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WorkerAggregatorDelegator xref
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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *     http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing, software
13   * distributed under the License is distributed on an "AS IS" BASIS,
14   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15   * See the License for the specific language governing permissions and
16   * limitations under the License.
17   */
18  package org.apache.giraph.worker;
19  
20  import org.apache.giraph.conf.DefaultImmutableClassesGiraphConfigurable;
21  import org.apache.giraph.master.AggregatorBroadcast;
22  import org.apache.hadoop.io.Writable;
23  import org.apache.hadoop.io.WritableComparable;
24  
25  /**
26   * Class for delegating WorkerAggregatorUsage and
27   * WorkerGlobalCommUsage methods to corresponding interface.
28   *
29   * @param <I> Vertex id
30   * @param <V> Vertex data
31   * @param <E> Edge data
32   */
33  public abstract class WorkerAggregatorDelegator<I extends WritableComparable,
34    V extends Writable, E extends Writable>
35    extends DefaultImmutableClassesGiraphConfigurable<I, V, E>
36    implements WorkerAggregatorUsage, WorkerGlobalCommUsage {
37  
38    /** Worker aggregator usage */
39    private WorkerGlobalCommUsage workerGlobalCommUsage;
40  
41    /**
42     * Set worker global communication usage
43     *
44     * @param workerGlobalCommUsage Worker global communication usage
45     */
46    public void setWorkerGlobalCommUsage(
47        WorkerGlobalCommUsage workerGlobalCommUsage) {
48      this.workerGlobalCommUsage = workerGlobalCommUsage;
49    }
50  
51    @Override
52    public final void reduce(String name, Object value) {
53      workerGlobalCommUsage.reduce(name, value);
54    }
55  
56    @Override
57    public void reduceMerge(String name, Writable value) {
58      workerGlobalCommUsage.reduceMerge(name, value);
59    }
60  
61    @Override
62    public final <B extends Writable> B getBroadcast(String name) {
63      return workerGlobalCommUsage.getBroadcast(name);
64    }
65  
66    @Override
67    public final <A extends Writable> void aggregate(String name, A value) {
68      reduce(name, value);
69    }
70  
71    @Override
72    public <A extends Writable> A getAggregatedValue(String name) {
73      AggregatorBroadcast<A> broadcast = workerGlobalCommUsage.getBroadcast(name);
74      return broadcast.getValue();
75    }
76  }