this.setState(<DelimiterMasterFilterState_WaitVersionAfterPHDV0> {
-                id: DelimiterMasterFilterStateId.WaitVersionAfterPHDV0,
-                masterKey: key,
-            });
-            return FILTER_ACCEPT;
-        }
-        // cut the current gap as soon as a non-deleted entry is seen
-        this._cutBuildingGap();
+    filterV0(obj: { key: string; value: string }): number {
+        let key = obj.key;
+        const value = obj.value;
 
         if (key.startsWith(DbPrefixes.Replay)) {
-            // skip internal replay prefix entirely
-            this.setState(<DelimiterFilterState_SkippingPrefix> {
-                id: DelimiterFilterStateId.SkippingPrefix,
-                prefix: DbPrefixes.Replay,
-            });
+            this.inReplayPrefix = true;
             return FILTER_SKIP;
         }
-        if (this._reachedMaxKeys()) {
-            return FILTER_END;
+        this.inReplayPrefix = false;
+
+        /* Skip keys not starting with the prefix or not alphabetically
+         * ordered. */
+        if (
+            (this.prefix && !key.startsWith(this.prefix)) ||
+            (typeof this[this.nextContinueMarker] === 'string' &&
+                key <= this[this.nextContinueMarker])
+        ) {
+            return FILTER_SKIP;
         }
 
-        const commonPrefix = this.addCommonPrefixOrContents(key, value);
-        if (commonPrefix) {
-            // transition into SkippingPrefix state to skip all following keys
-            // while they start with the same prefix
-            this.setState(<DelimiterFilterState_SkippingPrefix> {
-                id: DelimiterFilterStateId.SkippingPrefix,
-                prefix: commonPrefix,
-            });
+        /* Skip version keys (<key><versionIdSeparator><version>) if we already
+         * have a master version. */
+        const versionIdIndex = key.indexOf(VID_SEP);
+        if (versionIdIndex >= 0) {
+            key = key.slice(0, versionIdIndex);
+            /* - key === this.prvKey is triggered when a master version has
+             *   been accepted for this key,
+             * - key === this.NextMarker or this.NextContinueToken is triggered
+             *   when a listing page ends on an accepted obj and the next page
+             *   starts with a version of this object.
+             *   In that case prvKey is default set to undefined
+             *   in the constructor and comparing to NextMarker is the only
+             *   way to know  we should not accept this version. This test is
+             *   not redundant with the one at the beginning of this function,
+             *   we are comparing here the key without the version suffix,
+             * - key startsWith the previous NextMarker happens because we set
+             *   NextMarker to the common prefix instead of the whole key
+             *   value. (TODO: remove this test once ZENKO-1048 is fixed)
+             *   */
+            if (
+                key === this.prvKey ||
+                key === this[this.nextContinueMarker] ||
+                (this.delimiter &&
+                    key.startsWith(this[this.nextContinueMarker]))
+            ) {
+                /* master version already filtered */
+                return FILTER_SKIP;
+            }
+        }
+        if (Version.isPHD(value)) {
+            /* master version is a PHD version, we want to wait for the next
+             * one:
+             * - Set the prvKey to undefined to not skip the next version,
+             * - return accept to avoid users to skip the next values in range
+             *   (skip scan mechanism in metadata backend like Metadata or
+             *   MongoClient). */
+            this.prvKey = undefined;
+            this.prvPHDKey = key;
             return FILTER_ACCEPT;
         }
-        // update the state to start skipping versions of the new master key
-        this.setState(<DelimiterMasterFilterState_SkippingVersionsV0> {
-            id: DelimiterMasterFilterStateId.SkippingVersionsV0,
-            masterKey: key,
-        });
-        return FILTER_ACCEPT;
-    }
-
-    keyHandler_NotSkippingPrefixNorVersionsV0(key: string, value: string): FilterReturnValue {
-        return this.filter_onNewMasterKeyV0(key, value);
-    }
-
-    filter_onNewMasterKeyV1(key: string, value: string): FilterReturnValue {
-        // if this master key is a delete marker, accept it without
-        // adding the version to the contents
         if (Version.isDeleteMarker(value)) {
-            return FILTER_ACCEPT;
-        }
-        // use base Delimiter's implementation
-        return this.keyHandler_NotSkipping_Delimiter(key, value);
-    }
-
-    keyHandler_NotSkippingPrefixNorVersionsV1(key: string, value: string): FilterReturnValue {
-        return this.filter_onNewMasterKeyV1(key, value);
-    }
-
-    keyHandler_SkippingVersionsV0(key: string, value: string): FilterReturnValue {
-        /* In the SkippingVersionsV0 state, skip all version keys
-         * (<key><versionIdSeparator><version>) */
-        const versionIdIndex = key.indexOf(VID_SEP);
-        if (versionIdIndex !== -1) {
-            // version keys count in the building gap weight because they must
-            // also be listed until skipped
-            if (this._gapBuilding.state === GapBuildingState.Building) {
-                this._updateBuildingGap(key);
+            /* This entry is a deleteMarker which has not been filtered by the
+             * version test. Either :
+             * - it is a deleteMarker on the master version, we want to SKIP
+             *   all the following entries with this key (no master version),
+             * - or a deleteMarker following a PHD (setting prvKey to undefined
+             *   when an entry is a PHD avoids the skip on version for the
+             *   next entry). In that case we expect the master version to
+             *   follow. */
+            if (key === this.prvPHDKey) {
+                this.prvKey = undefined;
+                return FILTER_ACCEPT;
             }
+            this.prvKey = key;
             return FILTER_SKIP;
         }
-        return this.filter_onNewMasterKeyV0(key, value);
-    }
 
-    keyHandler_WaitVersionAfterPHDV0(key: string, value: string): FilterReturnValue {
-        // After a PHD key is encountered, the next version key of the
-        // same object if it exists is the new master key, hence
-        // consider it as such and call 'onNewMasterKeyV0' (the test
-        // 'masterKey == phdKey' is probably redundant when we already
-        // know we have a versioned key, since all objects in v0 have
-        // a master key, but keeping it in doubt)
-        const { masterKey: phdKey } = <DelimiterMasterFilterState_WaitVersionAfterPHDV0> this.state;
-        const versionIdIndex = key.indexOf(VID_SEP);
-        if (versionIdIndex !== -1) {
-            const masterKey = key.slice(0, versionIdIndex);
-            if (masterKey === phdKey) {
-                return this.filter_onNewMasterKeyV0(masterKey, value);
+        this.prvKey = key;
+        if (this.delimiter) {
+            // check if the key has the delimiter
+            const baseIndex = this.prefix ? this.prefix.length : 0;
+            const delimiterIndex = key.indexOf(this.delimiter, baseIndex);
+            if (delimiterIndex >= 0) {
+                // try to add the prefix to the list
+                return this.addCommonPrefix(key, delimiterIndex);
             }
         }
-        return this.filter_onNewMasterKeyV0(key, value);
-    }
-
-    keyHandler_SkippingGapV0(key: string, value: string): FilterReturnValue {
-        const { gapCache, gapCached } = <GapCachingInfo_GapCached> this._gapCaching;
-        if (key <= gapCached.lastKey) {
-            return FILTER_SKIP;
-        }
-        this._gapCaching = {
-            state: GapCachingState.UnknownGap,
-            gapCache,
-        };
-        this.setState(<DelimiterMasterFilterState_SkippingVersionsV0> {
-            id: DelimiterMasterFilterStateId.SkippingVersionsV0,
-        });
-        // Start a gap with weight=0 from the latest skippable key. This will
-        // allow to extend the gap just skipped with a chained gap in case
-        // other delete markers are seen after the existing gap is skipped.
-        this._createBuildingGap(gapCached.lastKey, 0, gapCached.weight);
-
-        return this.handleKey(key, value);
-    }
-
-    skippingBase(): string | undefined {
-        switch (this.state.id) {
-        case DelimiterMasterFilterStateId.SkippingVersionsV0:
-            const { masterKey } = <DelimiterMasterFilterState_SkippingVersionsV0> this.state;
-            return masterKey + inc(VID_SEP);
-
-        case DelimiterMasterFilterStateId.SkippingGapV0:
-            const { gapCached } = <GapCachingInfo_GapCached> this._gapCaching;
-            return gapCached.lastKey;
-
-        default:
-            return super.skippingBase();
-        }
-    }
-
-    result(): ResultObject {
-        this._cutBuildingGap();
-        return super.result();
-    }
-
-    _checkRefreshedBuildingParams(params: GapBuildingParams): GapBuildingParams {
-        if (this._refreshedBuildingParams) {
-            const newParams = this._refreshedBuildingParams;
-            this._refreshedBuildingParams = null;
-            return newParams;
-        }
-        return params;
+        return this.addContents(key, value);
     }
 
     /**
-     * Save the gap being built if allowed (i.e. still within the
-     * allocated exposure time window).
-     *
-     * @return {boolean} - true if the gap was saved, false if we are
-     * outside the allocated exposure time window.
+     *  Filter to apply on each iteration for buckets in v1 format,
+     *  based on:
+     *  - prefix
+     *  - delimiter
+     *  - maxKeys
+     *  The marker is being handled directly by levelDB
+     *  @param {Object} obj       - The key and value of the element
+     *  @param {String} obj.key   - The key of the element
+     *  @param {String} obj.value - The value of the element
+     *  @return {number}          - indicates if iteration should continue
      */
-    _saveBuildingGap(): boolean {
-        const { gapCache, params, gap, gapWeight } =
-              <GapBuildingInfo_Building> this._gapBuilding;
-        const totalElapsed = Date.now() - params.initTimestamp;
-        if (totalElapsed >= gapCache.exposureDelayMs) {
-            this._gapBuilding = {
-                state: GapBuildingState.Expired,
-            };
-            this._refreshedBuildingParams = null;
-            return false;
-        }
-        const { firstKey, lastKey, weight } = gap;
-        gapCache.setGap(firstKey, lastKey, weight);
-        this._gapBuilding = {
-            state: GapBuildingState.Building,
-            gapCache,
-            params: this._checkRefreshedBuildingParams(params),
-            gap: {
-                firstKey: gap.lastKey,
-                lastKey: gap.lastKey,
-                weight: 0,
-            },
-            gapWeight,
-        };
-        return true;
+    filterV1(obj: { key: string; value: string }): number {
+        // Filtering master keys in v1 is simply listing the master
+        // keys, as the state of version keys do not change the
+        // result, so we can use Delimiter method directly.
+        return super.filter(obj);
     }
 
-    /**
-     * Create a new gap to be extended afterwards
-     *
-     * @param {string} newKey - gap's first key
-     * @param {number} startWeight - initial weight of the building gap (usually 0 or 1)
-     * @param {number} [cachedWeight] - if continuing a cached gap, weight of the existing
-     *   cached portion
-     * @return {undefined}
-     */
-    _createBuildingGap(newKey: string, startWeight: number, cachedWeight?: number): void {
-        if (this._gapBuilding.state === GapBuildingState.NotBuilding) {
-            const { gapCache, params } = <GapBuildingInfo_NotBuilding> this._gapBuilding;
-            this._gapBuilding = {
-                state: GapBuildingState.Building,
-                gapCache,
-                params: this._checkRefreshedBuildingParams(params),
-                gap: {
-                    firstKey: newKey,
-                    lastKey: newKey,
-                    weight: startWeight,
-                },
-                gapWeight: (cachedWeight || 0) + startWeight,
-            };
-        }
-    }
-
-    _updateBuildingGap(newKey: string): void {
-        const gapBuilding = <GapBuildingInfo_Building> this._gapBuilding;
-        const { params, gap } = gapBuilding;
-        gap.lastKey = newKey;
-        gap.weight += 1;
-        gapBuilding.gapWeight += 1;
-        // the GapCache API requires updating a gap regularly because it can only split
-        // it once per update, by the known last key. In practice the default behavior
-        // is to trigger an update after a number of keys that is half the maximum weight.
-        // It is also useful for other listings to benefit from the cache sooner.
-        if (gapBuilding.gapWeight >= params.minGapWeight &&
-            gap.weight >= params.triggerSaveGapWeight) {
-            this._saveBuildingGap();
-        }
-    }
-
-    _cutBuildingGap(): void {
-        if (this._gapBuilding.state === GapBuildingState.Building) {
-            let gapBuilding = <GapBuildingInfo_Building> this._gapBuilding;
-            let { gapCache, params, gap, gapWeight } = gapBuilding;
-            // only set gaps that are significant enough in weight and
-            // with a non-empty extension
-            if (gapWeight >= params.minGapWeight && gap.weight > 0) {
-                // we're done if we were not allowed to save the gap
-                if (!this._saveBuildingGap()) {
-                    return;
-                }
-                // params may have been refreshed, reload them
-                gapBuilding = <GapBuildingInfo_Building> this._gapBuilding;
-                params = gapBuilding.params;
+    skippingBase() {
+        if (this[this.nextContinueMarker]) {
+            // next marker or next continuation token:
+            // - foo/ : skipping foo/
+            // - foo  : skipping foo.
+            const index = this[this.nextContinueMarker].lastIndexOf(
+                this.delimiter
+            );
+            if (index === this[this.nextContinueMarker].length - 1) {
+                return this[this.nextContinueMarker];
             }
-            this._gapBuilding = {
-                state: GapBuildingState.NotBuilding,
-                gapCache,
-                params,
-            };
+            return this[this.nextContinueMarker] + VID_SEP;
         }
+        return SKIP_NONE;
+    }
+
+    skippingV0() {
+        if (this.inReplayPrefix) {
+            return DbPrefixes.Replay;
+        }
+        return this.skippingBase();
+    }
+
+    skippingV1() {
+        const skipTo = this.skippingBase();
+        if (skipTo === SKIP_NONE) {
+            return SKIP_NONE;
+        }
+        return DbPrefixes.Master + skipTo;
     }
 }

lib/algos/list/delimiterNonCurrent.js

@@ -1,202 +0,0 @@
-const { DelimiterVersions } = require('./delimiterVersions');
-const { FILTER_END, FILTER_SKIP } = require('./tools');
-
-const TRIM_METADATA_MIN_BLOB_SIZE = 10000;
-
-/**
- * Handle object listing with parameters. This extends the base class DelimiterVersions
- * to return the raw non-current versions objects.
- */
-class DelimiterNonCurrent extends DelimiterVersions {
-    /**
-     * Delimiter listing of non-current versions.
-     * @param {Object}  parameters                  - listing parameters
-     * @param {String}  parameters.keyMarker        - key marker
-     * @param {String}  parameters.versionIdMarker  - version id marker
-     * @param {String}  parameters.beforeDate       - limit the response to keys with stale date older than beforeDate.
-     * “stale date” is the date on when a version becomes non-current.
-     * @param {Number} parameters.maxScannedLifecycleListingEntries - max number of entries to be scanned
-     * @param {String} parameters.excludedDataStoreName - exclude dataStoreName matches from the versions
-     * @param {RequestLogger} logger                - The logger of the request
-     * @param {String} [vFormat]                    - versioning key format
-     */
-    constructor(parameters, logger, vFormat) {
-        super(parameters, logger, vFormat);
-
-        this.beforeDate = parameters.beforeDate;
-        this.excludedDataStoreName = parameters.excludedDataStoreName;
-        this.maxScannedLifecycleListingEntries = parameters.maxScannedLifecycleListingEntries;
-
-        // internal state
-        this.prevKey = null;
-        this.staleDate = null;
-
-        this.scannedKeys = 0;
-    }
-
-    getLastModified(value) {
-        let lastModified;
-        try {
-            const v = JSON.parse(value);
-            lastModified = v['last-modified'];
-        } catch (e) {
-            this.logger.warn('could not parse Object Metadata while listing',
-                {
-                    method: 'getLastModified',
-                    err: e.toString(),
-                });
-        }
-        return lastModified;
-    }
-
-    // Overwrite keyHandler_SkippingVersions to include the last version from the previous listing.
-    // The creation (last-modified) date of this version will be the stale date for the following version.
-    // eslint-disable-next-line camelcase
-    keyHandler_SkippingVersions(key, versionId, value) {
-        if (key === this.keyMarker) {
-            // since the nonversioned key equals the marker, there is
-            // necessarily a versionId in this key
-            const _versionId = versionId;
-            if (_versionId < this.versionIdMarker) {
-                // skip all versions until marker
-                return FILTER_SKIP;
-            }
-        }
-        this.setState({
-            id: 1 /* NotSkipping */,
-        });
-        return this.handleKey(key, versionId, value);
-    }
-
-    filter(obj) {
-        if (this.maxScannedLifecycleListingEntries && this.scannedKeys >= this.maxScannedLifecycleListingEntries) {
-            this.IsTruncated = true;
-            this.logger.info('listing stopped due to reaching the maximum scanned entries limit',
-                {
-                    maxScannedLifecycleListingEntries: this.maxScannedLifecycleListingEntries,
-                    scannedKeys: this.scannedKeys,
-                });
-            return FILTER_END;
-        }
-        ++this.scannedKeys;
-        return super.filter(obj);
-    }
-
-    /**
-     * NOTE: Each version of a specific key is sorted from the latest to the oldest
-     * thanks to the way version ids are generated.
-     * DESCRIPTION: Skip the version if it represents the master key, but keep its last-modified date in memory,
-     * which will be the stale date of the following version.
-     * The following version is pushed only:
-     * - if the "stale date" (picked up from the previous version) is available (JSON.parse has not failed),
-     * - if "beforeDate" is not specified or if specified and the "stale date" is older.
-     * - if "excludedDataStoreName" is not specified or if specified and the data store name is different
-     * The in-memory "stale date" is then updated with the version's last-modified date to be used for
-     * the following version.
-     * The process stops and returns the available results if either:
-     * - no more metadata key is left to be processed
-     * - the listing reaches the maximum number of key to be returned
-     * - the internal timeout is reached
-     *  @param {String} key   - The key to add
-     *  @param {String} versionId - The version id
-     *  @param {String} value - The value of the key
-     *  @return {undefined}
-     */
-    addVersion(key, versionId, value) {
-        this.nextKeyMarker = key;
-        this.nextVersionIdMarker = versionId;
-
-        // Skip the version if it represents the non-current version, but keep its last-modified date,
-        // which will be the stale date of the following version.
-        const isCurrentVersion = key !== this.prevKey;
-        if (isCurrentVersion) {
-            this.staleDate = this.getLastModified(value);
-            this.prevKey = key;
-            return;
-        }
-
-        // The following version is pushed only:
-        // - if the "stale date" (picked up from the previous version) is available (JSON.parse has not failed),
-        // - if "beforeDate" is not specified or if specified and the "stale date" is older.
-        // - if "excludedDataStoreName" is not specified or if specified and the data store name is different
-        let lastModified;
-        if (this.staleDate && (!this.beforeDate || this.staleDate < this.beforeDate)) {
-            const parsedValue = this._parse(value);
-            // if parsing fails, skip the key.
-            if (parsedValue) {
-                const dataStoreName = parsedValue.dataStoreName;
-                lastModified = parsedValue['last-modified'];
-                if (!this.excludedDataStoreName || dataStoreName !== this.excludedDataStoreName) {
-                    const s = this._stringify(parsedValue, this.staleDate);
-                    // check that _stringify succeeds to only push objects with a defined staleDate.
-                    if (s) {
-                        this.Versions.push({ key, value: s });
-                        ++this.keys;
-                    }
-                }
-            }
-        }
-
-        // The in-memory "stale date" is then updated with the version's last-modified date to be used for
-        // the following version.
-        this.staleDate = lastModified || this.getLastModified(value);
-
-        return;
-    }
-
-    /**
-     * Parses the stringified entry's value and remove the location property if too large.
-     * @param {string} s - sringified value
-     * @return {object} p - undefined if parsing fails, otherwise it contains the parsed value.
-     */
-    _parse(s) {
-        let p;
-        try {
-            p = JSON.parse(s);
-            if (s.length >= TRIM_METADATA_MIN_BLOB_SIZE) {
-                delete p.location;
-            }
-        } catch (e) {
-            this.logger.warn('Could not parse Object Metadata while listing', {
-                method: 'DelimiterNonCurrent._parse',
-                err: e.toString(),
-            });
-        }
-        return p;
-    }
-
-    _stringify(parsedMD, staleDate) {
-        const p = parsedMD;
-        let s = undefined;
-        p.staleDate = staleDate;
-        try {
-            s = JSON.stringify(p);
-        } catch (e) {
-            this.logger.warn('could not stringify Object Metadata while listing', {
-                method: 'DelimiterNonCurrent._stringify',
-                err: e.toString(),
-            });
-        }
-        return s;
-    }
-
-    result() {
-        const { Versions, IsTruncated, NextKeyMarker, NextVersionIdMarker } = super.result();
-
-        const result = {
-            Contents: Versions,
-            IsTruncated,
-        };
-
-        if (NextKeyMarker) {
-            result.NextKeyMarker = NextKeyMarker;
-        }
-
-        if (NextVersionIdMarker) {
-            result.NextVersionIdMarker = NextVersionIdMarker;
-        }
-
-        return result;
-    }
-}
-module.exports = { DelimiterNonCurrent };

lib/algos/list/delimiterOrphanDeleteMarker.js

@@ -1,204 +0,0 @@
-const DelimiterVersions = require('./delimiterVersions').DelimiterVersions;
-const { FILTER_END } = require('./tools');
-const TRIM_METADATA_MIN_BLOB_SIZE = 10000;
-/**
- * Handle object listing with parameters. This extends the base class DelimiterVersions
- * to return the orphan delete markers. Orphan delete markers are also
- * refered as expired object delete marker.
- * They are delete marker with zero noncurrent versions.
- */
-class DelimiterOrphanDeleteMarker extends DelimiterVersions {
-    /**
-     * Delimiter listing of orphan delete markers.
-     * @param {Object}  parameters            - listing parameters
-     * @param {String}  parameters.beforeDate - limit the response to keys older than beforeDate
-     * @param {Number} parameters.maxScannedLifecycleListingEntries - max number of entries to be scanned
-     * @param {RequestLogger} logger          - The logger of the request
-     * @param {String} [vFormat]              - versioning key format
-     */
-    constructor(parameters, logger, vFormat) {
-        const {
-            marker,
-            maxKeys,
-            prefix,
-            beforeDate,
-            maxScannedLifecycleListingEntries,
-        } = parameters;
-
-        const versionParams = {
-            // The orphan delete marker logic uses the term 'marker' instead of 'keyMarker',
-            // as the latter could suggest the presence of a 'versionIdMarker'.
-            keyMarker: marker,
-            maxKeys,
-            prefix,
-        };
-        super(versionParams, logger, vFormat);
-
-        this.maxScannedLifecycleListingEntries = maxScannedLifecycleListingEntries;
-        this.beforeDate = beforeDate;
-        // this.prevKeyName is used as a marker for the next listing when the current one reaches its entry limit.
-        // We cannot rely on this.keyName, as it contains the name of the current key.
-        // In the event of a listing interruption due to reaching the maximum scanned entries,
-        // relying on this.keyName would cause the next listing to skip the current key because S3 starts
-        // listing after the marker.
-        this.prevKeyName = null;
-        this.keyName = null;
-        this.value = null;
-        this.scannedKeys = 0;
-    }
-
-    _reachedMaxKeys() {
-        if (this.keys >= this.maxKeys) {
-            return true;
-        }
-        return false;
-    }
-
-    _addOrphan() {
-        const parsedValue = this._parse(this.value);
-        // if parsing fails, skip the key.
-        if (parsedValue) {
-            const lastModified = parsedValue['last-modified'];
-            const isDeleteMarker = parsedValue.isDeleteMarker;
-            // We then check if the orphan version is a delete marker and if it is older than the "beforeDate"
-            if ((!this.beforeDate || (lastModified && lastModified < this.beforeDate)) && isDeleteMarker) {
-                // Prefer returning an untrimmed data rather than stopping the service in case of parsing failure.
-                const s = this._stringify(parsedValue) || this.value;
-                this.Versions.push({ key: this.keyName, value: s });
-                this.nextKeyMarker = this.keyName;
-                ++this.keys;
-            }
-        }
-    }
-
-    /**
-     * Parses the stringified entry's value and remove the location property if too large.
-     * @param {string} s - sringified value
-     * @return {object} p - undefined if parsing fails, otherwise it contains the parsed value.
-     */
-    _parse(s) {
-        let p;
-        try {
-            p = JSON.parse(s);
-            if (s.length >= TRIM_METADATA_MIN_BLOB_SIZE) {
-                delete p.location;
-            }
-        } catch (e) {
-            this.logger.warn('Could not parse Object Metadata while listing', {
-                method: 'DelimiterOrphanDeleteMarker._parse',
-                err: e.toString(),
-            });
-        }
-        return p;
-    }
-
-    _stringify(value) {
-        const p = value;
-        let s = undefined;
-        try {
-            s = JSON.stringify(p);
-        } catch (e) {
-            this.logger.warn('could not stringify Object Metadata while listing',
-                {
-                    method: 'DelimiterOrphanDeleteMarker._stringify',
-                    err: e.toString(),
-                });
-        }
-        return s;
-    }
-    /**
-     * The purpose of _isMaxScannedEntriesReached is to restrict the number of scanned entries,
-     * thus controlling resource overhead (CPU...).
-     * @return {boolean} isMaxScannedEntriesReached - true if the maximum limit on the number
-     * of entries scanned has been reached, false otherwise.
-    */
-    _isMaxScannedEntriesReached() {
-        return this.maxScannedLifecycleListingEntries && this.scannedKeys >= this.maxScannedLifecycleListingEntries;
-    }
-
-    filter(obj) {
-        if (this._isMaxScannedEntriesReached()) {
-            this.nextKeyMarker = this.prevKeyName;
-            this.IsTruncated = true;
-            this.logger.info('listing stopped due to reaching the maximum scanned entries limit',
-                {
-                    maxScannedLifecycleListingEntries: this.maxScannedLifecycleListingEntries,
-                    scannedKeys: this.scannedKeys,
-                });
-            return FILTER_END;
-        }
-        ++this.scannedKeys;
-        return super.filter(obj);
-    }
-
-    /**
-     * NOTE: Each version of a specific key is sorted from the latest to the oldest
-     * thanks to the way version ids are generated.
-     * DESCRIPTION: For a given key, the latest version is kept in memory since it is the current version.
-     * If the following version reference a new key, it means that the previous one was an orphan version.
-     * We then check if the orphan version is a delete marker and if it is older than the "beforeDate"
-     * The process stops and returns the available results if either:
-     * - no more metadata key is left to be processed
-     * - the listing reaches the maximum number of key to be returned
-     * - the internal timeout is reached
-     * NOTE: we cannot leverage MongoDB to list keys older than "beforeDate"
-     * because then we will not be able to assess its orphanage.
-     *  @param {String} key   - The object key.
-     * @param {String} versionId   - The object version id.
-     *  @param {String} value - The value of the key
-     *  @return {undefined}
-     */
-    addVersion(key, versionId, value) {
-        // For a given key, the youngest version is kept in memory since it represents the current version.
-        if (key !== this.keyName) {
-            // If this.value is defined, it means that <this.keyName, this.value> pair is "allowed" to be an orphan.
-            if (this.value) {
-                this._addOrphan();
-            }
-            this.prevKeyName = this.keyName;
-            this.keyName = key;
-            this.value = value;
-
-            return;
-        }
-
-        // If the key is not the current version, we can skip it in the next listing
-        // in the case where the current listing is interrupted due to reaching the maximum scanned entries.
-        this.prevKeyName = key;
-        this.keyName = key;
-        this.value = null;
-
-        return;
-    }
-
-    result() {
-        // Only check for remaining last orphan delete marker if the listing is not interrupted.
-        // This will help avoid false positives.
-        if (!this._isMaxScannedEntriesReached()) {
-            // The following check makes sure the last orphan delete marker is not forgotten.
-            if (this.keys < this.maxKeys) {
-                if (this.value) {
-                    this._addOrphan();
-                }
-            // The following make sure that if makeKeys is reached, isTruncated is set to true.
-            // We moved the "isTruncated" from _reachedMaxKeys to make sure we take into account the last entity
-            // if listing is truncated right before the last entity and the last entity is a orphan delete marker.
-            } else {
-                this.IsTruncated = this.maxKeys > 0;
-            }
-        }
-
-        const result = {
-            Contents: this.Versions,
-            IsTruncated: this.IsTruncated,
-        };
-
-        if (this.IsTruncated) {
-            result.NextMarker = this.nextKeyMarker;
-        }
-
-        return result;
-    }
-}
-
-module.exports = { DelimiterOrphanDeleteMarker };

lib/algos/list/delimiterVersions.ts

@@ -1,61 +1,17 @@
-'use strict'; // eslint-disable-line strict
-
-const Extension = require('./Extension').default;
-
+import { Delimiter } from './delimiter';
+import { Version } from '../../versioning/Version';
+import { VersioningConstants as VSConst } from '../../versioning/constants';
 import {
-    FilterState,
-    FilterReturnValue,
-} from './delimiter';
-
-const Version = require('../../versioning/Version').Version;
-const VSConst = require('../../versioning/constants').VersioningConstants;
-const { inc, FILTER_END, FILTER_ACCEPT, FILTER_SKIP, SKIP_NONE } =
-    require('./tools');
+    inc,
+    FILTER_END,
+    FILTER_ACCEPT,
+    FILTER_SKIP,
+    SKIP_NONE,
+} from './tools';
 
 const VID_SEP = VSConst.VersionId.Separator;
 const { DbPrefixes, BucketVersioningKeyFormat } = VSConst;
 
-export const enum DelimiterVersionsFilterStateId {
-    NotSkipping = 1,
-    SkippingPrefix = 2,
-    SkippingVersions = 3,
-};
-
-export interface DelimiterVersionsFilterState_NotSkipping extends FilterState {
-    id: DelimiterVersionsFilterStateId.NotSkipping,
-};
-
-export interface DelimiterVersionsFilterState_SkippingPrefix extends FilterState {
-    id: DelimiterVersionsFilterStateId.SkippingPrefix,
-    prefix: string;
-};
-
-export interface DelimiterVersionsFilterState_SkippingVersions extends FilterState {
-    id: DelimiterVersionsFilterStateId.SkippingVersions,
-    gt: string;
-};
-
-type KeyHandler = (key: string, versionId: string | undefined, value: string) => FilterReturnValue;
-
-type ResultObject = {
-    CommonPrefixes: string[],
-    Versions: {
-        key: string;
-        value: string;
-        versionId: string;
-    }[];
-    IsTruncated: boolean;
-    Delimiter ?: string;
-    NextKeyMarker ?: string;
-    NextVersionIdMarker ?: string;
-};
-
-type GenMDParamsItem = {
-    gt ?: string,
-    gte ?: string,
-    lt ?: string,
-};
-
 /**
  * Handle object listing with parameters
  *
@@ -68,101 +24,66 @@ type GenMDParamsItem = {
  * @prop {String|undefined} prefix     - prefix per amazon format
  * @prop {Number} maxKeys              - number of keys to list
  */
-export class DelimiterVersions extends Extension {
-
-    state: FilterState;
-    keyHandlers: { [id: number]: KeyHandler };
+export class DelimiterVersions extends Delimiter {
+    CommonPrefixes: string[];
+    Contents: string[];
+    IsTruncated: boolean;
+    NextMarker?: string;
+    keys: number;
+    delimiter?: string;
+    prefix?: string;
+    maxKeys: number;
 
     constructor(parameters, logger, vFormat) {
-        super(parameters, logger);
-        // original listing parameters
-        this.delimiter = parameters.delimiter;
-        this.prefix = parameters.prefix;
-        this.maxKeys = parameters.maxKeys || 1000;
+        super(parameters, logger, vFormat);
         // specific to version listing
         this.keyMarker = parameters.keyMarker;
         this.versionIdMarker = parameters.versionIdMarker;
         // internal state
         this.masterKey = undefined;
         this.masterVersionId = undefined;
-        this.nullKey = null;
-        this.vFormat = vFormat || BucketVersioningKeyFormat.v0;
         // listing results
-        this.CommonPrefixes = [];
-        this.Versions = [];
-        this.IsTruncated = false;
-        this.nextKeyMarker = parameters.keyMarker;
-        this.nextVersionIdMarker = undefined;
+        this.NextMarker = parameters.keyMarker;
+        this.NextVersionIdMarker = undefined;
+        this.inReplayPrefix = false;
 
-        this.keyHandlers = {};
-
-        Object.assign(this, {
-            [BucketVersioningKeyFormat.v0]: {
-                genMDParams: this.genMDParamsV0,
-                getObjectKey: this.getObjectKeyV0,
-                skipping: this.skippingV0,
-            },
-            [BucketVersioningKeyFormat.v1]: {
-                genMDParams: this.genMDParamsV1,
-                getObjectKey: this.getObjectKeyV1,
-                skipping: this.skippingV1,
-            },
-        }[this.vFormat]);
-
-        if (this.vFormat === BucketVersioningKeyFormat.v0) {
-            this.setKeyHandler(
-                DelimiterVersionsFilterStateId.NotSkipping,
-                this.keyHandler_NotSkippingV0.bind(this));
-        } else {
-            this.setKeyHandler(
-                DelimiterVersionsFilterStateId.NotSkipping,
-                this.keyHandler_NotSkippingV1.bind(this));
-        }
-        this.setKeyHandler(
-            DelimiterVersionsFilterStateId.SkippingPrefix,
-            this.keyHandler_SkippingPrefix.bind(this));
-
-        this.setKeyHandler(
-            DelimiterVersionsFilterStateId.SkippingVersions,
-            this.keyHandler_SkippingVersions.bind(this));
-
-        if (this.versionIdMarker) {
-            this.state = <DelimiterVersionsFilterState_SkippingVersions> {
-                id: DelimiterVersionsFilterStateId.SkippingVersions,
-                gt: `${this.keyMarker}${VID_SEP}${this.versionIdMarker}`,
-            };
-        } else {
-            this.state = <DelimiterVersionsFilterState_NotSkipping> {
-                id: DelimiterVersionsFilterStateId.NotSkipping,
-            };
-        }
+        Object.assign(
+            this,
+            {
+                [BucketVersioningKeyFormat.v0]: {
+                    genMDParams: this.genMDParamsV0,
+                    filter: this.filterV0,
+                    skipping: this.skippingV0,
+                },
+                [BucketVersioningKeyFormat.v1]: {
+                    genMDParams: this.genMDParamsV1,
+                    filter: this.filterV1,
+                    skipping: this.skippingV1,
+                },
+            }[this.vFormat]
+        );
     }
 
     genMDParamsV0() {
-        const params: GenMDParamsItem = {};
-        if (this.prefix) {
-            params.gte = this.prefix;
-            params.lt = inc(this.prefix);
+        const params = {};
+        if (this.parameters.prefix) {
+            params.gte = this.parameters.prefix;
+            params.lt = inc(this.parameters.prefix);
         }
-        if (this.keyMarker && this.delimiter) {
-            const commonPrefix = this.getCommonPrefix(this.keyMarker);
-            if (commonPrefix) {
-                const afterPrefix = inc(commonPrefix);
-                if (!params.gte || afterPrefix > params.gte) {
-                    params.gte = afterPrefix;
-                }
+        if (this.parameters.keyMarker) {
+            if (params.gte && params.gte > this.parameters.keyMarker) {
+                return params;
             }
-        }
-        if (this.keyMarker && (!params.gte || this.keyMarker >= params.gte)) {
             delete params.gte;
-            if (this.versionIdMarker) {
-                // start from the beginning of versions so we can
-                // check if there's a null key and fetch it
-                // (afterwards, we can skip the rest of versions until
-                // we reach versionIdMarker)
-                params.gte = `${this.keyMarker}${VID_SEP}`;
+            if (this.parameters.versionIdMarker) {
+                // versionIdMarker should always come with keyMarker
+                // but may not be the other way around
+                params.gt =
+                    this.parameters.keyMarker +
+                    VID_SEP +
+                    this.parameters.versionIdMarker;
             } else {
-                params.gt = `${this.keyMarker}${inc(VID_SEP)}`;
+                params.gt = inc(this.parameters.keyMarker + VID_SEP);
             }
         }
         return params;
@@ -171,41 +92,44 @@ export class DelimiterVersions extends Extension {
     genMDParamsV1() {
         // return an array of two listing params sets to ask for
         // synchronized listing of M and V ranges
-        const v0Params: GenMDParamsItem = this.genMDParamsV0();
-        const mParams: GenMDParamsItem = {};
-        const vParams: GenMDParamsItem = {};
-        if (v0Params.gt) {
-            mParams.gt = `${DbPrefixes.Master}${v0Params.gt}`;
-            vParams.gt = `${DbPrefixes.Version}${v0Params.gt}`;
-        } else if (v0Params.gte) {
-            mParams.gte = `${DbPrefixes.Master}${v0Params.gte}`;
-            vParams.gte = `${DbPrefixes.Version}${v0Params.gte}`;
+        const params = [{}, {}];
+        if (this.parameters.prefix) {
+            params[0].gte = DbPrefixes.Master + this.parameters.prefix;
+            params[0].lt = DbPrefixes.Master + inc(this.parameters.prefix);
+            params[1].gte = DbPrefixes.Version + this.parameters.prefix;
+            params[1].lt = DbPrefixes.Version + inc(this.parameters.prefix);
         } else {
-            mParams.gte = DbPrefixes.Master;
-            vParams.gte = DbPrefixes.Version;
+            params[0].gte = DbPrefixes.Master;
+            params[0].lt = inc(DbPrefixes.Master); // stop after the last master key
+            params[1].gte = DbPrefixes.Version;
+            params[1].lt = inc(DbPrefixes.Version); // stop after the last version key
         }
-        if (v0Params.lt) {
-            mParams.lt = `${DbPrefixes.Master}${v0Params.lt}`;
-            vParams.lt = `${DbPrefixes.Version}${v0Params.lt}`;
-        } else {
-            mParams.lt = inc(DbPrefixes.Master);
-            vParams.lt = inc(DbPrefixes.Version);
+        if (this.parameters.keyMarker) {
+            if (
+                params[1].gte <=
+                DbPrefixes.Version + this.parameters.keyMarker
+            ) {
+                delete params[0].gte;
+                delete params[1].gte;
+                params[0].gt =
+                    DbPrefixes.Master +
+                    inc(this.parameters.keyMarker + VID_SEP);
+                if (this.parameters.versionIdMarker) {
+                    // versionIdMarker should always come with keyMarker
+                    // but may not be the other way around
+                    params[1].gt =
+                        DbPrefixes.Version +
+                        this.parameters.keyMarker +
+                        VID_SEP +
+                        this.parameters.versionIdMarker;
+                } else {
+                    params[1].gt =
+                        DbPrefixes.Version +
+                        inc(this.parameters.keyMarker + VID_SEP);
+                }
+            }
         }
-        return [mParams, vParams];
-    }
-
-    /**
-     * check if the max keys count has been reached and set the
-     * final state of the result if it is the case
-     * @return {Boolean} - indicates if the iteration has to stop
-     */
-    _reachedMaxKeys(): boolean {
-        if (this.keys >= this.maxKeys) {
-            // In cases of maxKeys <= 0 -> IsTruncated = false
-            this.IsTruncated = this.maxKeys > 0;
-            return true;
-        }
-        return false;
+        return params;
     }
 
     /**
@@ -219,122 +143,44 @@ export class DelimiterVersions extends Extension {
      *   * -1 if master key < version key
      *   * 1 if master key > version key
      */
-    compareObjects(masterObj, versionObj) {
+    compareObjects(masterObj, versionObj): number {
         const masterKey = masterObj.key.slice(DbPrefixes.Master.length);
         const versionKey = versionObj.key.slice(DbPrefixes.Version.length);
         return masterKey < versionKey ? -1 : 1;
     }
 
-    /**
-     * Parse a listing key into its nonversioned key and version ID components
-     *
-     * @param {string} key - full listing key
-     * @return {object} obj
-     * @return {string} obj.key - nonversioned part of key
-     * @return {string} [obj.versionId] - version ID in the key
-     */
-    parseKey(fullKey: string): { key: string, versionId ?: string } {
-        const versionIdIndex = fullKey.indexOf(VID_SEP);
-        if (versionIdIndex === -1) {
-            return { key: fullKey };
-        }
-        const nonversionedKey: string = fullKey.slice(0, versionIdIndex);
-        let versionId: string = fullKey.slice(versionIdIndex + 1);
-        return { key: nonversionedKey, versionId };
-    }
-
-    /**
-     * Include a key in the listing output, in the Versions or CommonPrefix result
-     *
-     * @param {string} key - key (without version ID)
-     * @param {string} versionId - version ID
-     * @param {string} value - metadata value
-     * @return {undefined}
-     */
-    addKey(key: string, versionId: string, value: string) {
-        // add the subprefix to the common prefixes if the key has the delimiter
-        const commonPrefix = this.getCommonPrefix(key);
-        if (commonPrefix) {
-            this.addCommonPrefix(commonPrefix);
-            // transition into SkippingPrefix state to skip all following keys
-            // while they start with the same prefix
-            this.setState(<DelimiterVersionsFilterState_SkippingPrefix> {
-                id: DelimiterVersionsFilterStateId.SkippingPrefix,
-                prefix: commonPrefix,
-            });
-        } else {
-            this.addVersion(key, versionId, value);
-        }
-    }
-
     /**
      *  Add a (key, versionId, value) tuple to the listing.
      *  Set the NextMarker to the current key
      *  Increment the keys counter
-     *  @param {String} key         - The key to add
-     *  @param {String} versionId   - versionId
-     *  @param {String} value       - The value of the key
-     *  @return {undefined}
+     *  @param {object} obj             - the entry to add to the listing result
+     *  @param {String} obj.key         - The key to add
+     *  @param {String} obj.versionId   - versionId
+     *  @param {String} obj.value       - The value of the key
+     *  @return {Boolean} - indicates if iteration should continue
      */
-    addVersion(key: string, versionId: string, value: string) {
-        this.Versions.push({
-            key,
-            versionId,
-            value: this.trimMetadata(value),
+    addContents(obj: {
+        key: string;
+        versionId: string;
+        value: string;
+    }): boolean {
+        if (this._reachedMaxKeys()) {
+            return FILTER_END;
+        }
+        this.Contents.push({
+            key: obj.key,
+            value: this.trimMetadata(obj.value),
+            versionId: obj.versionId,
         });
-        this.nextKeyMarker = key;
-        this.nextVersionIdMarker = versionId;
+        this.NextMarker = obj.key;
+        this.NextVersionIdMarker = obj.versionId;
         ++this.keys;
-    }
-
-    getCommonPrefix(key: string): string | undefined {
-        if (!this.delimiter) {
-            return undefined;
-        }
-        const baseIndex = this.prefix ? this.prefix.length : 0;
-        const delimiterIndex = key.indexOf(this.delimiter, baseIndex);
-        if (delimiterIndex === -1) {
-            return undefined;
-        }
-        return key.substring(0, delimiterIndex + this.delimiter.length);
+        return FILTER_ACCEPT;
     }
 
     /**
-     * Add a Common Prefix in the list
-     * @param {String} commonPrefix   - common prefix to add
-     * @return {undefined}
-     */
-    addCommonPrefix(commonPrefix: string): void {
-        // add the new prefix to the list
-        this.CommonPrefixes.push(commonPrefix);
-        ++this.keys;
-        this.nextKeyMarker = commonPrefix;
-        this.nextVersionIdMarker = undefined;
-    }
-
-    /**
-     * Cache the current null key, to save it for outputting it later at
-     * the correct position
-     *
-     * @param {String} key        - nonversioned key of the null key
-     * @param {String} versionId  - real version ID of the null key
-     * @param {String} value      - value of the null key
-     * @return {undefined}
-     */
-    cacheNullKey(key: string, versionId: string, value: string): void {
-        this.nullKey = { key, versionId, value };
-    }
-
-    getObjectKeyV0(obj: { key: string }): string {
-        return obj.key;
-    }
-
-    getObjectKeyV1(obj: { key: string }): string {
-        return obj.key.slice(DbPrefixes.Master.length);
-    }
-
-    /**
-     *  Filter to apply on each iteration, based on:
+     *  Filter to apply on each iteration if bucket is in v0
+     *  versioning key format, based on:
      *  - prefix
      *  - delimiter
      *  - maxKeys
@@ -344,147 +190,100 @@ export class DelimiterVersions extends Extension {
      *  @param {String} obj.value - The value of the element
      *  @return {number}          - indicates if iteration should continue
      */
-    filter(obj: { key: string, value: string }): FilterReturnValue {
-        const key = this.getObjectKey(obj);
-        const value = obj.value;
-
-        const { key: nonversionedKey, versionId: keyVersionId } = this.parseKey(key);
-        if (this.nullKey) {
-            if (this.nullKey.key !== nonversionedKey
-                || this.nullKey.versionId < <string> keyVersionId) {
-                this.handleKey(
-                    this.nullKey.key, this.nullKey.versionId, this.nullKey.value);
-                this.nullKey = null;
-            }
-        }
-        if (keyVersionId === '') {
-            // null key
-            this.cacheNullKey(nonversionedKey, Version.from(value).getVersionId(), value);
-            if (this.state.id === DelimiterVersionsFilterStateId.SkippingVersions) {
-                return FILTER_SKIP;
-            }
-            return FILTER_ACCEPT;
-        }
-        return this.handleKey(nonversionedKey, keyVersionId, value);
-    }
-
-    setState(state: FilterState): void {
-        this.state = state;
-    }
-
-    setKeyHandler(stateId: number, keyHandler: KeyHandler): void {
-        this.keyHandlers[stateId] = keyHandler;
-    }
-
-    handleKey(key: string, versionId: string | undefined, value: string): FilterReturnValue {
-        return this.keyHandlers[this.state.id](key, versionId, value);
-    }
-
-    keyHandler_NotSkippingV0(key: string, versionId: string | undefined, value: string): FilterReturnValue {
-        if (key.startsWith(DbPrefixes.Replay)) {
-            // skip internal replay prefix entirely
-            this.setState(<DelimiterVersionsFilterState_SkippingPrefix> {
-                id: DelimiterVersionsFilterStateId.SkippingPrefix,
-                prefix: DbPrefixes.Replay,
-            });
+    filterV0(obj: { key: string; value: string }): number {
+        if (obj.key.startsWith(DbPrefixes.Replay)) {
+            this.inReplayPrefix = true;
             return FILTER_SKIP;
         }
-        if (Version.isPHD(value)) {
+        this.inReplayPrefix = false;
+
+        if (Version.isPHD(obj.value)) {
+            // return accept to avoid skipping the next values in range
             return FILTER_ACCEPT;
         }
-        return this.filter_onNewKey(key, versionId, value);
+        return this.filterCommon(obj.key, obj.value);
     }
 
-    keyHandler_NotSkippingV1(key: string, versionId: string | undefined, value: string): FilterReturnValue {
-        // NOTE: this check on PHD is only useful for Artesca, S3C
-        // does not use PHDs in V1 format
-        if (Version.isPHD(value)) {
-            return FILTER_ACCEPT;
-        }
-        return this.filter_onNewKey(key, versionId, value);
+    /**
+     *  Filter to apply on each iteration if bucket is in v1
+     *  versioning key format, based on:
+     *  - prefix
+     *  - delimiter
+     *  - maxKeys
+     *  The marker is being handled directly by levelDB
+     *  @param {Object} obj       - The key and value of the element
+     *  @param {String} obj.key   - The key of the element
+     *  @param {String} obj.value - The value of the element
+     *  @return {number}          - indicates if iteration should continue
+     */
+    filterV1(obj: { key: string; value: string }): number {
+        // this function receives both M and V keys, but their prefix
+        // length is the same so we can remove their prefix without
+        // looking at the type of key
+        return this.filterCommon(
+            obj.key.slice(DbPrefixes.Master.length),
+            obj.value
+        );
     }
 
