| /** |
| * 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 java.util.HashMap; |
| import java.util.Map; |
| import java.util.concurrent.TimeUnit; |
| |
| import org.apache.hadoop.classification.InterfaceAudience; |
| import org.apache.hadoop.classification.InterfaceStability; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hdfs.protocol.AlreadyBeingCreatedException; |
| import org.apache.hadoop.hdfs.protocol.DatanodeID; |
| import org.apache.hadoop.hdfs.protocol.ExtendedBlock; |
| import org.apache.hadoop.hdfs.protocol.HdfsConstants; |
| import org.apache.hadoop.hdfs.protocol.LocatedBlock; |
| import org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos.BlockReceivedAndDeletedRequestProto; |
| import org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos.BlockReportRequestProto; |
| import org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos.BlockReportResponseProto; |
| import org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos.CommitBlockSynchronizationRequestProto; |
| import org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos.DatanodeCommandProto; |
| import org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos.ErrorReportRequestProto; |
| import org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos.HeartbeatRequestProto; |
| import org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos.HeartbeatResponseProto; |
| import org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos.RegisterDatanodeRequestProto; |
| import org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos.RegisterDatanodeResponseProto; |
| import org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos.ReportBadBlocksRequestProto; |
| import org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos.StorageBlockReportProto; |
| import org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos.StorageReceivedDeletedBlocksProto; |
| import org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.VersionRequestProto; |
| import org.apache.hadoop.hdfs.server.namenode.NameNode; |
| import org.apache.hadoop.hdfs.server.protocol.DatanodeCommand; |
| import org.apache.hadoop.hdfs.server.protocol.DatanodeProtocol; |
| import org.apache.hadoop.hdfs.server.protocol.DatanodeRegistration; |
| import org.apache.hadoop.hdfs.server.protocol.HeartbeatResponse; |
| import org.apache.hadoop.hdfs.server.protocol.NamespaceInfo; |
| import org.apache.hadoop.hdfs.server.protocol.ReceivedDeletedBlockInfo; |
| import org.apache.hadoop.hdfs.server.protocol.StorageBlockReport; |
| import org.apache.hadoop.hdfs.server.protocol.StorageReceivedDeletedBlocks; |
| import org.apache.hadoop.hdfs.server.protocol.StorageReport; |
| import org.apache.hadoop.io.retry.RetryPolicies; |
| import org.apache.hadoop.io.retry.RetryPolicy; |
| import org.apache.hadoop.io.retry.RetryProxy; |
| import org.apache.hadoop.ipc.ProtobufHelper; |
| import org.apache.hadoop.ipc.ProtobufRpcEngine; |
| import org.apache.hadoop.ipc.ProtocolMetaInterface; |
| import org.apache.hadoop.ipc.RPC; |
| import org.apache.hadoop.ipc.RemoteException; |
| import org.apache.hadoop.ipc.RpcClientUtil; |
| import org.apache.hadoop.net.NetUtils; |
| 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 DatanodeProtocol} interfaces to the RPC server implementing |
| * {@link DatanodeProtocolPB}. |
| */ |
| @InterfaceAudience.Private |
| @InterfaceStability.Stable |
| public class DatanodeProtocolClientSideTranslatorPB implements |
| ProtocolMetaInterface, DatanodeProtocol, Closeable { |
| |
| /** RpcController is not used and hence is set to null */ |
| private final DatanodeProtocolPB rpcProxy; |
| private static final VersionRequestProto VOID_VERSION_REQUEST = |
| VersionRequestProto.newBuilder().build(); |
| private final static RpcController NULL_CONTROLLER = null; |
| |
| public DatanodeProtocolClientSideTranslatorPB(InetSocketAddress nameNodeAddr, |
| Configuration conf) throws IOException { |
| RPC.setProtocolEngine(conf, DatanodeProtocolPB.class, |
