AngularJS global http polling service

Question

I\'m building a web app using AngularJS. The app needs to poll a URL that returns JSON data and make that data available to any part of the app. From what I\'ve read so far,

Answer 1

Here my solution:

app.factory('Poller', function($http, $timeout) {
  var data = { response: {}, calls: 0 };
  var poller = function() {
    $http.get('data.json').then(function(r) {
      data.response = r.data;
      data.calls++;
      $timeout(poller, 1000);
    });      
  };
  poller();

  return {
    data: data
  };
});

(calls just to show that polling is been done)

http://plnkr.co/edit/iMmhXTYweN4IrRrrpvMq?p=preview

EDIT: As Josh David Miller suggested in comments, dependency on this service should be added in app.run block to ensure polling is done from start:

app.run(function(Poller) {});

And also moved scheduling of next poll after previous call finished. So there would not be "stacking" of calls in case if polling hangs for a long time.

Updated plunker.