-    filter_onNewKey(key: string, versionId: string | undefined, value: string): FilterReturnValue {
-        if (this._reachedMaxKeys()) {
-            return FILTER_END;
+    filterCommon(key, value) {
+        if (this.prefix && !key.startsWith(this.prefix)) {
+            return FILTER_SKIP;
         }
-        if (versionId === undefined) {
+        let nonversionedKey;
+        let versionId = undefined;
+        const versionIdIndex = key.indexOf(VID_SEP);
+        if (versionIdIndex < 0) {
+            nonversionedKey = key;
             this.masterKey = key;
             this.masterVersionId = Version.from(value).getVersionId() || 'null';
-            this.addKey(this.masterKey, this.masterVersionId, value);
+            versionId = this.masterVersionId;
         } else {
-            if (this.masterKey === key && this.masterVersionId === versionId) {
-                // do not add a version key if it is the master version
-                return FILTER_ACCEPT;
-            }
-            this.addKey(key, versionId, value);
-        }
-        return FILTER_ACCEPT;
-    }
-
-    keyHandler_SkippingPrefix(key: string, versionId: string | undefined, value: string): FilterReturnValue {
-        const { prefix } = <DelimiterVersionsFilterState_SkippingPrefix> this.state;
-        if (key.startsWith(prefix)) {
-            return FILTER_SKIP;
-        }
-        this.setState(<DelimiterVersionsFilterState_NotSkipping> {
-            id: DelimiterVersionsFilterStateId.NotSkipping,
-        });
-        return this.handleKey(key, versionId, value);
-    }
-
-    keyHandler_SkippingVersions(key: string, versionId: string | undefined, value: string): FilterReturnValue {
-        if (key === this.keyMarker) {
-            // since the nonversioned key equals the marker, there is
-            // necessarily a versionId in this key
-            const _versionId = <string> versionId;
-            if (_versionId < this.versionIdMarker) {
-                // skip all versions until marker
+            nonversionedKey = key.slice(0, versionIdIndex);
+            versionId = key.slice(versionIdIndex + 1);
+            // skip a version key if it is the master version
+            if (
+                this.masterKey === nonversionedKey &&
+                this.masterVersionId === versionId
+            ) {
                 return FILTER_SKIP;
             }
-            if (_versionId === this.versionIdMarker) {
-                // nothing left to skip, so return ACCEPT, but don't add this version
-                return FILTER_ACCEPT;
+            this.masterKey = undefined;
+            this.masterVersionId = undefined;
+        }
+        if (this.delimiter) {
+            const baseIndex = this.prefix ? this.prefix.length : 0;
+            const delimiterIndex = nonversionedKey.indexOf(
+                this.delimiter,
+                baseIndex
+            );
+            if (delimiterIndex >= 0) {
+                return this.addCommonPrefix(nonversionedKey, delimiterIndex);
             }
         }
-        this.setState(<DelimiterVersionsFilterState_NotSkipping> {
-            id: DelimiterVersionsFilterStateId.NotSkipping,
-        });
-        return this.handleKey(key, versionId, value);
-    }
-
-    skippingBase(): string | undefined {
-        switch (this.state.id) {
-        case DelimiterVersionsFilterStateId.SkippingPrefix:
-            const { prefix } = <DelimiterVersionsFilterState_SkippingPrefix> this.state;
-            return inc(prefix);
-
-        case DelimiterVersionsFilterStateId.SkippingVersions:
-            const { gt } = <DelimiterVersionsFilterState_SkippingVersions> this.state;
-            // the contract of skipping() is to return the first key
-            // that can be skipped to, so adding a null byte to skip
-            // over the existing versioned key set in 'gt'
-            return `${gt}\0`;
-
-        default:
-            return SKIP_NONE;
-        }
+        return this.addContents({ key: nonversionedKey, value, versionId });
     }
 
     skippingV0() {
-        return this.skippingBase();
+        if (this.inReplayPrefix) {
+            return DbPrefixes.Replay;
+        }
+        if (this.NextMarker) {
+            const index = this.NextMarker.lastIndexOf(this.delimiter);
+            if (index === this.NextMarker.length - 1) {
+                return this.NextMarker;
+            }
+        }
+        return SKIP_NONE;
     }
 
     skippingV1() {
-        const skipTo = this.skippingBase();
-        if (skipTo === SKIP_NONE) {
+        const skipV0 = this.skippingV0();
+        if (skipV0 === SKIP_NONE) {
             return SKIP_NONE;
         }
         // skip to the same object key in both M and V range listings
-        return [
-            `${DbPrefixes.Master}${skipTo}`,
-            `${DbPrefixes.Version}${skipTo}`,
-        ];
+        return [DbPrefixes.Master + skipV0, DbPrefixes.Version + skipV0];
     }
 
     /**
@@ -494,42 +293,19 @@ export class DelimiterVersions extends Extension {
      *  @return {Object} - following amazon format
      */
     result() {
-        // Add the last null key if still in cache (when it is the
-        // last version of the last key)
-        //
-        // NOTE: _reachedMaxKeys sets IsTruncated to true when it
-        // returns true. Here we want this because either:
-        //
-        // - we did not reach the max keys yet so the result is not
-        // - truncated, and there is still room for the null key in
-        // - the results
-        //
-        // - OR we reached it already while having to process a new
-        //   key (so the result is truncated even without the null key)
-        //
-        // - OR we are *just* below the limit but the null key to add
-        //   does not fit, so we know the result is now truncated
-        //   because there remains the null key to be output.
-        //
-        if (this.nullKey) {
-            this.handleKey(this.nullKey.key, this.nullKey.versionId, this.nullKey.value);
-        }
-        const result: ResultObject = {
+        /* NextMarker is only provided when delimiter is used.
+         * specified in v1 listing documentation
+         * http://docs.aws.amazon.com/AmazonS3/latest/API/RESTBucketGET.html
+         */
+        return {
             CommonPrefixes: this.CommonPrefixes,
-            Versions: this.Versions,
+            Versions: this.Contents,
             IsTruncated: this.IsTruncated,
+            NextKeyMarker: this.IsTruncated ? this.NextMarker : undefined,
+            NextVersionIdMarker: this.IsTruncated
+                ? this.NextVersionIdMarker
+                : undefined,
+            Delimiter: this.delimiter,
         };
-        if (this.delimiter) {
-            result.Delimiter = this.delimiter;
-        }
-        if (this.IsTruncated) {
-            result.NextKeyMarker = this.nextKeyMarker;
-            if (this.nextVersionIdMarker) {
-                result.NextVersionIdMarker = this.nextVersionIdMarker;
-            }
-        };
-        return result;
     }
 }
-
-module.exports = { DelimiterVersions };

lib/algos/list/exportAlgos.js

@@ -1,12 +0,0 @@
-module.exports = {
-    Basic: require('./basic').List,
-    Delimiter: require('./delimiter').Delimiter,
-    DelimiterVersions: require('./delimiterVersions')
-        .DelimiterVersions,
-    DelimiterMaster: require('./delimiterMaster')
-        .DelimiterMaster,
-    MPU: require('./MPU').MultipartUploads,
-    DelimiterCurrent: require('./delimiterCurrent').DelimiterCurrent,
-    DelimiterNonCurrent: require('./delimiterNonCurrent').DelimiterNonCurrent,
-    DelimiterOrphanDeleteMarker: require('./delimiterOrphanDeleteMarker').DelimiterOrphanDeleteMarker,
-};

lib/algos/list/exportAlgos.ts

@@ -0,0 +1,5 @@
+export { List as Basic } from './basic';
+export { Delimiter } from './delimiter';
+export { DelimiterVersions } from './delimiterVersions';
+export { DelimiterMaster } from './delimiterMaster';
+export { MultipartUploads as MPU } from './MPU';

lib/algos/list/skip.ts

@@ -1,21 +1,25 @@
-const assert = require('assert');
-
-const { FILTER_END, FILTER_SKIP, SKIP_NONE } = require('./tools');
-
+import assert from 'assert';
+import { FILTER_END, FILTER_SKIP, SKIP_NONE } from './tools';
 
 const MAX_STREAK_LENGTH = 100;
 
 /**
  * Handle the filtering and the skip mechanism of a listing result.
  */
-class Skip {
+export class Skip {
+    extension;
+    gteParams;
+    listingEndCb;
+    skipRangeCb;
+    streakLength;
+
     /**
      * @param {Object} params           - skip parameters
      * @param {Object} params.extension - delimiter extension used (required)
      * @param {String} params.gte       - current range gte (greater than or
      *                                    equal) used by the client code
      */
-    constructor(params) {
+    constructor(params: { extension: any; gte: string }) {
         assert(params.extension);
 
         this.extension = params.extension;
@@ -47,27 +51,22 @@ class Skip {
      * This function calls the listing end or the skip range callbacks if
      * needed.
      */
-    filter(entry) {
+    filter(entry): void {
         assert(this.listingEndCb);
         assert(this.skipRangeCb);
 
         const filteringResult = this.extension.filter(entry);
-        const skipTo = this.extension.skipping();
+        const skippingRange = this.extension.skipping();
 
         if (filteringResult === FILTER_END) {
             this.listingEndCb();
-        } else if (filteringResult === FILTER_SKIP
-                   && skipTo !== SKIP_NONE) {
+        } else if (
+            filteringResult === FILTER_SKIP &&
+            skippingRange !== SKIP_NONE
+        ) {
             if (++this.streakLength >= MAX_STREAK_LENGTH) {
-                let newRange;
-                if (Array.isArray(skipTo)) {
-                    newRange = [];
-                    for (let i = 0; i < skipTo.length; ++i) {
-                        newRange.push(skipTo[i]);
-                    }
-                } else {
-                    newRange = skipTo;
-                }
+                const newRange = this._inc(skippingRange);
+
                 /* Avoid to loop on the same range again and again. */
                 if (newRange === this.gteParams) {
                     this.streakLength = 1;
@@ -79,7 +78,14 @@ class Skip {
             this.streakLength = 0;
         }
     }
+
+    _inc(str: string) {
+        if (!str) {
+            return str;
+        }
+        const lastCharValue = str.charCodeAt(str.length - 1);
+        const lastCharNewValue = String.fromCharCode(lastCharValue + 1);
+
+        return `${str.slice(0, str.length - 1)}${lastCharNewValue}`;
+    }
 }
-
-
-module.exports = Skip;

lib/algos/list/tools.ts

@@ -1,10 +1,11 @@
-const { DbPrefixes } = require('../../versioning/constants').VersioningConstants;
+import { VersioningConstants as VSConst } from '../../versioning/constants';
+const { DbPrefixes } = VSConst
 
 // constants for extensions
-const SKIP_NONE = undefined; // to be inline with the values of NextMarker
-const FILTER_ACCEPT = 1;
-const FILTER_SKIP = 0;
-const FILTER_END = -1;
+export const SKIP_NONE = undefined; // to be inline with the values of NextMarker
+export const FILTER_ACCEPT = 1;
+export const FILTER_SKIP = 0;
+export const FILTER_END = -1;
 
 /**
  * This function check if number is valid
@@ -15,8 +16,8 @@ const FILTER_END = -1;
  * @param {Number} limit - The limit to respect
  * @return {Number} - The parsed number || limit
  */
-function checkLimit(number, limit) {
-    const parsed = Number.parseInt(number, 10);
+export function checkLimit(number: number, limit: number): number {
+    const parsed = Number.parseInt(number, 10) 
     const valid = !Number.isNaN(parsed) && (!limit || parsed <= limit);
     return valid ? parsed : limit;
 }
@@ -28,7 +29,7 @@ function checkLimit(number, limit) {
  * @return {string} - the incremented string
  *                    or the input if it is not valid
  */
-function inc(str) {
+export function inc(str: string): string {
     return str ? (str.slice(0, str.length - 1) +
             String.fromCharCode(str.charCodeAt(str.length - 1) + 1)) : str;
 }
@@ -40,7 +41,7 @@ function inc(str) {
  * @param {object} v0params - listing parameters for v0 format
  * @return {object} - listing parameters for v1 format
  */
-function listingParamsMasterKeysV0ToV1(v0params) {
+export function listingParamsMasterKeysV0ToV1(v0params: any): any {
     const v1params = Object.assign({}, v0params);
     if (v0params.gt !== undefined) {
         v1params.gt = `${DbPrefixes.Master}${v0params.gt}`;
@@ -58,13 +59,3 @@ function listingParamsMasterKeysV0ToV1(v0params) {
     }
     return v1params;
 }
-
-module.exports = {
-    checkLimit,
-    inc,
-    listingParamsMasterKeysV0ToV1,
-    SKIP_NONE,
-    FILTER_END,
-    FILTER_SKIP,
-    FILTER_ACCEPT,
-};

lib/algos/set/ArrayUtils.ts

@@ -1,4 +1,4 @@
-function indexOf(arr, value) {
+export function indexOf<T>(arr: T[], value: T) {
     if (!arr.length) {
         return -1;
     }
@@ -22,10 +22,10 @@ function indexOf(arr, value) {
     return -1;
 }
 
-function indexAtOrBelow(arr, value) {
-    let i;
-    let lo;
-    let hi;
+export function indexAtOrBelow<T>(arr: T[], value: T) {
+    let i: number;
+    let lo: number;
+    let hi: number;
 
     if (!arr.length || arr[0] > value) {
         return -1;
@@ -52,7 +52,7 @@ function indexAtOrBelow(arr, value) {
 /*
  * perform symmetric diff in O(m + n)
  */
-function symDiff(k1, k2, v1, v2, cb) {
+export function symDiff(k1, k2, v1, v2, cb) {
     let i = 0;
     let j = 0;
     const n = k1.length;
@@ -79,9 +79,3 @@ function symDiff(k1, k2, v1, v2, cb) {
         j++;
     }
 }
-
-module.exports = {
-    indexOf,
-    indexAtOrBelow,
-    symDiff,
-};

lib/algos/set/SortedSet.ts

@@ -1,13 +1,12 @@
-const ArrayUtils = require('./ArrayUtils');
+import * as ArrayUtils from './ArrayUtils';
 
-class SortedSet {
-    constructor(obj) {
-        if (obj) {
-            this.keys = obj.keys;
-            this.values = obj.values;
-        } else {
-            this.clear();
-        }
+export default class SortedSet<Key, Value> {
+    keys: Key[];
+    values: Value[];
+
+    constructor(obj?: { keys: Key[]; values: Value[] }) {
+        this.keys = obj?.keys ?? [];
+        this.values = obj?.values ?? [];
     }
 
     clear() {
@@ -19,7 +18,7 @@ class SortedSet {
         return this.keys.length;
     }
 
-    set(key, value) {
+    set(key: Key, value: Value) {
         const index = ArrayUtils.indexAtOrBelow(this.keys, key);
         if (this.keys[index] === key) {
             this.values[index] = value;
@@ -29,17 +28,17 @@ class SortedSet {
         this.values.splice(index + 1, 0, value);
     }
 
-    isSet(key) {
+    isSet(key: Key) {
         const index = ArrayUtils.indexOf(this.keys, key);
         return index >= 0;
     }
 
-    get(key) {
+    get(key: Key) {
         const index = ArrayUtils.indexOf(this.keys, key);
         return index >= 0 ? this.values[index] : undefined;
     }
 
-    del(key) {
+    del(key: Key) {
         const index = ArrayUtils.indexOf(this.keys, key);
         if (index >= 0) {
             this.keys.splice(index, 1);
@@ -47,5 +46,3 @@ class SortedSet {
         }
     }
 }
-
-module.exports = SortedSet;

lib/algos/stream/MergeStream.ts

@@ -1,7 +1,17 @@
-const stream = require('stream');
+import stream from 'stream';
 
-class MergeStream extends stream.Readable {
-    constructor(stream1, stream2, compare) {
+export default class MergeStream extends stream.Readable {
+    _compare: (a: any, b: any) => number;
+    _streams: [stream.Readable, stream.Readable];
+    _peekItems: [undefined | null, undefined | null];
+    _streamEof: [boolean, boolean];
+    _streamToResume: stream.Readable | null;
+
+    constructor(
+        stream1: stream.Readable,
+        stream2: stream.Readable,
+        compare: (a: any, b: any) => number
+    ) {
         super({ objectMode: true });
 
         this._compare = compare;
@@ -16,13 +26,13 @@ class MergeStream extends stream.Readable {
         this._streamEof = [false, false];
         this._streamToResume = null;
 
-        stream1.on('data', item => this._onItem(stream1, item, 0, 1));
+        stream1.on('data', (item) => this._onItem(stream1, item, 0, 1));
         stream1.once('end', () => this._onEnd(stream1, 0, 1));
-        stream1.once('error', err => this._onError(stream1, err, 0, 1));
+        stream1.once('error', (err) => this._onError(stream1, err, 0, 1));
 
-        stream2.on('data', item => this._onItem(stream2, item, 1, 0));
+        stream2.on('data', (item) => this._onItem(stream2, item, 1, 0));
         stream2.once('end', () => this._onEnd(stream2, 1, 0));
-        stream2.once('error', err => this._onError(stream2, err, 1, 0));
+        stream2.once('error', (err) => this._onError(stream2, err, 1, 0));
     }
 
     _read() {
@@ -41,7 +51,7 @@ class MergeStream extends stream.Readable {
         callback();
     }
 
-    _onItem(myStream, myItem, myIndex, otherIndex) {
+    _onItem(myStream: stream.Readable, myItem, myIndex, otherIndex) {
         this._peekItems[myIndex] = myItem;
         const otherItem = this._peekItems[otherIndex];
         if (otherItem === undefined) {
@@ -69,7 +79,7 @@ class MergeStream extends stream.Readable {
         return undefined;
     }
 
-    _onEnd(myStream, myIndex, otherIndex) {
+    _onEnd(myStream: stream.Readable, myIndex, otherIndex) {
         this._streamEof[myIndex] = true;
         if (this._peekItems[myIndex] === undefined) {
             this._peekItems[myIndex] = null;
@@ -94,7 +104,7 @@ class MergeStream extends stream.Readable {
         return otherStream.resume();
     }
 
-    _onError(myStream, err, myIndex, otherIndex) {
+    _onError(myStream: stream.Readable, err, myIndex, otherIndex) {
         myStream.destroy();
         if (this._streams[otherIndex]) {
             this._streams[otherIndex].destroy();
@@ -102,5 +112,3 @@ class MergeStream extends stream.Readable {
         this.emit('error', err);
     }
 }
-
-module.exports = MergeStream;

lib/auth/AuthInfo.ts

@@ -6,15 +6,16 @@ import * as constants from '../constants';
  * shortid, email, accountDisplayName and IAMdisplayName (if applicable)
  * @return {AuthInfo} an AuthInfo instance
  */
-export default class AuthInfo {
-    arn: string;
-    canonicalID: string;
-    shortid: string;
-    email: string;
-    accountDisplayName: string;
-    IAMdisplayName: string;
 
-    constructor(objectFromVault: any) {
+export default class AuthInfo {
+    arn
+    canonicalID
+    shortid
+    email
+    accountDisplayName
+    IAMdisplayName
+    
+    constructor(objectFromVault) {
         // amazon resource name for IAM user (if applicable)
         this.arn = objectFromVault.arn;
         // account canonicalID
@@ -54,11 +55,12 @@ export default class AuthInfo {
         return this.canonicalID === constants.publicId;
     }
     isRequesterAServiceAccount() {
-        return this.canonicalID.startsWith(
-            `${constants.zenkoServiceAccount}/`);
+        return this.canonicalID.startsWith(`${constants.zenkoServiceAccount}/`);
     }
-    isRequesterThisServiceAccount(serviceName: string) {
-        const computedCanonicalID = `${constants.zenkoServiceAccount}/${serviceName}`;
-        return this.canonicalID === computedCanonicalID;
+    isRequesterThisServiceAccount(serviceName) {
+        return (
+            this.canonicalID ===
+            `${constants.zenkoServiceAccount}/${serviceName}`
+        );
     }
 }

lib/auth/Vault.ts

@@ -1,22 +1,16 @@
-import { Logger } from 'werelogs';
 import errors from '../errors';
 import AuthInfo from './AuthInfo';
 
 /** vaultSignatureCb parses message from Vault and instantiates
- * @param err - error from vault
- * @param authInfo - info from vault
- * @param log - log for request
- * @param callback - callback to authCheck functions
- * @param [streamingV4Params] - present if v4 signature;
+ * @param {object} err - error from vault
+ * @param {object} authInfo - info from vault
+ * @param {object} log - log for request
+ * @param {function} callback - callback to authCheck functions
+ * @param {object} [streamingV4Params] - present if v4 signature;
  * items used to calculate signature on chunks if streaming auth
+ * @return {undefined}
  */
-function vaultSignatureCb(
-    err: Error | null,
-    authInfo: { message: { body: any } },
-    log: Logger,
-    callback: (err: Error | null, data?: any, results?: any, params?: any, infos?: any) => void,
-    streamingV4Params?: any
-) {
+function vaultSignatureCb(err, authInfo, log, callback, streamingV4Params) {
     // vaultclient API guarantees that it returns:
     // - either `err`, an Error object with `code` and `message` properties set
     // - or `err == null` and `info` is an object with `message.code` and
@@ -30,38 +24,15 @@ function vaultSignatureCb(
     const info = authInfo.message.body;
     const userInfo = new AuthInfo(info.userInfo);
     const authorizationResults = info.authorizationResults;
-    const auditLog: { accountDisplayName: string, IAMdisplayName?: string } =
-        { accountDisplayName: userInfo.getAccountDisplayName() };
+    const auditLog = { accountDisplayName: userInfo.getAccountDisplayName() };
     const iamDisplayName = userInfo.getIAMdisplayName();
     if (iamDisplayName) {
         auditLog.IAMdisplayName = iamDisplayName;
     }
-    // @ts-ignore
     log.addDefaultFields(auditLog);
-    return callback(null, userInfo, authorizationResults, streamingV4Params, {
-        accountQuota: info.accountQuota || {},
-    });
+    return callback(null, userInfo, authorizationResults, streamingV4Params);
 }
 
-export type AuthV4RequestParams = {
-    version: 4;
-    log: Logger;
-    data: {
-        accessKey: string;
-        signatureFromRequest: string;
-        region: string;
-        stringToSign: string;
-        scopeDate: string;
-        authType: 'query' | 'header';
-        signatureVersion: string;
-        signatureAge?: number;
-        timestamp: number;
-        credentialScope: string;
-        securityToken: string;
-        algo: string;
-        log: Logger;
-    };
-};
 
 /**
  * Class that provides common authentication methods against different
@@ -69,62 +40,45 @@ export type AuthV4RequestParams = {
  * @class Vault
  */
 export default class Vault {
-    client: any;
-    implName: string;
-
+    client
+    implName
+    
     /**
      * @constructor
      * @param {object} client - authentication backend or vault client
      * @param {string} implName - implementation name for auth backend
      */
-    constructor(client: any, implName: string) {
+    constructor(client, implName) {
         this.client = client;
         this.implName = implName;
     }
     /**
      * authenticateV2Request
      *
-     * @param params - the authentication parameters as returned by
+     * @param {string} params - the authentication parameters as returned by
      *                          auth.extractParams
-     * @param params.version - shall equal 2
-     * @param params.data.accessKey - the user's accessKey
-     * @param params.data.signatureFromRequest - the signature read
+     * @param {number} params.version - shall equal 2
+     * @param {string} params.data.accessKey - the user's accessKey
+     * @param {string} params.data.signatureFromRequest - the signature read
      *                                                    from the request
-     * @param params.data.stringToSign - the stringToSign
-     * @param params.data.algo - the hashing algorithm used for the
+     * @param {string} params.data.stringToSign - the stringToSign
+     * @param {string} params.data.algo - the hashing algorithm used for the
      *                                    signature
-     * @param params.data.authType - the type of authentication (query
+     * @param {string} params.data.authType - the type of authentication (query
      *                                        or header)
-     * @param params.data.signatureVersion - the version of the
+     * @param {string} params.data.signatureVersion - the version of the
      *                                                signature (AWS or AWS4)
-     * @param [params.data.signatureAge] - the age of the signature in
+     * @param {number} [params.data.signatureAge] - the age of the signature in
      *                                              ms
-     * @param params.data.log - the logger object
+     * @param {string} params.data.log - the logger object
      * @param {RequestContext []} requestContexts - an array of RequestContext
      * instances which contain information for policy authorization check
-     * @param callback - callback with either error or user info
+     * @param {function} callback - callback with either error or user info
+     * @returns {undefined}
      */
-    authenticateV2Request(
-        params: {
-            version: 2;
-            log: Logger;
-            data: {
-                securityToken: string;
-                accessKey: string;
-                signatureFromRequest: string;
-                stringToSign: string;
-                algo: string;
-                authType: 'query' | 'header';
-                signatureVersion: string;
-                signatureAge?: number;
-                log: Logger;
-            };
-        },
-        requestContexts: any[],
-        callback: (err: Error | null, data?: any) => void
-    ) {
+    authenticateV2Request(params, requestContexts, callback) {
         params.log.debug('authenticating V2 request');
-        let serializedRCsArr: any;
+        let serializedRCsArr;
         if (requestContexts) {
             serializedRCsArr = requestContexts.map(rc => rc.serialize());
         }
@@ -134,48 +88,44 @@ export default class Vault {
             params.data.accessKey,
             {
                 algo: params.data.algo,
-                // @ts-ignore
                 reqUid: params.log.getSerializedUids(),
                 logger: params.log,
                 securityToken: params.data.securityToken,
                 requestContext: serializedRCsArr,
             },
-            (err: Error | null, userInfo?: any) => vaultSignatureCb(err, userInfo,
+            (err, userInfo) => vaultSignatureCb(err, userInfo,
                 params.log, callback),
         );
     }
 
     /** authenticateV4Request
-     * @param params - the authentication parameters as returned by
+     * @param {object} params - the authentication parameters as returned by
      *                          auth.extractParams
-     * @param params.version - shall equal 4
-     * @param params.data.log - the logger object
-     * @param params.data.accessKey - the user's accessKey
-     * @param params.data.signatureFromRequest - the signature read
+     * @param {number} params.version - shall equal 4
+     * @param {string} params.data.log - the logger object
+     * @param {string} params.data.accessKey - the user's accessKey
+     * @param {string} params.data.signatureFromRequest - the signature read
      *                                                    from the request
-     * @param params.data.region - the AWS region
-     * @param params.data.stringToSign - the stringToSign
-     * @param params.data.scopeDate - the timespan to allow the request
-     * @param params.data.authType - the type of authentication (query
+     * @param {string} params.data.region - the AWS region
+     * @param {string} params.data.stringToSign - the stringToSign
+     * @param {string} params.data.scopeDate - the timespan to allow the request
+     * @param {string} params.data.authType - the type of authentication (query
      *                                        or header)
-     * @param params.data.signatureVersion - the version of the
+     * @param {string} params.data.signatureVersion - the version of the
      *                                                signature (AWS or AWS4)
-     * @param params.data.signatureAge - the age of the signature in ms
-     * @param params.data.timestamp - signaure timestamp
-     * @param params.credentialScope - credentialScope for signature
+     * @param {number} params.data.signatureAge - the age of the signature in ms
+     * @param {number} params.data.timestamp - signaure timestamp
+     * @param {string} params.credentialScope - credentialScope for signature
      * @param {RequestContext [] | null} requestContexts -
      * an array of RequestContext or null if authenticaiton of a chunk
      * in streamingv4 auth
      * instances which contain information for policy authorization check
-     * @param callback - callback with either error or user info
+     * @param {function} callback - callback with either error or user info
+     * @return {undefined}
     */
-    authenticateV4Request(
-        params: AuthV4RequestParams,
-        requestContexts: any[] | null,
-        callback: (err: Error | null, data?: any) => void
-    ) {
+    authenticateV4Request(params, requestContexts, callback) {
         params.log.debug('authenticating V4 request');
-        let serializedRCs: any;
+        let serializedRCs;
         if (requestContexts) {
             serializedRCs = requestContexts.map(rc => rc.serialize());
         }
@@ -193,39 +143,31 @@ export default class Vault {
             params.data.region,
             params.data.scopeDate,
             {
-                // @ts-ignore
                 reqUid: params.log.getSerializedUids(),
                 logger: params.log,
                 securityToken: params.data.securityToken,
                 requestContext: serializedRCs,
             },
-            (err: Error | null, userInfo?: any) => vaultSignatureCb(err, userInfo,
+            (err, userInfo) => vaultSignatureCb(err, userInfo,
                 params.log, callback, streamingV4Params),
         );
     }
 
     /** getCanonicalIds -- call Vault to get canonicalIDs based on email
      * addresses
-     * @param emailAddresses - list of emailAddresses
-     * @param log - log object
-     * @param callback - callback with either error or an array
+     * @param {array} emailAddresses - list of emailAddresses
+     * @param {object} log - log object
+     * @param {function} callback - callback with either error or an array
      * of objects with each object containing the canonicalID and emailAddress
      * of an account as properties
+     * @return {undefined}
     */
-    getCanonicalIds(
-        emailAddresses: string[],
-        log: Logger,
-        callback: (
-            err: Error | null,
-            data?: { canonicalID: string; email: string }[]
-        ) => void
-    ) {
+    getCanonicalIds(emailAddresses, log, callback) {
         log.trace('getting canonicalIDs from Vault based on emailAddresses',
             { emailAddresses });
         this.client.getCanonicalIds(emailAddresses,
-            // @ts-ignore
             { reqUid: log.getSerializedUids() },
-            (err: Error | null, info?: any) => {
+            (err, info) => {
                 if (err) {
                     log.debug('received error message from auth provider',
                         { errorMessage: err });
@@ -233,17 +175,17 @@ export default class Vault {
                 }
                 const infoFromVault = info.message.body;
                 log.trace('info received from vault', { infoFromVault });
-                const foundIds: { canonicalID: string; email: string }[] = [];
+                const foundIds = [];
                 for (let i = 0; i < Object.keys(infoFromVault).length; i++) {
                     const key = Object.keys(infoFromVault)[i];
                     if (infoFromVault[key] === 'WrongFormat'
                     || infoFromVault[key] === 'NotFound') {
                         return callback(errors.UnresolvableGrantByEmailAddress);
                     }
-                    foundIds.push({
-                        email: key,
-                        canonicalID: infoFromVault[key],
-                    })
+                    const obj = {};
+                    obj.email = key;
+                    obj.canonicalID = infoFromVault[key];
+                    foundIds.push(obj);
                 }
                 return callback(null, foundIds);
             });
@@ -251,22 +193,18 @@ export default class Vault {
 
     /** getEmailAddresses -- call Vault to get email addresses based on
      * canonicalIDs
-     * @param canonicalIDs - list of canonicalIDs
-     * @param log - log object
-     * @param callback - callback with either error or an object
+     * @param {array} canonicalIDs - list of canonicalIDs
+     * @param {object} log - log object
+     * @param {function} callback - callback with either error or an object
      * with canonicalID keys and email address values
+     * @return {undefined}
     */
-    getEmailAddresses(
-        canonicalIDs: string[],
-        log: Logger,
-        callback: (err: Error | null, data?: { [key: string]: any }) => void
-    ) {
+    getEmailAddresses(canonicalIDs, log, callback) {
         log.trace('getting emailAddresses from Vault based on canonicalIDs',
             { canonicalIDs });
         this.client.getEmailAddresses(canonicalIDs,
-            // @ts-ignore
             { reqUid: log.getSerializedUids() },
-            (err: Error | null, info?: any) => {
+            (err, info) => {
                 if (err) {
                     log.debug('received error message from vault',
                         { errorMessage: err });
@@ -289,22 +227,18 @@ export default class Vault {
 
     /** getAccountIds -- call Vault to get accountIds based on
      * canonicalIDs
-     * @param canonicalIDs - list of canonicalIDs
-     * @param log - log object
-     * @param callback - callback with either error or an object
+     * @param {array} canonicalIDs - list of canonicalIDs
+     * @param {object} log - log object
+     * @param {function} callback - callback with either error or an object
      * with canonicalID keys and accountId values
+     * @return {undefined}
     */
-    getAccountIds(
-        canonicalIDs: string[],
-        log: Logger,
-        callback: (err: Error | null, data?: { [key: string]: string }) => void
-    ) {
+    getAccountIds(canonicalIDs, log, callback) {
         log.trace('getting accountIds from Vault based on canonicalIDs',
             { canonicalIDs });
         this.client.getAccountIds(canonicalIDs,
-            // @ts-expect-error
             { reqUid: log.getSerializedUids() },
-            (err: Error | null, info?: any) => {
+            (err, info) => {
                 if (err) {
                     log.debug('received error message from vault',
                         { errorMessage: err });
@@ -337,19 +271,14 @@ export default class Vault {
      * @param {object} log - log object
      * @param {function} callback - callback with either error or an array
      * of authorization results
+     * @return {undefined}
     */
-    checkPolicies(
-        requestContextParams: any[],
-        userArn: string,
-        log: Logger,
-        callback: (err: Error | null, data?: any[]) => void
-    ) {
+    checkPolicies(requestContextParams, userArn, log, callback) {
         log.trace('sending request context params to vault to evaluate' +
         'policies');
         this.client.checkPolicies(requestContextParams, userArn, {
-            // @ts-ignore
             reqUid: log.getSerializedUids(),
-        }, (err: Error | null, info?: any) => {
+        }, (err, info) => {
             if (err) {
                 log.debug('received error message from auth provider',
                     { error: err });
@@ -360,14 +289,13 @@ export default class Vault {
         });
     }
 
-    checkHealth(log: Logger, callback: (err: Error | null, data?: any) => void) {
+    checkHealth(log, callback) {
         if (!this.client.healthcheck) {
             const defResp = {};
             defResp[this.implName] = { code: 200, message: 'OK' };
             return callback(null, defResp);
         }
-        // @ts-ignore
-        return this.client.healthcheck(log.getSerializedUids(), (err: Error | null, obj?: any) => {
+        return this.client.healthcheck(log.getSerializedUids(), (err, obj) => {
             const respBody = {};
             if (err) {
                 log.debug(`error from ${this.implName}`, { error: err });
@@ -386,19 +314,4 @@ export default class Vault {
             return callback(null, respBody);
         });
     }
-
-    report(log: Logger, callback: (err: Error | null, data?: any) => void) {
-        // call the report function of the client
-        if (!this.client.report) {
-            return callback(null, {});
-        }
-        // @ts-ignore
-        return this.client.report(log.getSerializedUids(), (err: Error | null, obj?: any) => {
-            if (err) {
-                log.debug(`error from ${this.implName}`, { error: err });
-                return callback(err);
-            }
-            return callback(null, obj);
-        });
-    }
 }

lib/auth/auth.ts

@@ -1,5 +1,4 @@
 import * as crypto from 'crypto';
-import { Logger } from 'werelogs';
 import errors from '../errors';
 import * as queryString from 'querystring';
 import AuthInfo from './AuthInfo';
@@ -11,13 +10,13 @@ import constructStringToSignV4 from './v4/constructStringToSign';
 import { convertUTCtoISO8601 } from './v4/timeUtils';
 import * as vaultUtilities from './backends/in_memory/vaultUtilities';
 import * as inMemoryBackend from './backends/in_memory/Backend';
-import baseBackend from './backends/base';
-import chainBackend from './backends/ChainBackend';
 import validateAuthConfig from './backends/in_memory/validateAuthConfig';
 import AuthLoader from './backends/in_memory/AuthLoader';
 import Vault from './Vault';
+import baseBackend from './backends/base';
+import chainBackend from './backends/ChainBackend';
 
-let vault: Vault | null = null;
+let vault = null;
 const auth = {};
 const checkFunctions = {
     v2: {
@@ -34,7 +33,7 @@ const checkFunctions = {
 // 'All Users Group' so use this group as the canonicalID for the publicUser
 const publicUserInfo = new AuthInfo({ canonicalID: constants.publicId });
 
-function setAuthHandler(handler: Vault) {
+function setAuthHandler(handler) {
     vault = handler;
     return auth;
 }
@@ -42,30 +41,25 @@ function setAuthHandler(handler: Vault) {
 /**
  * This function will check validity of request parameters to authenticate
  *
- * @param request - Http request object
- * @param log - Logger object
- * @param awsService - Aws service related
- * @param data - Parameters from queryString parsing or body of
+ * @param {Http.Request} request - Http request object
+ * @param {object} log - Logger object
+ * @param {string} awsService - Aws service related
+ * @param {object} data - Parameters from queryString parsing or body of
  *      POST request
  *
- * @return ret
- * @return ret.err - arsenal.errors object if any error was found
- * @return ret.params - auth parameters to use later on for signature
+ * @return {object} ret
+ * @return {object} ret.err - arsenal.errors object if any error was found
+ * @return {object} ret.params - auth parameters to use later on for signature
  *                               computation and check
- * @return ret.params.version - the auth scheme version
+ * @return {object} ret.params.version - the auth scheme version
  *                                       (undefined, 2, 4)
- * @return ret.params.data - the auth scheme's specific data
+ * @return {object} ret.params.data - the auth scheme's specific data
  */
-function extractParams(
-    request: any,
-    log: Logger,
-    awsService: string,
-    data: { [key: string]: string }
-) {
+function extractParams(request, log, awsService, data) {
     log.trace('entered', { method: 'Arsenal.auth.server.extractParams' });
     const authHeader = request.headers.authorization;
-    let version: 'v2' |'v4' | null = null;
-    let method: 'query' | 'headers' | null = null;
+    let version = null;
+    let method = null;
 
     // Identify auth version and method to dispatch to the right check function
     if (authHeader) {
@@ -77,8 +71,9 @@ function extractParams(
         } else if (authHeader.startsWith('AWS4')) {
             version = 'v4';
         } else {
-            log.trace('invalid authorization security header',
-                { header: authHeader });
+            log.trace('invalid authorization security header', {
+                header: authHeader,
+            });
             return { err: errors.AccessDenied };
         }
     } else if (data.Signature) {
@@ -92,8 +87,10 @@ function extractParams(
     // Here, either both values are set, or none is set
     if (version !== null && method !== null) {
         if (!checkFunctions[version] || !checkFunctions[version][method]) {
-            log.trace('invalid auth version or method',
-                { version, authMethod: method });
+            log.trace('invalid auth version or method', {
+                version,
+                authMethod: method,
+            });
             return { err: errors.NotImplemented };
         }
         log.trace('identified auth method', { version, authMethod: method });
@@ -108,21 +105,16 @@ function extractParams(
 /**
  * This function will check validity of request parameters to authenticate
  *
- * @param request - Http request object
- * @param log - Logger object
- * @param cb - the callback
- * @param awsService - Aws service related
+ * @param {Http.Request} request - Http request object
+ * @param {object} log - Logger object
+ * @param {function} cb - the callback
+ * @param {string} awsService - Aws service related
  * @param {RequestContext[] | null} requestContexts - array of RequestContext
  * or null if no requestContexts to be sent to Vault (for instance,
  * in multi-object delete request)
+ * @return {undefined}
  */
-function doAuth(
-    request: any,
-    log: Logger,
-    cb: (err: Error | null, data?: any) => void,
-    awsService: string,
-    requestContexts: any[] | null
-) {
+function doAuth(request, log, cb, awsService, requestContexts) {
     const res = extractParams(request, log, awsService, request.query);
     if (res.err) {
         return cb(res.err);
@@ -131,30 +123,27 @@ function doAuth(
     }
     if (requestContexts) {
         requestContexts.forEach((requestContext) => {
-            const { params } = res
-            if ('data' in params) {
-                const { data } = params
-                requestContext.setAuthType(data.authType);
-                requestContext.setSignatureVersion(data.signatureVersion);
-                requestContext.setSecurityToken(data.securityToken);
-                if ('signatureAge' in data) {
-                    requestContext.setSignatureAge(data.signatureAge);
-                }
-            }
+            requestContext.setAuthType(res.params.data.authType);
+            requestContext.setSignatureVersion(
+                res.params.data.signatureVersion
+            );
+            requestContext.setSignatureAge(res.params.data.signatureAge);
+            requestContext.setSecurityToken(res.params.data.securityToken);
         });
     }
 
     // Corner cases managed, we're left with normal auth
-    // TODO What's happening here?
-    // @ts-ignore
     res.params.log = log;
     if (res.params.version === 2) {
-        // @ts-ignore
-        return vault!.authenticateV2Request(res.params, requestContexts, cb);
+        return vault.authenticateV2Request(res.params, requestContexts, cb);
     }
     if (res.params.version === 4) {
-        // @ts-ignore
-        return vault!.authenticateV4Request(res.params, requestContexts, cb);
+        return vault.authenticateV4Request(
+            res.params,
+            requestContexts,
+            cb,
+            awsService
+        );
     }
 
     log.error('authentication method not found', {
@@ -163,43 +152,28 @@ function doAuth(
     return cb(errors.InternalError);
 }
 
-/**
- * This function will generate a version 4 content-md5 header
- * It looks at the request path to determine what kind of header encoding is required
- *
- * @param path - the request path
- * @param payload - the request payload to hash
- */
-function generateContentMD5Header(
-    path: string,
-    payload: string,
-) {
-    const encoding = path && path.startsWith('/_/backbeat/') ? 'hex' : 'base64';
-    return crypto.createHash('md5').update(payload, 'binary').digest(encoding);
-}
 /**
  * This function will generate a version 4 header
  *
- * @param request - Http request object
- * @param data - Parameters from queryString parsing or body of
+ * @param {Http.Request} request - Http request object
+ * @param {object} data - Parameters from queryString parsing or body of
  *                        POST request
- * @param accessKey - the accessKey
- * @param secretKeyValue - the secretKey
- * @param awsService - Aws service related
- * @param [proxyPath] - path that gets proxied by reverse proxy
- * @param [sessionToken] - security token if the access/secret keys
+ * @param {string} accessKey - the accessKey
+ * @param {string} secretKeyValue - the secretKey
+ * @param {string} awsService - Aws service related
+ * @param {sting} [proxyPath] - path that gets proxied by reverse proxy
+ * @param {string} [sessionToken] - security token if the access/secret keys
  *                                are temporary credentials from STS
- * @param [payload] - body of the request if any
+ * @return {undefined}
  */
 function generateV4Headers(
-    request: any,
-    data: { [key: string]: string },
-    accessKey: string,
-    secretKeyValue: string,
-    awsService: string,
-    proxyPath?: string,
-    sessionToken?: string,
-    payload?: string,
+    request,
+    data,
+    accessKey,
+    secretKeyValue,
+    awsService,
+    proxyPath,
+    sessionToken
 ) {
     Object.assign(request, { headers: {} });
     const amzDate = convertUTCtoISO8601(Date.now());
@@ -207,23 +181,23 @@ function generateV4Headers(
     const scopeDate = amzDate.slice(0, amzDate.indexOf('T'));
     const region = 'us-east-1';
     const service = awsService || 'iam';
-    const credentialScope =
-        `${scopeDate}/${region}/${service}/aws4_request`;
+    const credentialScope = `${scopeDate}/${region}/${service}/aws4_request`;
     const timestamp = amzDate;
     const algorithm = 'AWS4-HMAC-SHA256';
 
-    payload = payload || '';
+    let payload = '';
     if (request.method === 'POST') {
-        payload = queryString.stringify(data, undefined, undefined, {
+        payload = queryString.stringify(data, null, null, {
             encodeURIComponent,
         });
     }
-    const payloadChecksum = crypto.createHash('sha256')
-        .update(payload, 'binary').digest('hex');
+    const payloadChecksum = crypto
+        .createHash('sha256')
+        .update(payload, 'binary')
+        .digest('hex');
     request.setHeader('host', request._headers.host);
     request.setHeader('x-amz-date', amzDate);
     request.setHeader('x-amz-content-sha256', payloadChecksum);
-    request.setHeader('content-md5', generateContentMD5Header(request.path, payload));
 
     if (sessionToken) {
         request.setHeader('x-amz-security-token', sessionToken);
@@ -231,35 +205,49 @@ function generateV4Headers(
 
     Object.assign(request.headers, request._headers);
     const signedHeaders = Object.keys(request._headers)
-        .filter(headerName =>
-            headerName.startsWith('x-amz-')
-            || headerName.startsWith('x-scal-')
-            || headerName === 'content-md5'
-            || headerName === 'host',
-        ).sort().join(';');
-    const params = { request, signedHeaders, payloadChecksum,
-        credentialScope, timestamp, query: data,
-        awsService: service, proxyPath };
+        .filter(
+            (headerName) =>
+                headerName.startsWith('x-amz-') ||
+                headerName.startsWith('x-scal-') ||
+                headerName === 'host'
+        )
+        .sort()
+        .join(';');
+    const params = {
+        request,
+        signedHeaders,
+        payloadChecksum,
+        credentialScope,
+        timestamp,
+        query: data,
+        awsService: service,
+        proxyPath,
+    };
     const stringToSign = constructStringToSignV4(params);
-    const signingKey = vaultUtilities.calculateSigningKey(secretKeyValue,
+    const signingKey = vaultUtilities.calculateSigningKey(
+        secretKeyValue,
         region,
         scopeDate,
-        service);
-    const signature = crypto.createHmac('sha256', signingKey)
-        .update(stringToSign as string, 'binary').digest('hex');
-    const authorizationHeader = `${algorithm} Credential=${accessKey}` +
+        service
+    );
+    const signature = crypto
+        .createHmac('sha256', signingKey)
+        .update(stringToSign, 'binary')
+        .digest('hex');
+    const authorizationHeader =
+        `${algorithm} Credential=${accessKey}` +
         `/${credentialScope}, SignedHeaders=${signedHeaders}, ` +
         `Signature=${signature}`;
     request.setHeader('authorization', authorizationHeader);
     Object.assign(request, { headers: {} });
 }
 
-export const server = { extractParams, doAuth }
-export const client = { generateV4Headers, constructStringToSignV2 }
-export const inMemory = { backend: inMemoryBackend, validateAuthConfig, AuthLoader }
-export const backends = { baseBackend, chainBackend }
-export {
-    setAuthHandler as setHandler,
-    AuthInfo,
-    Vault
-}
+export const server = { extractParams, doAuth };
+export const client = { generateV4Headers, constructStringToSignV2 };
+export const inMemory = {
+    backend: inMemoryBackend,
+    validateAuthConfig,
+    AuthLoader,
+};
+export const backends = { baseBackend, chainBackend };
+export { setAuthHandler as setHandler, AuthInfo, Vault };

lib/auth/backends/ChainBackend.ts

@@ -1,5 +1,6 @@
 import assert from 'assert';
 import async from 'async';
+
 import errors from '../../errors';
 import BaseBackend from './base';
 
@@ -28,70 +29,55 @@ export default class ChainBackend extends BaseBackend {
             typeof client.getCanonicalIds === 'function' &&
             typeof client.getEmailAddresses === 'function' &&
             typeof client.checkPolicies === 'function' &&
-            typeof client.healthcheck === 'function',
+            typeof client.healthcheck === 'function'
         ), 'invalid client: missing required auth backend methods');
         this._clients = clients;
     }
 
