| /** |
| * 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.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.classification.InterfaceAudience; |
| import org.apache.hadoop.classification.InterfaceStability; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.CommonConfigurationKeysPublic; |
| import org.apache.hadoop.hdfs.protocol.BlockLocalPathInfo; |
| import org.apache.hadoop.hdfs.protocol.ClientDatanodeProtocol; |
| import org.apache.hadoop.hdfs.protocol.DatanodeID; |
| import org.apache.hadoop.hdfs.protocol.ExtendedBlock; |
| import org.apache.hadoop.hdfs.protocol.LocatedBlock; |
| import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.DeleteBlockPoolRequestProto; |
| import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoRequestProto; |
| import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto; |
| import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthRequestProto; |
| import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesRequestProto; |
| import org.apache.hadoop.hdfs.protocolR23Compatible.ProtocolSignatureWritable; |
| import org.apache.hadoop.hdfs.security.token.block.BlockTokenIdentifier; |
| 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.net.NetUtils; |
| import org.apache.hadoop.security.UserGroupInformation; |
| import org.apache.hadoop.security.token.Token; |
| |
| import com.google.protobuf.RpcController; |
| import com.google.protobuf.ServiceException; |
| |
| /** |
| * This class is the client side translator to translate the requests made on |
| * {@link ClientDatanodeProtocol} interfaces to the RPC server implementing |
| * {@link ClientDatanodeProtocolPB}. |
| */ |
| @InterfaceAudience.Private |
| @InterfaceStability.Stable |
| public class ClientDatanodeProtocolTranslatorPB implements |
| ProtocolMetaInterface, ClientDatanodeProtocol, Closeable { |
| public static final Log LOG = LogFactory |
| .getLog(ClientDatanodeProtocolTranslatorPB.class); |
| |
| /** RpcController is not used and hence is set to null */ |
| private final static RpcController NULL_CONTROLLER = null; |
| private final ClientDatanodeProtocolPB rpcProxy; |
| private final static RefreshNamenodesRequestProto REFRESH_NAMENODES = |
| RefreshNamenodesRequestProto.newBuilder().build(); |
| |
| public ClientDatanodeProtocolTranslatorPB(DatanodeID datanodeid, |
| Configuration conf, int socketTimeout, LocatedBlock locatedBlock) |
| throws IOException { |
| rpcProxy = createClientDatanodeProtocolProxy( datanodeid, conf, |
| socketTimeout, locatedBlock); |
| } |
| |
| public ClientDatanodeProtocolTranslatorPB(InetSocketAddress addr, |
| UserGroupInformation ticket, Configuration conf, SocketFactory factory) |
| throws IOException { |
| rpcProxy = createClientDatanodeProtocolProxy(addr, ticket, conf, factory, 0); |
| } |
| |
| /** |
| * Constructor. |
| * @param datanodeid Datanode to connect to. |
| * @param conf Configuration. |
| * @param socketTimeout Socket timeout to use. |
| * @throws IOException |
| */ |
| public ClientDatanodeProtocolTranslatorPB(DatanodeID datanodeid, |
| Configuration conf, int socketTimeout) throws IOException { |
| InetSocketAddress addr = NetUtils.createSocketAddr(datanodeid.getHost() |
| + ":" + datanodeid.getIpcPort()); |
| rpcProxy = createClientDatanodeProtocolProxy(addr, |
| UserGroupInformation.getCurrentUser(), conf, |
| NetUtils.getDefaultSocketFactory(conf), socketTimeout); |
| } |
| |
| static ClientDatanodeProtocolPB createClientDatanodeProtocolProxy( |
| DatanodeID datanodeid, Configuration conf, int socketTimeout, |
| LocatedBlock locatedBlock) throws IOException { |
