wip [ci skip]

lib/algos/list/MPU.js

@@ -8,6 +8,11 @@ function numberDefault(num, defaultNum) {
     return Number.isNaN(parsedNum) ? defaultNum : parsedNum;
 }
 
+function inc(str) {
+    return str ? str.slice(0, str.length - 1)
+        + String.fromCharCode(str.charCodeAt(str.length - 1) + 1) : str;
+}
+
 /**
  *  Class for the MultipartUploads extension
  */
@@ -32,6 +37,28 @@ class MultipartUploads {
         this.delimiter = params.delimiter;
         this.splitter = params.splitter;
         this.logger = logger;
+        this._listingParams = {
+            limit: params.limit,
+            gte: params.gte,
+            lte: params.lte,
+            gt: params.gt,
+            lt: params.lt,
+            start: params.start,
+            keys: params.keys,
+            values: params.values,
+        };
+        if (params.keyMarker) {
+            this._listingParams.gt = `overview${params.splitter}` +
+                `${params.keyMarker}${params.splitter}`;
+            if (params.uploadIdMarker) {
+                this._listingParams.gt += `${params.uploadIdMarker}`;
+            }
+            this._listingParams.gt = inc(this._listingParams.gt);
+        }
+        if (params.prefix) {
+            this._listingParams.start = params.prefix;
+            this._listingParams.lt = inc(params.prefix);
+        }
     }
 
     /**
@@ -63,6 +90,11 @@ class MultipartUploads {
         this.NextUploadIdMarker = tmp.uploadId;
         ++this.keys;
     }
+
+    getListingParams() {
+        return this._listingParams;
+    }
+
     /**
      *  This function adds a common prefix to the CommonPrefixes array
      *  Set the NextKeyMarker to the current commonPrefix
@@ -88,7 +120,7 @@ class MultipartUploads {
         if (this.keys >= this.maxKeys) {
             // In cases of maxKeys <= 0 => IsTruncated = false
             this.IsTruncated = this.maxKeys > 0;
-            return false;
+            return 0;
         }
         const key = obj.key;
         const value = obj.value;
@@ -107,7 +139,7 @@ class MultipartUploads {
         } else {
             this.addUpload(value);
         }
-        return true;
+        return 1;
     }
 
     /**

lib/algos/list/basic.js

@@ -3,6 +3,20 @@
 const checkLimit = require('./tools').checkLimit;
 const DEFAULT_MAX_KEYS = 10000;
 
+/**
+ * Used for advancing the last character of a string for setting upper/lower
+ * bounds
+ * e.g. _setCharAt('demo1') results in 'demo2',
+ * _setCharAt('scality') results in 'scalitz'
+ * @param {String} str - string to be advanced
+ * @return {String} - modified string
+ */
+function _setCharAt(str) {
+    let chr = str.charCodeAt(str.length - 1);
+    chr = String.fromCharCode(chr + 1);
+    return str.substr(0, str.length - 1) + chr;
+}
+
 /**
  *  Class of an extension doing the simple listing
  */
@@ -10,21 +24,35 @@ class List {
     /**
      *  Constructor
      *  Set the logger and the res
-     *  @param {Object} parameters - The parameters you sent to DBD
+     *  @param {Object} params - The parameters you sent to DBD
      *  @param {RequestLogger} logger - The logger of the request
      *  @return {undefined}
      */
-    constructor(parameters, logger) {
+    constructor(params, logger) {
         this.logger = logger;
         this.res = [];
-        if (parameters) {
-            this.maxKeys = checkLimit(parameters.maxKeys, DEFAULT_MAX_KEYS);
-        } else {
-            this.maxKeys = DEFAULT_MAX_KEYS;
+        this._listingParams = {
+            limit: params.limit,
+            gte: params.gte,
+            lte: params.lte,
+            gt: params.gt,
+            lt: params.lt,
+            start: params.start,
+            keys: params.keys,
+            values: params.values,
+        };
+        if (params.prefix) {
+            this._listingParams.start = params.prefix;
+            this._listingParams.lt = _setCharAt(params.prefix);
         }
+        this.maxKeys = checkLimit(params.maxKeys, DEFAULT_MAX_KEYS);
         this.keys = 0;
     }
 
+    getListingParams() {
+        return this._listingParams;
+    }
+
     /**
      *  Function apply on each element
      *  Just add it to the array
@@ -34,11 +62,11 @@ class List {
     filter(elem) {
         // Check first in case of maxkeys <= 0
         if (this.keys >= this.maxKeys) {
-            return false;
+            return 0;
         }
         this.res.push(elem);
         this.keys++;
-        return true;
+        return 1;
     }
 