-
     /*
      * try task against each client for one to be successful
      */
-    _tryEachClient(task: any, cb: any) {
-        // @ts-ignore
+    _tryEachClient(task, cb) {
         async.tryEach(this._clients.map(client => done => task(client, done)), cb);
     }
 
     /*
      * apply task to all clients
      */
-    _forEachClient(task: any, cb: any) {
+    _forEachClient(task, cb) {
         async.map(this._clients, task, cb);
     }
 
-    verifySignatureV2(
-        stringToSign: string,
-        signatureFromRequest: string,
-        accessKey: string,
-        options: any,
-        callback: any,
-      ) {
+    verifySignatureV2(stringToSign, signatureFromRequest, accessKey, options, callback) {
         this._tryEachClient((client, done) => client.verifySignatureV2(
             stringToSign,
             signatureFromRequest,
             accessKey,
             options,
-            done,
+            done
         ), callback);
     }
 
-    verifySignatureV4(
-      stringToSign: string,
-      signatureFromRequest: string,
-      accessKey: string,
-      region: string,
-      scopeDate: string,
-      options: any,
-      callback: any,
-    ) {
+    verifySignatureV4(stringToSign, signatureFromRequest, accessKey, region, scopeDate, options, callback) {
         this._tryEachClient((client, done) => client.verifySignatureV4(
             stringToSign,
-            signatureFromRequest,
-            accessKey,
-            region,
-            scopeDate,
-            options,
-            done,
+                signatureFromRequest,
+                accessKey,
+                region,
+                scopeDate,
+                options,
+                done
         ), callback);
     }
 
-    static _mergeObjects(objectResponses: any) {
+    static _mergeObjects(objectResponses) {
         return objectResponses.reduce(
             (retObj, resObj) => Object.assign(retObj, resObj.message.body),
-            {});
+            {}
+        );
     }
 
-    getCanonicalIds(emailAddresses: string[], options: any, callback: any) {
+    getCanonicalIds(emailAddresses, options, callback) {
         this._forEachClient(
             (client, done) => client.getCanonicalIds(emailAddresses, options, done),
             (err, res) => {
@@ -104,10 +90,11 @@ export default class ChainBackend extends BaseBackend {
                         body: ChainBackend._mergeObjects(res),
                     },
                 });
-            });
+            }
+        );
     }
 
-    getEmailAddresses(canonicalIDs: string[], options: any, callback: any) {
+    getEmailAddresses(canonicalIDs, options, callback) {
         this._forEachClient(
             (client, done) => client.getEmailAddresses(canonicalIDs, options, done),
             (err, res) => {
@@ -119,51 +106,38 @@ export default class ChainBackend extends BaseBackend {
                         body: ChainBackend._mergeObjects(res),
                     },
                 });
-            });
+            }
+        );
     }
 
     /*
      * merge policy responses into a single message
      */
-    static _mergePolicies(policyResponses: any) {
-        const policyMap: any = {};
+    static _mergePolicies(policyResponses) {
+        const policyMap = {};
 
         policyResponses.forEach(resp => {
             if (!resp.message || !Array.isArray(resp.message.body)) {
                 return;
             }
 
-            const check = (policy) => {
-                const key = (policy.arn || '') + (policy.versionId || '') + (policy.action || '');
+            resp.message.body.forEach(policy => {
+                const key = (policy.arn || '') + (policy.versionId || '');
                 if (!policyMap[key] || !policyMap[key].isAllowed) {
                     policyMap[key] = policy;
                 }
                 // else is duplicate policy
-            };
-
-            resp.message.body.forEach(policy => {
-                if (Array.isArray(policy)) {
-                    policy.forEach(authResult => check(authResult));
-                } else {
-                    check(policy);
-                }
             });
         });
 
-        return Object.keys(policyMap).map(key => {
-            const policyRes: any = { isAllowed: policyMap[key].isAllowed };
+        return Object.keys(policyMap).map((key) => {
+            const policyRes = { isAllowed: policyMap[key].isAllowed };
             if (policyMap[key].arn !== '') {
                 policyRes.arn = policyMap[key].arn;
             }
             if (policyMap[key].versionId) {
                 policyRes.versionId = policyMap[key].versionId;
             }
-            if (policyMap[key].isImplicit !== undefined) {
-                policyRes.isImplicit = policyMap[key].isImplicit;
-            }
-            if (policyMap[key].action) {
-                policyRes.action = policyMap[key].action;
-            }
             return policyRes;
         });
     }
@@ -176,12 +150,12 @@ export default class ChainBackend extends BaseBackend {
                 message: string,
             } }
      */
-    checkPolicies(requestContextParams: any, userArn: string, options: any, callback: any) {
+    checkPolicies(requestContextParams, userArn, options, callback) {
         this._forEachClient((client, done) => client.checkPolicies(
             requestContextParams,
             userArn,
             options,
-            done,
+            done
         ), (err, res) => {
             if (err) {
                 return callback(err);
@@ -194,40 +168,22 @@ export default class ChainBackend extends BaseBackend {
         });
     }
 
-    healthcheck(reqUid: string, callback: any) {
+    healthcheck(reqUid, callback) {
         this._forEachClient((client, done) =>
             client.healthcheck(reqUid, (err, res) => done(null, {
                 error: !!err ? err : null,
                 status: res,
-            }),
+            })
             ), (err, res) => {
             if (err) {
                 return callback(err);
             }
 
-            const isError = res.some(results => !!results.error);
+            const isError = res.some((results) => !!results.error);
             if (isError) {
                 return callback(errors.InternalError, res);
             }
             return callback(null, res);
         });
     }
-
-    report(reqUid: string, callback: any) {
-        this._forEachClient((client, done) =>
-            client.report(reqUid, done),
-            (err, res) => {
-                if (err) {
-                    return callback(err);
-                }
-                const mergedRes = res.reduce((acc, val) => {
-                    Object.keys(val).forEach(k => {
-                        acc[k] = val[k];
-                    });
-                    return acc;
-                }, {});
-
-                return callback(null, mergedRes);
-            });
-    }
 }

lib/auth/backends/base.ts

@@ -6,91 +6,79 @@ import errors from '../../errors';
  * @class BaseBackend
  */
 export default class BaseBackend {
-    service: string;
-
+    service
+    
     /**
      * @constructor
      * @param {string} service - service identifer for construction arn
      */
-    constructor(service: string) {
+    constructor(service) {
         this.service = service;
     }
 
     /** verifySignatureV2
-    * @param stringToSign - string to sign built per AWS rules
-    * @param signatureFromRequest - signature sent with request
-    * @param accessKey - account accessKey
-    * @param options - contains algorithm (SHA1 or SHA256)
-    * @param callback - callback with either error or user info
-    * @return calls callback
+    * @param {string} stringToSign - string to sign built per AWS rules
+    * @param {string} signatureFromRequest - signature sent with request
+    * @param {string} accessKey - account accessKey
+    * @param {object} options - contains algorithm (SHA1 or SHA256)
+    * @param {function} callback - callback with either error or user info
+    * @return {function} calls callback
     */
-    verifySignatureV2(
-        stringToSign: string,
-        signatureFromRequest: string,
-        accessKey: string,
-        options: any,
-        callback: any
-    ) {
+    verifySignatureV2(stringToSign, signatureFromRequest,
+        accessKey, options, callback) {
         return callback(errors.AuthMethodNotImplemented);
     }
 
 
     /** verifySignatureV4
-     * @param stringToSign - string to sign built per AWS rules
-     * @param signatureFromRequest - signature sent with request
-     * @param accessKey - account accessKey
-     * @param region - region specified in request credential
-     * @param scopeDate - date specified in request credential
-     * @param options - options to send to Vault
+     * @param {string} stringToSign - string to sign built per AWS rules
+     * @param {string} signatureFromRequest - signature sent with request
+     * @param {string} accessKey - account accessKey
+     * @param {string} region - region specified in request credential
+     * @param {string} scopeDate - date specified in request credential
+     * @param {object} options - options to send to Vault
      * (just contains reqUid for logging in Vault)
-     * @param callback - callback with either error or user info
-     * @return calls callback
+     * @param {function} callback - callback with either error or user info
+     * @return {function} calls callback
      */
-    verifySignatureV4(
-        stringToSign: string,
-        signatureFromRequest: string,
-        accessKey: string,
-        region: string,
-        scopeDate: string,
-        options: any,
-        callback: any
-    ) {
+    verifySignatureV4(stringToSign, signatureFromRequest, accessKey,
+        region, scopeDate, options, callback) {
         return callback(errors.AuthMethodNotImplemented);
     }
 
     /**
      * Gets canonical ID's for a list of accounts
      * based on email associated with account
-     * @param emails - list of email addresses
-     * @param options - to send log id to vault
-     * @param callback - callback to calling function
-     * @returns callback with either error or
+     * @param {array} emails - list of email addresses
+     * @param {object} options - to send log id to vault
+     * @param {function} callback - callback to calling function
+     * @returns {function} callback with either error or
      * object with email addresses as keys and canonical IDs
      * as values
      */
-    getCanonicalIds(emails: string[], options: any, callback: any) {
+    getCanonicalIds(emails, options, callback) {
         return callback(errors.AuthMethodNotImplemented);
     }
 
     /**
      * Gets email addresses (referred to as diplay names for getACL's)
      * for a list of accounts based on canonical IDs associated with account
-     * @param canonicalIDs - list of canonicalIDs
-     * @param options - to send log id to vault
-     * @param callback - callback to calling function
-     * @returns callback with either error or
+     * @param {array} canonicalIDs - list of canonicalIDs
+     * @param {object} options - to send log id to vault
+     * @param {function} callback - callback to calling function
+     * @returns {function} callback with either error or
      * an object from Vault containing account canonicalID
      * as each object key and an email address as the value (or "NotFound")
      */
-    getEmailAddresses(canonicalIDs: string[], options: any, callback: any) {
+    getEmailAddresses(canonicalIDs, options, callback) {
         return callback(errors.AuthMethodNotImplemented);
     }
 
-    checkPolicies(requestContextParams: any, userArn: string, options: any, callback: any) {
+    checkPolicies(requestContextParams, userArn, options, callback) {
         return callback(null, { message: { body: [] } });
     }
 
-    healthcheck(reqUid: string, callback: any) {
+    healthcheck(reqUid, callback) {
         return callback(null, { code: 200, message: 'OK' });
     }
 }

lib/auth/backends/in_memory/AuthLoader.ts

@@ -1,204 +1,245 @@
 import * as fs from 'fs';
 import glob from 'simple-glob';
-import joi from 'joi';
+import joi from '@hapi/joi';
 import werelogs from 'werelogs';
-import * as types from './types';
-import { Account, Accounts } from './types';
+
 import ARN from '../../../models/ARN';
 
-/** Load authentication information from files or pre-loaded account objects */
+/**
+ * Load authentication information from files or pre-loaded account
+ * objects
+ *
+ * @class AuthLoader
+ */
 export default class AuthLoader {
-    #log: werelogs.Logger;
-    #authData: Accounts;
-    #isValid: 'waiting-for-validation' | 'valid' | 'invalid';
+    _log
+    _authData
+    _isValid
+    _joiKeysValidator
+    _joiValidator
 
-    constructor(logApi: { Logger: typeof werelogs.Logger } = werelogs) {
-        this.#log = new logApi.Logger('S3');
-        this.#authData = { accounts: [] };
-        this.#isValid = 'waiting-for-validation';
+    constructor(logApi) {
+        this._log = new (logApi || werelogs).Logger('S3');
+        this._authData = { accounts: [] };
+        // null: unknown validity, true/false: valid or invalid
+        this._isValid = null;
+
+        this._joiKeysValidator = joi
+            .array()
+            .items({
+                access: joi.string().required(),
+                secret: joi.string().required(),
+            })
+            .required();
+
+        const accountsJoi = joi
+            .array()
+            .items({
+                name: joi.string().required(),
+                email: joi.string().email().required(),
+                arn: joi.string().required(),
+                canonicalID: joi.string().required(),
+                shortid: joi
+                    .string()
+                    .regex(/^[0-9]{12}$/)
+                    .required(),
+                keys: this._joiKeysValidator,
+                // backward-compat
+                users: joi.array(),
+            })
+            .required()
+            .unique('arn')
+            .unique('email')
+            .unique('canonicalID');
+        this._joiValidator = joi.object({ accounts: accountsJoi });
     }
 
-    /** Add one or more accounts to the authentication info */
-    addAccounts(authData: Accounts, filePath?: string) {
-        const isValid = this.#isAuthDataValid(authData, filePath);
+    /**
+     * add one or more accounts to the authentication info
+     *
+     * @param {object} authData - authentication data
+     * @param {object[]} authData.accounts - array of account data
+     * @param {string} authData.accounts[].name - account name
+     * @param {string} authData.accounts[].email: email address
+     * @param {string} authData.accounts[].arn: account ARN,
+     *   e.g. 'arn:aws:iam::123456789012:root'
+     * @param {string} authData.accounts[].canonicalID account
+     *   canonical ID
+     * @param {string} authData.accounts[].shortid account ID number,
+     *   e.g. '123456789012'
+     * @param {object[]} authData.accounts[].keys array of
+     *   access/secret keys
+     * @param {object[]} authData.accounts[].keys[].access access key
+     * @param {object[]} authData.accounts[].keys[].secret secret key
+     * @param {string} [filePath] - optional file path info for
+     *   logging purpose
+     * @return {undefined}
+     */
+    addAccounts(authData, filePath: string) {
+        const isValid = this._validateData(authData, filePath);
         if (isValid) {
-            this.#authData.accounts = [
-                ...this.#authData.accounts,
-                ...authData.accounts,
-            ];
+            this._authData.accounts = this._authData.accounts.concat(
+                authData.accounts
+            );
             // defer validity checking when getting data to avoid
             // logging multiple times the errors (we need to validate
             // all accounts at once to detect duplicate values)
-            if (this.#isValid === 'valid') {
-                this.#isValid = 'waiting-for-validation';
+            if (this._isValid) {
+                this._isValid = null;
             }
         } else {
-            this.#isValid = 'invalid';
+            this._isValid = false;
         }
     }
 
     /**
-     * Add account information from a file. Use { legacy: false } as an option
-     *  to use the new, Promise-based version.
+     * add account information from a file
      *
-     * @param filePath - file path containing JSON
+     * @param {string} filePath - file path containing JSON
      *   authentication info (see {@link addAccounts()} for format)
+     * @return {undefined}
      */
-    addFile(filePath: string, options: { legacy: false }): Promise<void>;
-    /** @deprecated Please use Promise-version instead. */
-    addFile(filePath: string, options?: { legacy: true }): void;
-    addFile(filePath: string, options = { legacy: true }) {
-        // On deprecation, remove the legacy part and keep the promises.
-        const readFunc: any = options.legacy ? fs.readFileSync : fs.promises.readFile;
-        const readResult = readFunc(filePath, 'utf8') as Promise<string> | string;
-        const prom = Promise.resolve(readResult).then((data) => {
-            const authData = JSON.parse(data);
-            this.addAccounts(authData, filePath);
-        });
-        return options.legacy ? undefined : prom;
+    addFile(filePath: string) {
+        const authData = JSON.parse(fs.readFileSync(filePath));
+        this.addAccounts(authData, filePath);
     }
 
     /**
-     * Add account information from a filesystem path
+     * add account information from a filesystem path
      *
-     * @param globPattern - filesystem glob pattern,
+     * @param {string|string[]} globPattern - filesystem glob pattern,
      *   can be a single string or an array of glob patterns. Globs
      *   can be simple file paths or can contain glob matching
      *   characters, like '/a/b/*.json'. The matching files are
      *   individually loaded as JSON and accounts are added. See
      *   {@link addAccounts()} for JSON format.
+     * @return {undefined}
      */
     addFilesByGlob(globPattern: string | string[]) {
-        // FIXME switch glob to async version
         const files = glob(globPattern);
         files.forEach((filePath) => this.addFile(filePath));
     }
 
     /**
-     * Perform validation on authentication info previously
+     * perform validation on authentication info previously
      * loaded. Note that it has to be done on the entire set after an
      * update to catch duplicate account IDs or access keys.
+     *
+     * @return {boolean} true if authentication info is valid
+     *                   false otherwise
      */
     validate() {
-        if (this.#isValid === 'waiting-for-validation') {
-            const isValid = this.#isAuthDataValid(this.#authData);
-            this.#isValid = isValid ? 'valid' : 'invalid';
+        if (this._isValid === null) {
+            this._isValid = this._validateData(this._authData);
         }
-        return this.#isValid === 'valid';
+        return this._isValid;
     }
 
     /**
-     * Get authentication info as a plain JS object containing all accounts
+     * get authentication info as a plain JS object containing all accounts
      * under the "accounts" attribute, with validation.
+     *
+     * @return {object|null} the validated authentication data
+     *                       null if invalid
      */
-    get data() {
-        return this.validate() ? this.#authData : null;
+    getData() {
+        return this.validate() ? this._authData : null;
     }
 
-    /** backward-compat: ignore arn if starts with 'aws:' and log a warning */
-    #isNotLegacyAWSARN(account: Account, filePath?: string) {
-        if (account.arn.startsWith('aws:')) {
-            const { name: accountName, arn: accountArn } = account;
-            this.#log.error(
-                'account must have a valid AWS ARN, legacy examples ' +
-                    "starting with 'aws:' are not supported anymore. " +
-                    'Please convert to a proper account entry (see ' +
-                    'examples at https://github.com/scality/S3/blob/' +
-                    'master/conf/authdata.json). Also note that support ' +
-                    'for account users has been dropped.',
-                { accountName, accountArn, filePath }
-            );
+    _validateData(authData, filePath?: string) {
+        const res = joi.validate(authData, this._joiValidator, {
+            abortEarly: false,
+        });
+        if (res.error) {
+            this._dumpJoiErrors(res.error.details, filePath);
             return false;
         }
-        return true;
-    }
-
-    #isValidUsers(account: Account, filePath?: string) {
-        if (account.users) {
-            const { name: accountName, arn: accountArn } = account;
-            this.#log.error(
-                'support for account users has been dropped, consider ' +
-                    'turning users into account entries (see examples at ' +
-                    'https://github.com/scality/S3/blob/master/conf/' +
-                    'authdata.json)',
-                { accountName, accountArn, filePath }
-            );
-            return false;
-        }
-        return true;
-    }
-
-    #isValidARN(account: Account, filePath?: string) {
-        const arnObj = ARN.createFromString(account.arn);
-        const { name: accountName, arn: accountArn } = account;
-        if (arnObj instanceof ARN) {
-            if (!arnObj.isIAMAccount()) {
-                this.#log.error('authentication config validation error', {
-                    reason: 'not an IAM account ARN',
-                    accountName,
-                    accountArn,
+        let allKeys = [];
+        let arnError = false;
+        const validatedAuth = res.value;
+        validatedAuth.accounts.forEach((account) => {
+            // backward-compat: ignore arn if starts with 'aws:' and log a
+            // warning
+            if (account.arn.startsWith('aws:')) {
+                this._log.error(
+                    'account must have a valid AWS ARN, legacy examples ' +
+                        "starting with 'aws:' are not supported anymore. " +
+                        'Please convert to a proper account entry (see ' +
+                        'examples at https://github.com/scality/S3/blob/' +
+                        'master/conf/authdata.json). Also note that support ' +
+                        'for account users has been dropped.',
+                    {
+                        accountName: account.name,
+                        accountArn: account.arn,
+                        filePath,
+                    }
+                );
+                arnError = true;
+                return;
+            }
+            if (account.users) {
+                this._log.error(
+                    'support for account users has been dropped, consider ' +
+                        'turning users into account entries (see examples at ' +
+                        'https://github.com/scality/S3/blob/master/conf/' +
+                        'authdata.json)',
+                    {
+                        accountName: account.name,
+                        accountArn: account.arn,
+                        filePath,
+                    }
+                );
+                arnError = true;
+                return;
+            }
+            const arnObj = ARN.createFromString(account.arn);
+            if (arnObj.error) {
+                this._log.error('authentication config validation error', {
+                    reason: arnObj.error.description,
+                    accountName: account.name,
+                    accountArn: account.arn,
                     filePath,
                 });
-                return false;
+                arnError = true;
+                return;
             }
-        } else {
-            this.#log.error('authentication config validation error', {
-                reason: arnObj.error.description,
-                accountName,
-                accountArn,
-                filePath,
-            });
+            if (!arnObj.isIAMAccount()) {
+                this._log.error('authentication config validation error', {
+                    reason: 'not an IAM account ARN',
+                    accountName: account.name,
+                    accountArn: account.arn,
+                    filePath,
+                });
+                arnError = true;
+                return;
+            }
+            allKeys = allKeys.concat(account.keys);
+        });
+        if (arnError) {
             return false;
         }
-        return true;
-    }
-
-    #isAuthDataValid(authData: any, filePath?: string) {
-        const options = { abortEarly: true };
-        const response = types.validators.accounts.validate(authData, options);
-        if (response.error) {
-            this.#dumpJoiErrors(response.error.details, filePath);
-            return false;
-        }
-        const validAccounts = response.value.accounts.filter(
-            (account: Account) =>
-                this.#isNotLegacyAWSARN(account, filePath) &&
-                this.#isValidUsers(account, filePath) &&
-                this.#isValidARN(account, filePath)
+        const uniqueKeysRes = joi.validate(
+            allKeys,
+            this._joiKeysValidator.unique('access')
         );
-        const areSomeInvalidAccounts =
-            validAccounts.length !== response.value.accounts.length;
-        if (areSomeInvalidAccounts) {
-            return false;
-        }
-        const keys = validAccounts.flatMap((account) => account.keys);
-        const uniqueKeysValidator = types.validators.keys.unique('access');
-        const areKeysUnique = uniqueKeysValidator.validate(keys);
-        if (areKeysUnique.error) {
-            this.#dumpJoiErrors(areKeysUnique.error.details, filePath);
+        if (uniqueKeysRes.error) {
+            this._dumpJoiErrors(uniqueKeysRes.error.details, filePath);
             return false;
         }
         return true;
     }
 
-    #dumpJoiErrors(errors: joi.ValidationErrorItem[], filePath?: string) {
+    _dumpJoiErrors(errors, filePath) {
         errors.forEach((err) => {
-            const baseLogInfo = { item: err.path, filePath };
-            const logInfo = () => {
-                if (err.type === 'array.unique') {
-                    const reason = `duplicate value '${err.context?.path}'`;
-                    const dupValue = err.context?.value[err.context.path];
-                    return { ...baseLogInfo, reason, dupValue };
-                } else {
-                    const reason = err.message;
-                    const context = err.context;
-                    return { ...baseLogInfo, reason, context };
-                }
-            };
-            this.#log.error(
-                'authentication config validation error',
-                logInfo()
-            );
+            const logInfo = { item: err.path, filePath };
+            if (err.type === 'array.unique') {
+                logInfo.reason = `duplicate value '${err.context.path}'`;
+                logInfo.dupValue = err.context.value[err.context.path];
+            } else {
+                logInfo.reason = err.message;
+                logInfo.context = err.context;
+            }
+            this._log.error('authentication config validation error', logInfo);
         });
     }
 }

lib/auth/backends/in_memory/Backend.ts

@@ -1,12 +1,10 @@
-import crypto from 'crypto';
-import { Logger } from 'werelogs';
+import * as crypto from 'crypto';
 import errors from '../../../errors';
 import { calculateSigningKey, hashSignature } from './vaultUtilities';
 import Indexer from './Indexer';
 import BaseBackend from '../base';
-import { Accounts } from './types';
 
-function _formatResponse(userInfoToSend: any) {
+function _formatResponse(userInfoToSend) {
     return {
         message: {
             body: { userInfo: userInfoToSend },
@@ -21,36 +19,39 @@ function _formatResponse(userInfoToSend: any) {
  * @class InMemoryBackend
  */
 class InMemoryBackend extends BaseBackend {
-    indexer: Indexer;
-    formatResponse: any;
-
+    indexer
+    formatResponse
+    
     /**
      * @constructor
-     * @param service - service identifer for construction arn
-     * @param indexer - indexer instance for retrieving account info
-     * @param formatter - function which accepts user info to send
+     * @param {string} service - service identifer for construction arn
+     * @param {Indexer} indexer - indexer instance for retrieving account info
+     * @param {function} formatter - function which accepts user info to send
      * back and returns it in an object
      */
-    constructor(service: string, indexer: Indexer, formatter: typeof _formatResponse) {
+    constructor(service, indexer, formatter) {
         super(service);
         this.indexer = indexer;
         this.formatResponse = formatter;
     }
 
     verifySignatureV2(
-        stringToSign: string,
-        signatureFromRequest: string,
-        accessKey: string,
-        options: any,
-        callback: any,
+        stringToSign,
+        signatureFromRequest,
+        accessKey,
+        options,
+        callback
     ) {
         const entity = this.indexer.getEntityByKey(accessKey);
         if (!entity) {
             return callback(errors.InvalidAccessKeyId);
         }
         const secretKey = this.indexer.getSecretKey(entity, accessKey);
-        const reconstructedSig =
-            hashSignature(stringToSign, secretKey, options.algo);
+        const reconstructedSig = hashSignature(
+            stringToSign,
+            secretKey,
+            options.algo
+        );
         if (signatureFromRequest !== reconstructedSig) {
             return callback(errors.SignatureDoesNotMatch);
         }
@@ -58,7 +59,6 @@ class InMemoryBackend extends BaseBackend {
             accountDisplayName: this.indexer.getAcctDisplayName(entity),
             canonicalID: entity.canonicalID,
             arn: entity.arn,
-            // @ts-ignore
             IAMdisplayName: entity.IAMdisplayName,
         };
         const vaultReturnObject = this.formatResponse(userInfoToSend);
@@ -66,13 +66,13 @@ class InMemoryBackend extends BaseBackend {
     }
 
     verifySignatureV4(
-        stringToSign: string,
-        signatureFromRequest: string,
-        accessKey: string,
-        region: string,
-        scopeDate: string,
-        options: any,
-        callback: any,
+        stringToSign,
+        signatureFromRequest,
+        accessKey,
+        region,
+        scopeDate,
+        options,
+        callback
     ) {
         const entity = this.indexer.getEntityByKey(accessKey);
         if (!entity) {
@@ -80,8 +80,10 @@ class InMemoryBackend extends BaseBackend {
         }
         const secretKey = this.indexer.getSecretKey(entity, accessKey);
         const signingKey = calculateSigningKey(secretKey, region, scopeDate);
-        const reconstructedSig = crypto.createHmac('sha256', signingKey)
-            .update(stringToSign, 'binary').digest('hex');
+        const reconstructedSig = crypto
+            .createHmac('sha256', signingKey)
+            .update(stringToSign, 'binary')
+            .digest('hex');
         if (signatureFromRequest !== reconstructedSig) {
             return callback(errors.SignatureDoesNotMatch);
         }
@@ -89,23 +91,21 @@ class InMemoryBackend extends BaseBackend {
             accountDisplayName: this.indexer.getAcctDisplayName(entity),
             canonicalID: entity.canonicalID,
             arn: entity.arn,
-            // @ts-ignore
             IAMdisplayName: entity.IAMdisplayName,
         };
         const vaultReturnObject = this.formatResponse(userInfoToSend);
         return callback(null, vaultReturnObject);
     }
 
-    getCanonicalIds(emails: string[], log: Logger, cb: any) {
+    getCanonicalIds(emails, log, cb) {
         const results = {};
-        emails.forEach(email => {
+        emails.forEach((email) => {
             const lowercasedEmail = email.toLowerCase();
             const entity = this.indexer.getEntityByEmail(lowercasedEmail);
             if (!entity) {
                 results[email] = 'NotFound';
             } else {
-                results[email] =
-                    entity.canonicalID;
+                results[email] = entity.canonicalID;
             }
         });
         const vaultReturnObject = {
@@ -116,9 +116,9 @@ class InMemoryBackend extends BaseBackend {
         return cb(null, vaultReturnObject);
     }
 
-    getEmailAddresses(canonicalIDs: string[], options: any, cb: any) {
+    getEmailAddresses(canonicalIDs, options, cb) {
         const results = {};
-        canonicalIDs.forEach(canonicalId => {
+        canonicalIDs.forEach((canonicalId) => {
             const foundEntity = this.indexer.getEntityByCanId(canonicalId);
             if (!foundEntity || !foundEntity.email) {
                 results[canonicalId] = 'NotFound';
@@ -137,16 +137,16 @@ class InMemoryBackend extends BaseBackend {
     /**
      * Gets accountIds for a list of accounts based on
      * the canonical IDs associated with the account
-     * @param canonicalIDs - list of canonicalIDs
-     * @param options - to send log id to vault
-     * @param cb - callback to calling function
-     * @returns callback with either error or
+     * @param {array} canonicalIDs - list of canonicalIDs
+     * @param {object} options - to send log id to vault
+     * @param {function} cb - callback to calling function
+     * @returns {function} callback with either error or
      * an object from Vault containing account canonicalID
      * as each object key and an accountId as the value (or "NotFound")
      */
-    getAccountIds(canonicalIDs: string[], options: any, cb: any) {
+    getAccountIds(canonicalIDs, options, cb) {
         const results = {};
-        canonicalIDs.forEach(canonicalID => {
+        canonicalIDs.forEach((canonicalID) => {
             const foundEntity = this.indexer.getEntityByCanId(canonicalID);
             if (!foundEntity || !foundEntity.shortid) {
                 results[canonicalID] = 'Not Found';
@@ -161,34 +161,32 @@ class InMemoryBackend extends BaseBackend {
         };
         return cb(null, vaultReturnObject);
     }
-
-    report(log: Logger, callback: any) {
-        return callback(null, {});
-    }
 }
 
-
 class S3AuthBackend extends InMemoryBackend {
     /**
      * @constructor
-     * @param authdata - the authentication config file's data
-     * @param authdata.accounts - array of account objects
-     * @param authdata.accounts[].name - account name
-     * @param authdata.accounts[].email - account email
-     * @param authdata.accounts[].arn - IAM resource name
-     * @param authdata.accounts[].canonicalID - account canonical ID
-     * @param authdata.accounts[].shortid - short account ID
-     * @param authdata.accounts[].keys - array of key objects
-     * @param authdata.accounts[].keys[].access - access key
-     * @param authdata.accounts[].keys[].secret - secret key
+     * @param {object} authdata - the authentication config file's data
+     * @param {object[]} authdata.accounts - array of account objects
+     * @param {string=} authdata.accounts[].name - account name
+     * @param {string} authdata.accounts[].email - account email
+     * @param {string} authdata.accounts[].arn - IAM resource name
+     * @param {string} authdata.accounts[].canonicalID - account canonical ID
+     * @param {string} authdata.accounts[].shortid - short account ID
+     * @param {object[]=} authdata.accounts[].keys - array of key objects
+     * @param {string} authdata.accounts[].keys[].access - access key
+     * @param {string} authdata.accounts[].keys[].secret - secret key
+     * @return {undefined}
      */
-    constructor(authdata?: Accounts) {
+    constructor(authdata) {
         super('s3', new Indexer(authdata), _formatResponse);
     }
 
-    refreshAuthData(authData?: Accounts) {
+    refreshAuthData(authData) {
         this.indexer = new Indexer(authData);
     }
 }
 
-export { S3AuthBackend as s3 }
+module.exports = {
+    s3: S3AuthBackend,
+};

lib/auth/backends/in_memory/Indexer.ts

@@ -1,19 +1,27 @@
-import { Accounts, Account, Entity } from './types';
-
 /**
  * Class that provides an internal indexing over the simple data provided by
  * the authentication configuration file for the memory backend. This allows
  * accessing the different authentication entities through various types of
  * keys.
+ *
+ * @class Indexer
  */
 export default class Indexer {
-    accountsBy: {
-        canId: { [id: string]: Entity | undefined },
-        accessKey: { [id: string]: Entity | undefined },
-        email: { [id: string]: Entity | undefined },
-    }
-
-    constructor(authdata?: Accounts) {
+    /**
+     * @constructor
+     * @param {object} authdata - the authentication config file's data
+     * @param {object[]} authdata.accounts - array of account objects
+     * @param {string=} authdata.accounts[].name - account name
+     * @param {string} authdata.accounts[].email - account email
+     * @param {string} authdata.accounts[].arn - IAM resource name
+     * @param {string} authdata.accounts[].canonicalID - account canonical ID
+     * @param {string} authdata.accounts[].shortid - short account ID
+     * @param {object[]=} authdata.accounts[].keys - array of key objects
+     * @param {string} authdata.accounts[].keys[].access - access key
+     * @param {string} authdata.accounts[].keys[].secret - secret key
+     * @return {undefined}
+     */
+    constructor(authdata) {
         this.accountsBy = {
             canId: {},
             accessKey: {},
@@ -29,11 +37,11 @@ export default class Indexer {
             return;
         }
 
-        this.#build(authdata);
+        this._build(authdata);
     }
 
-    #indexAccount(account: Account) {
-        const accountData: Entity = {
+    _indexAccount(account) {
+        const accountData = {
             arn: account.arn,
             canonicalID: account.canonicalID,
             shortid: account.shortid,
@@ -51,43 +59,85 @@ export default class Indexer {
         }
     }
 
-    #build(authdata: Accounts) {
+    _build(authdata) {
         authdata.accounts.forEach(account => {
-            this.#indexAccount(account);
+            this._indexAccount(account);
         });
     }
 
-    /** This method returns the account associated to a canonical ID. */
-    getEntityByCanId(canId: string): Entity | undefined {
+    /**
+     * This method returns the account associated to a canonical ID.
+     *
+     * @param {string} canId - The canonicalId of the account
+     * @return {Object} account - The account object
+     * @return {Object} account.arn - The account's ARN
+     * @return {Object} account.canonicalID - The account's canonical ID
+     * @return {Object} account.shortid - The account's internal shortid
+     * @return {Object} account.accountDisplayName - The account's display name
+     * @return {Object} account.email - The account's lowercased email
+     */
+    getEntityByCanId(canId) {
         return this.accountsBy.canId[canId];
     }
 
     /**
      * This method returns the entity (either an account or a user) associated
      * to a canonical ID.
+     *
      * @param {string} key - The accessKey of the entity
+     * @return {Object} entity - The entity object
+     * @return {Object} entity.arn - The entity's ARN
+     * @return {Object} entity.canonicalID - The canonical ID for the entity's
+     *                                       account
+     * @return {Object} entity.shortid - The entity's internal shortid
+     * @return {Object} entity.accountDisplayName - The entity's account
+     *                                              display name
+     * @return {Object} entity.IAMDisplayName - The user's display name
+     *                                          (if the entity is an user)
+     * @return {Object} entity.email - The entity's lowercased email
      */
-    getEntityByKey(key: string): Entity | undefined {
+    getEntityByKey(key) {
         return this.accountsBy.accessKey[key];
     }
 
     /**
      * This method returns the entity (either an account or a user) associated
      * to an email address.
+     *
+     * @param {string} email - The email address
+     * @return {Object} entity - The entity object
+     * @return {Object} entity.arn - The entity's ARN
+     * @return {Object} entity.canonicalID - The canonical ID for the entity's
+     *                                       account
+     * @return {Object} entity.shortid - The entity's internal shortid
+     * @return {Object} entity.accountDisplayName - The entity's account
+     *                                              display name
+     * @return {Object} entity.IAMDisplayName - The user's display name
+     *                                          (if the entity is an user)
+     * @return {Object} entity.email - The entity's lowercased email
      */
-    getEntityByEmail(email: string): Entity | undefined {
+    getEntityByEmail(email) {
         const lowerCasedEmail = email.toLowerCase();
         return this.accountsBy.email[lowerCasedEmail];
     }
 
-    /** This method returns the secret key associated with the entity. */
-    getSecretKey(entity: Entity, accessKey: string) {
-        const keys = entity.keys.filter(kv => kv.access === accessKey);
-        return keys[0].secret;
+    /**
+    * This method returns the secret key associated with the entity.
+    * @param {Object} entity - the entity object
+    * @param {string} accessKey - access key
+    * @returns {string} secret key
+    */
+    getSecretKey(entity, accessKey) {
+        return entity.keys
+            .filter(kv => kv.access === accessKey)[0].secret;
     }
 
-    /** This method returns the account display name associated with the entity. */
-    getAcctDisplayName(entity: Entity) {
+    /**
+    * This method returns the account display name associated with the entity.
+    * @param {Object} entity - the entity object
+    * @returns {string} account display name
+    */
+    getAcctDisplayName(entity) {
         return entity.accountDisplayName;
     }
 }

lib/auth/backends/in_memory/types.ts

@@ -1,51 +0,0 @@
-import joi from 'joi';
-
-export type Callback<Data = any> = (err?: Error | null | undefined, data?: Data) => void;
-
-export type Credentials = { access: string; secret: string };
-export type Base = {
-    arn: string;
-    canonicalID: string;
-    shortid: string;
-    email: string;
-    keys: Credentials[];
-};
-export type Account = Base & { name: string; users: any[] };
-export type Accounts = { accounts: Account[] };
-export type Entity = Base & { accountDisplayName: string };
-
-const keys = ((): joi.ArraySchema => {
-    const str = joi.string().required();
-    const items = { access: str, secret: str };
-    return joi.array().items(items).required();
-})();
-
-const account = (() => {
-    return joi.object<Account>({
-        name: joi.string().required(),
-        email: joi.string().email().required(),
-        arn: joi.string().required(),
-        canonicalID: joi.string().required(),
-        shortid: joi
-            .string()
-            .regex(/^[0-9]{12}$/)
-            .required(),
-        keys: keys,
-        // backward-compat
-        users: joi.array(),
-    });
-})();
-
-const accounts = (() => {
-    return joi.object<Accounts>({
-        accounts: joi
-            .array()
-            .items(account)
-            .required()
-            .unique('arn')
-            .unique('email')
-            .unique('canonicalID'),
-    });
-})();
-
-export const validators = { keys, account, accounts };

lib/auth/backends/in_memory/validateAuthConfig.ts

@@ -1,15 +1,15 @@
-import { Logger } from 'werelogs';
 import AuthLoader from './AuthLoader';
-import { Accounts } from './types';
 
 /**
  * @deprecated please use {@link AuthLoader} class instead
- * @return true on erroneous data false on success
+ *
+ * @param {object} authdata - the authentication config file's data
+ * @param {werelogs.API} logApi - object providing a constructor function
+ *                                for the Logger object
+ * @return {boolean} true on erroneous data
+ *                   false on success
  */
-export default function validateAuthConfig(
-    authdata: Accounts,
-    logApi?: { Logger: typeof Logger }
-) {
+export default function validateAuthConfig(authdata, logApi) {
     const authLoader = new AuthLoader(logApi);
     authLoader.addAccounts(authdata);
     return !authLoader.validate();

lib/auth/backends/in_memory/vaultUtilities.ts

@@ -15,10 +15,6 @@ export function hashSignature(
     return hmacObject.update(stringToSign, 'binary').digest('base64');
 }
 
-const sha256Digest = (key: string | Buffer, data: string) => {
-    return crypto.createHmac('sha256', key).update(data, 'binary').digest();
-};
-
 /** calculateSigningKey for v4 Auth
  * @param {string} secretKey - requester's secretKey
  * @param {string} region - region included in request
@@ -30,11 +26,15 @@ export function calculateSigningKey(
     secretKey: string,
     region: string,
     scopeDate: string,
-    service?: string
-): Buffer {
-    const dateKey = sha256Digest(`AWS4${secretKey}`, scopeDate);
-    const dateRegionKey = sha256Digest(dateKey, region);
-    const dateRegionServiceKey = sha256Digest(dateRegionKey, service || 's3');
-    const signingKey = sha256Digest(dateRegionServiceKey, 'aws4_request');
+    service: string
+): string {
+    const dateKey = crypto.createHmac('sha256', `AWS4${secretKey}`)
+        .update(scopeDate, 'binary').digest();
+    const dateRegionKey = crypto.createHmac('sha256', dateKey)
+        .update(region, 'binary').digest();
+    const dateRegionServiceKey = crypto.createHmac('sha256', dateRegionKey)
+        .update(service || 's3', 'binary').digest();
+    const signingKey = crypto.createHmac('sha256', dateRegionServiceKey)
+        .update('aws4_request', 'binary').digest();
     return signingKey;
 }

lib/auth/v2/algoCheck.ts

@@ -1,5 +1,5 @@
-export default function algoCheck(signatureLength: number) {
-    let algo: 'sha256' | 'sha1';
+export default function algoCheck(signatureLength) {
+    let algo;
     // If the signature sent is 44 characters,
     // this means that sha256 was used:
     // 44 characters in base64
@@ -11,6 +11,5 @@ export default function algoCheck(signatureLength: number) {
     if (signatureLength === SHA1LEN) {
         algo = 'sha1';
     }
-    // @ts-ignore
     return algo;
 }

lib/auth/v2/checkRequestExpiry.ts

@@ -1,9 +1,8 @@
-import { Logger } from 'werelogs';
 import errors from '../../errors';
 
 const epochTime = new Date('1970-01-01').getTime();
 
-export default function checkRequestExpiry(timestamp: number, log: Logger) {
+export default function checkRequestExpiry(timestamp, log) {
     // If timestamp is before epochTime, the request is invalid and return
     // errors.AccessDenied
     if (timestamp < epochTime) {
@@ -17,7 +16,7 @@ export default function checkRequestExpiry(timestamp: number, log: Logger) {
     log.trace('request timestamp', { requestTimestamp: timestamp });
     log.trace('current timestamp', { currentTimestamp: currentTime });
 
-    const fifteenMinutes = (15 * 60 * 1000);
+    const fifteenMinutes = 15 * 60 * 1000;
     if (currentTime - timestamp > fifteenMinutes) {
         log.trace('request timestamp is not within 15 minutes of current time');
         log.debug('request time too skewed', { timestamp });

lib/auth/v2/constructStringToSign.ts

@@ -1,14 +1,8 @@
-import { Logger } from 'werelogs';
 import utf8 from 'utf8';
 import getCanonicalizedAmzHeaders from './getCanonicalizedAmzHeaders';
 import getCanonicalizedResource from './getCanonicalizedResource';
 
-export default function constructStringToSign(
-    request: any,
-    data: { [key: string]: string },
-    log: Logger,
-    clientType?: any
-) {
+export default function constructStringToSign(request, data, log, clientType?: any) {
     /*
     Build signature per AWS requirements:
     StringToSign = HTTP-Verb + '\n' +
@@ -26,11 +20,11 @@ export default function constructStringToSign(
 
     const contentMD5 = headers['content-md5'] ?
         headers['content-md5'] : query['Content-MD5'];
-    stringToSign += (contentMD5 ? `${contentMD5}\n` : '\n');
+    stringToSign += contentMD5 ? `${contentMD5}\n` : '\n';
 
     const contentType = headers['content-type'] ?
         headers['content-type'] : query['Content-Type'];
-    stringToSign += (contentType ? `${contentType}\n` : '\n');
+    stringToSign += contentType ? `${contentType}\n` : '\n';
 
     /*
     AWS docs are conflicting on whether to include x-amz-date header here

lib/auth/v2/getCanonicalizedAmzHeaders.ts

@@ -1,12 +1,12 @@
-export default function getCanonicalizedAmzHeaders(headers: Headers, clientType: string) {
+export default function getCanonicalizedAmzHeaders(headers, clientType) {
     /*
     Iterate through headers and pull any headers that are x-amz headers.
     Need to include 'x-amz-date' here even though AWS docs
     ambiguous on this.
     */
     const filterFn = clientType === 'GCP' ?
-        (val: string) => val.substr(0, 7) === 'x-goog-' :
-        (val: string) => val.substr(0, 6) === 'x-amz-';
+        val => val.substr(0, 7) === 'x-goog-' :
+        val => val.substr(0, 6) === 'x-amz-';
     const amzHeaders = Object.keys(headers)
         .filter(filterFn)
         .map(val => [val.trim(), headers[val].trim()]);

lib/auth/v2/getCanonicalizedResource.ts

@@ -39,7 +39,7 @@ const awsSubresources = [
     'website',
 ];
 
-export default function getCanonicalizedResource(request: any, clientType: string) {
+export default function getCanonicalizedResource(request, clientType) {
     /*
     This variable is used to determine whether to insert
     a '?' or '&'.  Once a query parameter is added to the resourceString,

lib/auth/v2/headerAuthCheck.ts

@@ -1,11 +1,10 @@
-import { Logger } from 'werelogs';
 import errors from '../../errors';
 import * as constants from '../../constants';
 import constructStringToSign from './constructStringToSign';
 import checkRequestExpiry from './checkRequestExpiry';
 import algoCheck from './algoCheck';
 
-export function check(request: any, log: Logger, data: { [key: string]: string }) {
+export function check(request, log, data) {
     log.trace('running header auth check');
     const headers = request.headers;
 
@@ -16,15 +15,19 @@ export function check(request: any, log: Logger, data: { [key: string]: string }
     }
 
     // Check to make sure timestamp is within 15 minutes of current time
-    let timestamp = headers['x-amz-date'] ?
-        headers['x-amz-date'] : headers.date;
+    let timestamp = headers['x-amz-date']
+        ? headers['x-amz-date']
+        : headers.date;
     timestamp = Date.parse(timestamp);
     if (!timestamp) {
-        log.debug('missing or invalid date header',
-            { method: 'auth/v2/headerAuthCheck.check' });
-        return { err: errors.AccessDenied.
-            customizeDescription('Authentication requires a valid Date or ' +
-          'x-amz-date header') };
+        log.debug('missing or invalid date header', {
+            method: 'auth/v2/headerAuthCheck.check',
+        });
+        return {
+            err: errors.AccessDenied.customizeDescription(
+                'Authentication requires a valid Date or ' + 'x-amz-date header'
+            ),
+        };
     }
 
     const err = checkRequestExpiry(timestamp, log);
@@ -45,13 +48,14 @@ export function check(request: any, log: Logger, data: { [key: string]: string }
         log.debug('invalid authorization header', { authInfo });
         return { err: errors.InvalidArgument };
     }
-    const accessKey = semicolonIndex > 4 ?
-        authInfo.substring(4, semicolonIndex).trim() : undefined;
+    const accessKey =
+        semicolonIndex > 4
+            ? authInfo.substring(4, semicolonIndex).trim()
+            : undefined;
     if (typeof accessKey !== 'string' || accessKey.length === 0) {
         log.trace('invalid authorization header', { authInfo });
         return { err: errors.MissingSecurityHeader };
     }
-    // @ts-ignore
     log.addDefaultFields({ accessKey });
 
     const signatureFromRequest = authInfo.substring(semicolonIndex + 1).trim();

lib/auth/v2/queryAuthCheck.ts

@@ -1,10 +1,9 @@
-import { Logger } from 'werelogs';
 import errors from '../../errors';
 import * as constants from '../../constants';
 import algoCheck from './algoCheck';
 import constructStringToSign from './constructStringToSign';
 
-export function check(request: any, log: Logger, data: { [key: string]: string }) {
+export function check(request, log, data) {
     log.trace('running query auth check');
     if (request.method === 'POST') {
         log.debug('query string auth not supported for post requests');
@@ -27,30 +26,31 @@ export function check(request: any, log: Logger, data: { [key: string]: string }
     */
     const expirationTime = parseInt(data.Expires, 10) * 1000;
     if (Number.isNaN(expirationTime)) {
-        log.debug('invalid expires parameter',
-            { expires: data.Expires });
+        log.debug('invalid expires parameter', { expires: data.Expires });
         return { err: errors.MissingSecurityHeader };
     }
 
     const currentTime = Date.now();
 
