Promises gaaaaanz einfach...

testproms.js

var Q = require('q');

var myPromDemo = {}

myPromDemo.func1 = function() {
  //Deferred holen
  var deferred = Q.defer();
  console.log('Warte 10s');
  
  setTimeout(function(){
    console.log('Func1 ist fertig...');
    deferred.resolve(true);  
  },10000);
  return deferred.promise;

}

myPromDemo.func2 = function() {
  //Deferred holen
  var deferred = Q.defer();
  console.log('Warte 5s');
  setTimeout(function(){
    console.log('Func2 ist fertig...');
    deferred.resolve(true);  
  },5000);
  return deferred.promise;

}

myPromDemo.func3 = function() {
  //Deferred holen
  var deferred = Q.defer();
  console.log('Warte 30s');
  setTimeout(function(){
    console.log('Func3 ist fertig...');
    deferred.resolve(true);  
  },30000);
  return deferred.promise;
}

myPromDemo.demo = function() {
  //Orchestration von Promises
  myPromDemo.func1()
  .then(function(){
     console.log('Func1 sollte vorbei sein...');
     return myPromDemo.func2();
  })
  .then(function(){
     console.log('Func2 sollte vorbei sein...');
     return myPromDemo.func3();
  })
  .then(function(){
     console.log('Func3 sollte vorbei sein...');     
  })
  
}


module.exports = myPromDemo;