| InetSocketAddress addr = NetUtils.createSocketAddr( |
| datanodeid.getHost() + ":" + datanodeid.getIpcPort()); |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("ClientDatanodeProtocol addr=" + addr); |
| } |
| |
| // Since we're creating a new UserGroupInformation here, we know that no |
| // future RPC proxies will be able to re-use the same connection. And |
| // usages of this proxy tend to be one-off calls. |
| // |
| // This is a temporary fix: callers should really achieve this by using |
| // RPC.stopProxy() on the resulting object, but this is currently not |
| // working in trunk. See the discussion on HDFS-1965. |
| Configuration confWithNoIpcIdle = new Configuration(conf); |
| confWithNoIpcIdle.setInt(CommonConfigurationKeysPublic |
| .IPC_CLIENT_CONNECTION_MAXIDLETIME_KEY, 0); |
| |
| UserGroupInformation ticket = UserGroupInformation |
| .createRemoteUser(locatedBlock.getBlock().getLocalBlock().toString()); |
| ticket.addToken(locatedBlock.getBlockToken()); |
| return createClientDatanodeProtocolProxy(addr, ticket, confWithNoIpcIdle, |
| NetUtils.getDefaultSocketFactory(conf), socketTimeout); |
| } |
| |
| static ClientDatanodeProtocolPB createClientDatanodeProtocolProxy( |
| InetSocketAddress addr, UserGroupInformation ticket, Configuration conf, |
| SocketFactory factory, int socketTimeout) throws IOException { |
| RPC.setProtocolEngine(conf, ClientDatanodeProtocolPB.class, |
| ProtobufRpcEngine.class); |
| return RPC.getProxy(ClientDatanodeProtocolPB.class, |
| RPC.getProtocolVersion(ClientDatanodeProtocolPB.class), addr, ticket, |
| 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 long getReplicaVisibleLength(ExtendedBlock b) throws IOException { |
| GetReplicaVisibleLengthRequestProto req = GetReplicaVisibleLengthRequestProto |
| .newBuilder().setBlock(PBHelper.convert(b)).build(); |
| try { |
| return rpcProxy.getReplicaVisibleLength(NULL_CONTROLLER, req).getLength(); |
| } catch (ServiceException e) { |
| throw ProtobufHelper.getRemoteException(e); |
| } |
| } |
| |
| @Override |
| public void refreshNamenodes() throws IOException { |
| try { |
| rpcProxy.refreshNamenodes(NULL_CONTROLLER, REFRESH_NAMENODES); |
| } catch (ServiceException e) { |
| throw ProtobufHelper.getRemoteException(e); |
| } |
| } |
| |
| @Override |
| public void deleteBlockPool(String bpid, boolean force) throws IOException { |
| DeleteBlockPoolRequestProto req = DeleteBlockPoolRequestProto.newBuilder() |
| .setBlockPool(bpid).setForce(force).build(); |
| try { |
| rpcProxy.deleteBlockPool(NULL_CONTROLLER, req); |
| } catch (ServiceException e) { |
| throw ProtobufHelper.getRemoteException(e); |
| } |
| } |
| |
| @Override |
| public BlockLocalPathInfo getBlockLocalPathInfo(ExtendedBlock block, |
| Token<BlockTokenIdentifier> token) throws IOException { |
| GetBlockLocalPathInfoRequestProto req = |
| GetBlockLocalPathInfoRequestProto.newBuilder() |
| .setBlock(PBHelper.convert(block)) |
| .setToken(PBHelper.convert(token)).build(); |
| GetBlockLocalPathInfoResponseProto resp; |
| try { |
| resp = rpcProxy.getBlockLocalPathInfo(NULL_CONTROLLER, req); |
| } catch (ServiceException e) { |
| throw ProtobufHelper.getRemoteException(e); |
| } |
| return new BlockLocalPathInfo(PBHelper.convert(resp.getBlock()), |
| resp.getLocalPath(), resp.getLocalMetaPath()); |
| } |
| |
| @Override |
| public boolean isMethodSupported(String methodName) throws IOException { |
| return RpcClientUtil.isMethodSupported(rpcProxy, |
| ClientDatanodeProtocolPB.class, RpcKind.RPC_PROTOCOL_BUFFER, |
| RPC.getProtocolVersion(ClientDatanodeProtocolPB.class), methodName); |
| } |
| } |