lib/db.ts

@@ -148,7 +148,7 @@ 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'

package.json

@@ -3,7 +3,7 @@
   "engines": {
     "node": ">=16"
   },
-  "version": "7.10.57-1",
+  "version": "7.10.57",
   "description": "Common utilities for the S3 project components",
   "main": "build/index.js",
   "repository": {

tests/unit/db.spec.js

@@ -53,21 +53,12 @@ function checkKeyNotExistsInDB(db, key, cb) {
             return cb(err);
         }
         if (value) {
-            return cb(errors.EntityAlreadyExists);
+            return cb(errors.PreconditionFailed);
         }
         return cb();
     });
 }
 
-function checkKeyExistsInDB(db, key, callback) {
-    return db.get(key, err => {
-        if (err) {
-            return callback(err.notFound ? errors.NoSuchEntity : err);
-        }
-        return callback();
-    });
-}
-
 class ConditionalLevelDB {
     constructor() {
         this.db = createDb();
@@ -79,9 +70,6 @@ class ConditionalLevelDB {
             case ('notExists' in cond):
                 checkKeyNotExistsInDB(this.db, cond.notExists, asyncCallback);
                 break;
-            case ('exists' in cond):
-                checkKeyExistsInDB(this.db, cond.exists, asyncCallback);
-                break;
             default:
                 asyncCallback(new Error('unsupported conditional operation'));
             }
@@ -437,7 +425,7 @@ describe('IndexTransaction', () => {
                 value: value3,
             });
             return transaction.commit(err => {
-                if (!err || !err.is.EntityAlreadyExists) {
+                if (!err || !err.is.PreconditionFailed) {
                     return done(new Error('should not be able to conditional put for duplicate key'));
                 }
                 return async.parallel([
@@ -469,87 +457,11 @@ describe('IndexTransaction', () => {
     it('should not allow batch operation with unsupported condition', done => {
         const transaction = new IndexTransaction();
         try {
-            transaction.addCondition({ like: key1 });
+            transaction.addCondition({ exists: key1 });
             done(new Error('should fail for unsupported condition, currently supported - notExists'));
         } catch (err) {
             assert.strictEqual(err.unsupportedConditionalOperation, true);
             done();
         }
     });
-
-    it('should allow batch operation with key specified in exists condition is present in db', done => {
-        const db = new ConditionalLevelDB();
-        const { client } = db;
-        let transaction = new IndexTransaction(db);
-        transaction.put(key1, value1);
-        return async.series([
-            next => transaction.commit(next),
-            next => client.get(key1, next),
-        ], err => {
-            assert.ifError(err);
-            // create new transaction as previous transaction is already committed
-            transaction = new IndexTransaction(db);
-            transaction.addCondition({ exists: key1 });
-            transaction.push({
-                type: 'put',
-                key: key1,
-                value: value2,
-            });
-            return async.series([
-                next => transaction.commit(next),
-                next => client.get(key1, next),
-            ], (err, res) => {
-                assert.ifError(err);
-                assert.strictEqual(res[1], value2);
-                return done();
-            });
-        });
-    });
-
-    it('should not allow batch operation with key specified in exists condition is not in db', done => {
-        const db = new ConditionalLevelDB();
-        const { client } = db;
-        const transaction = new IndexTransaction(db);
-        transaction.addCondition({ exists: key1 });
-        transaction.push({
-            type: 'put',
-            key: key1,
-            value: value1,
-        });
-        return transaction.commit(err => {
-            assert.strictEqual(err && err.NoSuchEntity, true);
-            return checkKeyNotExistsInDB(client, key1, done);
-        });
-    });
-
-    it('should handle batch operations with multiple conditions correctly', done => {
-        const db = new ConditionalLevelDB();
-        const { client } = db;
-        let transaction = new IndexTransaction(db);
-        transaction.put(key1, value1);
-        return async.series([
-            next => transaction.commit(next),
-            next => client.get(key1, next),
-        ], err => {
-            assert.ifError(err);
-            // create new transaction as previous transaction is already committed
-            transaction = new IndexTransaction(db);
-            transaction.addCondition({ exists: key1 });
-            transaction.addCondition({ notExists: key2 });
-            transaction.push({
-                type: 'put',
-                key: key1,
-                value: value2,
-            });
-
-            return async.series([
-                next => transaction.commit(next),
-                next => client.get(key1, next),
-            ], (err, res) => {
-                assert.ifError(err);
-                assert.strictEqual(res[1], value2);
-                return done();
-            });
-        });
-    });
 });