pollingService.js

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

  return {
    data: data
  };
});