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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  
19  package org.apache.giraph.comm.requests;
20  
21  import java.io.IOException;
22  
23  import org.apache.giraph.master.MasterGlobalCommHandler;
24  
25  /**
26   * Request to send final aggregated values from worker which owns
27   * aggregators to the master
28   */
29  public class SendReducedToMasterRequest extends ByteArrayRequest
30      implements MasterRequest {
31  
32    /**
33     * Constructor
34     *
35     * @param data Serialized aggregator data
36     */
37    public SendReducedToMasterRequest(byte[] data) {
38      super(data);
39    }
40  
41    /**
42     * Constructor used for reflection only
43     */
44    public SendReducedToMasterRequest() {
45    }
46  
47    @Override
48    public void doRequest(MasterGlobalCommHandler commHandler) {
49      try {
50        commHandler.getAggregatorHandler().acceptReducedValues(getDataInput());
51      } catch (IOException e) {
52        throw new IllegalStateException("doRequest: " +
53            "IOException occurred while processing request", e);
54      }
55    }
56  
57    @Override
58    public RequestType getType() {
59      return RequestType.SEND_AGGREGATORS_TO_MASTER_REQUEST;
60    }
61  }