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BlockComputation 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.block_app.framework.api.giraph;
19  
20  import java.io.IOException;
21  
22  import org.apache.giraph.block_app.framework.internal.BlockWorkerLogic;
23  import org.apache.giraph.block_app.framework.internal.BlockWorkerPieces;
24  import org.apache.giraph.graph.AbstractComputation;
25  import org.apache.giraph.graph.Vertex;
26  
27  
28  /**
29   * Computation that executes receiver and sender blocks passed
30   * into BlockWorkerPieces.
31   */
32  @SuppressWarnings({ "rawtypes", "unchecked" })
33  public final class BlockComputation extends AbstractComputation {
34    private BlockWorkerLogic workerLogic;
35  
36    @Override
37    public void preSuperstep() {
38      BlockWorkerPieces workerPieces =
39          BlockWorkerPieces.getNextWorkerPieces(this);
40      workerLogic = new BlockWorkerLogic(workerPieces);
41      BlockWorkerApiWrapper workerApi = new BlockWorkerApiWrapper<>(this);
42      workerLogic.preSuperstep(workerApi, workerApi);
43    }
44  
45    @Override
46    public void compute(Vertex vertex, Iterable messages) throws IOException {
47      workerLogic.compute(vertex, messages);
48    }
49  
50    @Override
51    public void postSuperstep() {
52      workerLogic.postSuperstep();
53    }
54  }