     /**

lib/algos/list/delimiter.js

@@ -1,5 +1,19 @@
 'use strict'; // eslint-disable-line strict
 
+/**
+ * Used for advancing the last character of a string for setting upper/lower
+ * bounds
+ * e.g. _setCharAt('demo1') results in 'demo2',
+ * _setCharAt('scality') results in 'scalitz'
+ * @param {String} str - string to be advanced
+ * @return {String} - modified string
+ */
+function _setCharAt(str) {
+    let chr = str.charCodeAt(str.length - 1);
+    chr = String.fromCharCode(chr + 1);
+    return str.substr(0, str.length - 1) + chr;
+}
+
 /**
  * Find the next delimiter in the path
  *
@@ -47,14 +61,31 @@ class Delimiter {
      * @param {Number} [parameters.maxKeys] - number of keys to list
      */
     constructor(parameters) {
+        this._listingParams = {
+            limit: parameters.limit,
+            gte: parameters.gte,
+            lte: parameters.lte,
+            gt: parameters.gt,
+            lt: parameters.lt,
+            start: parameters.start,
+            keys: parameters.keys,
+            values: parameters.values,
+        };
+        if (parameters.marker) {
+            this._listingParams.gt = parameters.marker;
+        }
+        if (parameters.prefix) {
+            this._listingParams.start = parameters.prefix;
+            this._listingParams.lt = _setCharAt(parameters.prefix);
+        }
         this.CommonPrefixes = [];
         this.Contents = [];
         this.IsTruncated = false;
-        this.NextMarker = parameters.gt;
+        this.NextMarker = this._listingParams.gt;
         this.keys = 0;
 
         this.delimiter = parameters.delimiter;
-        this.prefix = parameters.start;
+        this.prefix = this._listingParams.start;
         this.maxKeys = parameters.maxKeys || 1000;
         if (this.delimiter !== undefined &&
             this.NextMarker !== undefined &&
@@ -70,6 +101,10 @@ class Delimiter {
         }
     }
 
+    getListingParams() {
+        return this._listingParams;
+    }
+
     /**
      * check if the max keys count has been reached and set the
      * final state of the result if it is the case
@@ -94,7 +129,7 @@ class Delimiter {
      */
     addContents(key, value) {
         if (this._reachedMaxKeys()) {
-            return false;
+            return 0;
         }
         const tmp = JSON.parse(value);
         this.Contents.push({
@@ -117,7 +152,7 @@ class Delimiter {
         });
         this.NextMarker = key;
         ++this.keys;
-        return true;
+        return 1;
     }
 
     /**
@@ -137,7 +172,7 @@ class Delimiter {
         if ((this.prefix && !key.startsWith(this.prefix))
             || (typeof this.NextMarker === 'string' &&
                 key <= this.NextMarker)) {
-            return true;
+            return 1;
         }
         if (this.delimiter) {
             const baseIndex = this.prefix ? this.prefix.length : 0;
@@ -163,13 +198,13 @@ class Delimiter {
         if (this.CommonPrefixes.indexOf(commonPrefix) === -1
                 && this.NextMarker !== commonPrefix) {
             if (this._reachedMaxKeys()) {
-                return false;
+                return 0;
             }
             this.CommonPrefixes.push(commonPrefix);
             this.NextMarker = commonPrefix;
             ++this.keys;
         }
-        return true;
+        return 1;
     }
 
     /**

lib/algos/list/delimiterMaster.js

@@ -52,13 +52,13 @@ class DelimiterMaster extends Delimiter {
         if (this.keys >= this.maxKeys) {
             // In cases of maxKeys <= 0 => IsTruncated = false
             this.IsTruncated = this.maxKeys > 0;
-            return false;
+            return 0;
         }
         // <versioning>
         const value = VSUtils.decodeVersion(obj.value);
         // ignore it if the master version is a delete marker
         if (VSUtils.isDeleteMarker(value)) {
-            return true;
+            return 1;
         }
         // use the original object name for delimitering to work correctly
         const key = VSUtils.getObjectNameFromMasterKey(obj.key);
@@ -75,7 +75,7 @@ class DelimiterMaster extends Delimiter {
         } else {
             this.addContents(key, value);
         }
-        return true;
+        return 1;
     }
 }
 

lib/algos/list/delimiterVersions.js

@@ -60,7 +60,7 @@ class DelimiterVersions extends Delimiter {
         if (this.keys >= this.maxKeys) {
             // In cases of maxKeys <= 0 => IsTruncated = false
             this.IsTruncated = this.maxKeys > 0;
-            return false;
+            return 0;
         }
         // <versioning>
         const key = VSUtils.getObjectNameFromVersionKey(obj.key);
@@ -77,7 +77,7 @@ class DelimiterVersions extends Delimiter {
         } else {
             this.addContents(obj.key, obj.value);
         }
-        return true;
+        return 1;
     }
 
     /**

package.json

@@ -3,7 +3,7 @@
   "engines": {
     "node": "6.9.5"
   },
-  "version": "7.0.0",
+  "version": "7.0.0-1",
   "description": "Common utilities for the S3 project components",
   "main": "index.js",
   "repository": {

tests/unit/algos/list/basic.js

@@ -28,7 +28,6 @@ describe('Basic listing algorithm', () => {
         new Test('10000 elements', { maxKeys: 10000 }, data.slice(0, 10000)),
         new Test('more than limit', { maxKeys: 15000 }, data.slice(0, 10000)),
         new Test('default limit', {}, data.slice(0, 10000)),
-        new Test('without parameters', undefined, data.slice(0, 10000)),
         new Test('with bad parameters', 'lala', data.slice(0, 10000)),
     ];
     tests.forEach(test => {