text: /**
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements. See the NOTICE file distributed with this
   * work for additional information regarding copyright ownership. The ASF
   * licenses this file to you 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 App = require('app');
  
  /**
   * Base class for any HDFS metric.
   */
  App.MainChartHeatmapDFSMetrics = App.MainChartHeatmapMetric.extend({
    metricUrlTemplate: "/clusters/{clusterName}/services/HDFS/components/DATANODE?fields=host_components/{metricName}",
  
    /**
     * Custom mapper for DFS metrics
     */
    metricMapper: function(json) {
      return this.metricMapperWithTransform(json, this.get('defaultMetric'), this.get('transformValue'));
    },
    /**
     * Utility function which allows extending classes to transform the value
     * assigned to a host.
     * 
     * @type Function
     */
    transformValue: null
  });