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.hadoop.yarn.server.nodemanager.api.impl.pb.client;
19 
20 import java.io.Closeable;
21 import java.io.IOException;
22 import java.net.InetSocketAddress;
23 
24 import org.apache.hadoop.conf.Configuration;
25 import org.apache.hadoop.ipc.ProtobufRpcEngine;
26 import org.apache.hadoop.ipc.RPC;
27 import org.apache.hadoop.yarn.exceptions.YarnException;
28 import org.apache.hadoop.yarn.ipc.RPCUtil;
29 import org.apache.hadoop.yarn.proto.YarnServerNodemanagerServiceProtos.LocalizerStatusProto;
30 import org.apache.hadoop.yarn.server.nodemanager.api.LocalizationProtocol;
31 import org.apache.hadoop.yarn.server.nodemanager.api.LocalizationProtocolPB;
32 import org.apache.hadoop.yarn.server.nodemanager.api.protocolrecords.LocalizerHeartbeatResponse;
33 import org.apache.hadoop.yarn.server.nodemanager.api.protocolrecords.LocalizerStatus;
34 import org.apache.hadoop.yarn.server.nodemanager.api.protocolrecords.impl.pb.LocalizerHeartbeatResponsePBImpl;
35 import org.apache.hadoop.yarn.server.nodemanager.api.protocolrecords.impl.pb.LocalizerStatusPBImpl;
36 
37 import com.google.protobuf.ServiceException;
38 
39 public class LocalizationProtocolPBClientImpl implements LocalizationProtocol,
40     Closeable {
41 
42   private LocalizationProtocolPB proxy;
43 
LocalizationProtocolPBClientImpl(long clientVersion, InetSocketAddress addr, Configuration conf)44   public LocalizationProtocolPBClientImpl(long clientVersion, InetSocketAddress addr, Configuration conf) throws IOException {
45     RPC.setProtocolEngine(conf, LocalizationProtocolPB.class, ProtobufRpcEngine.class);
46     proxy = (LocalizationProtocolPB)RPC.getProxy(
47         LocalizationProtocolPB.class, clientVersion, addr, conf);
48   }
49 
50   @Override
close()51   public void close() {
52     if (this.proxy != null) {
53       RPC.stopProxy(this.proxy);
54     }
55   }
56 
57   @Override
heartbeat(LocalizerStatus status)58   public LocalizerHeartbeatResponse heartbeat(LocalizerStatus status)
59     throws YarnException, IOException {
60     LocalizerStatusProto statusProto = ((LocalizerStatusPBImpl)status).getProto();
61     try {
62       return new LocalizerHeartbeatResponsePBImpl(
63           proxy.heartbeat(null, statusProto));
64     } catch (ServiceException e) {
65       RPCUtil.unwrapAndThrowException(e);
66       return null;
67     }
68   }
69 
70 }
71