-    const preSignedURLExpiry = process.env.PRE_SIGN_URL_EXPIRY
-        && !Number.isNaN(process.env.PRE_SIGN_URL_EXPIRY)
-        ? Number.parseInt(process.env.PRE_SIGN_URL_EXPIRY, 10)
-        : constants.defaultPreSignedURLExpiry * 1000;
+    const preSignedURLExpiry =
+        process.env.PRE_SIGN_URL_EXPIRY &&
+        !Number.isNaN(process.env.PRE_SIGN_URL_EXPIRY)
+            ? Number.parseInt(process.env.PRE_SIGN_URL_EXPIRY, 10)
+            : constants.defaultPreSignedURLExpiry * 1000;
 
     if (expirationTime > currentTime + preSignedURLExpiry) {
-        log.debug('expires parameter too far in future',
-            { expires: request.query.Expires });
+        log.debug('expires parameter too far in future', {
+            expires: request.query.Expires,
+        });
         return { err: errors.AccessDenied };
     }
     if (currentTime > expirationTime) {
-        log.debug('current time exceeds expires time',
-            { expires: request.query.Expires });
+        log.debug('current time exceeds expires time', {
+            expires: request.query.Expires,
+        });
         return { err: errors.RequestTimeTooSkewed };
     }
     const accessKey = data.AWSAccessKeyId;
-    // @ts-ignore
     log.addDefaultFields({ accessKey });
 
     const signatureFromRequest = decodeURIComponent(data.Signature);

lib/auth/v4/awsURIencode.ts

@@ -17,7 +17,7 @@ See http://docs.aws.amazon.com/AmazonS3/latest/API/sig-v4-header-based-auth.html
 */
 
 // converts utf8 character to hex and pads "%" before every two hex digits
-function _toHexUTF8(char: string) {
+function _toHexUTF8(char) {
     const hexRep = Buffer.from(char, 'utf8').toString('hex').toUpperCase();
     let res = '';
     hexRep.split('').forEach((v, n) => {
@@ -30,35 +30,34 @@ function _toHexUTF8(char: string) {
     return res;
 }
 
-export default function awsURIencode(
-    input: string,
-    encodeSlash?: boolean,
-    noEncodeStar?: boolean
-) {
+export default function awsURIencode(input, encodeSlash?: any, noEncodeStar?: any) {
+    const encSlash = encodeSlash === undefined ? true : encodeSlash;
+    let encoded = '';
     /**
      * Duplicate query params are not suppported by AWS S3 APIs. These params
      * are parsed as Arrays by Node.js HTTP parser which breaks this method
      */
-     if (typeof input !== 'string') {
-        return '';
+    if (typeof input !== 'string') {
+        return encoded;
     }
-    let encoded = "";
-    const slash = encodeSlash === undefined || encodeSlash ? '%2F' : '/';
-    const star = noEncodeStar !== undefined && noEncodeStar ? '*' : '%2A';
     for (let i = 0; i < input.length; i++) {
         let ch = input.charAt(i);
-        if ((ch >= 'A' && ch <= 'Z') ||
+        if (
+            (ch >= 'A' && ch <= 'Z') ||
             (ch >= 'a' && ch <= 'z') ||
             (ch >= '0' && ch <= '9') ||
-            ch === '_' || ch === '-' ||
-            ch === '~' || ch === '.') {
+            ch === '_' ||
+            ch === '-' ||
+            ch === '~' ||
+            ch === '.'
+        ) {
             encoded = encoded.concat(ch);
         } else if (ch === ' ') {
             encoded = encoded.concat('%20');
         } else if (ch === '/') {
-            encoded = encoded.concat(slash);
+            encoded = encoded.concat(encSlash ? '%2F' : ch);
         } else if (ch === '*') {
-            encoded = encoded.concat(star);
+            encoded = encoded.concat(noEncodeStar ? '*' : '%2A');
         } else {
             if (ch >= '\uD800' && ch <= '\uDBFF') {
                 // If this character is a high surrogate peek the next character

lib/auth/v4/constructStringToSign.ts

@@ -1,5 +1,4 @@
 import * as crypto from 'crypto';
-import { Logger } from 'werelogs';
 import createCanonicalRequest from './createCanonicalRequest';
 
 /**
@@ -7,17 +6,7 @@ import createCanonicalRequest from './createCanonicalRequest';
  * @param {object} params - params object
  * @returns {string} - stringToSign
  */
-export default function constructStringToSign(params: {
-    request: any;
-    signedHeaders: any;
-    payloadChecksum: any;
-    credentialScope: string;
-    timestamp: string;
-    query: { [key: string]: string };
-    log?: Logger;
-    proxyPath?: string;
-    awsService: string;
-}): string | Error {
+export default function constructStringToSign(params): string {
     const {
         request,
         signedHeaders,
@@ -40,8 +29,6 @@ export default function constructStringToSign(params: {
         service: params.awsService,
     });
 
-    // TODO Why that line?
-    // @ts-ignore
     if (canonicalReqResult instanceof Error) {
         if (log) {
             log.error('error creating canonicalRequest');
@@ -52,9 +39,11 @@ export default function constructStringToSign(params: {
         log.debug('constructed canonicalRequest', { canonicalReqResult });
     }
     const sha256 = crypto.createHash('sha256');
-    const canonicalHex = sha256.update(canonicalReqResult, 'binary')
+    const canonicalHex = sha256
+        .update(canonicalReqResult, 'binary')
         .digest('hex');
-    const stringToSign = `AWS4-HMAC-SHA256\n${timestamp}\n` +
-    `${credentialScope}\n${canonicalHex}`;
+    const stringToSign =
+        `AWS4-HMAC-SHA256\n${timestamp}\n` +
+        `${credentialScope}\n${canonicalHex}`;
     return stringToSign;
 }

lib/auth/v4/createCanonicalRequest.ts

@@ -1,33 +1,25 @@
+import awsURIencode from './awsURIencode';
 import * as crypto from 'crypto';
 import * as queryString from 'querystring';
-import awsURIencode from './awsURIencode';
 
 /**
  * createCanonicalRequest - creates V4 canonical request
- * @param params - contains pHttpVerb (request type),
+ * @param {object} params - contains pHttpVerb (request type),
  * pResource (parsed from URL), pQuery (request query),
  * pHeaders (request headers), pSignedHeaders (signed headers from request),
  * payloadChecksum (from request)
- * @returns - canonicalRequest
+ * @returns {string} - canonicalRequest
  */
-export default function createCanonicalRequest(
-    params: {
-        pHttpVerb: string;
-        pResource: string;
-        pQuery: { [key: string]: string };
-        pHeaders: any;
-        pSignedHeaders: any;
-        service: string;
-        payloadChecksum: string;
-    }
-) {
+export default function createCanonicalRequest(params) {
     const pHttpVerb = params.pHttpVerb;
     const pResource = params.pResource;
     const pQuery = params.pQuery;
     const pHeaders = params.pHeaders;
     const pSignedHeaders = params.pSignedHeaders;
     const service = params.service;
+
     let payloadChecksum = params.payloadChecksum;
+
     if (!payloadChecksum) {
         if (pHttpVerb === 'GET') {
             payloadChecksum = 'e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b' +
@@ -40,7 +32,7 @@ export default function createCanonicalRequest(
             if (/aws-sdk-java\/[0-9.]+/.test(pHeaders['user-agent'])) {
                 notEncodeStar = true;
             }
-            let payload = queryString.stringify(pQuery, undefined, undefined, {
+            let payload = queryString.stringify(pQuery, null, null, {
                 encodeURIComponent: input => awsURIencode(input, true,
                     notEncodeStar),
             });
@@ -67,11 +59,11 @@ export default function createCanonicalRequest(
 
     // signed headers
     const signedHeadersList = pSignedHeaders.split(';');
-    signedHeadersList.sort((a: any, b: any) => a.localeCompare(b));
+    signedHeadersList.sort((a, b) => a.localeCompare(b));
     const signedHeaders = signedHeadersList.join(';');
 
     // canonical headers
-    const canonicalHeadersList = signedHeadersList.map((signedHeader: any) => {
+    const canonicalHeadersList = signedHeadersList.map(signedHeader => {
         if (pHeaders[signedHeader] !== undefined) {
             const trimmedHeader = pHeaders[signedHeader]
                 .trim().replace(/\s+/g, ' ');

lib/auth/v4/headerAuthCheck.ts

@@ -1,4 +1,3 @@
-import { Logger } from 'werelogs';
 import errors from '../../../lib/errors';
 import * as constants from '../../constants';
 import constructStringToSign from './constructStringToSign';
@@ -15,18 +14,14 @@ import {
 
 /**
  * V4 header auth check
- * @param request - HTTP request object
- * @param log - logging object
- * @param data - Parameters from queryString parsing or body of
+ * @param {object} request - HTTP request object
+ * @param {object} log - logging object
+ * @param {object} data - Parameters from queryString parsing or body of
  *      POST request
- * @param awsService - Aws service ('iam' or 's3')
+ * @param {string} awsService - Aws service ('iam' or 's3')
+ * @return {callback} calls callback
  */
-export function check(
-    request: any,
-    log: Logger,
-    data: { [key: string]: string },
-    awsService: string
-) {
+export function check(request, log, data, awsService) {
     log.trace('running header auth check');
 
     const token = request.headers['x-amz-security-token'];
@@ -56,8 +51,9 @@ export function check(
     if (payloadChecksum === 'STREAMING-AWS4-HMAC-SHA256-PAYLOAD') {
         log.trace('requesting streaming v4 auth');
         if (request.method !== 'PUT') {
-            log.debug('streaming v4 auth for put only',
-                { method: 'auth/v4/headerAuthCheck.check' });
+            log.debug('streaming v4 auth for put only', {
+                method: 'auth/v4/headerAuthCheck.check',
+            });
             return { err: errors.InvalidArgument };
         }
         if (!request.headers['x-amz-decoded-content-length']) {
@@ -67,24 +63,27 @@ export function check(
 
     log.trace('authorization header from request', { authHeader });
 
-    const signatureFromRequest = authHeaderItems.signatureFromRequest!;
-    const credentialsArr = authHeaderItems.credentialsArr!;
-    const signedHeaders = authHeaderItems.signedHeaders!;
+    const signatureFromRequest = authHeaderItems.signatureFromRequest;
+    const credentialsArr = authHeaderItems.credentialsArr;
+    const signedHeaders = authHeaderItems.signedHeaders;
 
     if (!areSignedHeadersComplete(signedHeaders, request.headers)) {
         log.debug('signedHeaders are incomplete', { signedHeaders });
         return { err: errors.AccessDenied };
     }
 
-    let timestamp: string | undefined;
+    let timestamp;
     // check request timestamp
     const xAmzDate = request.headers['x-amz-date'];
     if (xAmzDate) {
         const xAmzDateArr = xAmzDate.split('T');
         // check that x-amz- date has the correct format and after epochTime
-        if (xAmzDateArr.length === 2 && xAmzDateArr[0].length === 8
-          && xAmzDateArr[1].length === 7
-          && Number.parseInt(xAmzDateArr[0], 10) > 19700101) {
+        if (
+            xAmzDateArr.length === 2 &&
+            xAmzDateArr[0].length === 8 &&
+            xAmzDateArr[1].length === 7 &&
+            Number.parseInt(xAmzDateArr[0], 10) > 19700101
+        ) {
             // format of x-amz- date is ISO 8601: YYYYMMDDTHHMMSSZ
             timestamp = request.headers['x-amz-date'];
         }
@@ -92,18 +91,27 @@ export function check(
         timestamp = convertUTCtoISO8601(request.headers.date);
     }
     if (!timestamp) {
-        log.debug('missing or invalid date header',
-            { method: 'auth/v4/headerAuthCheck.check' });
-        return { err: errors.AccessDenied.
-            customizeDescription('Authentication requires a valid Date or ' +
-          'x-amz-date header') };
+        log.debug('missing or invalid date header', {
+            method: 'auth/v4/headerAuthCheck.check',
+        });
+        return {
+            err: errors.AccessDenied.customizeDescription(
+                'Authentication requires a valid Date or ' + 'x-amz-date header'
+            ),
+        };
     }
 
-    const validationResult = validateCredentials(credentialsArr, timestamp,
-        log);
+    const validationResult = validateCredentials(
+        credentialsArr,
+        timestamp,
+        log
+    );
     if (validationResult instanceof Error) {
-        log.debug('credentials in improper format', { credentialsArr,
-            timestamp, validationResult });
+        log.debug('credentials in improper format', {
+            credentialsArr,
+            timestamp,
+            validationResult,
+        });
         return { err: validationResult };
     }
     // credentialsArr is [accessKey, date, region, aws-service, aws4_request]
@@ -126,20 +134,23 @@ export function check(
     // expiry is as set out in the policy.
 
     // 15 minutes in seconds
-    const expiry = (15 * 60);
+    const expiry = 15 * 60;
     const isTimeSkewed = checkTimeSkew(timestamp, expiry, log);
     if (isTimeSkewed) {
         return { err: errors.RequestTimeTooSkewed };
     }
 
-    let proxyPath: string | undefined;
+    let proxyPath = null;
     if (request.headers.proxy_path) {
         try {
             proxyPath = decodeURIComponent(request.headers.proxy_path);
         } catch (err) {
             log.debug('invalid proxy_path header', { proxyPath, err });
-            return { err: errors.InvalidArgument.customizeDescription(
-                'invalid proxy_path header') };
+            return {
+                err: errors.InvalidArgument.customizeDescription(
+                    'invalid proxy_path header'
+                ),
+            };
         }
     }
 
@@ -159,7 +170,6 @@ export function check(
         return { err: stringToSign };
     }
 
-
     return {
         err: null,
         params: {

lib/auth/v4/queryAuthCheck.ts

@@ -1,6 +1,6 @@
-import { Logger } from 'werelogs';
 import * as constants from '../../constants';
 import errors from '../../errors';
+
 import constructStringToSign from './constructStringToSign';
 import { checkTimeSkew, convertAmzTimeToMs } from './timeUtils';
 import { validateCredentials, extractQueryParams } from './validateInputs';
@@ -8,11 +8,12 @@ import { areSignedHeadersComplete } from './validateInputs';
 
 /**
  * V4 query auth check
- * @param request - HTTP request object
- * @param log - logging object
- * @param data - Contain authentification params (GET or POST data)
+ * @param {object} request - HTTP request object
+ * @param {object} log - logging object
+ * @param {object} data - Contain authentification params (GET or POST data)
+ * @return {callback} calls callback
  */
-export function check(request: any, log: Logger, data: { [key: string]: string }) {
+export function check(request, log, data) {
     const authParams = extractQueryParams(data, log);
 
     if (Object.keys(authParams).length !== 5) {
@@ -27,22 +28,24 @@ export function check(request: any, log: Logger, data: { [key: string]: string }
         return { err: errors.InvalidToken };
     }
 
-    const signedHeaders = authParams.signedHeaders!;
-    const signatureFromRequest = authParams.signatureFromRequest!;
-    const timestamp = authParams.timestamp!;
-    const expiry = authParams.expiry!;
-    const credential = authParams.credential!;
+    const signedHeaders = authParams.signedHeaders;
+    const signatureFromRequest = authParams.signatureFromRequest;
+    const timestamp = authParams.timestamp;
+    const expiry = authParams.expiry;
+    const credential = authParams.credential;
 
     if (!areSignedHeadersComplete(signedHeaders, request.headers)) {
         log.debug('signedHeaders are incomplete', { signedHeaders });
         return { err: errors.AccessDenied };
     }
 
-    const validationResult = validateCredentials(credential, timestamp,
-        log);
+    const validationResult = validateCredentials(credential, timestamp, log);
     if (validationResult instanceof Error) {
-        log.debug('credentials in improper format', { credential,
-            timestamp, validationResult });
+        log.debug('credentials in improper format', {
+            credential,
+            timestamp,
+            validationResult,
+        });
         return { err: validationResult };
     }
     const accessKey = credential[0];
@@ -56,14 +59,17 @@ export function check(request: any, log: Logger, data: { [key: string]: string }
         return { err: errors.RequestTimeTooSkewed };
     }
 
-    let proxyPath: string | undefined;
+    let proxyPath = null;
     if (request.headers.proxy_path) {
         try {
             proxyPath = decodeURIComponent(request.headers.proxy_path);
         } catch (err) {
             log.debug('invalid proxy_path header', { proxyPath });
-            return { err: errors.InvalidArgument.customizeDescription(
-                'invalid proxy_path header') };
+            return {
+                err: errors.InvalidArgument.customizeDescription(
+                    'invalid proxy_path header'
+                ),
+            };
         }
     }
 
@@ -89,8 +95,7 @@ export function check(request: any, log: Logger, data: { [key: string]: string }
         signedHeaders,
         payloadChecksum,
         timestamp,
-        credentialScope:
-            `${scopeDate}/${region}/${service}/${requestType}`,
+        credentialScope: `${scopeDate}/${region}/${service}/${requestType}`,
         awsService: service,
         proxyPath,
     });

lib/auth/v4/streamingV4/V4Transform.ts

@@ -1,69 +1,57 @@
 import { Transform } from 'stream';
 import async from 'async';
 import errors from '../../../errors';
-import { Logger } from 'werelogs';
-import Vault, { AuthV4RequestParams } from '../../Vault';
-import { Callback } from '../../backends/in_memory/types';
-
 import constructChunkStringToSign from './constructChunkStringToSign';
 
-export type TransformParams = {
-    accessKey: string;
-    signatureFromRequest: string;
-    region: string;
-    scopeDate: string;
-    timestamp: string;
-    credentialScope: string;
-};
-
 /**
  * This class is designed to handle the chunks sent in a streaming
  * v4 Auth request
  */
 export default class V4Transform extends Transform {
-    log: Logger;
-    cb: Callback;
-    accessKey: string;
-    region: string;
-    scopeDate: string;
-    timestamp: string;
-    credentialScope: string;
-    lastSignature: string;
-    currentSignature?: string;
-    haveMetadata: boolean;
-    seekingDataSize: number;
-    currentData?: any;
-    dataCursor: number;
-    currentMetadata: any[];
-    lastPieceDone: boolean;
-    lastChunk: boolean;
-    vault: Vault;
+    log;
+    cb;
+    accessKey;
+    region;
+    scopeDate;
+    timestamp;
+    credentialScope;
+    lastSignature;
+    currentSignature;
+    haveMetadata;
+    seekingDataSize;
+    currentData;
+    dataCursor;
+    currentMetadata;
+    lastPieceDone;
+    lastChunk;
+    vault;
 
     /**
      * @constructor
-     * @param streamingV4Params - info for chunk authentication
-     * @param streamingV4Params.accessKey - requester's accessKey
-     * @param streamingV4Params.signatureFromRequest - signature
+     * @param {object} streamingV4Params - info for chunk authentication
+     * @param {string} streamingV4Params.accessKey - requester's accessKey
+     * @param {string} streamingV4Params.signatureFromRequest - signature
      * sent with headers
-     * @param streamingV4Params.region - region sent with auth header
-     * @param streamingV4Params.scopeDate - date sent with auth header
-     * @param streamingV4Params.timestamp - date parsed from headers
+     * @param {string} streamingV4Params.region - region sent with auth header
+     * @param {string} streamingV4Params.scopeDate - date sent with auth header
+     * @param {string} streamingV4Params.timestamp - date parsed from headers
      * in ISO 8601 format: YYYYMMDDTHHMMSSZ
-     * @param streamingV4Params.credentialScope - items from auth
+     * @param {string} streamingV4Params.credentialScope - items from auth
      * header plus the string 'aws4_request' joined with '/':
      * timestamp/region/aws-service/aws4_request
-     * @param vault - Vault instance passed from CloudServer
-     * @param log - logger object
-     * @param cb - callback to api
+     * @param {object} vault - Vault instance passed from CloudServer
+     * @param {object} log - logger object
+     * @param {function} cb - callback to api
      */
-    constructor(
-        streamingV4Params: TransformParams,
-        vault: Vault,
-        log: Logger,
-        cb: Callback,
-    ) {
-        const { accessKey, signatureFromRequest, region, scopeDate, timestamp,
-            credentialScope } = streamingV4Params;
+    constructor(streamingV4Params, vault, log, cb) {
+        const {
+            accessKey,
+            signatureFromRequest,
+            region,
+            scopeDate,
+            timestamp,
+            credentialScope,
+        } = streamingV4Params;
         super({});
         this.log = log;
         this.cb = cb;
@@ -89,8 +77,8 @@ export default class V4Transform extends Transform {
 
     /**
      * This function will parse the metadata portion of the chunk
-     * @param remainingChunk - chunk sent from _transform
-     * @return response - if error, will return 'err' key with
+     * @param {Buffer} remainingChunk - chunk sent from _transform
+     * @return {object} response - if error, will return 'err' key with
      * arsenal error value.
      * if incomplete metadata, will return 'completeMetadata' key with
      * value false
@@ -98,7 +86,7 @@ export default class V4Transform extends Transform {
      * value true and the key 'unparsedChunk' with the remaining chunk without
      * the parsed metadata piece
      */
-    _parseMetadata(remainingChunk: Buffer) {
+    _parseMetadata(remainingChunk) {
         let remainingPlusStoredMetadata = remainingChunk;
         // have metadata pieces so need to add to the front of
         // remainingChunk
@@ -113,32 +101,35 @@ export default class V4Transform extends Transform {
             this.currentMetadata.push(remainingPlusStoredMetadata);
             return { completeMetadata: false };
         }
-        let fullMetadata = remainingPlusStoredMetadata.slice(0,
-            lineBreakIndex);
+        let fullMetadata = remainingPlusStoredMetadata.slice(0, lineBreakIndex);
 
         // handle extra line break on end of data chunk
         if (fullMetadata.length === 0) {
-            const chunkWithoutLeadingLineBreak = remainingPlusStoredMetadata
-                .slice(2);
+            const chunkWithoutLeadingLineBreak =
+                remainingPlusStoredMetadata.slice(2);
             // find second line break
             lineBreakIndex = chunkWithoutLeadingLineBreak.indexOf('\r\n');
             if (lineBreakIndex < 0) {
                 this.currentMetadata.push(chunkWithoutLeadingLineBreak);
                 return { completeMetadata: false };
             }
-            fullMetadata = chunkWithoutLeadingLineBreak.slice(0,
-                lineBreakIndex);
+            fullMetadata = chunkWithoutLeadingLineBreak.slice(
+                0,
+                lineBreakIndex
+            );
         }
 
         const splitMeta = fullMetadata.toString().split(';');
         this.log.trace('parsed full metadata for chunk', { splitMeta });
         if (splitMeta.length !== 2) {
-            this.log.trace('chunk body did not contain correct ' +
-            'metadata format');
+            this.log.trace(
+                'chunk body did not contain correct ' + 'metadata format'
+            );
             return { err: errors.InvalidArgument };
         }
+        let dataSize = splitMeta[0];
         // chunk-size is sent in hex
-        const dataSize = Number.parseInt(splitMeta[0], 16);
+        dataSize = Number.parseInt(dataSize, 16);
         if (Number.isNaN(dataSize)) {
             this.log.trace('chunk body did not contain valid size');
             return { err: errors.InvalidArgument };
@@ -165,63 +156,66 @@ export default class V4Transform extends Transform {
             completeMetadata: true,
             // start slice at lineBreak plus 2 to remove line break at end of
             // metadata piece since length of '\r\n' is 2
-            unparsedChunk: remainingPlusStoredMetadata
-                .slice(lineBreakIndex + 2),
+            unparsedChunk: remainingPlusStoredMetadata.slice(
+                lineBreakIndex + 2
+            ),
         };
     }
 
     /**
      * Build the stringToSign and authenticate the chunk
-     * @param dataToSend - chunk sent from _transform or null
+     * @param {Buffer} dataToSend - chunk sent from _transform or null
      * if last chunk without data
-     * @param done - callback to _transform
-     * @return executes callback with err if applicable
+     * @param {function} done - callback to _transform
+     * @return {function} executes callback with err if applicable
      */
-    _authenticate(dataToSend: Buffer | null, done: Callback) {
+    _authenticate(dataToSend, done) {
         // use prior sig to construct new string to sign
-        const stringToSign = constructChunkStringToSign(this.timestamp,
-            this.credentialScope, this.lastSignature, dataToSend ?? undefined);
-        this.log.trace('constructed chunk string to sign',
-            { stringToSign });
+        const stringToSign = constructChunkStringToSign(
+            this.timestamp,
+            this.credentialScope,
+            this.lastSignature,
+            dataToSend
+        );
+        this.log.trace('constructed chunk string to sign', { stringToSign });
         // once used prior sig to construct string to sign, reassign
         // lastSignature to current signature
-        this.lastSignature = this.currentSignature!;
-        const vaultParams: AuthV4RequestParams = {
+        this.lastSignature = this.currentSignature;
+        const vaultParams = {
             log: this.log,
             data: {
                 accessKey: this.accessKey,
-                signatureFromRequest: this.currentSignature!,
+                signatureFromRequest: this.currentSignature,
                 region: this.region,
                 scopeDate: this.scopeDate,
                 stringToSign,
-                // TODO FIXME This can not work
-                // @ts-expect-errors
                 timestamp: this.timestamp,
                 credentialScope: this.credentialScope,
             },
         };
-        return this.vault.authenticateV4Request(vaultParams, null, err => {
+        return this.vault.authenticateV4Request(vaultParams, null, (err) => {
             if (err) {
-                this.log.trace('err from vault on streaming v4 auth',
-                    { error: err, paramsSentToVault: vaultParams.data });
+                this.log.trace('err from vault on streaming v4 auth', {
+                    error: err,
+                    paramsSentToVault: vaultParams.data,
+                });
                 return done(err);
             }
             return done();
         });
     }
 
-
     /**
      * This function will parse the chunk into metadata and data,
      * use the metadata to authenticate with vault and send the
      * data on to be stored if authentication passes
      *
-     * @param chunk - chunk from request body
-     * @param _encoding - Data encoding unused
-     * @param callback - Callback(err, justDataChunk, encoding)
-     * @return executes callback with err if applicable
+     * @param {Buffer} chunk - chunk from request body
+     * @param {string} encoding - Data encoding
+     * @param {function} callback - Callback(err, justDataChunk, encoding)
+     * @return {function }executes callback with err if applicable
      */
-    _transform(chunk: Buffer, _encoding: string, callback: Callback) {
+    _transform(chunk, encoding, callback) {
         // 'chunk' here is the node streaming chunk
         // transfer-encoding chunks should be of the format:
         // string(IntHexBase(chunk-size)) + ";chunk-signature=" +
@@ -230,9 +224,10 @@ export default class V4Transform extends Transform {
 
         if (this.lastPieceDone) {
             const slice = chunk.slice(0, 10);
-            this.log.trace('received chunk after end.' +
-            'See first 10 bytes of chunk',
-            { chunk: slice.toString() });
+            this.log.trace(
+                'received chunk after end.' + 'See first 10 bytes of chunk',
+                { chunk: slice.toString() }
+            );
             return callback();
         }
         let unparsedChunk = chunk;
@@ -241,10 +236,11 @@ export default class V4Transform extends Transform {
             // test function
             () => chunkLeftToEvaluate,
             // async function
-            done => {
+            (done) => {
                 if (!this.haveMetadata) {
-                    this.log.trace('do not have metadata so calling ' +
-                    '_parseMetadata');
+                    this.log.trace(
+                        'do not have metadata so calling ' + '_parseMetadata'
+                    );
                     // need to parse our metadata
                     const parsedMetadataResults =
                         this._parseMetadata(unparsedChunk);
@@ -258,13 +254,11 @@ export default class V4Transform extends Transform {
                     }
                     // have metadata so reset unparsedChunk to remaining
                     // without metadata piece
-                    // TODO Is that okay?
-                    // @ts-expect-errors
                     unparsedChunk = parsedMetadataResults.unparsedChunk;
                 }
                 if (this.lastChunk) {
                     this.log.trace('authenticating final chunk with no data');
-                    return this._authenticate(null, err => {
+                    return this._authenticate(null, (err) => {
                         if (err) {
                             return done(err);
                         }
@@ -283,17 +277,18 @@ export default class V4Transform extends Transform {
                 }
                 // parse just the next data piece without \r\n at the end
                 // (therefore, minus 2)
-                const nextDataPiece =
-                    unparsedChunk.slice(0, this.seekingDataSize - 2);
+                const nextDataPiece = unparsedChunk.slice(
+                    0,
+                    this.seekingDataSize - 2
+                );
                 // add parsed data piece to other currentData pieces
                 // so that this.currentData is the full data piece
                 nextDataPiece.copy(this.currentData, this.dataCursor);
-                return this._authenticate(this.currentData, err => {
+                return this._authenticate(this.currentData, (err) => {
                     if (err) {
                         return done(err);
                     }
-                    unparsedChunk =
-                        unparsedChunk.slice(this.seekingDataSize);
+                    unparsedChunk = unparsedChunk.slice(this.seekingDataSize);
                     this.push(this.currentData);
                     this.haveMetadata = false;
                     this.seekingDataSize = -1;
@@ -304,13 +299,13 @@ export default class V4Transform extends Transform {
                 });
             },
             // final callback
-            err => {
+            (err) => {
                 if (err) {
-                    return this.cb(err as any);
+                    return this.cb(err);
                 }
                 // get next chunk
                 return callback();
-            },
+            }
         );
     }
 }

lib/auth/v4/streamingV4/constructChunkStringToSign.ts

@@ -3,33 +3,34 @@ import * as constants from '../../../constants';
 
 /**
  * Constructs stringToSign for chunk
- * @param timestamp - date parsed from headers
+ * @param {string} timestamp - date parsed from headers
  * in ISO 8601 format: YYYYMMDDTHHMMSSZ
- * @param credentialScope - items from auth
+ * @param {string} credentialScope - items from auth
  * header plus the string 'aws4_request' joined with '/':
  * timestamp/region/aws-service/aws4_request
- * @param lastSignature - signature from headers or prior chunk
- * @param justDataChunk - data portion of chunk
- * @returns stringToSign
+ * @param {string} lastSignature - signature from headers or prior chunk
+ * @param {string} justDataChunk - data portion of chunk
+ * @returns {string} stringToSign
  */
 export default function constructChunkStringToSign(
     timestamp: string,
     credentialScope: string,
     lastSignature: string,
-    justDataChunk?: Buffer | string,
-) {
-    let currentChunkHash: string;
+    justDataChunk: string
+): string {
+    let currentChunkHash;
     // for last chunk, there will be no data, so use emptyStringHash
     if (!justDataChunk) {
         currentChunkHash = constants.emptyStringHash;
     } else {
-        const hash = crypto.createHash('sha256');
-        const temp = justDataChunk instanceof Buffer
-            ? hash.update(justDataChunk)
-            : hash.update(justDataChunk, 'binary');
-        currentChunkHash = temp.digest('hex');
+        currentChunkHash = crypto.createHash('sha256');
+        currentChunkHash = currentChunkHash
+            .update(justDataChunk, 'binary')
+            .digest('hex');
     }
-    return `AWS4-HMAC-SHA256-PAYLOAD\n${timestamp}\n` +
+    return (
+        `AWS4-HMAC-SHA256-PAYLOAD\n${timestamp}\n` +
         `${credentialScope}\n${lastSignature}\n` +
-        `${constants.emptyStringHash}\n${currentChunkHash}`;
+        `${constants.emptyStringHash}\n${currentChunkHash}`
+    );
 }

lib/auth/v4/timeUtils.ts

@@ -1,11 +1,10 @@
-import { Logger } from 'werelogs';
-
 /**
  * Convert timestamp to milliseconds since Unix Epoch
- * @param timestamp of ISO8601Timestamp format without
+ * @param  {string} timestamp of ISO8601Timestamp format without
  * dashes or colons, e.g. 20160202T220410Z
+ * @return {number} number of milliseconds since Unix Epoch
  */
-export function convertAmzTimeToMs(timestamp: string) {
+export function convertAmzTimeToMs(timestamp) {
     const arr = timestamp.split('');
     // Convert to YYYY-MM-DDTHH:mm:ss.sssZ
     const ISO8601time = `${arr.slice(0, 4).join('')}-${arr[4]}${arr[5]}` +
@@ -14,12 +13,13 @@ export function convertAmzTimeToMs(timestamp: string) {
     return Date.parse(ISO8601time);
 }
 
+
 /**
  * Convert UTC timestamp to ISO 8601 timestamp
- * @param timestamp of UTC form: Fri, 10 Feb 2012 21:34:55 GMT
- * @return ISO8601 timestamp of form: YYYYMMDDTHHMMSSZ
+ * @param  {string} timestamp of UTC form: Fri, 10 Feb 2012 21:34:55 GMT
+ * @return {string} ISO8601 timestamp of form: YYYYMMDDTHHMMSSZ
  */
-export function convertUTCtoISO8601(timestamp: string | number) {
+export function convertUTCtoISO8601(timestamp) {
     // convert to ISO string: YYYY-MM-DDTHH:mm:ss.sssZ.
     const converted = new Date(timestamp).toISOString();
     // Remove "-"s and "."s and milliseconds
@@ -28,13 +28,13 @@ export function convertUTCtoISO8601(timestamp: string | number) {
 
 /**
  * Check whether timestamp predates request or is too old
- * @param timestamp of ISO8601Timestamp format without
+ * @param  {string} timestamp of ISO8601Timestamp format without
  * dashes or colons, e.g. 20160202T220410Z
- * @param expiry - number of seconds signature should be valid
- * @param log - log for request
- * @return true if there is a time problem
+ * @param {number} expiry - number of seconds signature should be valid
+ * @param {object} log - log for request
+ * @return {boolean} true if there is a time problem
  */
-export function checkTimeSkew(timestamp: string, expiry: number, log: Logger) {
+export function checkTimeSkew(timestamp, expiry, log) {
     const currentTime = Date.now();
     const fifteenMinutes = (15 * 60 * 1000);
     const parsedTimestamp = convertAmzTimeToMs(timestamp);

lib/auth/v4/validateInputs.ts

@@ -1,19 +1,15 @@
-import { Logger } from 'werelogs';
 import errors from '../../../lib/errors';
 
 /**
  * Validate Credentials
- * @param credentials - contains accessKey, scopeDate,
+ * @param  {array} credentials - contains accessKey, scopeDate,
  * region, service, requestType
- * @param timestamp - timestamp from request in
+ * @param {string} timestamp - timestamp from request in
  * the format of ISO 8601: YYYYMMDDTHHMMSSZ
- * @param log - logging object
+ * @param {object} log - logging object
+ * @return {boolean} true if credentials are correct format, false if not
  */
-export function validateCredentials(
-    credentials: [string, string, string, string, string],
-    timestamp: string,
-    log: Logger
-): Error | {} {
+export function validateCredentials(credentials, timestamp, log) {
     if (!Array.isArray(credentials) || credentials.length !== 5) {
         log.warn('credentials in improper format', { credentials });
         return errors.InvalidArgument;
@@ -39,20 +35,27 @@ export function validateCredentials(
     // convert timestamp to format of scopeDate YYYYMMDD
     const timestampDate = timestamp.split('T')[0];
     if (scopeDate.length !== 8 || scopeDate !== timestampDate) {
-        log.warn('scope date must be the same date as the timestamp date',
-            { scopeDate, timestampDate });
+        log.warn('scope date must be the same date as the timestamp date', {
+            scopeDate,
+            timestampDate,
+        });
         return errors.RequestTimeTooSkewed;
     }
-    if (service !== 's3' && service !== 'iam' && service !== 'ring' &&
-        service !== 'sts') {
+    if (
+        service !== 's3' &&
+        service !== 'iam' &&
+        service !== 'ring' &&
+        service !== 'sts'
+    ) {
         log.warn('service in credentials is not one of s3/iam/ring/sts', {
             service,
         });
         return errors.InvalidArgument;
     }
     if (requestType !== 'aws4_request') {
-        log.warn('requestType contained in params is not aws4_request',
-            { requestType });
+        log.warn('requestType contained in params is not aws4_request', {
+            requestType,
+        });
         return errors.InvalidArgument;
     }
     return {};
@@ -60,26 +63,18 @@ export function validateCredentials(
 
 /**
  * Extract and validate components from query object
- * @param  queryObj - query object from request
- * @param log - logging object
- * @return object containing extracted query params for authV4
+ * @param  {object} queryObj - query object from request
+ * @param {object} log - logging object
+ * @return {object} object containing extracted query params for authV4
  */
-export function extractQueryParams(
-    queryObj: { [key: string]: string | undefined },
-    log: Logger
-) {
-    const authParams: {
-        signedHeaders?: string;
-        signatureFromRequest?: string;
-        timestamp?: string;
-        expiry?: number;
-        credential?: [string, string, string, string, string];
-    } = {};
+export function extractQueryParams(queryObj, log) {
+    const authParams = {};
 
     // Do not need the algorithm sent back
     if (queryObj['X-Amz-Algorithm'] !== 'AWS4-HMAC-SHA256') {
-        log.warn('algorithm param incorrect',
-            { algo: queryObj['X-Amz-Algorithm'] });
+        log.warn('algorithm param incorrect', {
+            algo: queryObj['X-Amz-Algorithm'],
+        });
         return authParams;
     }
 
@@ -92,7 +87,6 @@ export function extractQueryParams(
         return authParams;
     }
 
-
     const signature = queryObj['X-Amz-Signature'];
     if (signature && signature.length === 64) {
         authParams.signatureFromRequest = signature;
@@ -105,14 +99,15 @@ export function extractQueryParams(
     if (timestamp && timestamp.length === 16) {
         authParams.timestamp = timestamp;
     } else {
-        log.warn('missing or invalid timestamp',
-            { timestamp: queryObj['X-Amz-Date'] });
+        log.warn('missing or invalid timestamp', {
+            timestamp: queryObj['X-Amz-Date'],
+        });
         return authParams;
     }
 
-    const expiry = Number.parseInt(queryObj['X-Amz-Expires'] ?? 'nope', 10);
+    const expiry = Number.parseInt(queryObj['X-Amz-Expires'], 10);
     const sevenDays = 604800;
-    if (expiry && (expiry > 0 && expiry <= sevenDays)) {
+    if (expiry && expiry > 0 && expiry <= sevenDays) {
         authParams.expiry = expiry;
     } else {
         log.warn('invalid expiry', { expiry });
@@ -121,7 +116,6 @@ export function extractQueryParams(
 
     const credential = queryObj['X-Amz-Credential'];
     if (credential && credential.length > 28 && credential.indexOf('/') > -1) {
-        // @ts-ignore
         authParams.credential = credential.split('/');
     } else {
         log.warn('invalid credential param', { credential });
@@ -130,19 +124,14 @@ export function extractQueryParams(
     return authParams;
 }
 
-
 /**
  * Extract and validate components from auth header
- * @param authHeader - authorization header from request
- * @param log - logging object
- * @return object containing extracted auth header items for authV4
+ * @param  {string} authHeader - authorization header from request
+ * @param {object} log - logging object
+ * @return {object} object containing extracted auth header items for authV4
  */
-export function extractAuthItems(authHeader: string, log: Logger) {
-    const authItems: {
-        credentialsArr?: [string, string, string, string, string];
-        signedHeaders?: string;
-        signatureFromRequest?: string;
-    } = {};
+export function extractAuthItems(authHeader, log) {
+    const authItems = {};
     const authArray = authHeader.replace('AWS4-HMAC-SHA256 ', '').split(',');
 
     if (authArray.length < 3) {
@@ -158,24 +147,29 @@ export function extractAuthItems(authHeader: string, log: Logger) {
         credentialStr.trim().startsWith('Credential=') &&
         credentialStr.indexOf('/') > -1
     ) {
-        // @ts-ignore
         authItems.credentialsArr = credentialStr
-            .trim().replace('Credential=', '').split('/');
+            .trim()
+            .replace('Credential=', '')
+            .split('/');
     } else {
         log.warn('missing credentials');
     }
     log.trace('signed headers from request', { signedHeadersStr });
-    if (signedHeadersStr && signedHeadersStr.trim()
-        .startsWith('SignedHeaders=')) {
+    if (
+        signedHeadersStr &&
+        signedHeadersStr.trim().startsWith('SignedHeaders=')
+    ) {
         authItems.signedHeaders = signedHeadersStr
-            .trim().replace('SignedHeaders=', '');
+            .trim()
+            .replace('SignedHeaders=', '');
     } else {
         log.warn('missing signed headers');
     }
     log.trace('signature from request', { signatureStr });
     if (signatureStr && signatureStr.trim().startsWith('Signature=')) {
         authItems.signatureFromRequest = signatureStr
-            .trim().replace('Signature=', '');
+            .trim()
+            .replace('Signature=', '');
     } else {
         log.warn('missing signature');
     }
@@ -185,20 +179,22 @@ export function extractAuthItems(authHeader: string, log: Logger) {
 /**
  * Checks whether the signed headers include the host header
  * and all x-amz- and x-scal- headers in request
- * @param signedHeaders - signed headers sent with request
- * @param allHeaders - request.headers
- * @return true if all x-amz-headers included and false if not
+ * @param {string} signedHeaders - signed headers sent with request
+ * @param {object} allHeaders - request.headers
+ * @return {boolean} true if all x-amz-headers included and false if not
  */
-export function areSignedHeadersComplete(signedHeaders: string, allHeaders: Headers) {
+export function areSignedHeadersComplete(signedHeaders, allHeaders) {
     const signedHeadersList = signedHeaders.split(';');
     if (signedHeadersList.indexOf('host') === -1) {
         return false;
     }
     const headers = Object.keys(allHeaders);
     for (let i = 0; i < headers.length; i++) {
-        if ((headers[i].startsWith('x-amz-')
-        || headers[i].startsWith('x-scal-'))
-        && signedHeadersList.indexOf(headers[i]) === -1) {
+        if (
+            (headers[i].startsWith('x-amz-') ||
+                headers[i].startsWith('x-scal-')) &&
+            signedHeadersList.indexOf(headers[i]) === -1
+        ) {
             return false;
         }
     }

