server/app.js

'use strict';
class AppBootHook {
  constructor(app) {
    this.app = app;
  }

  configWillLoad() {
    const mongoConfig = this.app.config.mongoose;
    const mongoClient = require('mongodb').MongoClient;
    const connectUrl = `mongodb://${mongoConfig.options.user}:${mongoConfig.options.pass}@localhost:27017/wxCache?authSource=admin`;
    mongoClient.connect(connectUrl, (err, db) => {
      if (db) this.app.config.canUseMongoDb = true;
      else this.app.config.canUseMongoDb = false;
    });
  }
  async didLoad() {
    // console.log(this.app);
  }

  async willReady() {
    // 所有的插件都已启动完毕，但是应用整体还未 ready
    // 可以做一些数据初始化等操作，这些操作成功才会启动应用

  }

}
module.exports = AppBootHook;