/*

  * 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 org.apache.giraph.worker;

 import org.apache.giraph.conf.DefaultImmutableClassesGiraphConfigurable;

 import org.apache.giraph.master.AggregatorBroadcast;

 import org.apache.hadoop.io.Writable;

 import org.apache.hadoop.io.WritableComparable;

 /**

  * Class for delegating WorkerAggregatorUsage and

  * WorkerGlobalCommUsage methods to corresponding interface.

  *

  * @param <I> Vertex id

  * @param <V> Vertex data

  * @param <E> Edge data

  */

 public abstract class WorkerAggregatorDelegator<I extends WritableComparable,

   V extends Writable, E extends Writable>

   extends DefaultImmutableClassesGiraphConfigurable<I, V, E>

   implements WorkerAggregatorUsage, WorkerGlobalCommUsage {

   /** Worker aggregator usage */

   private WorkerGlobalCommUsage workerGlobalCommUsage;

   /**

    * Set worker global communication usage

    *

    * @param workerGlobalCommUsage Worker global communication usage

    */

   public void setWorkerGlobalCommUsage(

       WorkerGlobalCommUsage workerGlobalCommUsage) {

     this.workerGlobalCommUsage = workerGlobalCommUsage;

   }

   @Override

   public final void reduce(String name, Object value) {

     workerGlobalCommUsage.reduce(name, value);

   }

   @Override

   public void reduceMerge(String name, Writable value) {

     workerGlobalCommUsage.reduceMerge(name, value);

   }

   @Override

   public final <B extends Writable> B getBroadcast(String name) {

     return workerGlobalCommUsage.getBroadcast(name);

   }

   @Override

   public final <A extends Writable> void aggregate(String name, A value) {

     reduce(name, value);

   }

   @Override

   public <A extends Writable> A getAggregatedValue(String name) {

     AggregatorBroadcast<A> broadcast = workerGlobalCommUsage.getBroadcast(name);

     return broadcast.getValue();

   }

 }