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

I forked @ValentynShybanov's factory code and added intervals calls (every second, every 5 secs, etc), also you can stop and start the poller as you wish:

http://plnkr.co/edit/EfsttAc4BtWSUiAU2lWf?p=preview

app.factory('Poller', function($http, $timeout) {
  var pollerData = {
    response: {},
    calls: 0,
    stop: false
  };

  var isChannelLive = function() {
    $http.get('data.json').then(function(r) {
      if (pollerData.calls > 30 && pollerData.stop === false) { // call every minute after the first ~30 secs
        var d = new Date();
        console.log('> 30: ' + d.toLocaleString() + ' - count: ' + pollerData.calls);
        pollerData.calls++;
        $timeout(isChannelLive, 10000);
      } else if (pollerData.calls > 15 && pollerData.calls <= 30 && pollerData.stop === false) { // after the first ~15 secs, then call every 5 secs
        var d = new Date();
        console.log('> 15 & <= 30: ' + d.toLocaleString() + ' - count: ' + pollerData.calls);
        pollerData.calls++;
        $timeout(isChannelLive, 5000);
      } else if (pollerData.calls <= 15 && pollerData.stop === false) { // call every 1 second during the first ~15 seconds
        var d = new Date();
        console.log('<= 15: ' + d.toLocaleString() + ' - count: ' + pollerData.calls);
        pollerData.calls++;
        $timeout(isChannelLive, 1000);
      }

      pollerData.response = r.data;
    });

  };
  var init = function() {
    if (pollerData.calls === 0) {
      pollerData.stop = false;
      isChannelLive();
    }
  };
  var stop = function() {
    pollerData.calls = 0;
    pollerData.stop = true;
  };

  return {
    pollerData: pollerData, // this should be private
    init: init,
    stop: stop
  };
});