快速使用ParseServe

这篇文章是从零开始使用ParseServe的更新版. ParseServe是一个简单的, 开箱即用的开源后端服务. 可以用来快速搭建一个配置服务或者是简单的存储服务.

使用

ParseServe可以和NodeJs的express服务来启动. 这也是一个比较正确的方式用来在一台机器上快速使用ParseServe. 具体做法可以参考其github页面上express相关的部分

其中, 一个关键的做法是写一个正确的入口文件(index.js)

// Parse Server and Parse Dashboard

var express = require('express');
var ParseServer = require('parse-server').ParseServer;
var ParseDashboard = require('parse-dashboard');
var path = require('path');

var appId = process.env.APP_ID || 'AppId';
var appName = process.env.APP_NAME || 'AppName';
var masterKey = process.env.MASTER_KEY || 'mk1'; //Add your master key here. Keep it secret!, it's required by dashboard.
var serverURL = process.env.SERVER_URL || 'http://localhost:1337/parse'; // Don't forget to change to https if needed

var databaseUri = process.env.DATABASE_URI || process.env.MONGODB_URI;
if (!databaseUri) {
  console.log('DATABASE_URI not specified, falling back to localhost.');
}

var api = new ParseServer({
  databaseURI: databaseUri || 'mongodb://localhost:27017/dev',
  cloud: process.env.CLOUD_CODE_MAIN || __dirname + '/cloud/main.js',
  appId: appId,
  masterKey: masterKey,
  serverURL: serverURL,
  liveQuery: {
    classNames: ["Posts", "Comments"] // List of classes to support for query subscriptions
  }
});
// Client-keys like the javascript key or the .NET key are not necessary with parse-server
// If you wish you require them, you can set them as options in the initialization above:
// javascriptKey, restAPIKey, dotNetKey, clientKey

///////////////////////////////////////////////////////////////////////////////
//Dashboard
///////////////////////////////////////////////////////////////////////////////
var dashboard = new ParseDashboard({
  "apps": [
    {
      "serverURL": serverURL,
      "appId": appId,
      "masterKey": masterKey,
      "appName": appName
    }
  ],
  "users": [
    {
      "user":"milo",
      "pass":"$2y$10$yryCWSnQgB893jH42.I1oei1jNd3rHR2qmkMrHlYUdolOe0OzKqky"
    },
    {
      "user":"admin",
      "pass":"$2y$10$IdaoDlon7NLpfAfgVfo0/euIU4lHHoQZT7i5UxKdLDVZz1MuBSGgq"
    }
  ],
  "useEncryptedPasswords": true
});

var app = express();

// Serve static assets from the /public folder
app.use('/public', express.static(path.join(__dirname, '/public')));

// Serve the Parse API on the /parse URL prefix
var mountPath = process.env.PARSE_MOUNT || '/parse';
app.use(mountPath, api);


// Serve the Parse API on the /parse URL prefix
var dashboardPath = process.env.DASHBOARD_MOUNT || '/dashboard';
app.use(dashboardPath, dashboard);


// // Parse Server plays nicely with the rest of your web routes
// app.get('/', function (req, res) {
//   res.status(200).send('I dream of being a website.  Please star the parse-server repo on GitHub!');
// });

// There will be a test page available on the /test path of your server url
// Remove this before launching your app
app.get('/test', function (req, res) {
  res.sendFile(path.join(__dirname, '/public/test.html'));
});


// Serve static assets from the /public folder
app.use('/', express.static(path.join(__dirname, '/web')));
// For Todo
app.get('/todo', function (req, res) {
  res.sendFile(path.join(__dirname, '/web/index.html'));
});

var port = process.env.PORT || 1337;
var httpServer = require('http').createServer(app);
httpServer.listen(port, function () {
  console.log('parse-server-example running on 127.0.0.1:' + port + '.');
});

// This will enable the Live Query real-time server
ParseServer.createLiveQueryServer(httpServer);

部署

使用PM2来部署nodejs应用已经是一个非常通用的方案了.
一个比较实用的方法是写一个*.yml文件, 比如deploybypm2.yml

apps:
  - script   : index.js
    name     : 'parse-server'
    instances: 0
    exec_mode: cluster
    watch  : true
    env    :
      NODE_ENV: development
    env_production:
      NODE_ENV: production

然后执行

pm2 start deploybypm2.yml 

就可以看到pm2根据系统的cpu核数自动启动了多个进程开始运行parse server了.