Merge pull request #698 from ParsePlatform/nlutsenko.database.controller

Rename ExportAdapter to DatabaseController, start splitting Mongo specific logic.

Author: nlutsenko

spec/DatabaseController.spec.js

@@ -0,0 +1,17 @@
+'use strict';
+
+let DatabaseController = require('../src/Controllers/DatabaseController');
+let MongoStorageAdapter = require('../src/Adapters/Storage/Mongo/MongoStorageAdapter');
+
+describe('DatabaseController', () => {
+  it('can be constructed', done => {
+    let adapter = new MongoStorageAdapter('mongodb://localhost:27017/test');
+    let databaseController = new DatabaseController(adapter, {
+		collectionPrefix: 'test_'
+    });
+    databaseController.connect().then(done, error => {
+      console.log('error', error.stack);
+      fail();
+    });
+  });
+});

spec/ExportAdapter.spec.js

@@ -520,11 +520,11 @@ describe('Schema', () => {
       return obj2.save();
     })
     .then(() => {
-      config.database.db.collection('test__Join:aRelation:HasPointersAndRelations', { strict: true }, (err, coll) => {
+      config.database.adapter.database.collection('test__Join:aRelation:HasPointersAndRelations', { strict: true }, (err, coll) => {
         expect(err).toEqual(null);
         config.database.loadSchema()
-        .then(schema => schema.deleteField('aRelation', 'HasPointersAndRelations', config.database.db, 'test_'))
-        .then(() => config.database.db.collection('test__Join:aRelation:HasPointersAndRelations', { strict: true }, (err, coll) => {
+        .then(schema => schema.deleteField('aRelation', 'HasPointersAndRelations', config.database.adapter.database, 'test_'))
+        .then(() => config.database.adapter.database.collection('test__Join:aRelation:HasPointersAndRelations', { strict: true }, (err, coll) => {
           expect(err).not.toEqual(null);
           done();
         }))
@@ -538,7 +538,7 @@ describe('Schema', () => {
     var obj2 = hasAllPODobject();
     var p = Parse.Object.saveAll([obj1, obj2])
     .then(() => config.database.loadSchema())
-    .then(schema => schema.deleteField('aString', 'HasAllPOD', config.database.db, 'test_'))
+    .then(schema => schema.deleteField('aString', 'HasAllPOD', config.database.adapter.database, 'test_'))
     .then(() => new Parse.Query('HasAllPOD').get(obj1.id))
     .then(obj1Reloaded => {
       expect(obj1Reloaded.get('aString')).toEqual(undefined);
@@ -568,7 +568,7 @@ describe('Schema', () => {
       expect(obj1.get('aPointer').id).toEqual(obj1.id);
     })
     .then(() => config.database.loadSchema())
-    .then(schema => schema.deleteField('aPointer', 'NewClass', config.database.db, 'test_'))
+    .then(schema => schema.deleteField('aPointer', 'NewClass', config.database.adapter.database, 'test_'))
     .then(() => new Parse.Query('NewClass').get(obj1.id))
     .then(obj1 => {
       expect(obj1.get('aPointer')).toEqual(undefined);

spec/Schema.spec.js

@@ -710,10 +710,10 @@ describe('schemas', () => {
       }, (error, response, body) => {
         expect(response.statusCode).toEqual(200);
         expect(response.body).toEqual({});
-        config.database.db.collection('test__Join:aRelation:MyOtherClass', { strict: true }, (err, coll) => {
+        config.database.adapter.database.collection('test__Join:aRelation:MyOtherClass', { strict: true }, (err, coll) => {
           //Expect Join table to be gone
           expect(err).not.toEqual(null);
-          config.database.db.collection('test_MyOtherClass', { strict: true }, (err, coll) => {
+          config.database.adapter.database.collection('test_MyOtherClass', { strict: true }, (err, coll) => {
             // Expect data table to be gone
             expect(err).not.toEqual(null);
             request.get({

spec/schemas.spec.js

@@ -8,7 +8,7 @@
 // * getFileLocation(config, request, filename)
 //
 // Default is GridStoreAdapter, which requires mongo
-// and for the API server to be using the ExportAdapter
+// and for the API server to be using the DatabaseController with Mongo
 // database adapter.
 
 export class FilesAdapter {

src/Adapters/Files/FilesAdapter.js

@@ -11,7 +11,7 @@ export class GridStoreAdapter extends FilesAdapter {
   // Returns a promise
   createFile(config, filename, data) {
     return config.database.connect().then(() => {
-      let gridStore = new GridStore(config.database.db, filename, 'w');
+      let gridStore = new GridStore(config.database.adapter.database, filename, 'w');
       return gridStore.open();
     }).then((gridStore) => {
       return gridStore.write(data);
@@ -22,7 +22,7 @@ export class GridStoreAdapter extends FilesAdapter {
 
   deleteFile(config, filename) {
     return config.database.connect().then(() => {
-      let gridStore = new GridStore(config.database.db, filename, 'w');
+      let gridStore = new GridStore(config.database.adapter.database, filename, 'w');
       return gridStore.open();
     }).then((gridStore) => {
       return gridStore.unlink();
@@ -33,9 +33,9 @@ export class GridStoreAdapter extends FilesAdapter {
 
   getFileData(config, filename) {
     return config.database.connect().then(() => {
-      return GridStore.exist(config.database.db, filename);
+      return GridStore.exist(config.database.adapter.database, filename);
     }).then(() => {
-      let gridStore = new GridStore(config.database.db, filename, 'r');
+      let gridStore = new GridStore(config.database.adapter.database, filename, 'r');
       return gridStore.open();
     }).then((gridStore) => {
       return gridStore.read();

src/Adapters/Files/GridStoreAdapter.js

@@ -0,0 +1,49 @@
+
+let mongodb = require('mongodb');
+let MongoClient = mongodb.MongoClient;
+
+export class MongoStorageAdapter {
+  // Private
+  _uri: string;
+  // Public
+  connectionPromise;
+  database;
+
+  constructor(uri: string) {
+    this._uri = uri;
+  }
+
+  connect() {
+    if (this.connectionPromise) {
+      return this.connectionPromise;
+    }
+
+    this.connectionPromise = MongoClient.connect(this._uri).then(database => {
+      this.database = database;
+    });
+    return this.connectionPromise;
+  }
+
+  collection(name: string) {
+    return this.connect().then(() => {
+      return this.database.collection(name);
+    });
+  }
+
+  // Used for testing only right now.
+  collectionsContaining(match: string) {
+    return this.connect().then(() => {
+      return this.database.collections();
+    }).then(collections => {
+      return collections.filter(collection => {
+        if (collection.namespace.match(/\.system\./)) {
+          return false;
+        }
+        return (collection.collectionName.indexOf(match) == 0);
+      });
+    });
+  }
+}
+
+export default MongoStorageAdapter;
+module.exports = MongoStorageAdapter; // Required for tests