Learning playground for Bluebird.js

learn_bluebird.js

//
//  npm install bluebird
//  npm install superagent
//
var Promise = require('bluebird');
var request = require('superagent');

console.log('Promises with Bluebird');

function get(url) {

  var p = new Promise(function(resolve, reject) {
    request.get(url)
      .end(function(err, res) {
        if (err) {
          reject(err);
        } else {
          resolve(res.body);
        }

      });
  });
  return p;
}

var URL = 'http://httpbin.org';

var lista = [get(URL + '/ip'), get(URL + '/user-agent')];

Promise.all(lista)
  .spread(function(ip, agent) {
    console.log('IP', ip, 'AGENT', agent);
    return {
      ip: ip,
      agent: agent
    };
  })
  // .catch(function(err) {
  //     return { 'foo' : 'bar'}
  // })
  .then(function(obj) {
    console.log('Info', obj);
  })
  .catch(function(err) {
      console.log('ERROR ', err);
  })
  ;