| /** |
| * 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 javax.net.SocketFactory; |
| |
| import org.apache.hadoop.classification.InterfaceAudience; |
| import org.apache.hadoop.classification.InterfaceStability; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hdfs.protocol.ExtendedBlock; |
| import org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.BlockProto; |
| import org.apache.hadoop.hdfs.protocol.proto.InterDatanodeProtocolProtos.InitReplicaRecoveryRequestProto; |
| import org.apache.hadoop.hdfs.protocol.proto.InterDatanodeProtocolProtos.InitReplicaRecoveryResponseProto; |
| import org.apache.hadoop.hdfs.protocol.proto.InterDatanodeProtocolProtos.UpdateReplicaUnderRecoveryRequestProto; |
| import org.apache.hadoop.hdfs.protocolR23Compatible.ProtocolSignatureWritable; |
| import org.apache.hadoop.hdfs.server.protocol.BlockRecoveryCommand.RecoveringBlock; |
| import org.apache.hadoop.hdfs.server.protocol.InterDatanodeProtocol; |
| import org.apache.hadoop.hdfs.server.protocol.ReplicaRecoveryInfo; |
| import org.apache.hadoop.ipc.ProtobufHelper; |
| import org.apache.hadoop.ipc.ProtobufRpcEngine; |
| import org.apache.hadoop.ipc.ProtocolMetaInterface; |
| import org.apache.hadoop.ipc.ProtocolSignature; |
| import org.apache.hadoop.ipc.RPC; |
| import org.apache.hadoop.ipc.RpcClientUtil; |
| import org.apache.hadoop.ipc.RpcPayloadHeader.RpcKind; |
| import org.apache.hadoop.security.UserGroupInformation; |
| |
| import com.google.protobuf.RpcController; |
| import com.google.protobuf.ServiceException; |
| |
| /** |
| * This class is the client side translator to translate the requests made on |
| * {@link InterDatanodeProtocol} interfaces to the RPC server implementing |
| * {@link InterDatanodeProtocolPB}. |
| */ |
| @InterfaceAudience.Private |
| @InterfaceStability.Stable |
| public class InterDatanodeProtocolTranslatorPB implements |
| ProtocolMetaInterface, InterDatanodeProtocol, Closeable { |
| /** RpcController is not used and hence is set to null */ |
| private final static RpcController NULL_CONTROLLER = null; |
| final private InterDatanodeProtocolPB rpcProxy; |
| |
| public InterDatanodeProtocolTranslatorPB(InetSocketAddress addr, |
| UserGroupInformation ugi, Configuration conf, SocketFactory factory, |
| int socketTimeout) |
| throws IOException { |
| RPC.setProtocolEngine(conf, InterDatanodeProtocolPB.class, |
| ProtobufRpcEngine.class); |
| rpcProxy = RPC.getProxy(InterDatanodeProtocolPB.class, |
| RPC.getProtocolVersion(InterDatanodeProtocolPB.class), addr, ugi, conf, |
| factory, socketTimeout); |
| } |
| |
| @Override |
| public void close() { |
| RPC.stopProxy(rpcProxy); |
| } |
| |
| @Override |
| public long getProtocolVersion(String protocolName, long clientVersion) |
| throws IOException { |
| return rpcProxy.getProtocolVersion(protocolName, clientVersion); |
| } |
| |
| @Override |
| public ProtocolSignature getProtocolSignature(String protocol, |
| long clientVersion, int clientMethodsHash) throws IOException { |
| return ProtocolSignatureWritable.convert(rpcProxy.getProtocolSignature2( |
| protocol, clientVersion, clientMethodsHash)); |
| } |
| |
| @Override |
| public ReplicaRecoveryInfo initReplicaRecovery(RecoveringBlock rBlock) |
| throws IOException { |
| InitReplicaRecoveryRequestProto req = InitReplicaRecoveryRequestProto |
| .newBuilder().setBlock(PBHelper.convert(rBlock)).build(); |
| InitReplicaRecoveryResponseProto resp; |
| try { |
| resp = rpcProxy.initReplicaRecovery(NULL_CONTROLLER, req); |
| } catch (ServiceException e) { |
| throw ProtobufHelper.getRemoteException(e); |
| } |
| BlockProto b = resp.getBlock(); |
| return new ReplicaRecoveryInfo(b.getBlockId(), b.getNumBytes(), |
| b.getGenStamp(), PBHelper.convert(resp.getState())); |
| } |
| |
| @Override |
| public ExtendedBlock updateReplicaUnderRecovery(ExtendedBlock oldBlock, |
| long recoveryId, long newLength) throws IOException { |
| UpdateReplicaUnderRecoveryRequestProto req = |
| UpdateReplicaUnderRecoveryRequestProto.newBuilder() |
| .setBlock(PBHelper.convert(oldBlock)) |
| .setNewLength(newLength).setRecoveryId(recoveryId).build(); |
| try { |
| return PBHelper.convert(rpcProxy.updateReplicaUnderRecovery( |
| NULL_CONTROLLER, req).getBlock()); |
| } catch (ServiceException e) { |
| throw ProtobufHelper.getRemoteException(e); |
| } |
| } |
| |
| @Override |
| public boolean isMethodSupported(String methodName) throws IOException { |
| return RpcClientUtil.isMethodSupported(rpcProxy, |
| InterDatanodeProtocolPB.class, RpcKind.RPC_PROTOCOL_BUFFER, |
| RPC.getProtocolVersion(InterDatanodeProtocolPB.class), methodName); |
| } |
| } |