text: /*
   * Copyright (C) 2013 salesforce.com, inc.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *         http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  var LTNG = "ltng";
  var PERF = "performance";
  var INTERACTION = "interaction";
  var USER = "user";
  var CLICK = "click";
  
  Aura.ExportsMetricsService = {
      "perfStart": function (name, attributes) {
          return $A.metricsService.transactionStart(LTNG, PERF, { "context": { "eventSource": name, "attributes": attributes }});
      },
      "perfEnd": function (name, attributes) {
          return $A.metricsService.transactionEnd(LTNG, PERF, { "context": { "eventSource": name, "attributes": attributes }});
      },
      "mark": function (ns, name, ctx) {
          return $A.metricsService.mark(ns, name, ctx);
      },
      "markStart": function (ns, name, ctx) {
          return $A.metricsService.markStart(ns, name, ctx);
      },
      "markEnd": function (ns, name, ctx) {
          return $A.metricsService.markEnd(ns, name, ctx);
      },
      "time": function () {
         return $A.metricsService.time();
      },
      "interaction": function (target, scope, context, eventSource) {
          return $A.metricsService.transaction(LTNG, INTERACTION, {
              "context": {
                  "eventSource" : eventSource || CLICK,
                  "eventType"   : USER,
                  "locator"     : {
                      "target"  : target,
                      "scope"   : scope,
                      "context" : context
                  }
              }
          });
      }
  };