lib/clustering/ClusterRPC.ts

@@ -1,569 +0,0 @@
-import cluster, { Worker } from 'cluster';
-import * as werelogs from 'werelogs';
-
-import { default as errors } from '../../lib/errors';
-
-const rpcLogger = new werelogs.Logger('ClusterRPC');
-
-/**
- * Remote procedure calls support between cluster workers.
- *
- * When using the cluster module, new processes are forked and are
- * dispatched workloads, usually HTTP requests. The ClusterRPC module
- * implements a RPC system to send commands to all cluster worker
- * processes at once from any particular worker, and retrieve their
- * individual command results, like a distributed map operation.
- *
- * The existing nodejs cluster IPC channel is setup from the primary
- * to each worker, but not between workers, so there has to be a hop
- * by the primary.
- *
- * How a command is treated:
- *
- * - a worker sends a command message to the primary
- *
- * - the primary then forwards that command to each existing worker
- *   (including the requestor)
- *
- * - each worker then executes the command and returns a result or an
- *   error
- *
- * - the primary gathers all workers results into an array
- *
- * - finally, the primary dispatches the results array to the original
- *   requesting worker
- *
- *
- * Limitations:
- *
- * - The command payload must be serializable, which means that:
- *   - it should not contain circular references
- *   - it should be of a reasonable size to be sent in a single RPC message
- *
- * - The "toWorkers" parameter of value "*" targets the set of workers
- *   that are available at the time the command is dispatched. Any new
- *   worker spawned after the command has been dispatched for
- *   processing, but before the command completes, don't execute
- *   the command and hence are not part of the results array.
- *
- *
- * To set it up:
- *
- * - On the primary:
- *     if (cluster.isPrimary) {
- *         setupRPCPrimary();
- *     }
- *
- * - On the workers:
- *     if (!cluster.isPrimary) {
- *         setupRPCWorker({
- *             handler1: (payload: object, uids: string, callback: HandlerCallback) => void,
- *             handler2: ...
- *         });
- *     }
- *     Handler functions will be passed the command payload, request
- *     serialized uids, and must call the callback when the worker is done
- *     processing the command:
- *         callback(error: Error | null | undefined, result?: any)
- *
- * When this setup is done, any worker can start sending commands by calling
- * the async function sendWorkerCommand().
- */
-
-// exported types
-
-export type ResultObject = {
-    error: Error | null;
-    result: any;
-};
-
-/**
- * saved Promise for sendWorkerCommand
- */
-export type CommandPromise = {
-    resolve: (results?: ResultObject[]) => void;
-    reject: (error: Error) => void;
-    timeout: NodeJS.Timeout | null;
-};
-export type HandlerCallback = (error: (Error & { code?: number }) | null | undefined, result?: any) => void;
-export type HandlerFunction = (payload: object, uids: string, callback: HandlerCallback) => void;
-export type HandlersMap = {
-    [index: string]: HandlerFunction;
-};
-export type PrimaryHandlerFunction = (worker: Worker, payload: object, uids: string, callback: HandlerCallback) => void;
-export type PrimaryHandlersMap = Record<string, PrimaryHandlerFunction>;
-
-// private types
-
-type RPCMessage<T extends string, P> = {
-    type: T;
-    uids: string;
-    payload: P;
-};
-
-type RPCCommandMessage = RPCMessage<'cluster-rpc:command', any> & {
-    toWorkers: string;
-    toHandler: string;
-};
-
-type MarshalledResultObject = {
-    error: string | null;
-    errorCode?: number;
-    result: any;
-};
-
-type RPCCommandResultMessage = RPCMessage<'cluster-rpc:commandResult', MarshalledResultObject>;
-
-type RPCCommandResultsMessage = RPCMessage<'cluster-rpc:commandResults', {
-    results: MarshalledResultObject[];
-}>;
-
-type RPCCommandErrorMessage = RPCMessage<'cluster-rpc:commandError', {
-    error: string;
-}>;
-
-interface RPCSetupOptions {
-    /**
-     * As werelogs is not a peerDependency, arsenal and a parent project
-     * might have their own separate versions duplicated in dependencies.
-     * The config are therefore not shared.
-     * Use this to propagate werelogs config to arsenal's ClusterRPC.
-     */
-    werelogsConfig?: Parameters<typeof werelogs.configure>[0];
-};
-
-/**
- * In primary: store worker IDs that are waiting to be dispatched
- * their command's results, as a mapping.
- */
-const uidsToWorkerId: {
-    [index: string]: number;
-} = {};
-
-
-/**
- * In primary: store worker responses for commands in progress as a
- * mapping.
- *
- * Result objects are 'null' while the worker is still processing the
- * command. When a worker finishes processing it stores the result as:
- *    {
- *        error: string | null,
- *        result: any
- *    }
- */
-const uidsToCommandResults: {
-    [index: string]: {
-        [index: number]: MarshalledResultObject | null;
-    };
-} = {};
-
-/**
- * In workers: store promise callbacks for commands waiting to be
- * dispatched, as a mapping.
- */
-const uidsToCommandPromise: {
-    [index: string]: CommandPromise;
-} = {};
-
-
-function _isRpcMessage(message) {
-    return (message !== null &&
-            typeof message === 'object' &&
-            typeof message.type === 'string' &&
-            message.type.startsWith('cluster-rpc:'));
-}
-
-/**
- * Setup cluster RPC system on the primary
- *
- * @param {object} [handlers] - mapping of handler names to handler functions
- *     handler function:
- *         `handler({Worker} worker, {object} payload, {string} uids, {function} callback)`
- *     handler callback must be called when worker is done with the command:
- *         `callback({Error|null} error, {any} [result])`
- * @return {undefined}
- */
-export function setupRPCPrimary(handlers?: PrimaryHandlersMap, options?: RPCSetupOptions) {
-    if (options?.werelogsConfig) {
-        werelogs.configure(options.werelogsConfig);
-    }
-    cluster.on('message', (worker, message) => {
-        if (_isRpcMessage(message)) {
-            _handlePrimaryMessage(worker, message, handlers);
-        }
-    });
-}
-
-/**
- * Setup RPCs on a cluster worker process
- *
- * @param {object} handlers - mapping of handler names to handler functions
- *     handler function:
- *         handler({object} payload, {string} uids, {function} callback)
- *     handler callback must be called when worker is done with the command:
- *         callback({Error|null} error, {any} [result])
- * @return {undefined}
- * }
- */
-export function setupRPCWorker(handlers: HandlersMap, options?: RPCSetupOptions) {
-    if (!process.send) {
-        throw new Error('fatal: cannot setup cluster RPC: "process.send" is not available');
-    }
-    if (options?.werelogsConfig) {
-        werelogs.configure(options.werelogsConfig);
-    }
-    process.on('message', (message: RPCCommandMessage | RPCCommandResultsMessage) => {
-        if (_isRpcMessage(message)) {
-            _handleWorkerMessage(message, handlers);
-        }
-    });
-}
-
-/**
- * Send a command for workers to execute in parallel, and wait for results
- *
- * @param {string} toWorkers - which workers should execute the command
- *     Currently the supported values are:
- *         - "*", meaning all workers will execute the command
- *         - "PRIMARY", meaning primary process will execute the command
- * @param {string} toHandler - name of handler that will execute the
- * command in workers, as declared in setupRPCWorker() parameter object
- * @param {string} uids - unique identifier of the command, must be
- * unique across all commands in progress
- * @param {object} payload - message payload, sent as-is to the handler
- * @param {number} [timeoutMs=60000] - timeout the command with a
- * "RequestTimeout" error after this number of milliseconds - set to 0
- * to disable timeouts (the command may then hang forever)
- * @returns {Promise}
- */
-export async function sendWorkerCommand(
-    toWorkers: string,
-    toHandler: string,
-    uids: string,
-    payload: object,
-    timeoutMs: number = 60000
-) {
-    if (typeof uids !== 'string') {
-        rpcLogger.error('missing or invalid "uids" field', { uids });
-        throw errors.MissingParameter;
-    }
-    if (uidsToCommandPromise[uids] !== undefined) {
-        rpcLogger.error('a command is already in progress with same uids', { uids });
-        throw errors.OperationAborted;
-    }
-    rpcLogger.info('sending command', { toWorkers, toHandler, uids, payload });
-    return new Promise((resolve, reject) => {
-        let timeout: NodeJS.Timeout | null = null;
-        if (timeoutMs) {
-            timeout = setTimeout(() => {
-                delete uidsToCommandPromise[uids];
-                reject(errors.RequestTimeout);
-            }, timeoutMs);
-        }
-        uidsToCommandPromise[uids] = { resolve, reject, timeout };
-        const message: RPCCommandMessage = {
-            type: 'cluster-rpc:command',
-            toWorkers,
-            toHandler,
-            uids,
-            payload,
-        };
-        return process.send?.(message);
-    });
-}
-
-/**
- * Get the number of commands in flight
- * @returns {number}
- */
-export function getPendingCommandsCount() {
-    return Object.keys(uidsToCommandPromise).length;
-}
-
-
-function _dispatchCommandResultsToWorker(
-    worker: Worker,
-    uids: string,
-    resultsArray: MarshalledResultObject[]
-): void {
-    const message: RPCCommandResultsMessage = {
-        type: 'cluster-rpc:commandResults',
-        uids,
-        payload: {
-            results: resultsArray,
-        },
-    };
-    worker.send(message);
-}
-
-function _dispatchCommandErrorToWorker(
-    worker: Worker,
-    uids: string,
-    error: Error,
-): void {
-    const message: RPCCommandErrorMessage = {
-        type: 'cluster-rpc:commandError',
-        uids,
-        payload: {
-            error: error.message,
-        },
-    };
-    worker.send(message);
-}
-
-function _sendPrimaryCommandResult(
-    worker: Worker,
-    uids: string,
-    error: (Error & { code?: number }) | null | undefined,
-    result?: any
-): void {
-    const message: RPCCommandResultsMessage = {
-        type: 'cluster-rpc:commandResults',
-        uids,
-        payload: {
-            results: [{ error: error?.message || null, errorCode: error?.code, result }],
-        },
-    };
-    worker.send?.(message);
-}
-
-function _handlePrimaryCommandMessage(
-    fromWorker: Worker,
-    logger: any,
-    message: RPCCommandMessage,
-    handlers?: PrimaryHandlersMap
-): void {
-    const { toWorkers, toHandler, uids, payload } = message;
-    if (toWorkers === '*') {
-        if (uidsToWorkerId[uids] !== undefined) {
-            logger.warn('new command already has a waiting worker with same uids', {
-                uids, workerId: uidsToWorkerId[uids],
-            });
-            return undefined;
-        }
-        const commandResults = {};
-        for (const workerId of Object.keys(cluster.workers || {})) {
-            commandResults[workerId] = null;
-        }
-        uidsToWorkerId[uids] = fromWorker?.id;
-        uidsToCommandResults[uids] = commandResults;
-
-        for (const [workerId, worker] of Object.entries(cluster.workers || {})) {
-            logger.debug('sending command message to worker', {
-                workerId, toHandler, payload,
-            });
-            if (worker) {
-                worker.send(message);
-            }
-        }
-    } else if (toWorkers === 'PRIMARY') {
-        const { toHandler, uids, payload } = message;
-        const cb: HandlerCallback = (err, result) => _sendPrimaryCommandResult(fromWorker, uids, err, result);
-
-        if (toHandler in (handlers || {})) {
-            return handlers![toHandler](fromWorker, payload, uids, cb);
-        }
-        logger.error('no such handler in "toHandler" field from worker command message', {
-            toHandler,
-        });
-        return cb(errors.NotImplemented);
-    } else {
-        logger.error('unsupported "toWorkers" field from worker command message', {
-            toWorkers,
-        });
-        if (fromWorker) {
-            _dispatchCommandErrorToWorker(fromWorker, uids, errors.NotImplemented);
-        }
-    }
-}
-
-function _handlePrimaryCommandResultMessage(
-    fromWorkerId: number,
-    logger: any,
-    message: RPCCommandResultMessage
-): void {
-    const { uids, payload } = message;
-    const commandResults = uidsToCommandResults[uids];
-    if (!commandResults) {
-        logger.warn('received command response message from worker for command not in flight', {
-            workerId: fromWorkerId,
-            uids,
-        });
-        return undefined;
-    }
-    if (commandResults[fromWorkerId] === undefined) {
-        logger.warn('received command response message with unexpected worker ID', {
-            workerId: fromWorkerId,
-            uids,
-        });
-        return undefined;
-    }
-    if (commandResults[fromWorkerId] !== null) {
-        logger.warn('ignoring duplicate command response from worker', {
-            workerId: fromWorkerId,
-            uids,
-        });
-        return undefined;
-    }
-    commandResults[fromWorkerId] = payload;
-    const commandResultsArray = Object.values(commandResults);
-    if (commandResultsArray.every(response => response !== null)) {
-        logger.debug('all workers responded to command', { uids });
-        const completeCommandResultsArray = <MarshalledResultObject[]> commandResultsArray;
-        const toWorkerId = uidsToWorkerId[uids];
-        const toWorker = cluster.workers?.[toWorkerId];
-
-        delete uidsToCommandResults[uids];
-        delete uidsToWorkerId[uids];
-
-        if (!toWorker) {
-            logger.warn('worker shut down while its command was executing', {
-                workerId: toWorkerId, uids,
-            });
-            return undefined;
-        }
-        // send back response to original worker
-        _dispatchCommandResultsToWorker(toWorker, uids, completeCommandResultsArray);
-    }
-}
-
-function _handlePrimaryMessage(
-    fromWorker: Worker,
-    message: RPCCommandMessage | RPCCommandResultMessage,
-    handlers?: PrimaryHandlersMap
-): void {
-    const { type: messageType, uids } = message;
-    const logger = rpcLogger.newRequestLoggerFromSerializedUids(uids);
-    logger.debug('primary received message from worker', {
-        workerId: fromWorker?.id, rpcMessage: message,
-    });
-    if (messageType === 'cluster-rpc:command') {
-        return _handlePrimaryCommandMessage(fromWorker, logger, message, handlers);
-    }
-    if (messageType === 'cluster-rpc:commandResult') {
-        return _handlePrimaryCommandResultMessage(fromWorker?.id, logger, message);
-    }
-    logger.error('unsupported message type', {
-        workerId: fromWorker?.id, messageType, uids,
-    });
-    return undefined;
-}
-
-function _sendWorkerCommandResult(
-    uids: string,
-    error: Error | null | undefined,
-    result?: any
-): void {
-    const message: RPCCommandResultMessage = {
-        type: 'cluster-rpc:commandResult',
-        uids,
-        payload: {
-            error: error ? error.message : null,
-            result,
-        },
-    };
-    process.send?.(message);
-}
-
-function _handleWorkerCommandMessage(
-    logger: any,
-    message: RPCCommandMessage,
-    handlers: HandlersMap
-): void {
-    const { toHandler, uids, payload } = message;
-    const cb: HandlerCallback = (err, result) => _sendWorkerCommandResult(uids, err, result);
-
-    if (toHandler in handlers) {
-        return handlers[toHandler](payload, uids, cb);
-    }
-    logger.error('no such handler in "toHandler" field from worker command message', {
-        toHandler,
-    });
-    return cb(errors.NotImplemented);
-}
-
-function _handleWorkerCommandResultsMessage(
-    logger: any,
-    message: RPCCommandResultsMessage,
-): void {
-    const { uids, payload } = message;
-    const { results } = payload;
-    const commandPromise: CommandPromise = uidsToCommandPromise[uids];
-    if (commandPromise === undefined) {
-        logger.error('missing promise for command results', { uids, payload });
-        return undefined;
-    }
-    if (commandPromise.timeout) {
-        clearTimeout(commandPromise.timeout);
-    }
-    delete uidsToCommandPromise[uids];
-    const unmarshalledResults = results.map(workerResult => {
-        let workerError: Error | null = null;
-        if (workerResult.error) {
-            if (workerResult.error in errors) {
-                workerError = errors[workerResult.error];
-            } else {
-                workerError = new Error(workerResult.error);
-            }
-        }
-        if (workerError && workerResult.errorCode) {
-            (workerError as Error & { code: number }).code = workerResult.errorCode;
-        }
-        const unmarshalledResult: ResultObject = {
-            error: workerError,
-            result: workerResult.result,
-        };
-        return unmarshalledResult;
-    });
-    return commandPromise.resolve(unmarshalledResults);
-}
-
-function _handleWorkerCommandErrorMessage(
-    logger: any,
-    message: RPCCommandErrorMessage,
-): void {
-    const { uids, payload } = message;
-    const { error } = payload;
-    const commandPromise: CommandPromise = uidsToCommandPromise[uids];
-    if (commandPromise === undefined) {
-        logger.error('missing promise for command results', { uids, payload });
-        return undefined;
-    }
-    if (commandPromise.timeout) {
-        clearTimeout(commandPromise.timeout);
-    }
-    delete uidsToCommandPromise[uids];
-    let commandError: Error | null = null;
-    if (error in errors) {
-        commandError = errors[error];
-    } else {
-        commandError = new Error(error);
-    }
-    return commandPromise.reject(<Error> commandError);
-}
-
-function _handleWorkerMessage(
-    message: RPCCommandMessage | RPCCommandResultsMessage | RPCCommandErrorMessage,
-    handlers: HandlersMap
-): void {
-    const { type: messageType, uids } = message;
-    const workerId = cluster.worker?.id;
-    const logger = rpcLogger.newRequestLoggerFromSerializedUids(uids);
-    logger.debug('worker received message from primary', {
-        workerId, rpcMessage: message,
-    });
-    if (messageType === 'cluster-rpc:command') {
-        return _handleWorkerCommandMessage(logger, message, handlers);
-    }
-    if (messageType === 'cluster-rpc:commandResults') {
-        return _handleWorkerCommandResultsMessage(logger, message);
-    }
-    if (messageType === 'cluster-rpc:commandError') {
-        return _handleWorkerCommandErrorMessage(logger, message);
-    }
-    logger.error('unsupported message type', {
-        workerId, messageType,
-    });
-    return undefined;
-}

lib/constants.ts

@@ -1,13 +1,12 @@
 import * as crypto from 'crypto';
 
-// The min value here is to manage further backward compat if we
-// need it
+// The min value here is to manage further backward compat if we need it
 // Default value
-export const vaultGeneratedIamSecurityTokenSizeMin = 128;
+const vaultGeneratedIamSecurityTokenSizeMin = 128;
 // Safe to assume that a typical token size is less than 8192 bytes
-export const vaultGeneratedIamSecurityTokenSizeMax = 8192;
+const vaultGeneratedIamSecurityTokenSizeMax = 8192;
 // Base-64
-export const vaultGeneratedIamSecurityTokenPattern = /^[A-Za-z0-9/+=]*$/;
+const vaultGeneratedIamSecurityTokenPattern = /^[A-Za-z0-9/+=]*$/;
 
 // info about the iam security token
 export const iamSecurityToken = {
@@ -35,13 +34,7 @@ export const emptyFileMd5 = 'd41d8cd98f00b204e9800998ecf8427e';
 // Version 4 add the Creation-Time and Content-Language attributes,
 //     and add support for x-ms-meta-* headers in UserMetadata
 // Version 5 adds the azureInfo structure
-// Version 6 adds a "deleted" flag that is updated to true before
-// the object gets deleted. This is done to keep object metadata in the
-// oplog when deleting the object, as oplog deletion events don't contain
-// any metadata of the object.
-// version 6 also adds the "isPHD" flag that is used to indicate that the master
-// object is a placeholder and is not up to date.
-export const mdModelVersion = 6;
+export const mdModelVersion = 5;
 /*
  * Splitter is used to build the object name for the overview of a
  * multipart upload and to build the object names for each part of a
@@ -94,6 +87,7 @@ export const zenkoSeparator = ':';
 /* eslint-disable camelcase */
 export const externalBackends = { aws_s3: true, azure: true, gcp: true, pfs: true };
 export const replicationBackends = { aws_s3: true, azure: true, gcp: true };
+
 // hex digest of sha256 hash of empty string:
 export const emptyStringHash = crypto.createHash('sha256')
     .update('', 'binary').digest('hex');
@@ -132,19 +126,6 @@ export const supportedNotificationEvents = new Set([
     's3:ObjectRemoved:*',
     's3:ObjectRemoved:Delete',
     's3:ObjectRemoved:DeleteMarkerCreated',
-    's3:Replication:OperationFailedReplication',
-    's3:ObjectTagging:*',
-    's3:ObjectTagging:Put',
-    's3:ObjectTagging:Delete',
-    's3:ObjectAcl:Put',
-    's3:ObjectRestore:*',
-    's3:ObjectRestore:Post',
-    's3:ObjectRestore:Completed',
-    's3:ObjectRestore:Delete',
-    's3:LifecycleTransition',
-    's3:LifecycleExpiration:*',
-    's3:LifecycleExpiration:DeleteMarkerCreated',
-    's3:LifecycleExpiration:Delete',
 ]);
 export const notificationArnPrefix = 'arn:scality:bucketnotif';
 // HTTP server keep-alive timeout is set to a higher value than
@@ -163,15 +144,4 @@ export const supportedLifecycleRules = [
     'expiration',
     'noncurrentVersionExpiration',
     'abortIncompleteMultipartUpload',
-    'transitions',
-    'noncurrentVersionTransition',
 ];
-// Maximum number of buckets to cache (bucket metadata)
-export const maxCachedBuckets = process.env.METADATA_MAX_CACHED_BUCKETS ?
-    Number(process.env.METADATA_MAX_CACHED_BUCKETS) : 1000;
-
-export const validRestoreObjectTiers = new Set(['Expedited', 'Standard', 'Bulk']);
-export const maxBatchingConcurrentOperations = 5;
-
-/** For policy resource arn check we allow empty account ID to not break compatibility */
-export const policyArnAllowedEmptyAccountId = ['utapi', 'scuba'];

lib/db.ts

@@ -1,3 +1,7 @@
+import { LevelDB } from 'level';
+
+const writeOptions = { sync: true };
+
 /**
  * Like Error, but with a property set to true.
  * TODO: this is copied from kineticlib, should consolidate with the
@@ -10,15 +14,13 @@
  * use:
  *     throw propError("badTypeInput", "input is not a buffer");
  *
- * @param propName - the property name.
- * @param message - the Error message.
- * @returns the Error object.
+ * @param {String} propName - the property name.
+ * @param {String} message - the Error message.
+ * @returns {Error} the Error object.
  */
 function propError(propName: string, message: string): Error {
     const err = new Error(message);
     err[propName] = true;
-    // @ts-ignore
-    err.is = { [propName]: true };
     return err;
 }
 
@@ -26,20 +28,15 @@ function propError(propName: string, message: string): Error {
  * Running transaction with multiple updates to be committed atomically
  */
 export class IndexTransaction {
-    operations: { type: 'put' | 'del'; key: string; value?: any }[];
-    db: any;
-    closed: boolean;
-    conditions: { [key: string]: string }[];
-
     /**
      * Builds a new transaction
      *
      * @argument {Leveldb} db an open database to which the updates
      *                     will be applied
      *
-     * @returns a new empty transaction
+     * @returns {IndexTransaction} a new empty transaction
      */
-    constructor(db: any) {
+    constructor(db: LevelDB) {
         this.operations = [];
         this.db = db;
         this.closed = false;
@@ -49,22 +46,22 @@ export class IndexTransaction {
     /**
      * Adds a new operation to participate in this running transaction
      *
-     * @argument op an object with the following attributes:
+     * @argument {object} op an object with the following attributes:
      *                    {
      *                      type: 'put' or 'del',
      *                      key: the object key,
      *                      value: (optional for del) the value to store,
      *                    }
      *
-     * @throws an error described by the following properties
+     * @throws {Error} an error described by the following properties
      *                 - invalidTransactionVerb if op is not put or del
      *                 - pushOnCommittedTransaction if already committed
      *                 - missingKey if the key is missing from the op
      *                 - missingValue if putting without a value
+     *
+     * @returns {undefined}
      */
-    push(op: { type: 'put'; key: string; value: any }): void;
-    push(op: { type: 'del'; key: string }): void;
-    push(op: { type: 'put' | 'del'; key: string; value?: any }): void {
+    push(op) {
         if (this.closed) {
             throw propError(
                 'pushOnCommittedTransaction',
@@ -100,42 +97,48 @@ export class IndexTransaction {
      *                 - pushOnCommittedTransaction if already committed
      *                 - missingKey if the key is missing from the op
      *                 - missingValue if putting without a value
+     *
+     * @returns {undefined}
+     *
      * @see push
      */
-    put(key: string, value: any) {
+    put(key, value) {
         this.push({ type: 'put', key, value });
     }
 
     /**
      * Adds a new del operation to this running transaction
      *
-     * @argument key - the key of the object to delete
+     * @argument {string} key - the key of the object to delete
      *
-     * @throws an error described by the following properties
+     * @throws {Error} an error described by the following properties
      *                 - pushOnCommittedTransaction if already committed
      *                 - missingKey if the key is missing from the op
      *
+     * @returns {undefined}
+     *
      * @see push
      */
-    del(key: string) {
+    del(key) {
         this.push({ type: 'del', key });
     }
 
     /**
      * Adds a condition for the transaction
      *
-     * @argument condition an object with the following attributes:
+     * @argument {object} condition an object with the following attributes:
      *                    {
      *                      <condition>: the object key
      *                    }
      *                    example: { notExists: 'key1' }
      *
-     * @throws an error described by the following properties
+     * @throws {Error} an error described by the following properties
      *                 - pushOnCommittedTransaction if already committed
      *                 - missingCondition if the condition is empty
      *
+     * @returns {undefined}
      */
-    addCondition(condition: { [key: string]: string }) {
+    addCondition(condition) {
         if (this.closed) {
             throw propError(
                 'pushOnCommittedTransaction',
@@ -148,7 +151,7 @@ export class IndexTransaction {
                 'missing condition for conditional put'
             );
         }
-        if (typeof condition.notExists !== 'string' && typeof condition.exists !== 'string') {
+        if (typeof condition.notExists !== 'string') {
             throw propError(
                 'unsupportedConditionalOperation',
                 'missing key or supported condition'
@@ -160,11 +163,12 @@ export class IndexTransaction {
     /**
      * Applies the queued updates in this transaction atomically.
      *
-     * @argument cb function to be called when the commit
+     * @argument {function} cb function to be called when the commit
      *              finishes, taking an optional error argument
      *
+     * @returns {undefined}
      */
-    commit(cb: (error: Error | null, data?: any) => void) {
+    commit(cb) {
         if (this.closed) {
             return cb(
                 propError(
@@ -184,11 +188,11 @@ export class IndexTransaction {
         }
 
         this.closed = true;
-        const options = { sync: true, conditions: this.conditions };
+        writeOptions.conditions = this.conditions;
 
         // The array-of-operations variant of the `batch` method
         // allows passing options such has `sync: true` whereas the
         // chained form does not.
-        return this.db.batch(this.operations, options, cb);
+        return this.db.batch(this.operations, writeOptions, cb);
     }
 }

lib/errorUtils.ts

@@ -1,11 +1,9 @@
-export interface ErrorLike {
-    message: any;
-    code: any;
-    stack: any;
-    name: any;
-}
-
-export function reshapeExceptionError(error: ErrorLike) {
+export function reshapeExceptionError(error) {
     const { message, code, stack, name } = error;
-    return { message, code, stack, name };
+    return {
+        message,
+        code,
+        stack,
+        name,
+    };
 }

lib/errors.ts

@@ -0,0 +1,79 @@
+import errorsObj from '../errors/arsenalErrors.json';
+
+/**
+ * ArsenalError
+ *
+ * @extends {Error}
+ */
+export class ArsenalError extends Error {
+    code: number
+    description: string
+
+    /**
+     * constructor.
+     *
+     * @param {string} type - Type of error or message
+     * @param {number} code - HTTP status code
+     * @param {string} desc - Verbose description of error
+     */
+    constructor(type: string, code: number, desc: string) {
+        super(type);
+
+        /**
+         * HTTP status code of error
+         * @type {number}
+         */
+        this.code = code;
+
+        /**
+         * Description of error
+         * @type {string}
+         */
+        this.description = desc;
+
+        this[type] = true;
+    }
+
+    /**
+     * Output the error as a JSON string
+     * @returns {string} Error as JSON string
+     */
+    toString() {
+        return JSON.stringify({
+            errorType: this.message,
+            errorMessage: this.description,
+        });
+    }
+
+    /**
+     * Write the error in an HTTP response
+     *
+     * @param { http.ServerResponse } res - Response we are responding to
+     * @returns {undefined}
+     */
+    writeResponse(res) {
+        res.writeHead(this.code);
+        res.end(this.toString());
+    }
+
+    /**
+     * customizeDescription returns a new ArsenalError with a new description
+     * with the same HTTP code and message.
+     *
+     * @param {string} description - New error description
+     * @returns {ArsenalError} New error
+     */
+    customizeDescription(description) {
+        return new ArsenalError(this.message, this.code, description);
+    }
+}
+
+const errors: { [key: string]: ArsenalError } = {};
+Object.keys(errorsObj)
+    .filter((index) => index !== '_comment')
+    .forEach((index) => {
+        const { code, description } = errorsObj[index];
+        errors[index] = new ArsenalError(index, code, description);
+    });
+
+export default errors;

lib/errors/index.ts

@@ -1,175 +0,0 @@
-import type { ServerResponse } from 'http';
-import * as rawErrors from './arsenalErrors';
-
-/** All possible errors names. */
-export type Name = keyof typeof rawErrors;
-/** Object containing all errors names. It has the format { [Name]: "Name" } */
-export type Names = { [Name_ in Name]: Name_ };
-/** Mapping used to determine an error type. It has the format { [Name]: boolean } */
-export type Is = { [_ in Name]: boolean };
-/** Mapping of all possible Errors. It has the format { [Name]: Error } */
-export type Errors = { [_ in Name]: ArsenalError };
-
-// This object is reused constantly through createIs, we store it there
-// to avoid recomputation.
-const isBase = Object.fromEntries(
-    Object.keys(rawErrors).map((key) => [key, false])
-) as Is;
-
-// This allows to conditionally add the old behavior of errors to properly
-// test migration.
-// Activate CI tests with `ALLOW_UNSAFE_ERROR_COMPARISON=false yarn test`.
-// Remove this mechanism in ARSN-176.
-export const allowUnsafeErrComp = (
-    process.env.ALLOW_UNSAFE_ERROR_COMPARISON ?? 'true') === 'true'
-
-// This contains some metaprog. Be careful.
-// Proxy can be found on MDN.
-// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Proxy
-// While this could seems better to avoid metaprog, this allows us to enforce
-// type-checking properly while avoiding all errors that could happen at runtime.
-// Even if some errors are made in JavaScript, like using err.is.NonExistingError,
-// the Proxy will return false.
-const createIs = (type: Name): Is => {
-    const get = (is: Is, value: string | symbol) => is[value] ?? false;
-    const final = Object.freeze({ ...isBase, [type]: true });
-    return new Proxy(final, { get });
-};
-
-export class ArsenalError extends Error {
-    /** HTTP status code. Example: 401, 403, 500, ... */
-    #code: number;
-    /** Text description of the error. */
-    #description: string;
-    /** Type of the error. */
-    #type: Name;
-    /** Object used to determine the error type.
-     * Example: error.is.InternalError */
-    #is: Is;
-    /** A map of error metadata (can be extra fields
-     * that only show in debug mode) */
-    #metadata: Map<string, Object[]>;
-
-    private constructor(type: Name, code: number, description: string,
-        metadata?: Map<string, Object[]>) {
-        super(type);
-        this.#code = code;
-        this.#description = description;
-        this.#type = type;
-        this.#is = createIs(type);
-        this.#metadata = metadata ?? new Map<string, Object[]>();
-
-        // This restores the old behavior of errors, to make sure they're now
-        // backward-compatible. Fortunately it's handled by TS, but it cannot
-        // be type-checked. This means we have to be extremely careful about
-        // what we're doing when using errors.
-        // Disables the feature when in CI tests but not in production.
-        if (allowUnsafeErrComp) {
-            this[type] = true;
-        }
-    }
-
-    /** Output the error as a JSON string */
-    toString() {
-        const errorType = this.message;
-        const errorMessage = this.#description;
-        return JSON.stringify({ errorType, errorMessage });
-    }
-
-    flatten() {
-        return {
-            is_arsenal_error: true,
-            code: this.#code,
-            description: this.#description,
-            type: this.#type,
-            stack: this.stack
-        }
-    }
-
-    static unflatten(flat_obj) {
-        if (!flat_obj.is_arsenal_error) {
-            return null;
-        }
-
-        const err = new ArsenalError(
-            flat_obj.type,
-            flat_obj.code,
-            flat_obj.description
-        )
-        err.stack = flat_obj.stack
-        return err;
-    }
-
-    /** Write the error in an HTTP response */
-    writeResponse(res: ServerResponse) {
-        res.writeHead(this.#code);
-        const asStr = this.toString();
-        res.end(asStr);
-    }
-
-    /** Clone the error with a new description.*/
-    customizeDescription(description: string): ArsenalError {
-        const type = this.#type;
-        const code = this.#code;
-        const metadata = new Map(this.#metadata);
-        const err = new ArsenalError(type, code, description, metadata);
-        err.stack = this.stack;
-        return err;
-    }
-
-    /** Clone the error with a new metadata field */
-    addMetadataEntry(key: string, value: Object[]): ArsenalError {
-        const type = this.#type;
-        const code = this.#code;
-        const description = this.#description;
-        const metadata = new Map(this.#metadata);
-        metadata.set(key, value);
-        const err = new ArsenalError(type, code, description, metadata);
-        err.stack = this.stack;
-        return err;
-    }
-
-    /** Used to determine the error type. Example: error.is.InternalError */
-    get is() {
-        return this.#is;
-    }
-
-    /** HTTP status code. Example: 401, 403, 500, ... */
-    get code() {
-        return this.#code;
-    }
-
-    /** Text description of the error. */
-    get description() {
-        return this.#description;
-    }
-
-    /**
-     * Type of the error, belonging to Name. is should be prefered instead of
-     * type in a daily-basis, but type remains accessible for future use. */
-    get type() {
-        return this.#type;
-    }
-
-    /** A map of error metadata */
-    get metadata() {
-        return this.#metadata;
-    }
-
-    /** Generate all possible errors. An instance is created by default. */
-    static errors() {
-        const errors = {};
-        Object.entries(rawErrors).forEach((value) => {
-            const name = value[0] as Name;
-            const error = value[1];
-            const { code, description } = error;
-            const get = () => new ArsenalError(name, code, description);
-            Object.defineProperty(errors, name, { get });
-        });
-        return errors as Errors;
-    }
-}
-
-/** Mapping of all possible Errors.
- * Use them with errors[error].customizeDescription for any customization. */
-export default ArsenalError.errors();

lib/ipCheck.ts

@@ -3,37 +3,41 @@ import ipaddr from 'ipaddr.js';
 /**
  * checkIPinRangeOrMatch checks whether a given ip address is in an ip address
  * range or matches the given ip address
- * @param cidr - ip address range or ip address
- * @param ip - parsed ip address
- * @return true if in range, false if not
+ * @param {string} cidr - ip address range or ip address
+ * @param {object} ip - parsed ip address
+ * @return {boolean} true if in range, false if not
  */
-export function checkIPinRangeOrMatch(
-    cidr: string,
-    ip: ipaddr.IPv4 | ipaddr.IPv6,
-): boolean {
+export function checkIPinRangeOrMatch(cidr, ip) {
     // If there is an exact match of the ip address, no need to check ranges
     if (ip.toString() === cidr) {
         return true;
     }
+    let range;
+
     try {
-        if (ip instanceof ipaddr.IPv6) {
-            const range = ipaddr.IPv6.parseCIDR(cidr);
-            return ip.match(range);
-        } else {
-            const range = ipaddr.IPv4.parseCIDR(cidr);
-            return ip.match(range);
+        range = ipaddr.IPv4.parseCIDR(cidr);
+    } catch (err) {
+        try {
+        // not ipv4 so try ipv6
+            range = ipaddr.IPv6.parseCIDR(cidr);
+        } catch (err) {
+            // range is not valid ipv4 or ipv6
+            return false;
         }
-    } catch (error) {
+    }
+    try {
+        return ip.match(range);
+    } catch (err) {
         return false;
     }
 }
 
 /**
- * Parse IP address into object representation
- * @param ip - IPV4/IPV6/IPV4-mapped IPV6 address
- * @return parsedIp - Object representation of parsed IP
- */
-export function parseIp(ip: string): ipaddr.IPv4 | ipaddr.IPv6 | {} {
+* Parse IP address into object representation
+* @param {string} ip - IPV4/IPV6/IPV4-mapped IPV6 address
+* @return {object} parsedIp - Object representation of parsed IP
+*/
+export function parseIp(ip) {
     if (ipaddr.IPv4.isValid(ip)) {
         return ipaddr.parse(ip);
     }
@@ -41,19 +45,23 @@ export function parseIp(ip: string): ipaddr.IPv4 | ipaddr.IPv6 | {} {
         // also parses IPv6 mapped IPv4 addresses into IPv4 representation
         return ipaddr.process(ip);
     }
+    // not valid ip address according to module, so return empty object
+    // which will obviously not match a range of ip addresses that the parsedIp
+    // is being tested against
     return {};
 }
 
+
 /**
- * Checks if an IP adress matches a given list of CIDR ranges
- * @param cidrList - List of CIDR ranges
- * @param ip - IP address
- * @return - true if there is match or false for no match
- */
-export function ipMatchCidrList(cidrList: string[], ip: string): boolean {
+* Checks if an IP adress matches a given list of CIDR ranges
+* @param {string[]} cidrList - List of CIDR ranges
+* @param {string} ip - IP address
+* @return {boolean} - true if there is match or false for no match
+*/
+export function ipMatchCidrList(cidrList, ip) {
     const parsedIp = parseIp(ip);
-    return cidrList.some((item) => {
-        let cidr: string | undefined;
+    return cidrList.some(item => {
+        let cidr;
         // patch the cidr if range is not specified
         if (item.indexOf('/') === -1) {
             if (item.startsWith('127.')) {
@@ -62,10 +70,6 @@ export function ipMatchCidrList(cidrList: string[], ip: string): boolean {
                 cidr = `${item}/32`;
             }
         }
-        return (
-            (parsedIp instanceof ipaddr.IPv4 ||
-                parsedIp instanceof ipaddr.IPv6) &&
-            checkIPinRangeOrMatch(cidr || item, parsedIp)
-        );
+        return checkIPinRangeOrMatch(cidr || item, parsedIp);
     });
 }

lib/jsutil.ts

@@ -1,5 +1,5 @@
-import * as util from 'util';
-const debug = util.debuglog('jsutil');
+import { debuglog } from 'util';
+const debug = debuglog('jsutil');
 
 // JavaScript utility functions
 
@@ -11,23 +11,21 @@ const debug = util.debuglog('jsutil');
  * @note underscore.js provides this functionality but not worth
  * adding a new dependency for such a small use case.
  *
- * @param func function to call at most once
+ * @param {function} func function to call at most once
 
- * @return a callable wrapper mirroring <tt>func</tt> but
+ * @return {function} a callable wrapper mirroring <tt>func</tt> but
  * only calls <tt>func</tt> at first invocation.
  */
-export function once<T>(func: (...args: any[]) => T): (...args: any[]) => T {
-    type State = { called: boolean; res: any };
-    const state: State = { called: false, res: undefined };
-    return function wrapper(...args: any[]) {
+export function once(func) {
+    const state = { called: false, res: undefined };
+    return function wrapper(...args) {
         if (!state.called) {
             state.called = true;
             state.res = func.apply(func, args);
         } else {
-            const m1 = 'function already called:';
-            const m2 = 'returning cached result:';
-            debug(m1, func, m2, state.res);
+            debug('function already called:', func,
+                'returning cached result:', state.res);
         }
         return state.res;
     };
-}
+};

lib/metrics/RedisClient.ts

@@ -1,15 +1,19 @@
 import Redis from 'ioredis';
-import { Logger } from 'werelogs';
-
-export type Config = { host: string; port: number; password: string };
-export type Callback = (error: Error | null, value?: any) => void;
 
 export default class RedisClient {
-    _client: Redis.Redis;
+    _client: Redis
 
-    constructor(config: Config, logger: Logger) {
+    /**
+     * @constructor
+     * @param {Object} config - config
+     * @param {string} config.host - Redis host
+     * @param {number} config.port - Redis port
+     * @param {string} config.password - Redis password
+     * @param {werelogs.Logger} logger - logger instance
+     */
+    constructor(config, logger) {
         this._client = new Redis(config);
-        this._client.on('error', err =>
+        this._client.on('error', (err) =>
             logger.trace('error from redis', {
                 error: err,
                 method: 'RedisClient.constructor',
@@ -21,17 +25,18 @@ export default class RedisClient {
     }
 
     /**
-    * scan a pattern and return matching keys
-    * @param pattern - string pattern to match with all existing keys
-    * @param [count=10] - scan count
-    * @param cb - callback (error, result)
-    */
-    scan(pattern: string, count = 10, cb: Callback) {
+     * scan a pattern and return matching keys
+     * @param {string} pattern - string pattern to match with all existing keys
+     * @param {number} [count=10] - scan count
+     * @param {callback} cb - callback (error, result)
+     * @return {undefined}
+     */
+    scan(pattern: string, count = 10, cb) {
         const params = { match: pattern, count };
-        const keys: any[] = [];
+        const keys = [];
 
         const stream = this._client.scanStream(params);
-        stream.on('data', resultKeys => {
+        stream.on('data', (resultKeys) => {
             for (let i = 0; i < resultKeys.length; i++) {
                 keys.push(resultKeys[i]);
             }
@@ -41,91 +46,103 @@ export default class RedisClient {
         });
     }
 
-    /** increment value of a key by 1 and set a ttl
-     * @param key - key holding the value
-     * @param expiry - expiry in seconds
-     * @param cb - callback
+    /**
+     * increment value of a key by 1 and set a ttl
+     * @param {string} key - key holding the value
+     * @param {number} expiry - expiry in seconds
+     * @param {callback} cb - callback
+     * @return {undefined}
      */
-    incrEx(key: string, expiry: number, cb: Callback) {
-        const exp = expiry.toString();
+    incrEx(key: string, expiry: number, cb) {
         return this._client
-            .multi([['incr', key], ['expire', key, exp]])
+            .multi([
+                ['incr', key],
+                ['expire', key, expiry],
+            ])
             .exec(cb);
     }
 
     /**
      * increment value of a key by a given amount
-     * @param key - key holding the value
-     * @param amount - amount to increase by
-     * @param cb - callback
+     * @param {string} key - key holding the value
+     * @param {number} amount - amount to increase by
+     * @param {callback} cb - callback
+     * @return {undefined}
      */
-    incrby(key: string, amount: number, cb: Callback) {
+    incrby(key: string, amount: number, cb) {
         return this._client.incrby(key, amount, cb);
     }
 
-    /** increment value of a key by a given amount and set a ttl
-     * @param key - key holding the value
-     * @param amount - amount to increase by
-     * @param expiry - expiry in seconds
-     * @param cb - callback
+    /**
+     * increment value of a key by a given amount and set a ttl
+     * @param {string} key - key holding the value
+     * @param {number} amount - amount to increase by
+     * @param {number} expiry - expiry in seconds
+     * @param {callback} cb - callback
+     * @return {undefined}
      */
-    incrbyEx(key: string, amount: number, expiry: number, cb: Callback) {
-        const am = amount.toString();
-        const exp = expiry.toString();
+    incrbyEx(key: string, amount: number, expiry: number, cb) {
         return this._client
-            .multi([['incrby', key, am], ['expire', key, exp]])
+            .multi([
+                ['incrby', key, amount],
+                ['expire', key, expiry],
+            ])
             .exec(cb);
     }
 
     /**
      * decrement value of a key by a given amount
-     * @param key - key holding the value
-     * @param amount - amount to increase by
-     * @param cb - callback
+     * @param {string} key - key holding the value
+     * @param {number} amount - amount to increase by
+     * @param {callback} cb - callback
+     * @return {undefined}
      */
-    decrby(key: string, amount: number, cb: Callback) {
+    decrby(key: string, amount: number, cb) {
         return this._client.decrby(key, amount, cb);
     }
 
     /**
-    * execute a batch of commands
-    * @param cmds - list of commands
-    * @param cb - callback
-    * @return
-    */
-    batch(cmds: string[][], cb: Callback) {
-        return this._client.pipeline(cmds).exec(cb);
+     * get value stored at key
+     * @param {string} key - key holding the value
+     * @param {callback} cb - callback
+     * @return {undefined}
+     */
+    get(key: string, cb) {
+        return this._client.get(key, cb);
     }
 
     /**
      * Checks if a key exists
-     * @param key - name of key
-     * @param cb - callback
+     * @param {string} key - name of key
+     * @param {function} cb - callback
      *   If cb response returns 0, key does not exist.
      *   If cb response returns 1, key exists.
+     * @return {undefined}
      */
-    exists(key: string, cb: Callback) {
+    exists(key: string, cb) {
         return this._client.exists(key, cb);
     }
 
     /**
-     * get value stored at key
-     * @param key - key holding the value
-     * @param cb - callback
+     * execute a batch of commands
+     * @param {string[]} cmds - list of commands
+     * @param {callback} cb - callback
+     * @return {undefined}
      */
-    get(key: string, cb: Callback) {
-        return this._client.get(key, cb);
+    batch(cmds: string[], cb) {
+        return this._client.pipeline(cmds).exec(cb);
     }
 
     /**
      * Add a value and its score to a sorted set. If no sorted set exists, this
      * will create a new one for the given key.
-     * @param key - name of key
-     * @param score - score used to order set
-     * @param value - value to store
-     * @param cb - callback
+     * @param {string} key - name of key
+     * @param {integer} score - score used to order set
+     * @param {string} value - value to store
+     * @param {callback} cb - callback
+     * @return {undefined}
      */
-    zadd(key: string, score: number, value: string, cb: Callback) {
+    zadd(key: string, score: number, value: string, cb) {
         return this._client.zadd(key, score, value, cb);
     }
 
@@ -134,10 +151,11 @@ export default class RedisClient {
      * Note: using this on a key that does not exist will return 0.
      * Note: using this on an existing key that isn't a sorted set will
      * return an error WRONGTYPE.
-     * @param key - name of key
-     * @param cb - callback
+     * @param {string} key - name of key
+     * @param {function} cb - callback
+     * @return {undefined}
      */
-    zcard(key: string, cb: Callback) {
+    zcard(key: string, cb) {
         return this._client.zcard(key, cb);
     }
 
@@ -146,73 +164,73 @@ export default class RedisClient {
      * Note: using this on a key that does not exist will return nil.
      * Note: using this on a value that does not exist in a valid sorted set key
      *       will return nil.
-     * @param key - name of key
-     * @param value - value within sorted set
-     * @param cb - callback
+     * @param {string} key - name of key
+     * @param {string} value - value within sorted set
+     * @param {function} cb - callback
+     * @return {undefined}
      */
-     zscore(key: string, value: string, cb: Callback) {
+    zscore(key: string, value: string, cb) {
         return this._client.zscore(key, value, cb);
     }
 
     /**
      * Remove a value from a sorted set
-     * @param key - name of key
-     * @param value - value within sorted set. Can specify
+     * @param {string} key - name of key
+     * @param {string|array} value - value within sorted set. Can specify
      *   multiple values within an array
-     * @param cb - callback
+     * @param {function} cb - callback
      *   The cb response returns number of values removed
+     * @return {undefined}
      */
-    zrem(key: string, value: string | string[], cb: Callback) {
+    zrem(key: string, value: string | any[], cb) {
         return this._client.zrem(key, value, cb);
     }
 
     /**
      * Get specified range of elements in a sorted set
-     * @param key - name of key
-     * @param start - start index (inclusive)
-     * @param end - end index (inclusive) (can use -1)
-     * @param cb - callback
+     * @param {string} key - name of key
+     * @param {integer} start - start index (inclusive)
+     * @param {integer} end - end index (inclusive) (can use -1)
+     * @param {function} cb - callback
+     * @return {undefined}
      */
-    zrange(key: string, start: number, end: number, cb: Callback) {
+    zrange(key: string, start: number, end: number, cb) {
         return this._client.zrange(key, start, end, cb);
     }
 
     /**
      * Get range of elements in a sorted set based off score
-     * @param key - name of key
-     * @param min - min score value (inclusive)
+     * @param {string} key - name of key
+     * @param {integer|string} min - min score value (inclusive)
      *   (can use "-inf")
-     * @param max - max score value (inclusive)
+     * @param {integer|string} max - max score value (inclusive)
      *   (can use "+inf")
-     * @param cb - callback
+     * @param {function} cb - callback
+     * @return {undefined}
      */
-    zrangebyscore(
-        key: string,
-        min: number | string,
-        max: number | string,
-        cb: Callback,
-    ) {
+    zrangebyscore(key: string, min: number | string, max: number | string, cb) {
         return this._client.zrangebyscore(key, min, max, cb);
     }
 
     /**
      * get TTL or expiration in seconds
-     * @param key - name of key
-     * @param cb - callback
+     * @param {string} key - name of key
+     * @param {function} cb - callback
+     * @return {undefined}
      */
-    ttl(key: string, cb: Callback) {
+    ttl(key: string, cb) {
         return this._client.ttl(key, cb);
     }
 
-    clear(cb: Callback) {
+    clear(cb) {
         return this._client.flushdb(cb);
     }
 
-    disconnect() {
-        this._client.disconnect();
+    disconnect(cb) {
+        return this._client.quit(cb);
     }
 
-    listClients(cb: Callback) {
+    listClients(cb) {
         return this._client.client('list', cb);
     }
 }

lib/metrics/StatsClient.ts

@@ -1,19 +1,16 @@
 import async from 'async';
 import RedisClient from './RedisClient';
-import { Logger } from 'werelogs';
-
-export type Callback = (error: Error | null, value?: any) => void;
 
 export default class StatsClient {
-    _redis: RedisClient;
+    _redis?: RedisClient;
     _interval: number;
     _expiry: number;
 
     /**
     * @constructor
-    * @param redisClient - RedisClient instance
-    * @param interval - sampling interval by seconds
-    * @param expiry - sampling duration by seconds
+    * @param {object} redisClient - RedisClient instance
+    * @param {number} interval - sampling interval by seconds
+    * @param {number} expiry - sampling duration by seconds
     */
     constructor(redisClient: RedisClient, interval: number, expiry: number) {
         this._redis = redisClient;
@@ -22,23 +19,25 @@ export default class StatsClient {
         return this;
     }
 
-    /** Utility function to use when callback is undefined */
+    /*
+    * Utility function to use when callback is undefined
+    */
     _noop() {}
 
     /**
     * normalize to the nearest interval
-    * @param d - Date instance
-    * @return timestamp - normalized to the nearest interval
+    * @param {object} d - Date instance
+    * @return {number} timestamp - normalized to the nearest interval
     */
     _normalizeTimestamp(d: Date): number {
         const s = d.getSeconds();
-        return d.setSeconds(s - s % this._interval, 0);
+        return d.setSeconds(s - (s % this._interval), 0);
     }
 
     /**
     * set timestamp to the previous interval
-    * @param d - Date instance
-    * @return timestamp - set to the previous interval
+    * @param {object} d - Date instance
+    * @return {number} timestamp - set to the previous interval
     */
     _setPrevInterval(d: Date): number {
         return d.setSeconds(d.getSeconds() - this._interval);
@@ -46,23 +45,23 @@ export default class StatsClient {
 
     /**
     * build redis key to get total number of occurrences on the server
-    * @param name - key name identifier
-    * @param d - Date instance
-    * @return key - key for redis
+    * @param {string} name - key name identifier
+    * @param {Date} date - Date instance
+    * @return {string} key - key for redis
     */
-    buildKey(name: string, d: Date): string {
-        return `${name}:${this._normalizeTimestamp(d)}`;
+    buildKey(name: string, date: Date): string {
+        return `${name}:${this._normalizeTimestamp(date)}`;
     }
 
     /**
     * reduce the array of values to a single value
     * typical input looks like [[null, '1'], [null, '2'], [null, null]...]
-    * @param arr - Date instance
-    * @return key - key for redis
+    * @param {array} arr - Date instance
+    * @return {string} key - key for redis
     */
-    _getCount(arr: [any, string | null][]): number {
+    _getCount(arr: any[]): string {
         return arr.reduce((prev, a) => {
-            let num = parseInt(a[1] ?? '', 10);
+            let num = parseInt(a[1], 10);
             num = Number.isNaN(num) ? 0 : num;
             return prev + num;
         }, 0);
@@ -70,27 +69,25 @@ export default class StatsClient {
 