| ProtobufRpcEngine.class); |
| UserGroupInformation ugi = UserGroupInformation.getCurrentUser(); |
| rpcProxy = createNamenodeWithRetry(createNamenode(nameNodeAddr, conf, ugi)); |
| } |
| |
| private static DatanodeProtocolPB createNamenode( |
| InetSocketAddress nameNodeAddr, Configuration conf, |
| UserGroupInformation ugi) throws IOException { |
| return RPC.getProxy(DatanodeProtocolPB.class, |
| RPC.getProtocolVersion(DatanodeProtocolPB.class), nameNodeAddr, ugi, |
| conf, NetUtils.getSocketFactory(conf, DatanodeProtocolPB.class)); |
| } |
| |
| /** Create a {@link NameNode} proxy */ |
| static DatanodeProtocolPB createNamenodeWithRetry( |
| DatanodeProtocolPB rpcNamenode) { |
| RetryPolicy createPolicy = RetryPolicies |
| .retryUpToMaximumCountWithFixedSleep(5, |
| HdfsConstants.LEASE_SOFTLIMIT_PERIOD, TimeUnit.MILLISECONDS); |
| |
| Map<Class<? extends Exception>, RetryPolicy> remoteExceptionToPolicyMap = |
| new HashMap<Class<? extends Exception>, RetryPolicy>(); |
| remoteExceptionToPolicyMap.put(AlreadyBeingCreatedException.class, |
| createPolicy); |
| |
| Map<Class<? extends Exception>, RetryPolicy> exceptionToPolicyMap = |
| new HashMap<Class<? extends Exception>, RetryPolicy>(); |
| exceptionToPolicyMap.put(RemoteException.class, RetryPolicies |
| .retryByRemoteException(RetryPolicies.TRY_ONCE_THEN_FAIL, |
| remoteExceptionToPolicyMap)); |
| RetryPolicy methodPolicy = RetryPolicies.retryByException( |
| RetryPolicies.TRY_ONCE_THEN_FAIL, exceptionToPolicyMap); |
| Map<String, RetryPolicy> methodNameToPolicyMap = new HashMap<String, RetryPolicy>(); |
| |
| methodNameToPolicyMap.put("create", methodPolicy); |
| |
| return (DatanodeProtocolPB) RetryProxy.create(DatanodeProtocolPB.class, |
| rpcNamenode, methodNameToPolicyMap); |
| } |
| |
| @Override |
| public void close() throws IOException { |
| RPC.stopProxy(rpcProxy); |
| } |
| |
| @Override |
| public DatanodeRegistration registerDatanode(DatanodeRegistration registration |
| ) throws IOException { |
| RegisterDatanodeRequestProto.Builder builder = RegisterDatanodeRequestProto |
| .newBuilder().setRegistration(PBHelper.convert(registration)); |
| RegisterDatanodeResponseProto resp; |
| try { |
| resp = rpcProxy.registerDatanode(NULL_CONTROLLER, builder.build()); |
| } catch (ServiceException se) { |
| throw ProtobufHelper.getRemoteException(se); |
| } |
| return PBHelper.convert(resp.getRegistration()); |
| } |
| |
| @Override |
| public HeartbeatResponse sendHeartbeat(DatanodeRegistration registration, |
| StorageReport[] reports, int xmitsInProgress, int xceiverCount, |
| int failedVolumes) throws IOException { |
| HeartbeatRequestProto.Builder builder = HeartbeatRequestProto.newBuilder() |
| .setRegistration(PBHelper.convert(registration)) |
| .setXmitsInProgress(xmitsInProgress).setXceiverCount(xceiverCount) |
| .setFailedVolumes(failedVolumes); |
| for (StorageReport r : reports) { |
| builder.addReports(PBHelper.convert(r)); |
| } |
| |
| HeartbeatResponseProto resp; |
| try { |
| resp = rpcProxy.sendHeartbeat(NULL_CONTROLLER, builder.build()); |
| } catch (ServiceException se) { |
| throw ProtobufHelper.getRemoteException(se); |
| } |
| DatanodeCommand[] cmds = new DatanodeCommand[resp.getCmdsList().size()]; |
| int index = 0; |
| for (DatanodeCommandProto p : resp.getCmdsList()) { |
| cmds[index] = PBHelper.convert(p); |
| index++; |
| } |
| return new HeartbeatResponse(cmds, PBHelper.convert(resp.getHaStatus())); |
| } |
| |
| @Override |
| public DatanodeCommand blockReport(DatanodeRegistration registration, |
| String poolId, StorageBlockReport[] reports) throws IOException { |
| BlockReportRequestProto.Builder builder = BlockReportRequestProto |
| .newBuilder().setRegistration(PBHelper.convert(registration)) |
| .setBlockPoolId(poolId); |
| |
| for (StorageBlockReport r : reports) { |
| StorageBlockReportProto.Builder reportBuilder = StorageBlockReportProto |
| .newBuilder().setStorage(PBHelper.convert(r.getStorage())); |
