content: /**
   * 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.
   */
  package backtype.storm.metric.api;
  
  import java.util.HashMap;
  import java.util.Map;
  
  @Deprecated
  public class MultiReducedMetric implements IMetric {
      Map<String, ReducedMetric> _value = new HashMap<>();
      IReducer _reducer;
  
      public MultiReducedMetric(IReducer reducer) {
          _reducer = reducer;
      }
  
      public ReducedMetric scope(String key) {
          ReducedMetric val = _value.get(key);
          if (val == null) {
              _value.put(key, val = new ReducedMetric(_reducer));
          }
          return val;
      }
  
      public Object getValueAndReset() {
          Map ret = new HashMap();
          for (Map.Entry<String, ReducedMetric> e : _value.entrySet()) {
              Object val = e.getValue().getValueAndReset();
              if (val != null) {
                  ret.put(e.getKey(), val);
              }
          }
          return ret;
      }
  }
  