hadoop DatanodeLifelineProtocolServerSideTranslatorPB 源码
haddop DatanodeLifelineProtocolServerSideTranslatorPB 代码
文件路径：/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocolPB/DatanodeLifelineProtocolServerSideTranslatorPB.java
/**
* 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.hadoop.hdfs.protocolPB;
import java.io.IOException;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos.HeartbeatRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.DatanodeLifelineProtocolProtos.LifelineResponseProto;
import org.apache.hadoop.hdfs.server.protocol.DatanodeLifelineProtocol;
import org.apache.hadoop.hdfs.server.protocol.StorageReport;
import org.apache.hadoop.hdfs.server.protocol.VolumeFailureSummary;
import org.apache.hadoop.thirdparty.protobuf.RpcController;
import org.apache.hadoop.thirdparty.protobuf.ServiceException;
/**
* Implementation for protobuf service that forwards requests
* received on {@link DatanodeLifelineProtocolPB} to the
* {@link DatanodeLifelineProtocol} server implementation.
*/
@InterfaceAudience.Private
public class DatanodeLifelineProtocolServerSideTranslatorPB implements
DatanodeLifelineProtocolPB {
private static final LifelineResponseProto VOID_LIFELINE_RESPONSE_PROTO =
LifelineResponseProto.newBuilder().build();
private final DatanodeLifelineProtocol impl;
public DatanodeLifelineProtocolServerSideTranslatorPB(
DatanodeLifelineProtocol impl) {
this.impl = impl;
}
@Override
public LifelineResponseProto sendLifeline(RpcController controller,
HeartbeatRequestProto request) throws ServiceException {
try {
final StorageReport[] report = PBHelperClient.convertStorageReports(
request.getReportsList());
VolumeFailureSummary volumeFailureSummary =
request.hasVolumeFailureSummary() ?
PBHelper.convertVolumeFailureSummary(
request.getVolumeFailureSummary()) : null;
impl.sendLifeline(PBHelper.convert(request.getRegistration()), report,
request.getCacheCapacity(), request.getCacheUsed(),
request.getXmitsInProgress(), request.getXceiverCount(),
request.getFailedVolumes(), volumeFailureSummary);
return VOID_LIFELINE_RESPONSE_PROTO;
} catch (IOException e) {
throw new ServiceException(e);
}
}
}
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