     /**
     * report/record a new request received on the server
-    * @param id - service identifier
-    * @param incr - optional param increment
+    * @param {string} id - service identifier
+    * @param {number} incr - optional param increment
+    * @param {function} cb - callback
+    * @return {undefined}
     */
-    reportNewRequest(
-        id: string,
-        incr?: number | ((error: Error | null, value?: any) => void),
-        cb?: (error: Error | null, value?: any) => void,
-    ) {
+    reportNewRequest(id: string, incr: number, cb) {
         if (!this._redis) {
             return undefined;
         }
 
-        let callback: (error: Error | null, value?: any) => void;
-        let amount: number;
+        let callback;
+        let amount;
         if (typeof incr === 'function') {
             // In case where optional `incr` is not passed, but `cb` is passed
             callback = incr;
             amount = 1;
         } else {
-            callback = (cb && typeof cb === 'function') ? cb : this._noop;
-            amount = (typeof incr === 'number') ? incr : 1;
+            callback = cb && typeof cb === 'function' ? cb : this._noop;
+            amount = typeof incr === 'number' ? incr : 1;
         }
 
         const key = this.buildKey(`${id}:requests`, new Date());
@@ -100,31 +97,35 @@ export default class StatsClient {
 
     /**
      * Increment the given key by the given value.
-     * @param key - The Redis key to increment
-     * @param incr - The value to increment by
-     * @param [cb] - callback
+     * @param {String} key - The Redis key to increment
+     * @param {Number} incr - The value to increment by
+     * @param {function} [cb] - callback
+     * @return {undefined}
      */
-    incrementKey(key: string, incr: number, cb: Callback) {
+    incrementKey(key: string, incr: number, cb) {
         const callback = cb || this._noop;
         return this._redis.incrby(key, incr, callback);
     }
 
     /**
      * Decrement the given key by the given value.
-     * @param key - The Redis key to decrement
-     * @param decr - The value to decrement by
-     * @param [cb] - callback
+     * @param {String} key - The Redis key to decrement
+     * @param {Number} decr - The value to decrement by
+     * @param {function} [cb] - callback
+     * @return {undefined}
      */
-    decrementKey(key: string, decr: number, cb: Callback) {
+    decrementKey(key: string, decr: number, cb) {
         const callback = cb || this._noop;
         return this._redis.decrby(key, decr, callback);
     }
 
     /**
-    * report/record a request that ended up being a 500 on the server
-    * @param id - service identifier
-    */
-    report500(id: string, cb?: (error: Error | null, value?: any) => void) {
+     * report/record a request that ended up being a 500 on the server
+     * @param {string} id - service identifier
+     * @param {callback} cb - callback
+     * @return {undefined}
+     */
+    report500(id: string, cb) {
         if (!this._redis) {
             return undefined;
         }
@@ -135,60 +136,68 @@ export default class StatsClient {
 
     /**
     * wrapper on `getStats` that handles a list of keys
-    * @param log - Werelogs request logger
-    * @param ids - service identifiers
-    * @param cb - callback to call with the err/result
+    * @param {object} log - Werelogs request logger
+    * @param {array} ids - service identifiers
+    * @param {callback} cb - callback to call with the err/result
+    * @return {undefined}
     */
-    getAllStats(log: Logger, ids: string[], cb: Callback) {
+    getAllStats(log, ids: any[], cb) {
         if (!this._redis) {
             return cb(null, {});
         }
 
         const statsRes = {
-            'requests': 0,
+            requests: 0,
             '500s': 0,
-            'sampleDuration': this._expiry,
+            sampleDuration: this._expiry,
         };
         let requests = 0;
         let errors = 0;
 
         // for now set concurrency to default of 10
-        return async.eachLimit(ids, 10, (id: string, done) => {
-            this.getStats(log, id, (err, res) => {
-                if (err) {
-                    return done(err);
-                }
-                requests += res.requests;
-                errors += res['500s'];
-                return done();
-            });
-        }, error => {
-            if (error) {
-                log.error('error getting stats', {
-                    error,
-                    method: 'StatsClient.getAllStats',
+        return async.eachLimit(
+            ids,
+            10,
+            (id, done) => {
+                this.getStats(log, id, (err, res) => {
+                    if (err) {
+                        return done(err);
+                    }
+                    requests += res.requests;
+                    errors += res['500s'];
+                    return done();
                 });
+            },
+            (error) => {
+                if (error) {
+                    log.error('error getting stats', {
+                        error,
+                        method: 'StatsClient.getAllStats',
+                    });
+                    return cb(null, statsRes);
+                }
+                statsRes.requests = requests;
+                statsRes['500s'] = errors;
                 return cb(null, statsRes);
             }
-            statsRes.requests = requests;
-            statsRes['500s'] = errors;
-            return cb(null, statsRes);
-        });
+        );
     }
 
     /**
     * get stats for the last x seconds, x being the sampling duration
-    * @param log - Werelogs request logger
-    * @param id - service identifier
+    * @param {object} log - Werelogs request logger
+    * @param {string} id - service identifier
+    * @param {callback} cb - callback to call with the err/result
+    * @return {undefined}
     */
-    getStats(log: Logger, id: string, cb: (error: Error | null, value?: any) => void) {
+    getStats(log, id: string, cb) {
         if (!this._redis) {
             return cb(null, {});
         }
         const d = new Date();
         const totalKeys = Math.floor(this._expiry / this._interval);
-        const reqsKeys: ['get', string][] = [];
-        const req500sKeys: ['get', string][] = [];
+        const reqsKeys = [];
+        const req500sKeys = [];
         for (let i = 0; i < totalKeys; i++) {
             reqsKeys.push(['get', this.buildKey(`${id}:requests`, d)]);
             req500sKeys.push(['get', this.buildKey(`${id}:500s`, d)]);
@@ -206,9 +215,9 @@ export default class StatsClient {
             * index 1 contains the result
             */
             const statsRes = {
-                'requests': 0,
+                requests: 0,
                 '500s': 0,
-                'sampleDuration': this._expiry,
+                sampleDuration: this._expiry,
             };
             if (err) {
                 log.error('error getting stats', {
@@ -216,14 +225,14 @@ export default class StatsClient {
                     method: 'StatsClient.getStats',
                 });
                 /**
-                * Redis for stats is not a critial component, ignoring
-                * any error here as returning an InternalError
-                * would be confused with the health of the service
-                */
+                 * Redis for stats is not a critial component, ignoring
+                 * any error here as returning an InternalError
+                 * would be confused with the health of the service
+                 */
                 return cb(null, statsRes);
             }
-            statsRes.requests = this._getCount((results as any)[0]);
-            statsRes['500s'] = this._getCount((results as any)[1]);
+            statsRes.requests = this._getCount(results[0]);
+            statsRes['500s'] = this._getCount(results[1]);
             return cb(null, statsRes);
         });
     }

lib/metrics/StatsModel.ts

@@ -1,8 +1,5 @@
-import StatsClient from './StatsClient';
-import { Logger } from 'werelogs';
 import async from 'async';
-
-export type Callback = (error: Error | null, value?: any) => void;
+import StatsClient from './StatsClient';
 
 /**
  * @class StatsModel
@@ -12,46 +9,45 @@ export type Callback = (error: Error | null, value?: any) => void;
  */
 export default class StatsModel extends StatsClient {
     /**
-    * Utility method to convert 2d array rows to columns, and vice versa
-    * See also: https://docs.ruby-lang.org/en/2.0.0/Array.html#method-i-zip
-    * @param arrays - 2d array of integers
-    * @return converted array
-    */
+     * Utility method to convert 2d array rows to columns, and vice versa
+     * See also: https://docs.ruby-lang.org/en/2.0.0/Array.html#method-i-zip
+     * @param {array} arrays - 2d array of integers
+     * @return {array} converted array
+     */
     _zip(arrays: number[][]) {
-        if (arrays.length > 0 && arrays.every(a => Array.isArray(a))) {
-            return arrays[0].map((_, i) => arrays.map(a => a[i]));
+        if (arrays.length > 0 && arrays.every((a) => Array.isArray(a))) {
+            return arrays[0].map((_, i) => arrays.map((a) => a[i]));
         }
         return [];
     }
 
     /**
-    * normalize to the nearest interval
-    * @param d - Date instance
-    * @return timestamp - normalized to the nearest interval
-    */
+     * normalize to the nearest interval
+     * @param {object} d - Date instance
+     * @return {number} timestamp - normalized to the nearest interval
+     */
     _normalizeTimestamp(d: Date) {
         const m = d.getMinutes();
-        return d.setMinutes(m - m % (Math.floor(this._interval / 60)), 0, 0);
+        return d.setMinutes(m - (m % Math.floor(this._interval / 60)), 0, 0);
     }
 
     /**
-    * override the method to get the count as an array of integers separated
-    * by each interval
-    * typical input looks like [[null, '1'], [null, '2'], [null, null]...]
-    * @param arr - each index contains the result of each batch command
-    *   where index 0 signifies the error and index 1 contains the result
-    * @return array of integers, ordered from most recent interval to
-    *   oldest interval with length of (expiry / interval)
-    */
-    // @ts-expect-errors
-    _getCount(arr: [any, string | null][]): number[] {
+     * override the method to get the count as an array of integers separated
+     * by each interval
+     * typical input looks like [[null, '1'], [null, '2'], [null, null]...]
+     * @param {array} arr - each index contains the result of each batch command
+     *   where index 0 signifies the error and index 1 contains the result
+     * @return {array} array of integers, ordered from most recent interval to
+     *   oldest interval with length of (expiry / interval)
+     */
+    _getCount(arr) {
         const size = Math.floor(this._expiry / this._interval);
         const array = arr.reduce((store, i) => {
-            let num = parseInt(i[1] ?? '', 10);
+            let num = parseInt(i[1], 10);
             num = Number.isNaN(num) ? 0 : num;
             store.push(num);
             return store;
-        }, [] as number[]);
+        }, []);
 
         if (array.length < size) {
             array.push(...Array(size - array.length).fill(0));
@@ -60,25 +56,26 @@ export default class StatsModel extends StatsClient {
     }
 
     /**
-    * wrapper on `getStats` that handles a list of keys
-    * override the method to reduce the returned 2d array from `_getCount`
-    * @param log - Werelogs request logger
-    * @param ids - service identifiers
-    * @param cb - callback to call with the err/result
-    */
-    getAllStats(log: Logger, ids: string[], cb: Callback) {
+     * wrapper on `getStats` that handles a list of keys
+     * override the method to reduce the returned 2d array from `_getCount`
+     * @param {object} log - Werelogs request logger
+     * @param {array} ids - service identifiers
+     * @param {callback} cb - callback to call with the err/result
+     * @return {undefined}
+     */
+    getAllStats(log, ids: string[], cb) {
         if (!this._redis) {
             return cb(null, {});
         }
 
         const size = Math.floor(this._expiry / this._interval);
         const statsRes = {
-            'requests': Array(size).fill(0),
+            requests: Array(size).fill(0),
             '500s': Array(size).fill(0),
-            'sampleDuration': this._expiry,
+            sampleDuration: this._expiry,
         };
-        const requests: any[] = [];
-        const errors: any[] = [];
+        const requests = [];
+        const errors = [];
 
         if (ids.length === 0) {
             return cb(null, statsRes);
@@ -114,13 +111,14 @@ export default class StatsModel extends StatsClient {
 
     /**
      * Handles getting a list of global keys.
-     * @param ids - Service identifiers
-     * @param log - Werelogs request logger
-     * @param cb - Callback
+     * @param {array} ids - Service identifiers
+     * @param {object} log - Werelogs request logger
+     * @param {function} cb - Callback
+     * @return {undefined}
      */
-    getAllGlobalStats(ids: string[], log: Logger, cb: Callback) {
-        const reqsKeys = ids.map(key => (['get', key]));
-        return this._redis.batch(reqsKeys, (err, res) => {
+    getAllGlobalStats(ids: string[], log, cb) {
+        const reqsKeys = ids.map((key) => ['get', key]);
+        return this._redis!.batch(reqsKeys, (err, res) => {
             const statsRes = { requests: 0 };
             if (err) {
                 log.error('error getting metrics', {
@@ -146,8 +144,8 @@ export default class StatsModel extends StatsClient {
 
     /**
      * normalize date timestamp to the nearest hour
-     * @param d - Date instance
-     * @return timestamp - normalized to the nearest hour
+     * @param {Date} d - Date instance
+     * @return {number} timestamp - normalized to the nearest hour
      */
     normalizeTimestampByHour(d: Date) {
         return d.setMinutes(0, 0, 0);
@@ -155,8 +153,8 @@ export default class StatsModel extends StatsClient {
 
     /**
      * get previous hour to date given
-     * @param d - Date instance
-     * @return timestamp - one hour prior to date passed
+     * @param {Date} d - Date instance
+     * @return {number} timestamp - one hour prior to date passed
      */
     _getDatePreviousHour(d: Date) {
         return d.setHours(d.getHours() - 1);
@@ -164,8 +162,8 @@ export default class StatsModel extends StatsClient {
 
     /**
      * get list of sorted set key timestamps
-     * @param epoch - epoch time
-     * @return array of sorted set key timestamps
+     * @param {number} epoch - epoch time
+     * @return {array} array of sorted set key timestamps
      */
     getSortedSetHours(epoch: number) {
         const timestamps: number[] = [];
@@ -179,8 +177,8 @@ export default class StatsModel extends StatsClient {
 
     /**
      * get the normalized hour timestamp for given epoch time
-     * @param epoch - epoch time
-     * @return normalized hour timestamp for given time
+     * @param {number} epoch - epoch time
+     * @return {string} normalized hour timestamp for given time
      */
     getSortedSetCurrentHour(epoch: number) {
         return this.normalizeTimestampByHour(new Date(epoch));
@@ -188,18 +186,14 @@ export default class StatsModel extends StatsClient {
 
     /**
      * helper method to add element to a sorted set, applying TTL if new set
-     * @param key - name of key
-     * @param score - score used to order set
-     * @param value - value to store
-     * @param cb - callback
+     * @param {string} key - name of key
+     * @param {integer} score - score used to order set
+     * @param {string} value - value to store
+     * @param {callback} cb - callback
+     * @return {undefined}
      */
-    addToSortedSet(
-        key: string,
-        score: number,
-        value: string,
-        cb: (error: Error | null, value?: any) => void,
-    ) {
-        this._redis.exists(key, (err, resCode) => {
+    addToSortedSet(key: string, score: number, value: string, cb) {
+        this._redis!.exists(key, (err, resCode) => {
             if (err) {
                 return cb(err);
             }
@@ -208,17 +202,16 @@ export default class StatsModel extends StatsClient {
                 const msInADay = 24 * 60 * 60 * 1000;
                 const nearestHour = this.normalizeTimestampByHour(new Date());
                 // in seconds
-                const ttl = Math.ceil(
-                    (msInADay - (Date.now() - nearestHour)) / 1000);
+                const ttl = Math.ceil((msInADay - (Date.now() - nearestHour)) / 1000);
                 const cmds = [
-                    ['zadd', key, score.toString(), value],
-                    ['expire', key, ttl.toString()],
+                    ['zadd', key, score, value],
+                    ['expire', key, ttl],
                 ];
                 return this._redis.batch(cmds, (err, res) => {
                     if (err) {
                         return cb(err);
                     }
-                    const cmdErr = res.find((r: any) => r[0] !== null);
+                    const cmdErr = res.find((r) => r[0] !== null);
                     if (cmdErr) {
                         return cb(cmdErr);
                     }
@@ -226,7 +219,7 @@ export default class StatsModel extends StatsClient {
                     return cb(null, successResponse);
                 });
             }
-            return this._redis.zadd(key, score, value, cb);
+            return this._redis!.zadd(key, score, value, cb);
         });
     }
 }

lib/metrics/ZenkoMetrics.ts

@@ -1,35 +1,38 @@
 import promClient from 'prom-client';
 
+const collectDefaultMetricsIntervalMs =
+    process.env.COLLECT_DEFAULT_METRICS_INTERVAL_MS !== undefined
+        ? Number.parseInt(process.env.COLLECT_DEFAULT_METRICS_INTERVAL_MS, 10)
+        : 10000;
+
+promClient.collectDefaultMetrics({ timeout: collectDefaultMetricsIntervalMs });
+
 export default class ZenkoMetrics {
-    static createCounter(params: promClient.CounterConfiguration<string>) {
+    static createCounter(params) {
         return new promClient.Counter(params);
     }
 
-    static createGauge(params: promClient.GaugeConfiguration<string>) {
+    static createGauge(params) {
         return new promClient.Gauge(params);
     }
 
-    static createHistogram(params: promClient.HistogramConfiguration<string>) {
+    static createHistogram(params) {
         return new promClient.Histogram(params);
     }
 
-    static createSummary(params: promClient.SummaryConfiguration<string>) {
+    static createSummary(params) {
         return new promClient.Summary(params);
     }
 
-    static getMetric(name: string) {
+    static getMetric(name) {
         return promClient.register.getSingleMetric(name);
     }
 
-    static async asPrometheus() {
+    static asPrometheus() {
         return promClient.register.metrics();
     }
 
     static asPrometheusContentType() {
         return promClient.register.contentType;
     }
-
-    static collectDefaultMetrics() {
-        return promClient.collectDefaultMetrics();
-    }
 }

lib/models/ARN.ts

@@ -1,4 +1,4 @@
-import errors from '../errors'
+import errors from '../errors';
 
 const validServices = {
     aws: ['s3', 'iam', 'sts', 'ring'],
@@ -9,7 +9,7 @@ export default class ARN {
     _partition: string;
     _service: string;
     _region: string | null;
-    _accountId?: string | null;
+    _accountId: string | null;
     _resource: string;
 
     /**
@@ -17,19 +17,13 @@ export default class ARN {
      * Create an ARN object from its individual components
      *
      * @constructor
-     * @param partition - ARN partition (e.g. 'aws')
-     * @param service - service name in partition (e.g. 's3')
-     * @param [region] - AWS region
-     * @param [accountId] - AWS 12-digit account ID
-     * @param resource - AWS resource path (e.g. 'foo/bar')
+     * @param {string} partition - ARN partition (e.g. 'aws')
+     * @param {string} service - service name in partition (e.g. 's3')
+     * @param {string} [region] - AWS region
+     * @param {string} [accountId] - AWS 12-digit account ID
+     * @param {string} resource - AWS resource path (e.g. 'foo/bar')
      */
-    constructor(
-        partition: string,
-        service: string,
-        region: string | undefined | null,
-        accountId: string | undefined | null,
-        resource: string,
-    ) {
+    constructor(partition: string, service: string, region: string, accountId: string, resource: string) {
         this._partition = partition;
         this._service = service;
         this._region = region || null;
@@ -69,8 +63,8 @@ export default class ARN {
                 `bad ARN: bad account ID "${accountId}": ` +
                     'must be a 12-digit number or "*"') };
         }
-        const fullResource = (resource !== undefined ?
-            `${resourceType}:${resource}` : resourceType);
+        const fullResource = resource !== undefined ?
+            `${resourceType}:${resource}` : resourceType;
         return new ARN(partition, service, region, accountId, fullResource);
     }
 
@@ -91,21 +85,21 @@ export default class ARN {
     }
 
     isIAMAccount() {
-        return this.getService() === 'iam'
-            && this.getAccountId() !== null
-            && this.getAccountId() !== '*'
-            && this.getResource() === 'root';
+        return this.getService() === 'iam' &&
+            this.getAccountId() !== null &&
+            this.getAccountId() !== '*' &&
+            this.getResource() === 'root';
     }
     isIAMUser() {
-        return this.getService() === 'iam'
-            && this.getAccountId() !== null
-            && this.getAccountId() !== '*'
-            && this.getResource().startsWith('user/');
+        return this.getService() === 'iam' &&
+            this.getAccountId() !== null &&
+            this.getAccountId() !== '*' &&
+            this.getResource().startsWith('user/');
     }
     isIAMRole() {
-        return this.getService() === 'iam'
-            && this.getAccountId() !== null
-            && this.getResource().startsWith('role');
+        return this.getService() === 'iam' &&
+            this.getAccountId() !== null &&
+            this.getResource().startsWith('role');
     }
 
     toString() {

lib/models/BackendInfo.ts

@@ -1,36 +1,28 @@
-import { RequestLogger } from 'werelogs';
-
 import { legacyLocations } from '../constants';
 import escapeForXml from '../s3middleware/escapeForXml';
 
-type CloudServerConfig = any;
-
 export default class BackendInfo {
-    _config: CloudServerConfig;
-    _requestEndpoint: string;
-    _objectLocationConstraint?: string;
-    _bucketLocationConstraint?: string;
-    _legacyLocationConstraint?: string;
+    _config;
+    _objectLocationConstraint;
+    _bucketLocationConstraint;
+    _requestEndpoint;
+    _legacyLocationConstraint;
 
     /**
     * Represents the info necessary to evaluate which data backend to use
     * on a data put call.
     * @constructor
-    * @param config - CloudServer config containing list of locations
-    * @param objectLocationConstraint - location constraint
+    * @param {object} config - CloudServer config containing list of locations
+    * @param {string | undefined} objectLocationConstraint - location constraint
     * for object based on user meta header
-    * @param bucketLocationConstraint - location
+    * @param {string | undefined } bucketLocationConstraint - location
     * constraint for bucket based on bucket metadata
-    * @param requestEndpoint - endpoint to which request was made
-    * @param legacyLocationConstraint - legacy location constraint
+    * @param {string} requestEndpoint - endpoint to which request was made
+    * @param {string | undefined } legacyLocationConstraint - legacy location
+    * constraint
     */
-    constructor(
-        config: CloudServerConfig,
-        objectLocationConstraint: string | undefined,
-        bucketLocationConstraint: string | undefined,
-        requestEndpoint: string,
-        legacyLocationConstraint: string | undefined,
-    ) {
+    constructor(config, objectLocationConstraint, bucketLocationConstraint,
+        requestEndpoint, legacyLocationConstraint) {
         this._config = config;
         this._objectLocationConstraint = objectLocationConstraint;
         this._bucketLocationConstraint = bucketLocationConstraint;
@@ -41,18 +33,15 @@ export default class BackendInfo {
 
     /**
      * validate proposed location constraint against config
-     * @param config - CloudServer config
-     * @param locationConstraint - value of user
+     * @param {object} config - CloudServer config
+     * @param {string | undefined} locationConstraint - value of user
      * metadata location constraint header or bucket location constraint
-     * @param log - werelogs logger
-     * @return - true if valid, false if not
+     * @param {object} log - werelogs logger
+     * @return {boolean} - true if valid, false if not
      */
-    static isValidLocationConstraint(
-        config: CloudServerConfig,
-        locationConstraint: string | undefined,
-        log: RequestLogger,
-    ) {
-        if (!locationConstraint || !(locationConstraint in config.locationConstraints)) {
+    static isValidLocationConstraint(config, locationConstraint, log) {
+        if (Object.keys(config.locationConstraints).
+            indexOf(locationConstraint) < 0) {
             log.trace('proposed locationConstraint is invalid',
                 { locationConstraint });
             return false;
@@ -62,17 +51,14 @@ export default class BackendInfo {
 
     /**
      * validate that request endpoint is listed in the restEndpoint config
-     * @param config - CloudServer config
-     * @param requestEndpoint - request endpoint
-     * @param log - werelogs logger
-     * @return true if present, false if not
+     * @param {object} config - CloudServer config
+     * @param {string} requestEndpoint - request endpoint
+     * @param {object} log - werelogs logger
+     * @return {boolean} - true if present, false if not
      */
-    static isRequestEndpointPresent(
-        config: CloudServerConfig,
-        requestEndpoint: string,
-        log: RequestLogger,
-    ) {
-        if (!(requestEndpoint in config.restEndpoints)) {
+    static isRequestEndpointPresent(config, requestEndpoint, log) {
+        if (Object.keys(config.restEndpoints).
+            indexOf(requestEndpoint) < 0) {
             log.trace('requestEndpoint does not match config restEndpoints',
                 { requestEndpoint });
             return false;
@@ -83,18 +69,14 @@ export default class BackendInfo {
     /**
      * validate that locationConstraint for request Endpoint matches
      * one config locationConstraint
-     * @param config - CloudServer config
-     * @param requestEndpoint - request endpoint
-     * @param log - werelogs logger
-     * @return - true if matches, false if not
+     * @param {object} config - CloudServer config
+     * @param {string} requestEndpoint - request endpoint
+     * @param {object} log - werelogs logger
+     * @return {boolean} - true if matches, false if not
      */
-    static isRequestEndpointValueValid(
-        config: CloudServerConfig,
-        requestEndpoint: string,
-        log: RequestLogger,
-    ) {
-        const restEndpoint = config.restEndpoints[requestEndpoint];
-        if (!(restEndpoint in config.locationConstraints)) {
+    static isRequestEndpointValueValid(config, requestEndpoint, log) {
+        if (Object.keys(config.locationConstraints).
+            indexOf(config.restEndpoints[requestEndpoint]) < 0) {
             log.trace('the default locationConstraint for request' +
                 'Endpoint does not match any config locationConstraint',
             { requestEndpoint });
@@ -105,11 +87,11 @@ export default class BackendInfo {
 
     /**
      * validate that s3 server is running with a file or memory backend
-     * @param config - CloudServer config
-     * @param log - werelogs logger
-     * @return - true if running with file/mem backend, false if not
+     * @param {object} config - CloudServer config
+     * @param {object} log - werelogs logger
+     * @return {boolean} - true if running with file/mem backend, false if not
      */
-    static isMemOrFileBackend(config: CloudServerConfig, log: RequestLogger) {
+    static isMemOrFileBackend(config, log) {
         if (config.backends.data === 'mem' || config.backends.data === 'file') {
             log.trace('use data backend for the location', {
                 dataBackend: config.backends.data,
@@ -127,16 +109,12 @@ export default class BackendInfo {
      * data backend for the location.
      * - if locationConstraint for request Endpoint does not match
      * any config locationConstraint, we will return an error
-     * @param config - CloudServer config
-     * @param requestEndpoint - request endpoint
-     * @param log - werelogs logger
-     * @return - true if valid, false if not
+     * @param {object} config - CloudServer config
+     * @param {string} requestEndpoint - request endpoint
+     * @param {object} log - werelogs logger
+     * @return {boolean} - true if valid, false if not
      */
-    static isValidRequestEndpointOrBackend(
-        config: CloudServerConfig,
-        requestEndpoint: string,
-        log: RequestLogger,
-    ) {
+    static isValidRequestEndpointOrBackend(config, requestEndpoint, log) {
         if (!BackendInfo.isRequestEndpointPresent(config, requestEndpoint,
             log)) {
             return BackendInfo.isMemOrFileBackend(config, log);
@@ -147,22 +125,17 @@ export default class BackendInfo {
 
     /**
      * validate controlling BackendInfo Parameter
-     * @param config - CloudServer config
-     * @param objectLocationConstraint - value of user
+     * @param {object} config - CloudServer config
+     * @param {string | undefined} objectLocationConstraint - value of user
      * metadata location constraint header
-     * @param bucketLocationConstraint - location
+     * @param {string | null} bucketLocationConstraint - location
      * constraint from bucket metadata
-     * @param requestEndpoint - endpoint of request
-     * @param log - werelogs logger
-     * @return - location constraint validity
+     * @param {string} requestEndpoint - endpoint of request
+     * @param {object} log - werelogs logger
+     * @return {object} - location constraint validity
      */
-    static controllingBackendParam(
-        config: CloudServerConfig,
-        objectLocationConstraint: string | undefined,
-        bucketLocationConstraint: string | null,
-        requestEndpoint: string,
-        log: RequestLogger,
-    ) {
+    static controllingBackendParam(config, objectLocationConstraint,
+        bucketLocationConstraint, requestEndpoint, log) {
         if (objectLocationConstraint) {
             if (BackendInfo.isValidLocationConstraint(config,
                 objectLocationConstraint, log)) {
@@ -208,16 +181,16 @@ export default class BackendInfo {
 
     /**
     * Return legacyLocationConstraint
-    * @param config CloudServer config
-    * @return legacyLocationConstraint;
+    * @param {object} config CloudServer config
+    * @return {string | undefined} legacyLocationConstraint;
     */
-    static getLegacyLocationConstraint(config: CloudServerConfig) {
+    static getLegacyLocationConstraint(config) {
         return legacyLocations.find(ll => config.locationConstraints[ll]);
     }
 
     /**
     * Return objectLocationConstraint
-    * @return objectLocationConstraint;
+    * @return {string | undefined} objectLocationConstraint;
     */
     getObjectLocationConstraint() {
         return this._objectLocationConstraint;
@@ -225,7 +198,7 @@ export default class BackendInfo {
 
     /**
     * Return bucketLocationConstraint
-    * @return bucketLocationConstraint;
+    * @return {string | undefined} bucketLocationConstraint;
     */
     getBucketLocationConstraint() {
         return this._bucketLocationConstraint;
@@ -233,7 +206,7 @@ export default class BackendInfo {
 
     /**
     * Return requestEndpoint
-    * @return requestEndpoint;
+    * @return {string} requestEndpoint;
     */
     getRequestEndpoint() {
         return this._requestEndpoint;
@@ -248,9 +221,9 @@ export default class BackendInfo {
     * (4) default locationConstraint for requestEndpoint  if requestEndpoint
     *     is listed in restEndpoints in config.json
     * (5) default data backend
-    * @return locationConstraint;
+    * @return {string} locationConstraint;
     */
-    getControllingLocationConstraint(): string {
+    getControllingLocationConstraint() {
         const objectLC = this.getObjectLocationConstraint();
         const bucketLC = this.getBucketLocationConstraint();
         const reqEndpoint = this.getRequestEndpoint();

lib/models/BucketAzureInfo.ts

@@ -1,86 +1,42 @@
-export type DeleteRetentionPolicy = {
-    enabled: boolean;
-    days: number;
-};
-
 /**
  * Helper class to ease access to the Azure specific information for
  * storage accounts mapped to buckets.
  */
 export default class BucketAzureInfo {
-    _data: {
-        sku: string;
-        accessTier: string;
-        kind: string;
-        systemKeys: string[];
-        tenantKeys: string[];
-        subscriptionId: string;
-        resourceGroup: string;
-        deleteRetentionPolicy: DeleteRetentionPolicy;
-        managementPolicies: any[];
-        httpsOnly: boolean;
-        tags: any;
-        networkACL: any[];
-        cname: string;
-        azureFilesAADIntegration: boolean;
-        hnsEnabled: boolean;
-        logging: any;
-        hourMetrics: any;
-        minuteMetrics: any;
-        serviceVersion: string;
-    }
+    _data
+    
     /**
      * @constructor
-     * @param obj - Raw structure for the Azure info on storage account
-     * @param obj.sku - SKU name of this storage account
-     * @param obj.accessTier - Access Tier name of this storage account
-     * @param obj.kind - Kind name of this storage account
-     * @param obj.systemKeys - pair of shared keys for the system
-     * @param obj.tenantKeys - pair of shared keys for the tenant
-     * @param obj.subscriptionId - subscription ID the storage account
+     * @param {object} obj - Raw structure for the Azure info on storage account
+     * @param {string} obj.sku - SKU name of this storage account
+     * @param {string} obj.accessTier - Access Tier name of this storage account
+     * @param {string} obj.kind - Kind name of this storage account
+     * @param {string[]} obj.systemKeys - pair of shared keys for the system
+     * @param {string[]} obj.tenantKeys - pair of shared keys for the tenant
+     * @param {string} obj.subscriptionId - subscription ID the storage account
      *   belongs to
-     * @param obj.resourceGroup - Resource group name the storage
+     * @param {string} obj.resourceGroup - Resource group name the storage
      *   account belongs to
-     * @param obj.deleteRetentionPolicy - Delete retention policy
-     * @param obj.deleteRetentionPolicy.enabled -
-     * @param obj.deleteRetentionPolicy.days -
-     * @param obj.managementPolicies - Management policies for this
+     * @param {object} obj.deleteRetentionPolicy - Delete retention policy
+     * @param {boolean} obj.deleteRetentionPolicy.enabled -
+     * @param {number} obj.deleteRetentionPolicy.days -
+     * @param {object[]} obj.managementPolicies - Management policies for this
      *   storage account
-     * @param obj.httpsOnly - Server the content of this storage
+     * @param {boolean} obj.httpsOnly - Server the content of this storage
      *   account through HTTPS only
-     * @param obj.tags - Set of tags applied on this storage account
-     * @param obj.networkACL - Network ACL of this storage account
-     * @param obj.cname - CNAME of this storage account
-     * @param obj.azureFilesAADIntegration - whether or not Azure
+     * @param {object} obj.tags - Set of tags applied on this storage account
+     * @param {object[]} obj.networkACL - Network ACL of this storage account
+     * @param {string} obj.cname - CNAME of this storage account
+     * @param {boolean} obj.azureFilesAADIntegration - whether or not Azure
      *   Files AAD Integration is enabled for this storage account
-     * @param obj.hnsEnabled - whether or not a hierarchical namespace
+     * @param {boolean} obj.hnsEnabled - whether or not a hierarchical namespace
      *   is enabled for this storage account
-     * @param obj.logging - service properties: logging
-     * @param obj.hourMetrics - service properties: hourMetrics
-     * @param obj.minuteMetrics - service properties: minuteMetrics
-     * @param obj.serviceVersion - service properties: serviceVersion
+     * @param {object} obj.logging - service properties: logging
+     * @param {object} obj.hourMetrics - service properties: hourMetrics
+     * @param {object} obj.minuteMetrics - service properties: minuteMetrics
+     * @param {string} obj.serviceVersion - service properties: serviceVersion
      */
-    constructor(obj: {
-        sku: string;
-        accessTier: string;
-        kind: string;
-        systemKeys: string[];
-        tenantKeys: string[];
-        subscriptionId: string;
-        resourceGroup: string;
-        deleteRetentionPolicy: DeleteRetentionPolicy;
-        managementPolicies: any[];
-        httpsOnly: boolean;
-        tags: any;
-        networkACL: any[];
-        cname: string;
-        azureFilesAADIntegration: boolean;
-        hnsEnabled: boolean;
-        logging: any;
-        hourMetrics: any;
-        minuteMetrics: any;
-        serviceVersion: string;
-    }) {
+    constructor(obj) {
         this._data = {
             sku: obj.sku,
             accessTier: obj.accessTier,
@@ -108,7 +64,7 @@ export default class BucketAzureInfo {
         return this._data.sku;
     }
 
-    setSku(sku: string) {
+    setSku(sku) {
         this._data.sku = sku;
         return this;
     }
@@ -117,7 +73,7 @@ export default class BucketAzureInfo {
         return this._data.accessTier;
     }
 
-    setAccessTier(accessTier: string) {
+    setAccessTier(accessTier) {
         this._data.accessTier = accessTier;
         return this;
     }
@@ -126,7 +82,7 @@ export default class BucketAzureInfo {
         return this._data.kind;
     }
 
-    setKind(kind: string) {
+    setKind(kind) {
         this._data.kind = kind;
         return this;
     }
@@ -135,7 +91,7 @@ export default class BucketAzureInfo {
         return this._data.systemKeys;
     }
 
-    setSystemKeys(systemKeys: string[]) {
+    setSystemKeys(systemKeys) {
         this._data.systemKeys = systemKeys;
         return this;
     }
@@ -144,7 +100,7 @@ export default class BucketAzureInfo {
         return this._data.tenantKeys;
     }
 
-    setTenantKeys(tenantKeys: string[]) {
+    setTenantKeys(tenantKeys) {
         this._data.tenantKeys = tenantKeys;
         return this;
     }
@@ -153,7 +109,7 @@ export default class BucketAzureInfo {
         return this._data.subscriptionId;
     }
 
-    setSubscriptionId(subscriptionId: string) {
+    setSubscriptionId(subscriptionId) {
         this._data.subscriptionId = subscriptionId;
         return this;
     }
@@ -162,7 +118,7 @@ export default class BucketAzureInfo {
         return this._data.resourceGroup;
     }
 
-    setResourceGroup(resourceGroup: string) {
+    setResourceGroup(resourceGroup) {
         this._data.resourceGroup = resourceGroup;
         return this;
     }
@@ -171,7 +127,7 @@ export default class BucketAzureInfo {
         return this._data.deleteRetentionPolicy;
     }
 
-    setDeleteRetentionPolicy(deleteRetentionPolicy: DeleteRetentionPolicy) {
+    setDeleteRetentionPolicy(deleteRetentionPolicy) {
         this._data.deleteRetentionPolicy = deleteRetentionPolicy;
         return this;
     }
@@ -180,7 +136,7 @@ export default class BucketAzureInfo {
         return this._data.managementPolicies;
     }
 
-    setManagementPolicies(managementPolicies: any[]) {
+    setManagementPolicies(managementPolicies) {
         this._data.managementPolicies = managementPolicies;
         return this;
     }
@@ -189,7 +145,7 @@ export default class BucketAzureInfo {
         return this._data.httpsOnly;
     }
 
-    setHttpsOnly(httpsOnly: boolean) {
+    setHttpsOnly(httpsOnly) {
         this._data.httpsOnly = httpsOnly;
         return this;
     }
@@ -198,7 +154,7 @@ export default class BucketAzureInfo {
         return this._data.tags;
     }
 
-    setTags(tags: any) {
+    setTags(tags) {
         this._data.tags = tags;
         return this;
     }
@@ -207,7 +163,7 @@ export default class BucketAzureInfo {
         return this._data.networkACL;
     }
 
-    setNetworkACL(networkACL: any[]) {
+    setNetworkACL(networkACL) {
         this._data.networkACL = networkACL;
         return this;
     }
@@ -216,7 +172,7 @@ export default class BucketAzureInfo {
         return this._data.cname;
     }
 
-    setCname(cname: string) {
+    setCname(cname) {
         this._data.cname = cname;
         return this;
     }
@@ -225,7 +181,7 @@ export default class BucketAzureInfo {
         return this._data.azureFilesAADIntegration;
     }
 
-    setAzureFilesAADIntegration(azureFilesAADIntegration: boolean) {
+    setAzureFilesAADIntegration(azureFilesAADIntegration) {
         this._data.azureFilesAADIntegration = azureFilesAADIntegration;
         return this;
     }
@@ -234,7 +190,7 @@ export default class BucketAzureInfo {
         return this._data.hnsEnabled;
     }
 
-    setHnsEnabled(hnsEnabled: boolean) {
+    setHnsEnabled(hnsEnabled) {
         this._data.hnsEnabled = hnsEnabled;
         return this;
     }
@@ -243,7 +199,7 @@ export default class BucketAzureInfo {
         return this._data.logging;
     }
 
-    setLogging(logging: any) {
+    setLogging(logging) {
         this._data.logging = logging;
         return this;
     }
@@ -252,7 +208,7 @@ export default class BucketAzureInfo {
         return this._data.hourMetrics;
     }
 
-    setHourMetrics(hourMetrics: any) {
+    setHourMetrics(hourMetrics) {
         this._data.hourMetrics = hourMetrics;
         return this;
     }
@@ -261,7 +217,7 @@ export default class BucketAzureInfo {
         return this._data.minuteMetrics;
     }
 
-    setMinuteMetrics(minuteMetrics: any) {
+    setMinuteMetrics(minuteMetrics) {
         this._data.minuteMetrics = minuteMetrics;
         return this;
     }
@@ -270,7 +226,7 @@ export default class BucketAzureInfo {
         return this._data.serviceVersion;
     }
 
-    setServiceVersion(serviceVersion: any) {
+    setServiceVersion(serviceVersion) {
         this._data.serviceVersion = serviceVersion;
         return this;
     }

lib/models/BucketPolicy.ts

@@ -1,5 +1,6 @@
 import assert from 'assert';
-import errors, { ArsenalError } from '../errors';
+
+import errors from '../errors';
 import { validateResourcePolicy } from '../policy/policyValidator';
 
 /**
@@ -49,21 +50,22 @@ const objectActions = [
 ];
 
 export default class BucketPolicy {
-    _json: string;
-    _policy: any;
+    _json
+    _policy
+    
     /**
      * Create a Bucket Policy instance
-     * @param json - the json policy
-     * @return - BucketPolicy instance
+     * @param {string} json - the json policy
+     * @return {object} - BucketPolicy instance
      */
-    constructor(json: string) {
+    constructor(json) {
         this._json = json;
         this._policy = {};
     }
 
     /**
      * Get the bucket policy
-     * @return - the bucket policy or error
+     * @return {object} - the bucket policy or error
      */
     getBucketPolicy() {
         const policy = this._getPolicy();
@@ -72,12 +74,15 @@ export default class BucketPolicy {
 
     /**
      * Get the bucket policy array
-     * @return - contains error if policy validation fails
+     * @return {object} - contains error if policy validation fails
      */
-    _getPolicy(): { error: ArsenalError } | any {
+    _getPolicy() {
         if (!this._json || this._json === '') {
-            return { error: errors.MalformedPolicy.customizeDescription(
-                'request json is empty or undefined') };
+            return {
+                error: errors.MalformedPolicy.customizeDescription(
+                    'request json is empty or undefined'
+                ),
+            };
         }
         const validSchema = validateResourcePolicy(this._json);
         if (validSchema.error) {
@@ -102,37 +107,45 @@ export default class BucketPolicy {
 
     /**
      * Validate action and resource are compatible
-     * @return - contains error or empty obj
+     * @return {error} - contains error or empty obj
      */
-    _validateActionResource(): { error?: ArsenalError } {
-        const invalid = this._policy.Statement.every((s: any) => {
-            const actions: string[] = typeof s.Action === 'string' ?
-                [s.Action] : s.Action;
-            const resources: string[] = typeof s.Resource === 'string' ?
-                [s.Resource] : s.Resource;
-            const objectAction = actions.some(a =>
-                a.includes('Object') || objectActions.includes(a));
+    _validateActionResource() {
+        const invalid = this._policy.Statement.every((s) => {
+            const actions =
+                typeof s.Action === 'string' ? [s.Action] : s.Action;
+            const resources =
+                typeof s.Resource === 'string' ? [s.Resource] : s.Resource;
+            const objectAction = actions.some(
+                (a) => a.includes('Object') || objectActions.includes(a)
+            );
             // wildcardObjectAction checks for actions such as 's3:*' or
             // 's3:Put*' but will return false for actions such as
             // 's3:PutBucket*'
             const wildcardObjectAction = actions.some(
-                a => a.includes('*') && !a.includes('Bucket'));
-            const objectResource = resources.some(r => r.includes('/'));
-            return ((objectAction && !objectResource) ||
-                (objectResource && !objectAction && !wildcardObjectAction));
+                (a) => a.includes('*') && !a.includes('Bucket')
+            );
+            const objectResource = resources.some((r) => r.includes('/'));
+            return (
+                (objectAction && !objectResource) ||
+                (objectResource && !objectAction && !wildcardObjectAction)
+            );
         });
         if (invalid) {
-            return { error: errors.MalformedPolicy.customizeDescription(
-                'Action does not apply to any resource(s) in statement') };
+            return {
+                error: errors.MalformedPolicy.customizeDescription(
+                    'Action does not apply to any resource(s) in statement'
+                ),
+            };
         }
         return {};
     }
 
     /**
      * Call resource policy schema validation function
-     * @param policy - the bucket policy object to validate
+     * @param {object} policy - the bucket policy object to validate
+     * @return {undefined}
      */
-    static validatePolicy(policy: any) {
+    static validatePolicy(policy) {
         // only the BucketInfo constructor calls this function
         // and BucketInfo will always be passed an object
         const validated = validateResourcePolicy(JSON.stringify(policy));

lib/models/LifecycleRule.ts

@@ -1,37 +1,12 @@
 import uuid from 'uuid/v4';
 
-export type Status = 'Disabled' | 'Enabled';
-export type Tag = { Key: string; Value: string };
-export type Tags = Tag[];
-export type And = { Prefix?: string; Tags: Tags };
-export type Filter = { Prefix?: string; Tag?: Tag } | { And: And };
-export type Expiration = {
-    ExpiredObjectDeleteMarker?: number | boolean;
-    Date?: number | boolean;
-    Days?: number | boolean;
-};
-export type NoncurrentExpiration = {
-    NoncurrentDays: number | null;
-    NewerNoncurrentVersions: number | null;
-};
-
 /**
  * @class LifecycleRule
  *
  * @classdesc Simple get/set class to build a single Rule
  */
 export default class LifecycleRule {
-    id: string;
-    status: Status;
-    tags: Tags;
-    expiration?: Expiration;
-    ncvExpiration?: NoncurrentExpiration;
-    abortMPU?: { DaysAfterInitiation: number };
-    transitions?: any[];
-    ncvTransitions?: any[];
-    prefix?: string;
-
-    constructor(id: string, status: Status) {
+    constructor(id, status) {
         // defaults
         this.id = id || uuid();
         this.status = status === 'Disabled' ? 'Disabled' : 'Enabled';
@@ -39,23 +14,16 @@ export default class LifecycleRule {
     }
 
     build() {
-        const rule: {
-            ID: string;
-            Status: Status;
-            Expiration?: Expiration;
-            NoncurrentVersionExpiration?: NoncurrentExpiration;
-            AbortIncompleteMultipartUpload?: { DaysAfterInitiation: number };
-            Transitions?: any[];
-            NoncurrentVersionTransitions?: any[];
-            Filter?: Filter;
-            Prefix?: '';
-        } = { ID: this.id, Status: this.status };
+        const rule = {};
+
+        rule.ID = this.id;
+        rule.Status = this.status;
 
         if (this.expiration) {
             rule.Expiration = this.expiration;
         }
         if (this.ncvExpiration) {
-            rule.NoncurrentVersionExpiration = this.ncvExpiration
+            rule.NoncurrentVersionExpiration = this.ncvExpiration;
         }
         if (this.abortMPU) {
             rule.AbortIncompleteMultipartUpload = this.abortMPU;
@@ -63,11 +31,26 @@ export default class LifecycleRule {
         if (this.transitions) {
             rule.Transitions = this.transitions;
         }
-        if (this.ncvTransitions) {
-            rule.NoncurrentVersionTransitions = this.ncvTransitions;
-        }
 
-        const filter = this.buildFilter();
+
+        const filter = {};
+        if ((this.prefix && this.tags.length) || (this.tags.length > 1)) {
+            // And rule
+            const andRule = {};
+
+            if (this.prefix) {
+                andRule.Prefix = this.prefix;
+            }
+            andRule.Tags = this.tags;
+            filter.And = andRule;
+        } else {
+            if (this.prefix) {
+                filter.Prefix = this.prefix;
+            }
+            if (this.tags.length) {
+                filter.Tag = this.tags[0];
+            }
+        }
 
         if (Object.keys(filter).length > 0) {
             rule.Filter = filter;
@@ -78,27 +61,7 @@ export default class LifecycleRule {
         return rule;
     }
 
