add mongodb as optional database

package.json

@@ -35,6 +35,7 @@
     "gulp-sourcemaps": "1.6.0",
     "gulp-typescript": "2.11.0",
     "gulp-watch": "4.3.5",
+    "mongoose": "^4.4.6",
     "oauth2-server": "2.4.1",
     "pg": "4.4.4",
     "reflect-metadata": "0.1.3",

src/nodejs/WebAPI/config/index.js

@@ -0,0 +1,12 @@
+/**
+ * Created by ppa on 3/3/16.
+ */
+module.exports = {
+    db: {
+        // setup database type
+        /*type: 'mongo',
+        connectionString: 'mongodb://localhost/customer-sample-node'*/
+        type: 'postgres',
+        connectionString: 'postgres://postgres:Hallo11@localhost:5432/CustomerSampleNodejs'
+    }
+};

src/nodejs/WebAPI/database/mongo/customerModel.js

@@ -0,0 +1,41 @@
+/**
+ * Created by ppa on 3/3/16.
+ */
+const mongoose = require('mongoose'),
+    Schema = mongoose.Schema;
+
+var customerSchema = new Schema({
+    firstName: String,
+    lastName: String
+}, {
+    toObject: {virtuals: true},
+    toJSON: {virtuals: true}
+});
+
+customerSchema.virtual('id').get(function () {
+    return this._id;
+});
+
+var Customer = mongoose.model('Customer', customerSchema);
+
+module.exports = Customer;
+
+/**
+ * @swagger
+ * definitions:
+ *  CustomerModel:
+ *      required:
+ *          - id
+ *          - firstName
+ *          - lastName
+ *      properties:
+ *          id:
+ *              type: string
+ *              description: A unique identifier
+ *          firstName:
+ *              type: string
+ *              description: The first name of the given customer
+ *          lastName:
+ *              type: string
+ *              description: The last name of the given customer
+ */

src/nodejs/WebAPI/database/mongo/index.js

@@ -0,0 +1,10 @@
+'use strict';
+
+const mongoose = require('mongoose');
+
+// Using a provider pattern for db configuration and initialization
+module.exports = {
+    configure: (connectionString) => {
+        mongoose.connect(connectionString);
+    }
+};

src/nodejs/WebAPI/server/index.js

@@ -15,14 +15,18 @@ const restify = require('restify'),
 // Require the services
 const services = require('../service'),
 
+    // Require configuration
+    config = require('../config'),
+
 // Require the controllers
     controllers = require('../controllers'),
 
 // Require the reference token validation service
     referenceTokenValidation = require('./referenceTokenValidation'),
 
 // Require the database to configure it
-    database = require('../database');
+// use /database/{databaseType}, where databaseType [postgres, mongo]
+    database = require(`../database/${config.db.type}`);
 
 /**
  * Restify server exposing some APIs to manipulate customer data
@@ -65,8 +69,8 @@ function Server() {
         // Initialize all controllers
         controllers.initialize(server);
 
-        // Configure the database to use PostgreSQL
-        database.configure('postgres://CustomerSample:CustomerSample@localhost:5432/CustomerSampleNodejs');
+        // Configure the database to use PostgreSQL or Mongodb
+        database.configure(config.db.connectionString);
 
         // Configure services to use database as backend storage
         services.configure(false);
@@ -94,7 +98,7 @@ function Server() {
             host: `localhost:${port}`,
             // Reference the files containing the swagger definitions
             apis: [
-                path.join(__dirname, '..', 'database', 'customerModel.js'),
+                path.join(__dirname, '..', 'database', config.db.type, 'customerModel.js'),
                 path.join(__dirname, '..', 'controllers', 'customer.js')
             ],
             produces: ['application/json'],

src/nodejs/WebAPI/service/customer.mongo.js

@@ -0,0 +1,44 @@
+'use strict';
+
+const database = require('../database/mongo'),
+    Customer = require('../database/mongo/customerModel');
+
+/**
+ * @public
+ * @constructor
+ */
+function CustomerService() {
+    /**
+     * Returns a list of customers
+     * @returns {Promise<Array>}
+     */
+    this.list = () => {
+        return Customer.find();
+    };
+
+    /**
+     * Creates a new customer
+     * @param {string} firstName
+     * @param {string} lastName
+     * @returns {Promise}
+     */
+    this.create = (firstName, lastName) => {
+        var customer = new Customer({
+            firstName: firstName,
+                lastName: lastName
+        });
+
+        return  customer.save();
+    };
+
+    /**
+     * Removes a customer
+     * @param {number} id
+     * @returns {Promise}
+     */
+    this.remove = id => {
+        return Customer.find({_id: id}).remove().exec();
+    };
+}
+
+module.exports = new CustomerService();

src/nodejs/WebAPI/service/customer.database.js → src/nodejs/WebAPI/service/customer.postgres.js

@@ -1,6 +1,6 @@
 'use strict';
 
-const database = require('../database');
+const database = require('../database/postgres');
 
 /**
  * @public

src/nodejs/WebAPI/service/index.js

@@ -1,7 +1,8 @@
 'use strict';
 
 const customerInMemoryService = require('./customer.inmemory'),
-    customerDatabaseService = require('./customer.database');
+    globalConfig = require('../config'),
+    customerDatabaseService = require(`./customer.${globalConfig.db.type}`);
 
 let config = {};