grafana/panels/hits/module.js

angular.module('kibana.hits', [])
.controller('hits', function($scope, eventBus) {

  // Set and populate defaults
  var _d = {
    query   : "*",
    group   : "default",
    style   : { "font-size": '36pt', "font-weight": "bold" },
  }
  _.defaults($scope.panel,_d)

  $scope.init = function () {
    eventBus.register($scope,'time', function(event,time){set_time(time)});
    eventBus.register($scope,'query', function(event, query) {
      $scope.panel.query = _.isArray(query) ? query[0] : query;
      $scope.get_data();
    });
    // Now that we're all setup, request the time from our group
    eventBus.broadcast($scope.$id,$scope.panel.group,'get_time')
  }

  $scope.get_data = function() {
    // Make sure we have everything for the request to complete
    if(_.isUndefined($scope.panel.index) || _.isUndefined($scope.time))
      return

    var request = $scope.ejs.Request().indices($scope.panel.index);

    var results = request
      .query(ejs.FilteredQuery(
        ejs.QueryStringQuery($scope.panel.query || '*'),
        ejs.RangeFilter($scope.time.field)
          .from($scope.time.from)
          .to($scope.time.to)
        )
      )
      .size(0)
      .doSearch();

    // Populate scope when we have results
    results.then(function(results) {
      if(_.isUndefined(results)) {
        $scope.panel.error = 'Your query was unsuccessful';
        return;
      }
      $scope.panel.error =  false;
      $scope.hits = results.hits.total;
    });
  }

  function set_time(time) {
    $scope.time = time;
    $scope.panel.index = _.isUndefined(time.index) ? $scope.panel.index : time.index
    $scope.get_data();
  }

  $scope.init();

})