| /** |
| * 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.yarn.factories.impl.pb; |
| |
| import java.io.IOException; |
| import java.lang.reflect.Constructor; |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.reflect.Method; |
| import java.net.InetSocketAddress; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.concurrent.ConcurrentMap; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.ipc.ProtobufRpcEngine; |
| import org.apache.hadoop.ipc.Server; |
| import org.apache.hadoop.ipc.RPC; |
| import org.apache.hadoop.security.token.SecretManager; |
| import org.apache.hadoop.security.token.TokenIdentifier; |
| import org.apache.hadoop.yarn.YarnException; |
| import org.apache.hadoop.yarn.factories.RpcServerFactory; |
| |
| import com.google.protobuf.BlockingService; |
| |
| public class RpcServerFactoryPBImpl implements RpcServerFactory { |
| |
| private static final Log LOG = LogFactory.getLog(RpcServerFactoryPBImpl.class); |
| private static final String PROTO_GEN_PACKAGE_NAME = "org.apache.hadoop.yarn.proto"; |
| private static final String PROTO_GEN_CLASS_SUFFIX = "Service"; |
| private static final String PB_IMPL_PACKAGE_SUFFIX = "impl.pb.service"; |
| private static final String PB_IMPL_CLASS_SUFFIX = "PBServiceImpl"; |
| |
| private static final RpcServerFactoryPBImpl self = new RpcServerFactoryPBImpl(); |
| |
| private Configuration localConf = new Configuration(); |
| private ConcurrentMap<Class<?>, Constructor<?>> serviceCache = new ConcurrentHashMap<Class<?>, Constructor<?>>(); |
| private ConcurrentMap<Class<?>, Method> protoCache = new ConcurrentHashMap<Class<?>, Method>(); |
| |
| public static RpcServerFactoryPBImpl get() { |
| return RpcServerFactoryPBImpl.self; |
| } |
| |
| |
| private RpcServerFactoryPBImpl() { |
| } |
| |
| public Server getServer(Class<?> protocol, Object instance, |
| InetSocketAddress addr, Configuration conf, |
| SecretManager<? extends TokenIdentifier> secretManager, int numHandlers) |
| throws YarnException { |
| return getServer(protocol, instance, addr, conf, secretManager, numHandlers, |
| null); |
| } |
| |
| @Override |
| public Server getServer(Class<?> protocol, Object instance, |
| InetSocketAddress addr, Configuration conf, |
| SecretManager<? extends TokenIdentifier> secretManager, int numHandlers, |
| String portRangeConfig) |
| throws YarnException { |
| |
| Constructor<?> constructor = serviceCache.get(protocol); |
| if (constructor == null) { |
| Class<?> pbServiceImplClazz = null; |
| try { |
| pbServiceImplClazz = localConf |
| .getClassByName(getPbServiceImplClassName(protocol)); |
| } catch (ClassNotFoundException e) { |
| throw new YarnException("Failed to load class: [" |
| + getPbServiceImplClassName(protocol) + "]", e); |
| } |
| try { |
| constructor = pbServiceImplClazz.getConstructor(protocol); |
| constructor.setAccessible(true); |
| serviceCache.putIfAbsent(protocol, constructor); |
| } catch (NoSuchMethodException e) { |
| throw new YarnException("Could not find constructor with params: " |
| + Long.TYPE + ", " + InetSocketAddress.class + ", " |
| + Configuration.class, e); |
| } |
| } |
| |
| Object service = null; |
| try { |
| service = constructor.newInstance(instance); |
| } catch (InvocationTargetException e) { |
| throw new YarnException(e); |
| } catch (IllegalAccessException e) { |
| throw new YarnException(e); |
| } catch (InstantiationException e) { |
| throw new YarnException(e); |
| } |
| |
| Class<?> pbProtocol = service.getClass().getInterfaces()[0]; |
| Method method = protoCache.get(protocol); |
| if (method == null) { |
| Class<?> protoClazz = null; |
| try { |
| protoClazz = localConf.getClassByName(getProtoClassName(protocol)); |
| } catch (ClassNotFoundException e) { |
| throw new YarnException("Failed to load class: [" |
| + getProtoClassName(protocol) + "]", e); |
| } |
| try { |
| method = protoClazz.getMethod("newReflectiveBlockingService", |
| pbProtocol.getInterfaces()[0]); |
| method.setAccessible(true); |
| protoCache.putIfAbsent(protocol, method); |
| } catch (NoSuchMethodException e) { |
| throw new YarnException(e); |
| } |
| } |
| |
| try { |
| return createServer(pbProtocol, addr, conf, secretManager, numHandlers, |
| (BlockingService)method.invoke(null, service), portRangeConfig); |
| } catch (InvocationTargetException e) { |
| throw new YarnException(e); |
| } catch (IllegalAccessException e) { |
| throw new YarnException(e); |
| } catch (IOException e) { |
| throw new YarnException(e); |
| } |
| } |
| |
| private String getProtoClassName(Class<?> clazz) { |
| String srcClassName = getClassName(clazz); |
| return PROTO_GEN_PACKAGE_NAME + "." + srcClassName + "$" + srcClassName + PROTO_GEN_CLASS_SUFFIX; |
| } |
| |
| private String getPbServiceImplClassName(Class<?> clazz) { |
| String srcPackagePart = getPackageName(clazz); |
| String srcClassName = getClassName(clazz); |
| String destPackagePart = srcPackagePart + "." + PB_IMPL_PACKAGE_SUFFIX; |
| String destClassPart = srcClassName + PB_IMPL_CLASS_SUFFIX; |
| return destPackagePart + "." + destClassPart; |
| } |
| |
| private String getClassName(Class<?> clazz) { |
| String fqName = clazz.getName(); |
| return (fqName.substring(fqName.lastIndexOf(".") + 1, fqName.length())); |
| } |
| |
| private String getPackageName(Class<?> clazz) { |
| return clazz.getPackage().getName(); |
| } |
| |
| private Server createServer(Class<?> pbProtocol, InetSocketAddress addr, Configuration conf, |
| SecretManager<? extends TokenIdentifier> secretManager, int numHandlers, |
| BlockingService blockingService, String portRangeConfig) throws IOException { |
| RPC.setProtocolEngine(conf, pbProtocol, ProtobufRpcEngine.class); |
| RPC.Server server = RPC.getServer(pbProtocol, blockingService, |
| addr.getHostName(), addr.getPort(), numHandlers, false, conf, |
| secretManager, portRangeConfig); |
| LOG.info("Adding protocol "+pbProtocol.getCanonicalName()+" to the server"); |
| server.addProtocol(RPC.RpcKind.RPC_PROTOCOL_BUFFER, pbProtocol, blockingService); |
| return server; |
| } |
| } |