-    buildFilter() {
-        if ((this.prefix && this.tags.length) || this.tags.length > 1) {
-            // And rule
-            const And: And = { Tags: this.tags };
-            if (this.prefix) {
-                And.Prefix = this.prefix;
-            }
-            return { And };
-        } else {
-            const filter: Filter = {};
-            if (this.prefix) {
-                filter.Prefix = this.prefix;
-            }
-            if (this.tags.length > 0) {
-                filter.Tag = this.tags[0];
-            }
-            return filter;
-        }
-    }
-
-    addID(id: string) {
+    addID(id) {
         this.id = id;
         return this;
     }
@@ -108,12 +71,12 @@ export default class LifecycleRule {
         return this;
     }
 
-    addPrefix(prefix: string) {
+    addPrefix(prefix) {
         this.prefix = prefix;
         return this;
     }
 
-    addTag(key: string, value: string) {
+    addTag(key, value) {
         this.tags.push({
             Key: key,
             Value: value,
@@ -122,19 +85,17 @@ export default class LifecycleRule {
     }
 
     /**
-     * Expiration
-     * @param prop - Property must be defined in `validProps`
-     * @param value - integer for `Date` or `Days`, or boolean for `ExpiredObjectDeleteMarker`
-     */
-    addExpiration(prop: 'ExpiredObjectDeleteMarker', value: boolean): this;
-    addExpiration(prop: 'Date' | 'Days', value: number): this;
-    addExpiration(prop: string, value: number | boolean) {
+    * Expiration
+    * @param {string} prop - Property must be defined in `validProps`
+    * @param {integer|boolean} value - integer for `Date` or `Days`, or
+    *   boolean for `ExpiredObjectDeleteMarker`
+    * @return {undefined}
+    */
+    addExpiration(prop, value) {
         const validProps = ['Date', 'Days', 'ExpiredObjectDeleteMarker'];
-        if (validProps.includes(prop)) {
+        if (validProps.indexOf(prop) > -1) {
             this.expiration = this.expiration || {};
             if (prop === 'ExpiredObjectDeleteMarker') {
-                // FIXME
-                // @ts-expect-error
                 this.expiration[prop] = JSON.parse(value);
             } else {
                 this.expiration[prop] = value;
@@ -144,47 +105,32 @@ export default class LifecycleRule {
     }
 
     /**
-     * NoncurrentVersionExpiration
-     * @param prop - Property must be defined in `validProps`
-     * @param value - integer for `NoncurrentDays` and `NewerNoncurrentVersions` 
-     */
-    addNCVExpiration(prop: 'NoncurrentDays' | 'NewerNoncurrentVersions', value: number): this;
-    addNCVExpiration(prop: string, value: number) {
-        const validProps = ['NoncurrentDays', 'NewerNoncurrentVersions'];
-        if (validProps.includes(prop)) {
-            this.ncvExpiration = this.ncvExpiration || {
-                NoncurrentDays: null,
-                NewerNoncurrentVersions: null,
-            };
-            this.ncvExpiration[prop] = value;
-        }
+    * NoncurrentVersionExpiration
+    * @param {integer} days - NoncurrentDays
+    * @return {undefined}
+    */
+    addNCVExpiration(days) {
+        this.ncvExpiration = { NoncurrentDays: days };
         return this;
     }
 
     /**
-     * abortincompletemultipartupload
-     * @param days - DaysAfterInitiation
-     */
-    addAbortMPU(days: number) {
+    * AbortIncompleteMultipartUpload
+    * @param {integer} days - DaysAfterInitiation
+    * @return {undefined}
+    */
+    addAbortMPU(days) {
         this.abortMPU = { DaysAfterInitiation: days };
         return this;
     }
 
     /**
      * Transitions
-     * @param transitions - transitions
+     * @param {array} transitions - transitions
+     * @return {undefined}
      */
-    addTransitions(transitions: any[]) {
+    addTransitions(transitions) {
         this.transitions = transitions;
         return this;
     }
-
-    /**
-     * NonCurrentVersionTransitions
-     * @param nvcTransitions - NonCurrentVersionTransitions 
-     */
-    addNCVTransitions(nvcTransitions) {
-        this.ncvTransitions = nvcTransitions;
-        return this;
-    }
 }

lib/models/NotificationConfiguration.ts

@@ -5,7 +5,7 @@ import {
     supportedNotificationEvents,
     notificationArnPrefix,
 } from '../constants';
-import errors, { ArsenalError } from '../errors';
+import errors from '../errors';
 
 /**
  * Format of xml request:
@@ -52,26 +52,20 @@ import errors, { ArsenalError } from '../errors';
   */
 
 export default class NotificationConfiguration {
-    _parsedXml: any;
-    _config: {
-        error?: ArsenalError;
-        queueConfig?: any[];
-    };
-    _ids: Set<string>;
     /**
      * Create a Notification Configuration instance
-     * @param xml - parsed configuration xml
-     * @return - NotificationConfiguration instance
+     * @param {string} xml - parsed configuration xml
+     * @return {object} - NotificationConfiguration instance
      */
-    constructor(xml: any) {
+    constructor(xml) {
         this._parsedXml = xml;
         this._config = {};
-        this._ids = new Set();
+        this._ids = new Set([]);
     }
 
     /**
      * Get notification configuration
-     * @return - contains error if parsing failed
+     * @return {object} - contains error if parsing failed
      */
     getValidatedNotificationConfiguration() {
         const validationError = this._parseNotificationConfig();
@@ -83,7 +77,7 @@ export default class NotificationConfiguration {
 
     /**
      * Check that notification configuration is valid
-     * @return - error if parsing failed, else undefined
+     * @return {error | null} - error if parsing failed, else undefined
      */
     _parseNotificationConfig() {
         if (!this._parsedXml || this._parsedXml === '') {
@@ -101,19 +95,19 @@ export default class NotificationConfiguration {
             return null;
         }
         this._config.queueConfig = [];
-        let parseError: ArsenalError | undefined;
+        let parseError;
         for (let i = 0; i < queueConfig.length; i++) {
             const eventObj = this._parseEvents(queueConfig[i].Event);
             const filterObj = this._parseFilter(queueConfig[i].Filter);
             const idObj = this._parseId(queueConfig[i].Id);
             const arnObj = this._parseArn(queueConfig[i].Queue);
 
-            if ('error' in eventObj) {
+            if (eventObj.error) {
                 parseError = eventObj.error;
                 this._config = {};
                 break;
             }
-            if ('error' in filterObj) {
+            if (filterObj.error) {
                 parseError = filterObj.error;
                 this._config = {};
                 break;
@@ -135,43 +129,42 @@ export default class NotificationConfiguration {
                 filterRules: filterObj.filterRules,
             });
         }
-        return parseError ?? null;
+        return parseError;
     }
 
     /**
      * Check that events array is valid
-     * @param events - event array
-     * @return - contains error if parsing failed or events array
+     * @param {array} events - event array
+     * @return {object} - contains error if parsing failed or events array
      */
-    _parseEvents(events: any[]) {
-        if (!events || !events[0]) {
-            const msg = 'each queue configuration must contain an event';
-            const error = errors.MalformedXML.customizeDescription(msg);
-            return { error };
-        }
-        const eventsObj: { error?: ArsenalError, events: any[] } = {
-            events: [] as any[],
+    _parseEvents(events) {
+        const eventsObj = {
+            events: [],
         };
-        for (const e of events) {
+        if (!events || !events[0]) {
+            eventsObj.error = errors.MalformedXML.customizeDescription(
+                'each queue configuration must contain an event');
+            return eventsObj;
+        }
+        events.forEach(e => {
             if (!supportedNotificationEvents.has(e)) {
-                const msg = 'event array contains invalid or unsupported event';
-                const error = errors.MalformedXML.customizeDescription(msg);
-                return { error };
+                eventsObj.error = errors.MalformedXML.customizeDescription(
+                    'event array contains invalid or unsupported event');
             } else {
                 eventsObj.events.push(e);
             }
-        }
+        });
         return eventsObj;
     }
 
     /**
      * Check that filter array is valid
-     * @param filter - filter array
-     * @return - contains error if parsing failed or filter array
+     * @param {array} filter - filter array
+     * @return {object} - contains error if parsing failed or filter array
      */
-    _parseFilter(filter: any[]) {
+    _parseFilter(filter) {
         if (!filter || !filter[0]) {
-            return { filterRules: undefined };
+            return {};
         }
         if (!filter[0].S3Key || !filter[0].S3Key[0]) {
             return { error: errors.MalformedXML.customizeDescription(
@@ -182,7 +175,7 @@ export default class NotificationConfiguration {
             return { error: errors.MalformedXML.customizeDescription(
                 'if included, queue configuration filter must contain a rule') };
         }
-        const filterObj: { filterRules: { name: string; value: string }[] } = {
+        const filterObj = {
             filterRules: [],
         };
         const ruleArray = filterRules.FilterRule;
@@ -208,15 +201,15 @@ export default class NotificationConfiguration {
 
     /**
      * Check that id string is valid
-     * @param id - id string (optional)
-     * @return - contains error if parsing failed or id
+     * @param {string} id - id string (optional)
+     * @return {object} - contains error if parsing failed or id
      */
-    _parseId(id: string) {
+    _parseId(id) {
         if (id && id[0].length > 255) {
             return { error: errors.InvalidArgument.customizeDescription(
                 'queue configuration ID is greater than 255 characters long') };
         }
-        let validId: string;
+        let validId;
         if (!id || !id[0]) {
             // id is optional property, so create one if not provided or is ''
             // We generate 48-character alphanumeric, unique id for rule
@@ -235,10 +228,10 @@ export default class NotificationConfiguration {
 
     /**
      * Check that arn string is valid
-     * @param arn - queue arn
-     * @return - contains error if parsing failed or queue arn
+     * @param {string} arn - queue arn
+     * @return {object} - contains error if parsing failed or queue arn
      */
-    _parseArn(arn: string) {
+    _parseArn(arn) {
         if (!arn || !arn[0]) {
             return { error: errors.MalformedXML.customizeDescription(
                 'each queue configuration must contain a queue arn'),
@@ -256,21 +249,11 @@ export default class NotificationConfiguration {
 
     /**
      * Get XML representation of notification configuration object
-     * @param config - notification configuration object
-     * @return - XML representation of config
+     * @param {object} config - notification configuration object
+     * @return {string} - XML representation of config
      */
-    static getConfigXML(config: {
-        queueConfig: {
-            id: string;
-            events: string[];
-            queueArn: string;
-            filterRules: {
-                name: string;
-                value: string;
-            }[];
-        }[];
-    }) {
-        const xmlArray: string[] = [];
+    static getConfigXML(config) {
+        const xmlArray = [];
         if (config && config.queueConfig) {
             config.queueConfig.forEach(c => {
                 xmlArray.push('<QueueConfiguration>');
@@ -301,19 +284,20 @@ export default class NotificationConfiguration {
     /**
      * Validate the bucket metadata notification configuration structure and
      * value types
-     * @param config - The notificationconfiguration to validate
+     * @param {object} config - The notificationconfiguration to validate
+     * @return {undefined}
      */
-    static validateConfig(config: any) {
+    static validateConfig(config) {
         assert.strictEqual(typeof config, 'object');
         if (!config.queueConfig) {
             return;
         }
-        config.queueConfig.forEach((q: any) => {
+        config.queueConfig.forEach(q => {
             const { events, queueArn, filterRules, id } = q;
-            events.forEach((e: any) => assert.strictEqual(typeof e, 'string'));
+            events.forEach(e => assert.strictEqual(typeof e, 'string'));
             assert.strictEqual(typeof queueArn, 'string');
             if (filterRules) {
-                filterRules.forEach((f: any) => {
+                filterRules.forEach(f => {
                     assert.strictEqual(typeof f.name, 'string');
                     assert.strictEqual(typeof f.value, 'string');
                 });

lib/models/ObjectLockConfiguration.ts

@@ -1,12 +1,5 @@
 import assert from 'assert';
-import errors, { ArsenalError } from '../errors';
-
-export type Config = any;
-export type LockMode = 'GOVERNANCE' | 'COMPLIANCE';
-export type DefaultRetention = { Days: number } | { Years: number };
-export type ParsedRetention =
-    | { error: ArsenalError }
-    | { timeType: 'days' | 'years'; timeValue: number };
+import errors from '../errors';
 
 /**
  * Format of xml request:
@@ -34,22 +27,19 @@ export type ParsedRetention =
   * }
   */
 export default class ObjectLockConfiguration {
-    _parsedXml: any;
-    _config: Config;
-
     /**
      * Create an Object Lock Configuration instance
-     * @param xml - the parsed configuration xml
-     * @return - ObjectLockConfiguration instance
+     * @param {string} xml - the parsed configuration xml
+     * @return {object} - ObjectLockConfiguration instance
      */
-    constructor(xml: any) {
+    constructor(xml) {
         this._parsedXml = xml;
         this._config = {};
     }
 
     /**
      * Get the object lock configuration
-     * @return - contains error if parsing failed
+     * @return {object} - contains error if parsing failed
      */
     getValidatedObjectLockConfiguration() {
         const validConfig = this._parseObjectLockConfig();
@@ -61,128 +51,131 @@ export default class ObjectLockConfiguration {
 
     /**
      * Check that mode is valid
-     * @param mode - array containing mode value
-     * @return - contains error if parsing failed
+     * @param {array} mode - array containing mode value
+     * @return {object} - contains error if parsing failed
      */
-    _parseMode(mode: LockMode[]): { error: ArsenalError } | { mode: LockMode } {
+    _parseMode(mode) {
+        const validMode = {};
         const expectedModes = ['GOVERNANCE', 'COMPLIANCE'];
         if (!mode || !mode[0]) {
-            const msg = 'request xml does not contain Mode';
-            const error = errors.MalformedXML.customizeDescription(msg);
-            return { error };
+            validMode.error = errors.MalformedXML.customizeDescription(
+                'request xml does not contain Mode');
+            return validMode;
         }
         if (mode.length > 1) {
-            const msg = 'request xml contains more than one Mode';
-            const error = errors.MalformedXML.customizeDescription(msg);
-            return { error };
+            validMode.error = errors.MalformedXML.customizeDescription(
+                'request xml contains more than one Mode');
+            return validMode;
         }
         if (!expectedModes.includes(mode[0])) {
-            const msg = 'Mode request xml must be one of "GOVERNANCE", "COMPLIANCE"';
-            const error = errors.MalformedXML.customizeDescription(msg);
-            return { error };
+            validMode.error = errors.MalformedXML.customizeDescription(
+                'Mode request xml must be one of "GOVERNANCE", "COMPLIANCE"');
+            return validMode;
         }
-        return { mode: mode[0] };
+        validMode.mode = mode[0];
+        return validMode;
     }
 
     /**
      * Check that time limit is valid
-     * @param dr - DefaultRetention object containing days or years
-     * @return - contains error if parsing failed
+     * @param {object} dr - DefaultRetention object containing days or years
+     * @return {object} - contains error if parsing failed
      */
-    _parseTime(dr: DefaultRetention): ParsedRetention {
-        if ('Days' in dr && 'Years' in dr) {
-            const msg = 'request xml contains both Days and Years';
-            const error = errors.MalformedXML.customizeDescription(msg);
-            return { error };
+    _parseTime(dr) {
+        const validTime = {};
+        if (dr.Days && dr.Years) {
+            validTime.error = errors.MalformedXML.customizeDescription(
+                'request xml contains both Days and Years');
+            return validTime;
         }
-        const timeType = 'Days' in dr ? 'Days' : 'Years';
+        const timeType = dr.Days ? 'Days' : 'Years';
         if (!dr[timeType] || !dr[timeType][0]) {
-            const msg = 'request xml does not contain Days or Years';
-            const error = errors.MalformedXML.customizeDescription(msg);
-            return { error };
+            validTime.error = errors.MalformedXML.customizeDescription(
+                'request xml does not contain Days or Years');
+            return validTime;
         }
         if (dr[timeType].length > 1) {
-            const msg = 'request xml contains more than one retention period';
-            const error = errors.MalformedXML.customizeDescription(msg);
-            return { error };
+            validTime.error = errors.MalformedXML.customizeDescription(
+                'request xml contains more than one retention period');
+            return validTime;
         }
         const timeValue = Number.parseInt(dr[timeType][0], 10);
         if (Number.isNaN(timeValue)) {
-            const msg = 'request xml does not contain valid retention period';
-            const error = errors.MalformedXML.customizeDescription(msg);
-            return { error };
+            validTime.error = errors.MalformedXML.customizeDescription(
+                'request xml does not contain valid retention period');
+            return validTime;
         }
         if (timeValue < 1) {
-            const msg = 'retention period must be a positive integer';
-            const error = errors.InvalidArgument.customizeDescription(msg);
-            return { error };
+            validTime.error = errors.InvalidArgument.customizeDescription(
+                'retention period must be a positive integer');
+            return validTime;
         }
         if ((timeType === 'Days' && timeValue > 36500) ||
         (timeType === 'Years' && timeValue > 100)) {
-            const msg = 'retention period is too large';
-            const error = errors.InvalidArgument.customizeDescription(msg);
-            return { error };
+            validTime.error = errors.InvalidArgument.customizeDescription(
+                'retention period is too large');
+            return validTime;
         }
-        return {
-            timeType: timeType.toLowerCase() as 'days' | 'years',
-            timeValue: timeValue,
-        };
+        validTime.timeType = timeType.toLowerCase();
+        validTime.timeValue = timeValue;
+        return validTime;
     }
 
     /**
      * Check that object lock configuration is valid
-     * @return - contains error if parsing failed
+     * @return {object} - contains error if parsing failed
      */
     _parseObjectLockConfig() {
-        const validConfig: { error?: ArsenalError } = {};
+        const validConfig = {};
         if (!this._parsedXml || this._parsedXml === '') {
-            const msg = 'request xml is undefined or empty';
-            const error = errors.MalformedXML.customizeDescription(msg);
-            return { error };
+            validConfig.error = errors.MalformedXML.customizeDescription(
+                'request xml is undefined or empty');
+            return validConfig;
         }
         const objectLockConfig = this._parsedXml.ObjectLockConfiguration;
         if (!objectLockConfig || objectLockConfig === '') {
-            const msg = 'request xml does not include ObjectLockConfiguration';
-            const error = errors.MalformedXML.customizeDescription(msg);
-            return { error };
+            validConfig.error = errors.MalformedXML.customizeDescription(
+                'request xml does not include ObjectLockConfiguration');
+            return validConfig;
         }
         const objectLockEnabled = objectLockConfig.ObjectLockEnabled;
         if (!objectLockEnabled || objectLockEnabled[0] !== 'Enabled') {
-            const msg = 'request xml does not include valid ObjectLockEnabled';
-            const error = errors.MalformedXML.customizeDescription(msg);
-            return { error };
+            validConfig.error = errors.MalformedXML.customizeDescription(
+                'request xml does not include valid ObjectLockEnabled');
+            return validConfig;
         }
         const ruleArray = objectLockConfig.Rule;
         if (ruleArray) {
             if (ruleArray.length > 1) {
-                const msg = 'request xml contains more than one rule';
-                const error = errors.MalformedXML.customizeDescription(msg);
-                return { error };
+                validConfig.error = errors.MalformedXML.customizeDescription(
+                    'request xml contains more than one rule');
+                return validConfig;
             }
             const drArray = ruleArray[0].DefaultRetention;
             if (!drArray || !drArray[0] || drArray[0] === '') {
-                const msg = 'Rule request xml does not contain DefaultRetention';
-                const error = errors.MalformedXML.customizeDescription(msg);
-                return { error };
+                validConfig.error = errors.MalformedXML.customizeDescription(
+                    'Rule request xml does not contain DefaultRetention');
+                return validConfig;
             }
             if (!drArray[0].Mode || (!drArray[0].Days && !drArray[0].Years)) {
-                const msg =
+                validConfig.error = errors.MalformedXML.customizeDescription(
                     'DefaultRetention request xml does not contain Mode or ' +
-                    'retention period (Days or Years)';
-                const error = errors.MalformedXML.customizeDescription(msg);
-                return { error };
+                    'retention period (Days or Years)');
+                return validConfig;
             }
             const validMode = this._parseMode(drArray[0].Mode);
-            if ('error' in validMode) {
-                return validMode;
+            if (validMode.error) {
+                validConfig.error = validMode.error;
+                return validConfig;
             }
             const validTime = this._parseTime(drArray[0]);
-            if ('error' in validTime) {
-                return validTime;
+            if (validTime.error) {
+                validConfig.error = validTime.error;
+                return validConfig;
             }
             this._config.rule = {};
             this._config.rule.mode = validMode.mode;
-            this._config.rule[validTime.timeType!] = validTime.timeValue;
+            this._config.rule[validTime.timeType] = validTime.timeValue;
         }
         return validConfig;
     }
@@ -190,9 +183,10 @@ export default class ObjectLockConfiguration {
     /**
      * Validate the bucket metadata object lock configuration structure and
      * value types
-     * @param config - The object lock configuration to validate
+     * @param {object} config - The object lock configuration to validate
+     * @return {undefined}
      */
-    static validateConfig(config: any) {
+    static validateConfig(config) {
         assert.strictEqual(typeof config, 'object');
         const rule = config.rule;
         if (rule) {
@@ -208,10 +202,10 @@ export default class ObjectLockConfiguration {
 
     /**
      * Get the XML representation of the configuration object
-     * @param config - The bucket object lock configuration
-     * @return - The XML representation of the configuration
+     * @param {object} config - The bucket object lock configuration
+     * @return {string} - The XML representation of the configuration
      */
-    static getConfigXML(config: any) {
+    static getConfigXML(config) {
         // object lock is enabled on the bucket but object lock configuration
         // not set
         if (config.rule === undefined) {

lib/models/ObjectMDAmzRestore.ts

@@ -1,94 +0,0 @@
-/*
- * Code based on Yutaka Oishi (Fujifilm) contributions
- * Date: 11 Sep 2020
- */
-
-/**
- * class representing the x-amz-restore of object metadata.
- *
- * @class
- */
-export default class ObjectMDAmzRestore {
-    'expiry-date': Date | string;
-    'ongoing-request': boolean;
-
-    /**
-     *
-     * @constructor
-     * @param ongoingRequest ongoing-request
-     * @param [expiryDate] expiry-date
-     * @throws case of invalid parameter
-     */
-    constructor(ongoingRequest: boolean, expiryDate?: Date | string) {
-        this.setOngoingRequest(ongoingRequest);
-        this.setExpiryDate(expiryDate);
-    }
-
-    /**
-     *
-     * @param data archiveInfo
-     * @returns true if the provided object is valid
-     */
-    static isValid(data: { 'ongoing-request': boolean; 'expiry-date': Date | string }) {
-        try {
-            // eslint-disable-next-line no-new
-            new ObjectMDAmzRestore(data['ongoing-request'], data['expiry-date']);
-            return true;
-        } catch (err) {
-            return false;
-        }
-    }
-
-    /**
-     *
-     * @returns ongoing-request
-     */
-    getOngoingRequest() {
-        return this['ongoing-request'];
-    }
-
-    /**
-     *
-     * @param value ongoing-request
-     * @throws case of invalid parameter
-     */
-    setOngoingRequest(value?: boolean) {
-        if (value === undefined) {
-            throw new Error('ongoing-request is required.');
-        } else if (typeof value !== 'boolean') {
-            throw new Error('ongoing-request must be type of boolean.');
-        }
-        this['ongoing-request'] = value;
-    }
-
-    /**
-     *
-     * @returns expiry-date
-     */
-    getExpiryDate() {
-        return this['expiry-date'];
-    }
-
-    /**
-     *
-     * @param value expiry-date
-     * @throws case of invalid parameter
-     */
-    setExpiryDate(value?: Date | string) {
-        if (value) {
-            const checkWith = (new Date(value)).getTime();
-            if (Number.isNaN(Number(checkWith))) {
-                throw new Error('expiry-date is must be a valid Date.');
-            }
-            this['expiry-date'] = value;
-        }
-    }
-
-    /**
-     *
-     * @returns itself
-     */
-    getValue() {
-        return this;
-    }
-}

lib/models/ObjectMDArchive.ts

@@ -1,184 +0,0 @@
-/**
- * class representing the archive of object metadata.
- *
- * @class
- */
-export default class ObjectMDArchive {
-    archiveInfo: any;
-    // @ts-ignore
-    restoreRequestedAt: Date | string;
-    // @ts-ignore
-    restoreRequestedDays: number;
-    // @ts-ignore
-    restoreCompletedAt: Date | string;
-    // @ts-ignore
-    restoreWillExpireAt: Date | string;
-
-    /**
-     *
-     * @constructor
-     * @param archiveInfo contains the archive info set by the TLP and returned by the TLP jobs
-     * @param [restoreRequestedAt] set at the time restore request is made by the client
-     * @param [restoreRequestedDays] set at the time restore request is made by the client
-     * @param [restoreCompletedAt] set at the time of successful restore
-     * @param [restoreWillExpireAt] computed and stored at the time of restore
-     * @throws case of invalid parameter
-     */
-    constructor(
-        archiveInfo: any,
-        restoreRequestedAt?: Date | string,
-        restoreRequestedDays?: number,
-        restoreCompletedAt?: Date | string,
-        restoreWillExpireAt?: Date | string,
-    ) {
-        this.setArchiveInfo(archiveInfo);
-        this.setRestoreRequestedAt(restoreRequestedAt!);
-        this.setRestoreRequestedDays(restoreRequestedDays!);
-        this.setRestoreCompletedAt(restoreCompletedAt!);
-        this.setRestoreWillExpireAt(restoreWillExpireAt!);
-    }
-
-    /**
-     *
-     * @param data archiveInfo
-     * @returns true if the provided object is valid
-     */
-    static isValid(data: {
-        archiveInfo: any;
-        restoreRequestedAt?: Date;
-        restoreRequestedDays?: number;
-        restoreCompletedAt?: Date;
-        restoreWillExpireAt?: Date;
-    }) {
-        try {
-            // eslint-disable-next-line no-new
-            new ObjectMDArchive(
-                data.archiveInfo,
-                data.restoreRequestedAt,
-                data.restoreRequestedDays,
-                data.restoreCompletedAt,
-                data.restoreWillExpireAt,
-            );
-            return true;
-        } catch (err) {
-            return false;
-        }
-    }
-
-    /**
-     *
-     * @returns archiveInfo
-     */
-    getArchiveInfo() {
-        return this.archiveInfo;
-    }
-
-    /**
-     * @param value archiveInfo
-     * @throws case of invalid parameter
-     */
-    setArchiveInfo(value: any) {
-        if (!value) {
-            throw new Error('archiveInfo is required.');
-        } else if (typeof value !== 'object') {
-            throw new Error('archiveInfo must be type of object.');
-        }
-        this.archiveInfo = value;
-    }
-
-    /**
-     *
-     * @returns restoreRequestedAt
-     */
-    getRestoreRequestedAt() {
-        return this.restoreRequestedAt;
-    }
-    /**
-     * @param value restoreRequestedAt
-     * @throws case of invalid parameter
-     */
-    setRestoreRequestedAt(value: Date | string) {
-        if (value) {
-            const checkWith = (new Date(value)).getTime();
-            if (Number.isNaN(Number(checkWith))) {
-                throw new Error('restoreRequestedAt must be a valid Date.');
-            }
-            this.restoreRequestedAt = value;
-        }
-    }
-
-    /**
-     *
-     * @returns restoreRequestedDays
-     */
-    getRestoreRequestedDays() {
-        return this.restoreRequestedDays;
-    }
-    /**
-     * @param value restoreRequestedDays
-     * @throws case of invalid parameter
-     */
-    setRestoreRequestedDays(value: number) {
-        if (value) {
-            if (isNaN(value)) {
-                throw new Error('restoreRequestedDays must be type of Number.');
-            }
-            this.restoreRequestedDays = value;
-        }
-    }
-
-    /**
-     *
-     * @returns restoreCompletedAt
-     */
-    getRestoreCompletedAt() {
-        return this.restoreCompletedAt;
-    }
-    /**
-     * @param value restoreCompletedAt
-     * @throws case of invalid parameter
-     */
-    setRestoreCompletedAt(value: Date | string) {
-        if (value) {
-            if (!this.restoreRequestedAt || !this.restoreRequestedDays) {
-                throw new Error('restoreCompletedAt must be set after restoreRequestedAt and restoreRequestedDays.');
-            }
-            const checkWith = (new Date(value)).getTime();
-            if (Number.isNaN(Number(checkWith))) {
-                throw new Error('restoreCompletedAt must be a valid Date.');
-            }
-            this.restoreCompletedAt = value;
-        }
-    }
-    /**
-     *
-     * @returns restoreWillExpireAt
-     */
-    getRestoreWillExpireAt() {
-        return this.restoreWillExpireAt;
-    }
-    /**
-     * @param value restoreWillExpireAt
-     * @throws case of invalid parameter
-     */
-    setRestoreWillExpireAt(value: Date | string) {
-        if (value) {
-            if (!this.restoreRequestedAt || !this.restoreRequestedDays) {
-                throw new Error('restoreWillExpireAt must be set after restoreRequestedAt and restoreRequestedDays.');
-            }
-            const checkWith = (new Date(value)).getTime();
-            if (Number.isNaN(Number(checkWith))) {
-                throw new Error('restoreWillExpireAt must be a valid Date.');
-            }
-            this.restoreWillExpireAt = value;
-        }
-    }
-
-    /**
-     *
-     * @returns itself
-     */
-    getValue() {
-        return this;
-    }
-}

lib/models/ObjectMDAzureInfo.ts

@@ -3,60 +3,32 @@
  * Blob and Container objects.
  */
 export default class ObjectMDAzureInfo {
-    _data: {
-        containerPublicAccess: string;
-        containerStoredAccessPolicies: any[];
-        containerImmutabilityPolicy: any;
-        containerLegalHoldStatus: boolean;
-        containerDeletionInProgress: boolean;
-        blobType: string;
-        blobContentMD5: string;
-        blobIssuedETag: string;
-        blobCopyInfo: any;
-        blobSequenceNumber: number;
-        blobAccessTierChangeTime: Date;
-        blobUncommitted: boolean;
-    };
-
     /**
      * @constructor
-     * @param obj - Raw structure for the Azure info on Blob/Container
-     * @param obj.containerPublicAccess - Public access authorization
+     * @param {object} obj - Raw structure for the Azure info on Blob/Container
+     * @param {string} obj.containerPublicAccess - Public access authorization
      *   type
-     * @param obj.containerStoredAccessPolicies - Access policies
+     * @param {object[]} obj.containerStoredAccessPolicies - Access policies
      *   for Shared Access Signature bearer
-     * @param obj.containerImmutabilityPolicy - data immutability
+     * @param {object} obj.containerImmutabilityPolicy - data immutability
      *   policy for this container
-     * @param obj.containerLegalHoldStatus - legal hold status for
+     * @param {boolean} obj.containerLegalHoldStatus - legal hold status for
      *   this container
-     * @param obj.containerDeletionInProgress - deletion in progress
+     * @param {boolean} obj.containerDeletionInProgress - deletion in progress
      *   indicator for this container
-     * @param obj.blobType - defines the type of blob for this object
-     * @param obj.blobContentMD5 - whole object MD5 sum set by the
+     * @param {string} obj.blobType - defines the type of blob for this object
+     * @param {string} obj.blobContentMD5 - whole object MD5 sum set by the
      *   client through the Azure API
-     * @param obj.blobIssuedETag - backup of the issued ETag on MD only
+     * @param {string} obj.blobIssuedETag - backup of the issued ETag on MD only
      *   operations like Set Blob Properties and Set Blob Metadata
-     * @param obj.blobCopyInfo - information pertaining to past and
+     * @param {object} obj.blobCopyInfo - information pertaining to past and
      *   pending copy operation targeting this object
-     * @param obj.blobSequenceNumber - sequence number for a PageBlob
-     * @param obj.blobAccessTierChangeTime - date of change of tier
-     * @param obj.blobUncommitted - A block has been put for a
+     * @param {number} obj.blobSequenceNumber - sequence number for a PageBlob
+     * @param {Date} obj.blobAccessTierChangeTime - date of change of tier
+     * @param {boolean} obj.blobUncommitted - A block has been put for a
      *   nonexistent blob which is about to be created
      */
-    constructor(obj: {
-        containerPublicAccess: string;
-        containerStoredAccessPolicies: any[];
-        containerImmutabilityPolicy: any;
-        containerLegalHoldStatus: boolean;
-        containerDeletionInProgress: boolean;
-        blobType: string;
-        blobContentMD5: string;
-        blobIssuedETag: string;
-        blobCopyInfo: any;
-        blobSequenceNumber: number;
-        blobAccessTierChangeTime: Date;
-        blobUncommitted: boolean;
-    }) {
+    constructor(obj) {
         this._data = {
             containerPublicAccess: obj.containerPublicAccess,
             containerStoredAccessPolicies: obj.containerStoredAccessPolicies,
@@ -77,7 +49,7 @@ export default class ObjectMDAzureInfo {
         return this._data.containerPublicAccess;
     }
 
-    setContainerPublicAccess(containerPublicAccess: string) {
+    setContainerPublicAccess(containerPublicAccess) {
         this._data.containerPublicAccess = containerPublicAccess;
         return this;
     }
@@ -86,7 +58,7 @@ export default class ObjectMDAzureInfo {
         return this._data.containerStoredAccessPolicies;
     }
 
-    setContainerStoredAccessPolicies(containerStoredAccessPolicies: any[]) {
+    setContainerStoredAccessPolicies(containerStoredAccessPolicies) {
         this._data.containerStoredAccessPolicies =
             containerStoredAccessPolicies;
         return this;
@@ -96,7 +68,7 @@ export default class ObjectMDAzureInfo {
         return this._data.containerImmutabilityPolicy;
     }
 
-    setContainerImmutabilityPolicy(containerImmutabilityPolicy: any) {
+    setContainerImmutabilityPolicy(containerImmutabilityPolicy) {
         this._data.containerImmutabilityPolicy = containerImmutabilityPolicy;
         return this;
     }
@@ -105,7 +77,7 @@ export default class ObjectMDAzureInfo {
         return this._data.containerLegalHoldStatus;
     }
 
-    setContainerLegalHoldStatus(containerLegalHoldStatus: boolean) {
+    setContainerLegalHoldStatus(containerLegalHoldStatus) {
         this._data.containerLegalHoldStatus = containerLegalHoldStatus;
         return this;
     }
@@ -114,7 +86,7 @@ export default class ObjectMDAzureInfo {
         return this._data.containerDeletionInProgress;
     }
 
-    setContainerDeletionInProgress(containerDeletionInProgress: boolean) {
+    setContainerDeletionInProgress(containerDeletionInProgress) {
         this._data.containerDeletionInProgress = containerDeletionInProgress;
         return this;
     }
@@ -123,7 +95,7 @@ export default class ObjectMDAzureInfo {
         return this._data.blobType;
     }
 
-    setBlobType(blobType: string) {
+    setBlobType(blobType) {
         this._data.blobType = blobType;
         return this;
     }
@@ -132,7 +104,7 @@ export default class ObjectMDAzureInfo {
         return this._data.blobContentMD5;
     }
 
-    setBlobContentMD5(blobContentMD5: string) {
+    setBlobContentMD5(blobContentMD5) {
         this._data.blobContentMD5 = blobContentMD5;
         return this;
     }
@@ -141,7 +113,7 @@ export default class ObjectMDAzureInfo {
         return this._data.blobIssuedETag;
     }
 
-    setBlobIssuedETag(blobIssuedETag: string) {
+    setBlobIssuedETag(blobIssuedETag) {
         this._data.blobIssuedETag = blobIssuedETag;
         return this;
     }
@@ -150,7 +122,7 @@ export default class ObjectMDAzureInfo {
         return this._data.blobCopyInfo;
     }
 
-    setBlobCopyInfo(blobCopyInfo: any) {
+    setBlobCopyInfo(blobCopyInfo) {
         this._data.blobCopyInfo = blobCopyInfo;
         return this;
     }
@@ -159,7 +131,7 @@ export default class ObjectMDAzureInfo {
         return this._data.blobSequenceNumber;
     }
 
-    setBlobSequenceNumber(blobSequenceNumber: number) {
+    setBlobSequenceNumber(blobSequenceNumber) {
         this._data.blobSequenceNumber = blobSequenceNumber;
         return this;
     }
@@ -168,7 +140,7 @@ export default class ObjectMDAzureInfo {
         return this._data.blobAccessTierChangeTime;
     }
 
-    setBlobAccessTierChangeTime(blobAccessTierChangeTime: Date) {
+    setBlobAccessTierChangeTime(blobAccessTierChangeTime) {
         this._data.blobAccessTierChangeTime = blobAccessTierChangeTime;
         return this;
     }
@@ -177,7 +149,7 @@ export default class ObjectMDAzureInfo {
         return this._data.blobUncommitted;
     }
 
-    setBlobUncommitted(blobUncommitted: boolean) {
+    setBlobUncommitted(blobUncommitted) {
         this._data.blobUncommitted = blobUncommitted;
         return this;
     }

lib/models/ObjectMDLocation.ts

@@ -1,49 +1,28 @@
-export type Ciphered = { cryptoScheme: number; cipheredDataKey: string };
-export type BaseLocation = { key: string; dataStoreName: string };
-export type Location = BaseLocation & {
-    start: number;
-    size: number;
-    dataStoreETag: string;
-    dataStoreVersionId: string;
-    blockId?: string;
-};
-export type ObjectMDLocationData = {
-    key: string;
-    start: number;
-    size: number;
-    dataStoreName: string;
-    dataStoreETag: string;
-    dataStoreVersionId: string;
-    blockId?: string;
-    cryptoScheme?: number;
-    cipheredDataKey?: string;
-};
 /**
  * Helper class to ease access to a single data location in metadata
  * 'location' array
  */
 export default class ObjectMDLocation {
-    _data: ObjectMDLocationData;
     /**
      * @constructor
-     * @param locationObj - single data location info
-     * @param locationObj.key - data backend key
-     * @param locationObj.start - index of first data byte of
+     * @param {object} locationObj - single data location info
+     * @param {string} locationObj.key - data backend key
+     * @param {number} locationObj.start - index of first data byte of
      *   this part in the full object
-     * @param locationObj.size - byte length of data part
-     * @param locationObj.dataStoreName - type of data store
-     * @param locationObj.dataStoreETag - internal ETag of
+     * @param {number} locationObj.size - byte length of data part
+     * @param {string} locationObj.dataStoreName - type of data store
+     * @param {string} locationObj.dataStoreETag - internal ETag of
      *   data part
-     * @param [locationObj.dataStoreVersionId] - versionId,
+     * @param {string} [locationObj.dataStoreVersionId] - versionId,
      *   needed for cloud backends
-     * @param [location.cryptoScheme] - if location data is
+     * @param {number} [location.cryptoScheme] - if location data is
      * encrypted: the encryption scheme version
-     * @param [location.cipheredDataKey] - if location data
+     * @param {string} [location.cipheredDataKey] - if location data
      * is encrypted: the base64-encoded ciphered data key
-     * @param [locationObj.blockId] - blockId of the part,
+     * @param {string} [locationObj.blockId] - blockId of the part,
      *   set by the Azure Blob Service REST API frontend
      */
-    constructor(locationObj: Location | (Location & Ciphered)) {
+    constructor(locationObj) {
         this._data = {
             key: locationObj.key,
             start: locationObj.start,
@@ -53,7 +32,7 @@ export default class ObjectMDLocation {
             dataStoreVersionId: locationObj.dataStoreVersionId,
             blockId: locationObj.blockId,
         };
-        if ('cryptoScheme' in locationObj) {
+        if (locationObj.cryptoScheme) {
             this._data.cryptoScheme = locationObj.cryptoScheme;
             this._data.cipheredDataKey = locationObj.cipheredDataKey;
         }
@@ -70,17 +49,17 @@ export default class ObjectMDLocation {
     /**
      * Update data location with new info
      *
-     * @param location - single data location info
-     * @param location.key - data backend key
-     * @param location.dataStoreName - type of data store
-     * @param [location.dataStoreVersionId] - data backend version ID
-     * @param [location.cryptoScheme] - if location data is
+     * @param {object} location - single data location info
+     * @param {string} location.key - data backend key
+     * @param {string} location.dataStoreName - type of data store
+     * @param {string} [location.dataStoreVersionId] - data backend version ID
+     * @param {number} [location.cryptoScheme] - if location data is
      * encrypted: the encryption scheme version
-     * @param [location.cipheredDataKey] - if location data
+     * @param {string} [location.cipheredDataKey] - if location data
      * is encrypted: the base64-encoded ciphered data key
-     * @return return this
+     * @return {ObjectMDLocation} return this
      */
-    setDataLocation(location: BaseLocation | (BaseLocation & Ciphered)) {
+    setDataLocation(location) {
         [
             'key',
             'dataStoreName',
@@ -117,16 +96,11 @@ export default class ObjectMDLocation {
         return this._data.start;
     }
 
-    setPartStart(start: number) {
-        this._data.start = start;
-        return this;
-    }
-
     getPartSize() {
         return this._data.size;
     }
 
-    setPartSize(size: number) {
+    setPartSize(size) {
         this._data.size = size;
         return this;
     }
@@ -143,7 +117,7 @@ export default class ObjectMDLocation {
         return this._data.blockId;
     }
 
-    setBlockId(blockId: string) {
+    setBlockId(blockId) {
         this._data.blockId = blockId;
         return this;
     }

lib/models/ReplicationConfiguration.ts

@@ -1,16 +1,17 @@
 import assert from 'assert';
 import UUID from 'uuid';
 
-import { RequestLogger } from 'werelogs';
-
 import escapeForXml from '../s3middleware/escapeForXml';
 import errors from '../errors';
 import { isValidBucketName } from '../s3routes/routesUtils';
-import { Status } from './LifecycleRule';
 
 const MAX_RULES = 1000;
 const RULE_ID_LIMIT = 255;
-const validStorageClasses = ['STANDARD', 'STANDARD_IA', 'REDUCED_REDUNDANCY'];
+const validStorageClasses = [
+    'STANDARD',
+    'STANDARD_IA',
+    'REDUCED_REDUNDANCY',
+];
 
 /**
     Example XML request:
@@ -36,45 +37,27 @@ const validStorageClasses = ['STANDARD', 'STANDARD_IA', 'REDUCED_REDUNDANCY'];
     </ReplicationConfiguration>
 */
 
-export type Rule = {
-    prefix: string;
-    enabled: boolean;
-    id: string;
-    storageClass?: any;
-};
-
-export type Destination = { StorageClass: string[]; Bucket: string };
-export type XMLRule = {
-    Prefix: string[];
-    Status: Status[];
-    ID?: string[];
-    Destination: Destination[];
-    Transition?: any[];
-    NoncurrentVersionTransition?: any[];
-    Filter?: string;
-};
-
 export default class ReplicationConfiguration {
-    _parsedXML: any;
-    _log: RequestLogger;
-    _config: any;
-    _configPrefixes: string[];
-    _configIDs: string[];
-    _role: string | null;
-    _destination: string | null;
-    _rules: Rule[] | null;
-    _prevStorageClass: null;
-    _hasScalityDestination: boolean | null;
-    _preferredReadLocation: string | null;
+    _parsedXML
+    _log
+    _config
+    _configPrefixes
+    _configIDs
+    _role
+    _destination
+    _rules
+    _prevStorageClass
+    _hasScalityDestination
+    _preferredReadLocation
 
     /**
      * Create a ReplicationConfiguration instance
-     * @param xml - The parsed XML
-     * @param log - Werelogs logger
-     * @param config - S3 server configuration
-     * @return - ReplicationConfiguration instance
+     * @param {string} xml - The parsed XML
+     * @param {object} log - Werelogs logger
+     * @param {object} config - S3 server configuration
+     * @return {object} - ReplicationConfiguration instance
      */
-    constructor(xml: any, log: RequestLogger, config: any) {
+    constructor(xml, log, config) {
         this._parsedXML = xml;
         this._log = log;
         this._config = config;
@@ -93,7 +76,7 @@ export default class ReplicationConfiguration {
 
     /**
      * Get the role of the bucket replication configuration
-     * @return - The role if defined, otherwise `null`
+     * @return {string|null} - The role if defined, otherwise `null`
      */
     getRole() {
         return this._role;
@@ -101,7 +84,7 @@ export default class ReplicationConfiguration {
 
     /**
      * The bucket to replicate data to
-     * @return - The bucket if defined, otherwise `null`
+     * @return {string|null} - The bucket if defined, otherwise `null`
      */
     getDestination() {
         return this._destination;
@@ -109,7 +92,7 @@ export default class ReplicationConfiguration {
 
     /**
      * The rules for replication configuration
-     * @return - The rules if defined, otherwise `null`
+     * @return {string|null} - The rules if defined, otherwise `null`
      */
     getRules() {
         return this._rules;
@@ -129,7 +112,7 @@ export default class ReplicationConfiguration {
 
     /**
      * Get the replication configuration
-     * @return - The replication configuration
+     * @return {object} - The replication configuration
      */
     getReplicationConfiguration() {
         return {
@@ -142,22 +125,18 @@ export default class ReplicationConfiguration {
 
     /**
      * Build the rule object from the parsed XML of the given rule
-     * @param rule - The rule object from this._parsedXML
-     * @return - The rule object to push into the `Rules` array
+     * @param {object} rule - The rule object from this._parsedXML
+     * @return {object} - The rule object to push into the `Rules` array
      */
-    _buildRuleObject(rule: XMLRule) {
-        const base = {
-            id: '',
+    _buildRuleObject(rule) {
+        const obj = {
             prefix: rule.Prefix[0],
             enabled: rule.Status[0] === 'Enabled',
         };
-        const obj: Rule = { ...base };
         // ID is an optional property, but create one if not provided or is ''.
         // We generate a 48-character alphanumeric, unique ID for the rule.
-        obj.id =
-            rule.ID && rule.ID[0] !== ''
-                ? rule.ID[0]
-                : Buffer.from(UUID.v4()).toString('base64');
+        obj.id = rule.ID && rule.ID[0] !== '' ? rule.ID[0] :
+            Buffer.from(UUID.v4()).toString('base64');
         // StorageClass is an optional property.
         if (rule.Destination[0].StorageClass) {
             obj.storageClass = rule.Destination[0].StorageClass[0];
@@ -167,10 +146,10 @@ export default class ReplicationConfiguration {
 
     /**
      * Check if the Role field of the replication configuration is valid
-     * @param ARN - The Role field value provided in the configuration
-     * @return `true` if a valid role ARN, `false` otherwise
+     * @param {string} ARN - The Role field value provided in the configuration
+     * @return {boolean} `true` if a valid role ARN, `false` otherwise
      */
-    _isValidRoleARN(ARN: string) {
+    _isValidRoleARN(ARN) {
         // AWS accepts a range of values for the Role field. Though this does
         // not encompass all constraints imposed by AWS, we have opted to
         // enforce the following.
@@ -187,32 +166,30 @@ export default class ReplicationConfiguration {
 
