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 heatmap metric.
   * 
   * This class basically provides the following for each heatmap metric.
   * <ul>
   * <li> Provides number of slots in which temperature can fall.
   * <li> Maintains the maximum value so as to scale slot ranges.
   * <li> Gets JSON data from server and maps response for all hosts into above
   * slots.
   * </ul>
   * 
   */
  App.MainChartHeatmapMemoryUsedMetric = App.MainChartHeatmapMetric.extend({
    name: Em.I18n.t('charts.heatmap.metrics.memoryUsed'),
    maximumValue: 100,
    defaultMetric: 'metrics.memory',
    units: '%',
    slotDefinitionLabelSuffix: '%',
    metricMapper: function (json) {
      var hostToValueMap = {};
      var metricName = this.get('defaultMetric');
      if (json.items) {
        var props = metricName.split('.');
        json.items.forEach(function (item) {
          var value = item;
          props.forEach(function (prop) {
            if (value != null && prop in value) {
              value = value[prop];
            } else {
              value = null;
            }
          });
          if (value != null) {
            var total = value.mem_total;
            var used = value.mem_total - value.mem_free - value.mem_cached;
            value = ((used * 100) / total).toFixed(1);
            var hostName = item.Hosts.host_name;
            hostToValueMap[hostName] = value;
          }
        });
      }
      return hostToValueMap;
    }
  });