org.apache.hadoop.hdfs.protocolPB.DatanodeLifelineProtocolClientSideTranslatorPB Maven / Gradle / Ivy
/**
* 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.Closeable;
import java.io.IOException;
import java.net.InetSocketAddress;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos.HeartbeatRequestProto;
import org.apache.hadoop.hdfs.server.protocol.DatanodeLifelineProtocol;
import org.apache.hadoop.hdfs.server.protocol.DatanodeRegistration;
import org.apache.hadoop.hdfs.server.protocol.StorageReport;
import org.apache.hadoop.hdfs.server.protocol.VolumeFailureSummary;
import org.apache.hadoop.ipc.ProtobufHelper;
import org.apache.hadoop.ipc.ProtobufRpcEngine2;
import org.apache.hadoop.ipc.ProtocolMetaInterface;
import org.apache.hadoop.ipc.RPC;
import org.apache.hadoop.ipc.RpcClientUtil;
import org.apache.hadoop.net.NetUtils;
import org.apache.hadoop.security.UserGroupInformation;
import org.apache.hadoop.thirdparty.protobuf.RpcController;
import org.apache.hadoop.thirdparty.protobuf.ServiceException;
/**
* This class is the client side translator to translate the requests made on
* {@link DatanodeLifelineProtocol} interfaces to the RPC server implementing
* {@link DatanodeLifelineProtocolPB}.
*/
@InterfaceAudience.Private
public class DatanodeLifelineProtocolClientSideTranslatorPB implements
ProtocolMetaInterface, DatanodeLifelineProtocol, Closeable {
/** RpcController is not used and hence is set to null. */
private static final RpcController NULL_CONTROLLER = null;
private final DatanodeLifelineProtocolPB rpcProxy;
public DatanodeLifelineProtocolClientSideTranslatorPB(
InetSocketAddress nameNodeAddr, Configuration conf) throws IOException {
RPC.setProtocolEngine(conf, DatanodeLifelineProtocolPB.class,
ProtobufRpcEngine2.class);
UserGroupInformation ugi = UserGroupInformation.getCurrentUser();
rpcProxy = createNamenode(nameNodeAddr, conf, ugi);
}
private static DatanodeLifelineProtocolPB createNamenode(
InetSocketAddress nameNodeAddr, Configuration conf,
UserGroupInformation ugi) throws IOException {
return RPC.getProxy(DatanodeLifelineProtocolPB.class,
RPC.getProtocolVersion(DatanodeLifelineProtocolPB.class), nameNodeAddr,
ugi, conf,
NetUtils.getSocketFactory(conf, DatanodeLifelineProtocolPB.class));
}
@Override
public void close() throws IOException {
RPC.stopProxy(rpcProxy);
}
@Override
public void sendLifeline(DatanodeRegistration registration,
StorageReport[] reports, long cacheCapacity, long cacheUsed,
int xmitsInProgress, int xceiverCount, int failedVolumes,
VolumeFailureSummary volumeFailureSummary) throws IOException {
HeartbeatRequestProto.Builder builder = HeartbeatRequestProto.newBuilder()
.setRegistration(PBHelper.convert(registration))
.setXmitsInProgress(xmitsInProgress).setXceiverCount(xceiverCount)
.setFailedVolumes(failedVolumes);
builder.addAllReports(PBHelperClient.convertStorageReports(reports));
if (cacheCapacity != 0) {
builder.setCacheCapacity(cacheCapacity);
}
if (cacheUsed != 0) {
builder.setCacheUsed(cacheUsed);
}
if (volumeFailureSummary != null) {
builder.setVolumeFailureSummary(PBHelper.convertVolumeFailureSummary(
volumeFailureSummary));
}
try {
rpcProxy.sendLifeline(NULL_CONTROLLER, builder.build());
} catch (ServiceException se) {
throw ProtobufHelper.getRemoteException(se);
}
}
@Override // ProtocolMetaInterface
public boolean isMethodSupported(String methodName)
throws IOException {
return RpcClientUtil.isMethodSupported(rpcProxy,
DatanodeLifelineProtocolPB.class, RPC.RpcKind.RPC_PROTOCOL_BUFFER,
RPC.getProtocolVersion(DatanodeLifelineProtocolPB.class), methodName);
}
}