タイムアウト処理をdeferredでゃる練習 コンソールで「node requestTimeoutDeferred 0」って打ったら、 loadイベントがタイムアウトょり早く発火した時の動き コンソールで「node requestTimeoutDeferred 1」って打ったら、 loadイベントが発火するょり前にタイムアウトの時間がきちゃった時の動き

requestTimeoutDeferred.js

var deferred = require('deferred');
var Backbone = require('backbone');
var _ = require('lodash');

var timer = [
  {load: 1000, timeout: 2000},
  {load: 3000, timeout: 2000}
];

var Sample = Backbone.Model.extend({
  initialize: function(){
    this.setTimer();
    this.setPromiseBehavior();
    this.setDelayedTrigger();
  },
  setTimer: function(){
    var selector = process.argv[2];
    if(!timer[selector]){
      throw new Error('Invalid timer selection');
    }
    this.timer = timer[selector];
  },
  setPromiseBehavior: function(){
    var promise = this.getPromise();
    promise.then(
      function(){
        console.log('loaded');
        console.log(arguments);
      },
      function(){
        console.log('error');
        console.log(arguments);
      }
    );
  },
  setDelayedTrigger: function(){
    _.delay(
      this.trigger.bind(this, 'load', {status: 200}),
      this.timer.load
    );
    _.delay(
      this.trigger.bind(this, 'timeout', 'Request timeout'),
      this.timer.timeout
    );
  },
  getPromise: function(){
    var def = deferred();
    this.once('timeout', function(message){
      def.reject(new Error(message));
    });
    this.once('load', def.resolve);
    return def.promise;
  }
});

new Sample();