     /**
      * Check that the `Role` property of the configuration is valid
+     * @return {undefined}
      */
     _parseRole() {
         const parsedRole = this._parsedXML.ReplicationConfiguration.Role;
         if (!parsedRole) {
             return errors.MalformedXML;
         }
-        const role: string = parsedRole[0];
+        const role = parsedRole[0];
         const rolesArr = role.split(',');
         if (this._hasScalityDestination && rolesArr.length !== 2) {
             return errors.InvalidArgument.customizeDescription(
                 'Invalid Role specified in replication configuration: ' +
-                    'Role must be a comma-separated list of two IAM roles'
-            );
+                'Role must be a comma-separated list of two IAM roles');
         }
         if (!this._hasScalityDestination && rolesArr.length > 1) {
             return errors.InvalidArgument.customizeDescription(
                 'Invalid Role specified in replication configuration: ' +
-                    'Role may not contain a comma separator'
-            );
+                'Role may not contain a comma separator');
         }
-        const invalidRole = rolesArr.find((r) => !this._isValidRoleARN(r));
+        const invalidRole = rolesArr.find(r => !this._isValidRoleARN(r));
         if (invalidRole !== undefined) {
             return errors.InvalidArgument.customizeDescription(
                 'Invalid Role specified in replication configuration: ' +
-                    `'${invalidRole}'`
-            );
+                `'${invalidRole}'`);
         }
         this._role = role;
         return undefined;
@@ -220,6 +197,7 @@ export default class ReplicationConfiguration {
 
     /**
      * Check that the `Rules` property array is valid
+     * @return {undefined}
      */
     _parseRules() {
         // Note that the XML uses 'Rule' while the config object uses 'Rules'.
@@ -229,8 +207,7 @@ export default class ReplicationConfiguration {
         }
         if (Rule.length > MAX_RULES) {
             return errors.InvalidRequest.customizeDescription(
-                'Number of defined replication rules cannot exceed 1000'
-            );
+                'Number of defined replication rules cannot exceed 1000');
         }
         const err = this._parseEachRule(Rule);
         if (err) {
@@ -241,16 +218,15 @@ export default class ReplicationConfiguration {
 
     /**
      * Check that each rule in the `Rules` property array is valid
-     * @param rules - The rule array from this._parsedXML
+     * @param {array} rules - The rule array from this._parsedXML
+     * @return {undefined}
      */
-    _parseEachRule(rules: XMLRule[]) {
-        const rulesArr: Rule[] = [];
+    _parseEachRule(rules) {
+        const rulesArr = [];
         for (let i = 0; i < rules.length; i++) {
             const err =
-                this._parseStatus(rules[i]) ||
-                this._parsePrefix(rules[i]) ||
-                this._parseID(rules[i]) ||
-                this._parseDestination(rules[i]);
+                this._parseStatus(rules[i]) || this._parsePrefix(rules[i]) ||
+                this._parseID(rules[i]) || this._parseDestination(rules[i]);
             if (err) {
                 return err;
             }
@@ -262,9 +238,10 @@ export default class ReplicationConfiguration {
 
     /**
      * Check that the `Status` property is valid
-     * @param rule - The rule object from this._parsedXML
+     * @param {object} rule - The rule object from this._parsedXML
+     * @return {undefined}
      */
-    _parseStatus(rule: XMLRule) {
+    _parseStatus(rule) {
         const status = rule.Status && rule.Status[0];
         if (!status || !['Enabled', 'Disabled'].includes(status)) {
             return errors.MalformedXML;
@@ -274,19 +251,18 @@ export default class ReplicationConfiguration {
 
     /**
      * Check that the `Prefix` property is valid
-     * @param rule - The rule object from this._parsedXML
+     * @param {object} rule - The rule object from this._parsedXML
+     * @return {undefined}
      */
-    _parsePrefix(rule: XMLRule) {
+    _parsePrefix(rule) {
         const prefix = rule.Prefix && rule.Prefix[0];
         // An empty string prefix should be allowed.
         if (!prefix && prefix !== '') {
             return errors.MalformedXML;
         }
         if (prefix.length > 1024) {
-            return errors.InvalidArgument.customizeDescription(
-                'Rule prefix ' +
-                    'cannot be longer than maximum allowed key length of 1024'
-            );
+            return errors.InvalidArgument.customizeDescription('Rule prefix ' +
+                'cannot be longer than maximum allowed key length of 1024');
         }
         // Each Prefix in a list of rules must not overlap. For example, two
         // prefixes 'TaxDocs' and 'TaxDocs/2015' are overlapping. An empty
@@ -294,9 +270,8 @@ export default class ReplicationConfiguration {
         for (let i = 0; i < this._configPrefixes.length; i++) {
             const used = this._configPrefixes[i];
             if (prefix.startsWith(used) || used.startsWith(prefix)) {
-                return errors.InvalidRequest.customizeDescription(
-                    'Found ' + `overlapping prefixes '${used}' and '${prefix}'`
-                );
+                return errors.InvalidRequest.customizeDescription('Found ' +
+                    `overlapping prefixes '${used}' and '${prefix}'`);
             }
         }
         this._configPrefixes.push(prefix);
@@ -305,20 +280,19 @@ export default class ReplicationConfiguration {
 
     /**
      * Check that the `ID` property is valid
-     * @param rule - The rule object from this._parsedXML
+     * @param {object} rule - The rule object from this._parsedXML
+     * @return {undefined}
      */
-    _parseID(rule: XMLRule) {
+    _parseID(rule) {
         const id = rule.ID && rule.ID[0];
         if (id && id.length > RULE_ID_LIMIT) {
-            return errors.InvalidArgument.customizeDescription(
-                'Rule Id cannot be greater than 255'
-            );
+            return errors.InvalidArgument
+                .customizeDescription('Rule Id cannot be greater than 255');
         }
         // Each ID in a list of rules must be unique.
-        if (id && this._configIDs.includes(id)) {
+        if (this._configIDs.includes(id)) {
             return errors.InvalidRequest.customizeDescription(
-                'Rule Id must be unique'
-            );
+                'Rule Id must be unique');
         }
         if (id !== undefined) {
             this._configIDs.push(id);
@@ -328,14 +302,15 @@ export default class ReplicationConfiguration {
 
     /**
      * Check that the `StorageClass` property is valid
-     * @param destination - The destination object from this._parsedXML
+     * @param {object} destination - The destination object from this._parsedXML
+     * @return {undefined}
      */
-    _parseStorageClass(destination: Destination) {
+    _parseStorageClass(destination) {
         const { replicationEndpoints } = this._config;
         // The only condition where the default endpoint is possibly undefined
         // is if there is only a single replication endpoint.
         const defaultEndpoint =
-            replicationEndpoints.find((endpoint: any) => endpoint.default) ||
+            replicationEndpoints.find(endpoint => endpoint.default) ||
             replicationEndpoints[0];
         // StorageClass is optional.
         if (destination.StorageClass === undefined) {
@@ -357,15 +332,9 @@ export default class ReplicationConfiguration {
                     defaultEndpoint.type === undefined;
                 return true;
             }
-            const endpoint = replicationEndpoints.find(
-                (endpoint: any) => endpoint.site === storageClass
-            );
+            const endpoint = replicationEndpoints.find(endpoint =>
+                endpoint.site === storageClass);
             if (endpoint) {
-                // We do not support replication to cold location. 
-                // Only transition to cold location is supported.
-                if (endpoint.site && this._config.locationConstraints[endpoint.site]?.isCold) {
-                    return false;
-                }
                 // If this._hasScalityDestination was not set to true in any
                 // previous iteration or by a prior rule's storage class, then
                 // check if the current endpoint is a Scality destination.
@@ -386,9 +355,10 @@ export default class ReplicationConfiguration {
 
     /**
      * Check that the `Bucket` property is valid
-     * @param destination - The destination object from this._parsedXML
+     * @param {object} destination - The destination object from this._parsedXML
+     * @return {undefined}
      */
-    _parseBucket(destination: Destination) {
+    _parseBucket(destination) {
         const parsedBucketARN = destination.Bucket;
         // If there is no Scality destination, we get the destination bucket
         // from the location configuration.
@@ -401,8 +371,7 @@ export default class ReplicationConfiguration {
         const bucketARN = parsedBucketARN[0];
         if (!bucketARN) {
             return errors.InvalidArgument.customizeDescription(
-                'Destination bucket cannot be null or empty'
-            );
+                'Destination bucket cannot be null or empty');
         }
         const arr = bucketARN.split(':');
         const isValidARN =
@@ -412,20 +381,17 @@ export default class ReplicationConfiguration {
             arr[3] === '' &&
             arr[4] === '';
         if (!isValidARN) {
-            return errors.InvalidArgument.customizeDescription(
-                'Invalid bucket ARN'
-            );
+            return errors.InvalidArgument
+                .customizeDescription('Invalid bucket ARN');
         }
         if (!isValidBucketName(arr[5], [])) {
-            return errors.InvalidArgument.customizeDescription(
-                'The specified bucket is not valid'
-            );
+            return errors.InvalidArgument
+                .customizeDescription('The specified bucket is not valid');
         }
         // We can replicate objects only to one destination bucket.
         if (this._destination && this._destination !== bucketARN) {
             return errors.InvalidRequest.customizeDescription(
-                'The destination bucket must be same for all rules'
-            );
+                'The destination bucket must be same for all rules');
         }
         this._destination = bucketARN;
         return undefined;
@@ -433,9 +399,10 @@ export default class ReplicationConfiguration {
 
     /**
      * Check that the `destination` property is valid
-     * @param rule - The rule object from this._parsedXML
+     * @param {object} rule - The rule object from this._parsedXML
+     * @return {undefined}
      */
-    _parseDestination(rule: XMLRule) {
+    _parseDestination(rule) {
         const dest = rule.Destination && rule.Destination[0];
         if (!dest) {
             return errors.MalformedXML;
@@ -449,6 +416,7 @@ export default class ReplicationConfiguration {
 
     /**
      * Check that the request configuration is valid
+     * @return {undefined}
      */
     parseConfiguration() {
         const err = this._parseRules();
@@ -460,62 +428,48 @@ export default class ReplicationConfiguration {
 
     /**
      * Get the XML representation of the configuration object
-     * @param config - The bucket replication configuration
-     * @return - The XML representation of the configuration
+     * @param {object} config - The bucket replication configuration
+     * @return {string} - The XML representation of the configuration
      */
-    static getConfigXML(config: {
-        role: string;
-        destination: string;
-        rules: Rule[];
-    }) {
+    static getConfigXML(config) {
         const { role, destination, rules } = config;
         const Role = `<Role>${escapeForXml(role)}</Role>`;
         const Bucket = `<Bucket>${escapeForXml(destination)}</Bucket>`;
-        const rulesXML = rules
-            .map((rule) => {
-                const { prefix, enabled, storageClass, id } = rule;
-                const Prefix =
-                    prefix === ''
-                        ? '<Prefix/>'
-                        : `<Prefix>${escapeForXml(prefix)}</Prefix>`;
-                const Status = `<Status>${
-                    enabled ? 'Enabled' : 'Disabled'
-                }</Status>`;
-                const StorageClass = storageClass
-                    ? `<StorageClass>${storageClass}</StorageClass>`
-                    : '';
-                const Destination = `<Destination>${Bucket}${StorageClass}</Destination>`;
-                // If the ID property was omitted in the configuration object, we
-                // create an ID for the rule. Hence it is always defined.
-                const ID = `<ID>${escapeForXml(id)}</ID>`;
-                return `<Rule>${ID}${Prefix}${Status}${Destination}</Rule>`;
-            })
-            .join('');
-        return (
-            '<?xml version="1.0" encoding="UTF-8"?>' +
+        const rulesXML = rules.map(rule => {
+            const { prefix, enabled, storageClass, id } = rule;
+            const Prefix = prefix === '' ? '<Prefix/>' :
+                `<Prefix>${escapeForXml(prefix)}</Prefix>`;
+            const Status =
+                `<Status>${enabled ? 'Enabled' : 'Disabled'}</Status>`;
+            const StorageClass = storageClass ?
+                `<StorageClass>${storageClass}</StorageClass>` : '';
+            const Destination =
+                `<Destination>${Bucket}${StorageClass}</Destination>`;
+            // If the ID property was omitted in the configuration object, we
+            // create an ID for the rule. Hence it is always defined.
+            const ID = `<ID>${escapeForXml(id)}</ID>`;
+            return `<Rule>${ID}${Prefix}${Status}${Destination}</Rule>`;
+        }).join('');
+        return '<?xml version="1.0" encoding="UTF-8"?>' +
             '<ReplicationConfiguration ' +
-            'xmlns="http://s3.amazonaws.com/doc/2006-03-01/">' +
-            `${rulesXML}${Role}` +
-            '</ReplicationConfiguration>'
-        );
+                'xmlns="http://s3.amazonaws.com/doc/2006-03-01/">' +
+                `${rulesXML}${Role}` +
+            '</ReplicationConfiguration>';
     }
 
     /**
      * Validate the bucket metadata replication configuration structure and
      * value types
-     * @param config - The replication configuration to validate
+     * @param {object} config - The replication configuration to validate
+     * @return {undefined}
      */
-    static validateConfig(config: {
-        role: string;
-        destination: string;
-        rules: Rule[];
-    }) {
+    static validateConfig(config) {
         assert.strictEqual(typeof config, 'object');
         const { role, rules, destination } = config;
         assert.strictEqual(typeof role, 'string');
         assert.strictEqual(typeof destination, 'string');
         assert.strictEqual(Array.isArray(rules), true);
-        rules.forEach((rule) => {
+        rules.forEach(rule => {
             assert.strictEqual(typeof rule, 'object');
             const { prefix, enabled, id, storageClass } = rule;
             assert.strictEqual(typeof prefix, 'string');

lib/models/WebsiteConfiguration.ts

@@ -1,41 +1,25 @@
-/**
- * @param protocol - protocol to use for redirect
- * @param hostName - hostname to use for redirect
- * @param replaceKeyPrefixWith - string to replace keyPrefixEquals specified in condition
- * @param replaceKeyWith - string to replace key
- * @param httpRedirectCode - http redirect code
- */
-export type Redirect = {
-    protocol?: string;
-    hostName?: string;
-    replaceKeyPrefixWith?: string;
-    replaceKeyWith?: string;
-    httpRedirectCode: string;
-};
-
-/**
- * @param keyPrefixEquals - key prefix that triggers a redirect
- * @param httpErrorCodeReturnedEquals - http code that triggers a redirect
- */
-export type Condition = {
-    keyPrefixEquals?: string;
-    httpErrorCodeReturnedEquals?: string;
-};
-
-export type RoutingRuleParams = { redirect: Redirect; condition?: Condition };
-
 export class RoutingRule {
-    _redirect?: Redirect;
-    _condition?: Condition;
+    _redirect;
+    _condition;
 
     /**
     * Represents a routing rule in a website configuration.
     * @constructor
-    * @param params - object containing redirect and condition objects
-    * @param params.redirect - specifies how to redirect requests
-    * @param [params.condition] - specifies conditions for a redirect
+    * @param {object} params - object containing redirect and condition objects
+    * @param {object} params.redirect - specifies how to redirect requests
+    * @param {string} [params.redirect.protocol] - protocol to use for redirect
+    * @param {string} [params.redirect.hostName] - hostname to use for redirect
+    * @param {string} [params.redirect.replaceKeyPrefixWith] - string to replace
+    *   keyPrefixEquals specified in condition
+    * @param {string} [params.redirect.replaceKeyWith] - string to replace key
+    * @param {string} [params.redirect.httpRedirectCode] - http redirect code
+    * @param {object} [params.condition] - specifies conditions for a redirect
+    * @param {string} [params.condition.keyPrefixEquals] - key prefix that
+    *   triggers a redirect
+    * @param {string} [params.condition.httpErrorCodeReturnedEquals] - http code
+    *   that triggers a redirect
     */
-    constructor(params?: RoutingRuleParams) {
+    constructor(params) {
         if (params) {
             this._redirect = params.redirect;
             this._condition = params.condition;
@@ -44,7 +28,7 @@ export class RoutingRule {
 
     /**
     * Return copy of rule as plain object
-    * @return rule;
+    * @return {object} rule;
     */
     getRuleObject() {
         const rule = {
@@ -56,7 +40,7 @@ export class RoutingRule {
 
     /**
     * Return the condition object
-    * @return condition;
+    * @return {object} condition;
     */
     getCondition() {
         return this._condition;
@@ -64,45 +48,36 @@ export class RoutingRule {
 
     /**
     * Return the redirect object
-    * @return redirect;
+    * @return {object} redirect;
     */
     getRedirect() {
         return this._redirect;
     }
 }
 
-export type RedirectAllRequestsTo = {
-    hostName: string;
-    protocol?: string;
-};
 export class WebsiteConfiguration {
-    _indexDocument?: string;
-    _errorDocument?: string;
-    _redirectAllRequestsTo?: RedirectAllRequestsTo;
-    _routingRules?: RoutingRule[];
+    _indexDocument;
+    _errorDocument;
+    _redirectAllRequestsTo;
+    _routingRules;
 
     /**
     * Object that represents website configuration
     * @constructor
-    * @param params - object containing params to construct Object
-    * @param params.indexDocument - key for index document object
+    * @param {object} params - object containing params to construct Object
+    * @param {string} params.indexDocument - key for index document object
     *   required when redirectAllRequestsTo is undefined
-    * @param [params.errorDocument] - key for error document object
-    * @param params.redirectAllRequestsTo - object containing info
+    * @param {string} [params.errorDocument] - key for error document object
+    * @param {object} params.redirectAllRequestsTo - object containing info
     *   about how to redirect all requests
-    * @param params.redirectAllRequestsTo.hostName - hostName to use
+    * @param {string} params.redirectAllRequestsTo.hostName - hostName to use
     *   when redirecting all requests
-    * @param [params.redirectAllRequestsTo.protocol] - protocol to use
+    * @param {string} [params.redirectAllRequestsTo.protocol] - protocol to use
     *   when redirecting all requests ('http' or 'https')
-    * @param params.routingRules - array of Routing
+    * @param {(RoutingRule[]|object[])} params.routingRules - array of Routing
     *   Rule instances or plain routing rule objects to cast as RoutingRule's
     */
-    constructor(params: {
-        indexDocument: string;
-        errorDocument: string;
-        redirectAllRequestsTo: RedirectAllRequestsTo;
-        routingRules: RoutingRule[] | any[],
-    }) {
+    constructor(params) {
         if (params) {
             this._indexDocument = params.indexDocument;
             this._errorDocument = params.errorDocument;
@@ -113,34 +88,35 @@ export class WebsiteConfiguration {
 
     /**
     * Return plain object with configuration info
-    * @return - Object copy of class instance
+    * @return {object} - Object copy of class instance
     */
     getConfig() {
-        const base = {
+        const websiteConfig = {
             indexDocument: this._indexDocument,
             errorDocument: this._errorDocument,
             redirectAllRequestsTo: this._redirectAllRequestsTo,
         };
         if (this._routingRules) {
-            const routingRules = this._routingRules.map(r => r.getRuleObject());
-            return { ...base, routingRules };
+            websiteConfig.routingRules =
+            this._routingRules.map(rule => rule.getRuleObject());
         }
-        return { ...base };
+        return websiteConfig;
     }
 
     /**
     * Set the redirectAllRequestsTo
-    * @param obj - object to set as redirectAllRequestsTo
-    * @param obj.hostName - hostname for redirecting all requests
-    * @param [obj.protocol] - protocol for redirecting all requests
+    * @param {object} obj - object to set as redirectAllRequestsTo
+    * @param {string} obj.hostName - hostname for redirecting all requests
+    * @param {object} [obj.protocol] - protocol for redirecting all requests
+    * @return {undefined};
     */
-    setRedirectAllRequestsTo(obj: { hostName: string; protocol?: string }) {
+    setRedirectAllRequestsTo(obj) {
         this._redirectAllRequestsTo = obj;
     }
 
     /**
     * Return the redirectAllRequestsTo object
-    * @return redirectAllRequestsTo;
+    * @return {object} redirectAllRequestsTo;
     */
     getRedirectAllRequestsTo() {
         return this._redirectAllRequestsTo;
@@ -148,15 +124,16 @@ export class WebsiteConfiguration {
 
     /**
     * Set the index document object name
-    * @param suffix - index document object key
+    * @param {string} suffix - index document object key
+    * @return {undefined};
     */
-    setIndexDocument(suffix: string) {
+    setIndexDocument(suffix) {
         this._indexDocument = suffix;
     }
 
     /**
      * Get the index document object name
-     * @return indexDocument
+     * @return {string} indexDocument
      */
     getIndexDocument() {
         return this._indexDocument;
@@ -164,15 +141,16 @@ export class WebsiteConfiguration {
 
     /**
      * Set the error document object name
-     * @param key - error document object key
+     * @param {string} key - error document object key
+     * @return {undefined};
      */
-    setErrorDocument(key: string) {
+    setErrorDocument(key) {
         this._errorDocument = key;
     }
 
     /**
      * Get the error document object name
-     * @return errorDocument
+     * @return {string} errorDocument
      */
     getErrorDocument() {
         return this._errorDocument;
@@ -180,9 +158,10 @@ export class WebsiteConfiguration {
 
     /**
     * Set the whole RoutingRules array
-    * @param array - array to set as instance's RoutingRules
+    * @param {array} array - array to set as instance's RoutingRules
+    * @return {undefined};
     */
-    setRoutingRules(array?: (RoutingRule | RoutingRuleParams)[]) {
+    setRoutingRules(array) {
         if (array) {
             this._routingRules = array.map(rule => {
                 if (rule instanceof RoutingRule) {
@@ -195,9 +174,10 @@ export class WebsiteConfiguration {
 
     /**
      * Add a RoutingRule instance to routingRules array
-     * @param obj - rule to add to array
+     * @param {object} obj - rule to add to array
+     * @return {undefined};
      */
-    addRoutingRule(obj?: RoutingRule | RoutingRuleParams) {
+    addRoutingRule(obj) {
         if (!this._routingRules) {
             this._routingRules = [];
         }
@@ -210,7 +190,7 @@ export class WebsiteConfiguration {
 
     /**
      * Get routing rules
-     * @return - array of RoutingRule instances
+     * @return {RoutingRule[]} - array of RoutingRule instances
      */
     getRoutingRules() {
         return this._routingRules;

lib/models/index.ts

@@ -1,16 +1,14 @@
-export { default as ARN } from './ARN';
 export { default as BackendInfo } from './BackendInfo';
-export { default as BucketAzureInfo } from './BucketAzureInfo';
 export { default as BucketInfo } from './BucketInfo';
-export { default as BucketPolicy } from './BucketPolicy';
+export { default as BucketAzureInfo } from './BucketAzureInfo';
+export { default as ObjectMD } from './ObjectMD';
+export { default as ObjectMDLocation } from './ObjectMDLocation';
+export { default as ObjectMDAzureInfo } from './ObjectMDAzureInfo';
+export { default as ARN } from './ARN';
+export * as WebsiteConfiguration from './WebsiteConfiguration';
+export { default as ReplicationConfiguration } from './ReplicationConfiguration';
 export { default as LifecycleConfiguration } from './LifecycleConfiguration';
 export { default as LifecycleRule } from './LifecycleRule';
-export { default as NotificationConfiguration } from './NotificationConfiguration';
+export { default as BucketPolicy } from './BucketPolicy';
 export { default as ObjectLockConfiguration } from './ObjectLockConfiguration';
-export { default as ObjectMD } from './ObjectMD';
-export { default as ObjectMDAmzRestore } from './ObjectMDAmzRestore';
-export { default as ObjectMDArchive } from './ObjectMDArchive';
-export { default as ObjectMDAzureInfo } from './ObjectMDAzureInfo';
-export { default as ObjectMDLocation } from './ObjectMDLocation';
-export { default as ReplicationConfiguration } from './ReplicationConfiguration';
-export * as WebsiteConfiguration from './WebsiteConfiguration';
+export { default as NotificationConfiguration } from './NotificationConfiguration';

lib/network/RoundRobin.ts

@@ -1,13 +1,12 @@
-import { Logger } from 'werelogs';
-
 const DEFAULT_STICKY_COUNT = 100;
 
 /**
  * Shuffle an array in-place
  *
- * @param array - The array to shuffle
+ * @param {Array} array - The array to shuffle
+ * @return {undefined}
  */
-function shuffle(array: any[]) {
+function shuffle(array) {
     for (let i = array.length - 1; i > 0; i--) {
         const randIndex = Math.floor(Math.random() * (i + 1));
         /* eslint-disable no-param-reassign */
@@ -19,13 +18,6 @@ function shuffle(array: any[]) {
 }
 
 export default class RoundRobin {
-    logger?: Logger;
-    stickyCount: number;
-    defaultPort?: number;
-    hostsList: { host: string; port?: number }[]
-    hostIndex: number;
-    pickCount: number;
-
     /**
      * @constructor
      * @param {object[]|string[]} hostsList - list of hosts to query
@@ -37,10 +29,7 @@ export default class RoundRobin {
      *   to send to the same host before switching to the next one
      * @param {Logger} [options.logger] - logger object
      */
-    constructor(
-        hostsList: { host: string; port: number }[] | string[],
-        options?: { stickyCount?: number; logger?: Logger; defaultPort?: string },
-    ) {
+    constructor(hostsList, options) {
         if (hostsList.length === 0) {
             throw new Error(
                 'at least one host must be provided for round robin');
@@ -55,12 +44,9 @@ export default class RoundRobin {
         }
         if (options && options.defaultPort) {
             this.defaultPort = Number.parseInt(options.defaultPort, 10);
-            if (isNaN(this.defaultPort)) {
-                this.defaultPort = undefined;
-            }
         }
 
-        this.hostsList = hostsList.map((item: any) => this._validateHostObj(item));
+        this.hostsList = hostsList.map(item => this._validateHostObj(item));
 
         // TODO: add blacklisting capability
 
@@ -69,8 +55,8 @@ export default class RoundRobin {
         this.pickCount = 0;
     }
 
-    _validateHostObj(hostItem: string | { host: string; port: string }): { host: string; port?: number } {
-        const hostItemObj = { host: '', port: '' };
+    _validateHostObj(hostItem) {
+        const hostItemObj = {};
 
         if (typeof hostItem === 'string') {
             const hostParts = hostItem.split(':');
@@ -120,7 +106,7 @@ export default class RoundRobin {
      * Once all hosts have been returned once, the list is shuffled
      * and a new round-robin cycle starts.
      *
-     * @return a host object with { host, port } attributes
+     * @return {object} a host object with { host, port } attributes
      */
     pickHost() {
         if (this.logger) {
@@ -145,7 +131,7 @@ export default class RoundRobin {
      * Once all hosts have been returned once, the list is shuffled
      * and a new round-robin cycle starts.
      *
-     * @return a host object with { host, port } attributes
+     * @return {object} a host object with { host, port } attributes
      */
     pickNextHost() {
         // don't shuffle in this case because we want to force picking
@@ -159,13 +145,13 @@ export default class RoundRobin {
      * return the current host in round-robin, without changing the
      * round-robin state
      *
-     * @return a host object with { host, port } attributes
+     * @return {object} a host object with { host, port } attributes
      */
     getCurrentHost() {
         return this.hostsList[this.hostIndex];
     }
 
-    _roundRobinCurrentHost(params: { shuffle?: boolean }) {
+    _roundRobinCurrentHost(params) {
         this.hostIndex += 1;
         if (this.hostIndex === this.hostsList.length) {
             this.hostIndex = 0;

lib/network/http/server.ts

@@ -1,46 +1,20 @@
 import * as http from 'http';
 import * as https from 'https';
-import { https as HttpsAgent } from 'httpagent';
-import * as tls from 'tls';
-import * as net from 'net';
 import assert from 'assert';
 import { dhparam } from '../../https/dh2048';
 import { ciphers } from '../../https/ciphers';
 import errors from '../../errors';
 import { checkSupportIPv6 } from './utils';
-import { Logger } from 'werelogs';
+
 
 export default class Server {
-    _noDelay: boolean;
-    _cbOnListening: () => void;
-    _cbOnRequest: (req: http.IncomingMessage, res: http.ServerResponse) => void;
-    _cbOnCheckContinue: (req: http.IncomingMessage, res: http.ServerResponse) => void;
-    _cbOnCheckExpectation: (req: http.IncomingMessage, res: http.ServerResponse) => void;
-    _cbOnError: (err: Error) => boolean;
-    _cbOnStop: () => void;
-    _https: {
-        agent?: https.Agent;
-        ciphers: string;
-        dhparam: string;
-        cert?: string;
-        key?: string;
-        ca?: string[];
-        requestCert: boolean;
-        rejectUnauthorized: boolean;
-    };
-    _port: number;
-    _address: string;
-    _server: http.Server | https.Server | null;
-    _logger: Logger;
-    _keepAliveTimeout: number | null;
-
     /**
      * @constructor
      *
-     * @param port - Port to listen into
-     * @param logger - Logger object
+     * @param {number} port - Port to listen into
+     * @param {werelogs.Logger} logger - Logger object
      */
-    constructor(port: number, logger: Logger) {
+    constructor(port, logger) {
         assert.strictEqual(typeof port, 'number', 'Port must be a number');
         this._noDelay = true;
         this._cbOnListening = () => {};
@@ -57,6 +31,9 @@ export default class Server {
         this._https = {
             ciphers,
             dhparam,
+            cert: null,
+            key: null,
+            ca: null,
             requestCert: false,
             rejectUnauthorized: true,
         };
@@ -71,10 +48,10 @@ export default class Server {
      * Setter to noDelay, this disable the nagle tcp algorithm, reducing
      * latency for each request
      *
-     * @param value - { true: Disable, false: Enable }
-     * @return itself
+     * @param {boolean} value - { true: Disable, false: Enable }
+     * @return {Server} itself
      */
-    setNoDelay(value: boolean) {
+    setNoDelay(value) {
         this._noDelay = value;
         return this;
     }
@@ -84,10 +61,10 @@ export default class Server {
      * connections are automatically closed (default should be
      * 5 seconds in node.js)
      *
-     * @param keepAliveTimeout - keep-alive timeout in milliseconds
-     * @return - returns this
+     * @param {number} keepAliveTimeout - keep-alive timeout in milliseconds
+     * @return {Server} - returns this
      */
-    setKeepAliveTimeout(keepAliveTimeout: number) {
+    setKeepAliveTimeout(keepAliveTimeout) {
         this._keepAliveTimeout = keepAliveTimeout;
         return this;
     }
@@ -95,7 +72,7 @@ export default class Server {
     /**
      * Getter to access to the http/https server
      *
-     * @return http/https server
+     * @return {http.Server|https.Server} http/https server
      */
     getServer() {
         return this._server;
@@ -104,7 +81,7 @@ export default class Server {
     /**
      * Getter to access to the current authority certificate
      *
-     * @return Authority certificate
+     * @return {string} Authority certificate
      */
     getAuthorityCertificate() {
         return this._https.ca;
@@ -113,16 +90,17 @@ export default class Server {
     /**
      * Setter to the listening port
      *
-     * @param port - Port to listen into
+     * @param {number} port - Port to listen into
+     * @return {undefined}
      */
-    setPort(port: number) {
+    setPort(port) {
         this._port = port;
     }
 
     /**
      * Getter to access to the listening port
      *
-     * @return listening port
+     * @return {number} listening port
      */
     getPort() {
         return this._port;
@@ -131,16 +109,17 @@ export default class Server {
     /**
      * Setter to the bind address
      *
-     * @param address - address bound to the socket
+     * @param {String} address - address bound to the socket
+     * @return {undefined}
      */
-    setBindAddress(address: string) {
+    setBindAddress(address) {
         this._address = address;
     }
 
     /**
      * Getter to access the bind address
      *
-     * @return address bound to the socket
+     * @return {String} address bound to the socket
      */
     getBindAddress() {
         return this._address;
@@ -149,7 +128,7 @@ export default class Server {
     /**
      * Getter to access to the noDelay (nagle algorithm) configuration
      *
-     * @return - { true: Disable, false: Enable }
+     * @return {boolean} { true: Disable, false: Enable }
      */
     isNoDelay() {
         return this._noDelay;
@@ -158,7 +137,7 @@ export default class Server {
     /**
      * Getter to know if the server run under https or http
      *
-     * @return - { true: Https server, false: http server }
+     * @return {boolean} { true: Https server, false: http server }
      */
     isHttps() {
         return !!this._https.cert && !!this._https.key;
@@ -167,17 +146,20 @@ export default class Server {
     /**
      * Setter for the https configuration
      *
-     * @param [cert] - Content of the certificate
-     * @param [key] - Content of the key
-     * @param [ca] - Content of the authority certificate
-     * @param [twoWay] - Enable the two way exchange, which means
+     * @param {string} [cert] - Content of the certificate
+     * @param {string} [key] - Content of the key
+     * @param {string} [ca] - Content of the authority certificate
+     * @param {boolean} [twoWay] - Enable the two way exchange, which means
      *   each client needs to set up an ssl certificate
-     * @return itself
+     * @return {Server} itself
      */
-    setHttps(cert: string, key: string, ca: string, twoWay: boolean) {
+    setHttps(cert, key, ca, twoWay) {
         this._https = {
             ciphers,
             dhparam,
+            cert: null,
+            key: null,
+            ca: null,
             requestCert: false,
             rejectUnauthorized: true,
         };
@@ -201,10 +183,11 @@ export default class Server {
     /**
      * Function called when no handler specified in the server
      *
-     * @param _req - Request object
-     * @param res - Response object
+     * @param {http.IncomingMessage|https.IncomingMessage} req - Request object
+     * @param {http.ServerResponse} res - Response object
+     * @return {undefined}
      */
-    _noHandlerCb(_req: http.IncomingMessage, res: http.ServerResponse) {
+    _noHandlerCb(req, res) {
         // if no handler on the Server, send back an internal error
         const err = errors.InternalError;
         const msg = `${err.message}: No handler in Server`;
@@ -218,18 +201,23 @@ export default class Server {
     /**
      * Function called when request received
      *
-     * @param req - Request object
-     * @param res - Response object
+     * @param {http.IncomingMessage} req - Request object
+     * @param {http.ServerResponse} res - Response object
+     * @return {undefined}
      */
-    _onRequest(req: http.IncomingMessage, res: http.ServerResponse) {
+    _onRequest(req, res) {
         return this._cbOnRequest(req, res);
     }
 
-    /** Function called when the Server is listening */
+    /**
+     * Function called when the Server is listening
+     *
+     * @return {undefined}
+     */
     _onListening() {
         this._logger.info('Server is listening', {
             method: 'arsenal.network.Server._onListening',
-            address: this._server?.address(),
+            address: this._server.address(),
             serverIP: this._address,
             serverPort: this._port,
         });
@@ -239,10 +227,10 @@ export default class Server {
     /**
      * Function called when the Server sends back an error
      *
-     * @param err - Error to be sent back
-     * @return
+     * @param {Error} err - Error to be sent back
+     * @return {undefined}
      */
-    _onError(err: Error) {
+    _onError(err) {
         this._logger.error('Server error', {
             method: 'arsenal.network.Server._onError',
             port: this._port,
@@ -255,9 +243,13 @@ export default class Server {
         }
     }
 
-    /** Function called when the Server is stopped */
+    /**
+     * Function called when the Server is stopped
+     *
+     * @return {undefined}
+     */
     _onClose() {
-        if (this._server?.listening) {
+        if (this._server.listening) {
             this._logger.info('Server is stopped', {
                 address: this._server.address(),
             });
@@ -269,10 +261,10 @@ export default class Server {
     /**
      * Set the listening callback
      *
-     * @param cb - Callback()
-     * @return itself
+     * @param {function} cb - Callback()
+     * @return {Server} itself
      */
-    onListening(cb: () => void) {
+    onListening(cb) {
         assert.strictEqual(typeof cb, 'function',
             'Callback must be a function');
         this._cbOnListening = cb;
@@ -282,10 +274,10 @@ export default class Server {
     /**
      * Set the request handler callback
      *
-     * @param cb - Callback(req, res)
-     * @return itself
+     * @param {function} cb - Callback(req, res)
+     * @return {Server} itself
      */
-    onRequest(cb: (req: http.IncomingMessage, res: http.ServerResponse) => void) {
+    onRequest(cb) {
         assert.strictEqual(typeof cb, 'function',
             'Callback must be a function');
         this._cbOnRequest = cb;
@@ -295,10 +287,10 @@ export default class Server {
     /**
      * Set the checkExpectation handler callback
      *
-     * @param cb - Callback(req, res)
-     * @return itself
+     * @param {function} cb - Callback(req, res)
+     * @return {Server} itself
      */
-    onCheckExpectation(cb: (req: http.IncomingMessage, res: http.ServerResponse) => void) {
+    onCheckExpectation(cb) {
         assert.strictEqual(typeof cb, 'function',
             'Callback must be a function');
         this._cbOnCheckExpectation = cb;
@@ -308,10 +300,10 @@ export default class Server {
     /**
      * Set the checkContinue handler callback
      *
-     * @param cb - Callback(req, res)
-     * @return itself
+     * @param {function} cb - Callback(req, res)
+     * @return {Server} itself
      */
-    onCheckContinue(cb: (req: http.IncomingMessage, res: http.ServerResponse) => void) {
+    onCheckContinue(cb) {
         assert.strictEqual(typeof cb, 'function',
             'Callback must be a function');
         this._cbOnCheckContinue = cb;
@@ -322,10 +314,10 @@ export default class Server {
      * Set the error handler callback, if this handler returns true when an
      * error is triggered, the server will restart
      *
-     * @param cb - Callback(err)
-     * @return itself
+     * @param {function} cb - Callback(err)
+     * @return {Server} itself
      */
-    onError(cb: (err: Error) => boolean) {
+    onError(cb) {
         assert.strictEqual(typeof cb, 'function',
             'Callback must be a function');
         this._cbOnError = cb;
@@ -335,10 +327,10 @@ export default class Server {
     /**
      * Set the stop handler callback
      *
-     * @param cb - Callback()
-     * @return itself
+     * @param {function} cb - Callback()
+     * @return {Server} itself
      */
-    onStop(cb: () => void) {
+    onStop(cb) {
         assert.strictEqual(typeof cb, 'function',
             'Callback must be a function');
         this._cbOnStop = cb;
@@ -348,9 +340,10 @@ export default class Server {
     /**
      * Function called when a secure connection is etablished
      *
-     * @param sock - socket
+     * @param {tls.TlsSocket} sock - socket
+     * @return {undefined}
      */
-    _onSecureConnection(sock: tls.TLSSocket) {
+    _onSecureConnection(sock) {
         if (this._https.requestCert && !sock.authorized) {
             this._logger.error('rejected secure connection', {
                 address: sock.address(),
@@ -363,10 +356,11 @@ export default class Server {
     /**
      * function called when an error came from the client request
      *
-     * @param err - Error
-     * @param sock - Socket
+     * @param {Error} err - Error
+     * @param {net.Socket|tls.TlsSocket} sock - Socket
+     * @return {undefined}
      */
-    _onClientError(err: Error, sock: net.Socket | tls.TLSSocket) {
+    _onClientError(err, sock) {
         this._logger.error('client error', {
             method: 'arsenal.network.Server._onClientError',
             error: err.stack || err,
@@ -380,10 +374,11 @@ export default class Server {
      * Function called when request with an HTTP Expect header is received,
      * where the value is not 100-continue
      *
-     * @param req - Request object
-     * @param res - Response object
+     * @param {http.IncomingMessage|https.IncomingMessage} req - Request object
+     * @param {http.ServerResponse} res - Response object
+     * @return {undefined}
      */
-    _onCheckExpectation(req: http.IncomingMessage, res: http.ServerResponse) {
+    _onCheckExpectation(req, res) {
         return this._cbOnCheckExpectation(req, res);
     }
 
@@ -391,17 +386,18 @@ export default class Server {
      * Function called when request with an HTTP Expect: 100-continue
      * is received
      *
-     * @param req - Request object
-     * @param res - Response object
+     * @param {http.IncomingMessage|https.IncomingMessage} req - Request object
+     * @param {http.ServerResponse} res - Response object
+     * @return {undefined}
      */
-    _onCheckContinue(req: http.IncomingMessage, res: http.ServerResponse) {
+    _onCheckContinue(req, res) {
         return this._cbOnCheckContinue(req, res);
     }
 
     /**
      * Function to start the Server
      *
-     * @return itself
+     * @return {Server} itself
      */
     start() {
         if (!this._server) {
@@ -410,11 +406,7 @@ export default class Server {
                     method: 'arsenal.network.Server.start',
                     port: this._port,
                 });
-                this._https.agent = new HttpsAgent.Agent(this._https, {
-                    // Do not enforce the maximum number of sockets for the
-                    // main server, as it might be able to serve more clients.
-                    maxSockets: false,
-                });
+                this._https.agent = new https.Agent(this._https);
                 this._server = https.createServer(this._https,
                     (req, res) => this._onRequest(req, res));
             } else {
@@ -434,7 +426,6 @@ export default class Server {
                 sock => this._onSecureConnection(sock));
             this._server.on('connection', sock => {
                 // Setting no delay of the socket to the value configured
-                // TODO fix this
                 sock.setNoDelay(this.isNoDelay());
                 sock.on('error', err => this._logger.info(
                     'socket error - request rejected', { error: err }));
@@ -442,7 +433,6 @@ export default class Server {
             this._server.on('tlsClientError', (err, sock) =>
                 this._onClientError(err, sock));
             this._server.on('clientError', (err, sock) =>
-                // @ts-expect-errors
                 this._onClientError(err, sock));
             this._server.on('checkContinue', (req, res) =>
                 this._onCheckContinue(req, res));
@@ -457,7 +447,7 @@ export default class Server {
     /**
      * Function to stop the Server
      *
-     * @return itself
+     * @return {Server} itself
      */
     stop() {
         if (this._server) {

lib/network/http/utils.ts

@@ -1,12 +1,12 @@
 import * as os from 'os';
-import errors, { ArsenalError } from '../../errors';
+import errors from '../../errors';
 
 /**
  * Parse the Range header into an object
  *
- * @param rangeHeader - The 'Range' header value
+ * @param {String} rangeHeader - The 'Range' header value
 
- * @return object containing a range specification, with
+ * @return {Object} object containing a range specification, with
  * either of:
  * - start and end attributes: a fully specified range request
  * - a single start attribute: no end is specified in the range request
@@ -14,12 +14,7 @@ import errors, { ArsenalError } from '../../errors';
  * - an error attribute of type errors.InvalidArgument if the range
  *     syntax is invalid
  */
-export function parseRangeSpec(
-    rangeHeader: string
-):
-    | { error: ArsenalError }
-    | { suffix: number }
-    | { start: number; end?: number } {
+export function parseRangeSpec(rangeHeader) {
     const rangeMatch = /^bytes=([0-9]+)?-([0-9]+)?$/.exec(rangeHeader);
     if (rangeMatch) {
         const rangeValues = rangeMatch.slice(1, 3);
@@ -28,8 +23,7 @@ export function parseRangeSpec(
                 return { suffix: Number.parseInt(rangeValues[1], 10) };
             }
         } else {
-            const rangeSpec: { start: number; end?: number } =
-                { start: Number.parseInt(rangeValues[0], 10) };
+            const rangeSpec = { start: Number.parseInt(rangeValues[0], 10) };
             if (rangeValues[1] === undefined) {
                 return rangeSpec;
             }
@@ -46,11 +40,11 @@ export function parseRangeSpec(
  * Convert a range specification as given by parseRangeSpec() into a
  * fully specified absolute byte range
  *
- * @param rangeSpec - Parsed range specification as returned
+ * @param {Number []} rangeSpec - Parsed range specification as returned
  *   by parseRangeSpec()
- * @param objectSize - Total byte size of the whole object
+ * @param {Number} objectSize - Total byte size of the whole object
 
- * @return object containing either:
+ * @return {Object} object containing either:
  * - a 'range' attribute which is a fully specified byte range [start,
        end], as the inclusive absolute byte range to request from the
        object
@@ -59,11 +53,8 @@ export function parseRangeSpec(
  * - or an 'error' attribute of type errors.InvalidRange if the
  *     requested range is out of object's boundaries.
  */
-export function getByteRangeFromSpec(
-    rangeSpec: { suffix: number } | { start: number; end?: number },
-    objectSize: number
-): { error: ArsenalError } | { range: [number, number] } | {} {
-    if ('suffix' in rangeSpec) {
+export function getByteRangeFromSpec(rangeSpec, objectSize) {
+    if (rangeSpec.suffix !== undefined) {
         if (rangeSpec.suffix === 0) {
             // 0-byte suffix is always invalid (even on empty objects)
             return { error: errors.InvalidRange };
@@ -77,11 +68,10 @@ export function getByteRangeFromSpec(
             objectSize - 1] };
     }
     if (rangeSpec.start < objectSize) {
-        // test is false if end is undefined or end is greater than objectSize
-        const end: number = rangeSpec.end !== undefined && rangeSpec.end < objectSize
-            ? rangeSpec.end
-            : objectSize - 1;
-        return { range: [rangeSpec.start, end] };
+        // test is false if end is undefined
+        return { range: [rangeSpec.start,
+            (rangeSpec.end < objectSize ?
+                rangeSpec.end : objectSize - 1)] };
     }
     return { error: errors.InvalidRange };
 }
@@ -90,10 +80,10 @@ export function getByteRangeFromSpec(
  * Convenience function that combines parseRangeSpec() and
  * getByteRangeFromSpec()
  *
- * @param rangeHeader - The 'Range' header value
- * @param objectSize - Total byte size of the whole object
+ * @param {String} rangeHeader - The 'Range' header value
+ * @param {Number} objectSize - Total byte size of the whole object
 
- * @return object containing either:
+ * @return {Object} object containing either:
  * - a 'range' attribute which is a fully specified byte range [start,
  *     end], as the inclusive absolute byte range to request from the
  *     object
@@ -103,12 +93,9 @@ export function getByteRangeFromSpec(
  * - or an 'error' attribute instead of type errors.InvalidRange if
  *     the requested range is out of object's boundaries.
  */
- export function parseRange(
-     rangeHeader: string,
-     objectSize: number
- ): { range: [number, number] } | {} | { error: ArsenalError } {
+export function parseRange(rangeHeader, objectSize) {
     const rangeSpec = parseRangeSpec(rangeHeader);
-    if ('error' in rangeSpec) {
+    if (rangeSpec.error) {
         // invalid range syntax is silently ignored in HTTP spec,
         // hence returns the whole object
         return {};
@@ -118,6 +105,6 @@ export function getByteRangeFromSpec(
 
 export function checkSupportIPv6() {
     const niList = os.networkInterfaces();
-    return Object.keys(niList).some((network) =>
-        niList[network]?.some(intfc => intfc.family === 'IPv6'));
+    return Object.keys(niList).some(network =>
+        niList[network].some(intfc => intfc.family === 'IPv6'));
 }

lib/network/index.ts

@@ -1,17 +1,15 @@
 import server from './http/server';
-import * as utils from './http/utils';
+export * as rpc from './rpc/rpc';
+export * as level from './rpc/level-net';
 import RESTServer from './rest/RESTServer';
 import RESTClient from './rest/RESTClient';
+export { default as RoundRobin } from './RoundRobin';
 import * as ProbeServer from './probe/ProbeServer';
 import HealthProbeServer from './probe/HealthProbeServer';
 import * as Utils from './probe/Utils';
+export * as kmip from './kmip';
+export { default as kmipClient } from './kmip/Client';
 
-export const http = { server, utils };
+export const http = { server };
 export const rest = { RESTServer, RESTClient };
 export const probe = { ProbeServer, HealthProbeServer, Utils };
-
-export { default as RoundRobin } from './RoundRobin';
-export { default as kmip } from './kmip';
-export { default as kmipClient } from './kmip/Client';
-export * as rpc from './rpc/rpc';
-export * as level from './rpc/level-net';