| long[] blocks = r.getBlocks(); |
| for (int i = 0; i < blocks.length; i++) { |
| reportBuilder.addBlocks(blocks[i]); |
| } |
| builder.addReports(reportBuilder.build()); |
| } |
| BlockReportResponseProto resp; |
| try { |
| resp = rpcProxy.blockReport(NULL_CONTROLLER, builder.build()); |
| } catch (ServiceException se) { |
| throw ProtobufHelper.getRemoteException(se); |
| } |
| return resp.hasCmd() ? PBHelper.convert(resp.getCmd()) : null; |
| } |
| |
| @Override |
| public void blockReceivedAndDeleted(DatanodeRegistration registration, |
| String poolId, StorageReceivedDeletedBlocks[] receivedAndDeletedBlocks) |
| throws IOException { |
| BlockReceivedAndDeletedRequestProto.Builder builder = |
| BlockReceivedAndDeletedRequestProto.newBuilder() |
| .setRegistration(PBHelper.convert(registration)) |
| .setBlockPoolId(poolId); |
| for (StorageReceivedDeletedBlocks storageBlock : receivedAndDeletedBlocks) { |
| StorageReceivedDeletedBlocksProto.Builder repBuilder = |
| StorageReceivedDeletedBlocksProto.newBuilder(); |
| repBuilder.setStorageID(storageBlock.getStorageID()); |
| for (ReceivedDeletedBlockInfo rdBlock : storageBlock.getBlocks()) { |
| repBuilder.addBlocks(PBHelper.convert(rdBlock)); |
| } |
| builder.addBlocks(repBuilder.build()); |
| } |
| try { |
| rpcProxy.blockReceivedAndDeleted(NULL_CONTROLLER, builder.build()); |
| } catch (ServiceException se) { |
| throw ProtobufHelper.getRemoteException(se); |
| } |
| } |
| |
| @Override |
| public void errorReport(DatanodeRegistration registration, int errorCode, |
| String msg) throws IOException { |
| ErrorReportRequestProto req = ErrorReportRequestProto.newBuilder() |
| .setRegistartion(PBHelper.convert(registration)) |
| .setErrorCode(errorCode).setMsg(msg).build(); |
| try { |
| rpcProxy.errorReport(NULL_CONTROLLER, req); |
| } catch (ServiceException se) { |
| throw ProtobufHelper.getRemoteException(se); |
| } |
| } |
| |
| @Override |
| public NamespaceInfo versionRequest() throws IOException { |
| try { |
| return PBHelper.convert(rpcProxy.versionRequest(NULL_CONTROLLER, |
| VOID_VERSION_REQUEST).getInfo()); |
| } catch (ServiceException e) { |
| throw ProtobufHelper.getRemoteException(e); |
| } |
| } |
| |
| @Override |
| public void reportBadBlocks(LocatedBlock[] blocks) throws IOException { |
| ReportBadBlocksRequestProto.Builder builder = ReportBadBlocksRequestProto |
| .newBuilder(); |
| for (int i = 0; i < blocks.length; i++) { |
| builder.addBlocks(i, PBHelper.convert(blocks[i])); |
| } |
| ReportBadBlocksRequestProto req = builder.build(); |
| try { |
| rpcProxy.reportBadBlocks(NULL_CONTROLLER, req); |
| } catch (ServiceException se) { |
| throw ProtobufHelper.getRemoteException(se); |
| } |
| } |
| |
| @Override |
| public void commitBlockSynchronization(ExtendedBlock block, |
| long newgenerationstamp, long newlength, boolean closeFile, |
| boolean deleteblock, DatanodeID[] newtargets, String[] newtargetstorages |
| ) throws IOException { |
| CommitBlockSynchronizationRequestProto.Builder builder = |
| CommitBlockSynchronizationRequestProto.newBuilder() |
| .setBlock(PBHelper.convert(block)).setNewGenStamp(newgenerationstamp) |
| .setNewLength(newlength).setCloseFile(closeFile) |
| .setDeleteBlock(deleteblock); |
| for (int i = 0; i < newtargets.length; i++) { |
| builder.addNewTaragets(PBHelper.convert(newtargets[i])); |
| builder.addNewTargetStorages(newtargetstorages[i]); |
| } |
| CommitBlockSynchronizationRequestProto req = builder.build(); |
| try { |
| rpcProxy.commitBlockSynchronization(NULL_CONTROLLER, req); |
| } catch (ServiceException se) { |
| throw ProtobufHelper.getRemoteException(se); |
| } |
| } |
| |
| @Override // ProtocolMetaInterface |
| public boolean isMethodSupported(String methodName) |
| throws IOException { |
| return RpcClientUtil.isMethodSupported(rpcProxy, DatanodeProtocolPB.class, |
| RPC.RpcKind.RPC_PROTOCOL_BUFFER, |
| RPC.getProtocolVersion(DatanodeProtocolPB.class), methodName); |
| } |
| } |