| /** |
| * 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.factory.providers; |
| |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.reflect.Method; |
| |
| import org.apache.hadoop.classification.InterfaceAudience; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.yarn.conf.YarnConfiguration; |
| import org.apache.hadoop.yarn.exceptions.YarnRuntimeException; |
| import org.apache.hadoop.yarn.factories.RpcClientFactory; |
| import org.apache.hadoop.yarn.factories.RpcServerFactory; |
| |
| /** |
| * A public static get() method must be present in the Client/Server Factory implementation. |
| */ |
| @InterfaceAudience.LimitedPrivate({ "MapReduce", "YARN" }) |
| public class RpcFactoryProvider { |
| |
| private RpcFactoryProvider() { |
| |
| } |
| |
| |
| public static RpcServerFactory getServerFactory(Configuration conf) { |
| if (conf == null) { |
| conf = new Configuration(); |
| } |
| String serverFactoryClassName = conf.get( |
| YarnConfiguration.IPC_SERVER_FACTORY_CLASS, |
| YarnConfiguration.DEFAULT_IPC_SERVER_FACTORY_CLASS); |
| return (RpcServerFactory) getFactoryClassInstance(serverFactoryClassName); |
| } |
| |
| public static RpcClientFactory getClientFactory(Configuration conf) { |
| String clientFactoryClassName = conf.get( |
| YarnConfiguration.IPC_CLIENT_FACTORY_CLASS, |
| YarnConfiguration.DEFAULT_IPC_CLIENT_FACTORY_CLASS); |
| return (RpcClientFactory) getFactoryClassInstance(clientFactoryClassName); |
| } |
| |
| private static Object getFactoryClassInstance(String factoryClassName) { |
| try { |
| Class<?> clazz = Class.forName(factoryClassName); |
| Method method = clazz.getMethod("get"); |
| method.setAccessible(true); |
| return method.invoke(null); |
| } catch (ClassNotFoundException | NoSuchMethodException | |
| InvocationTargetException | IllegalAccessException e) { |
| throw new YarnRuntimeException(e); |
| } |
| } |
| |
| } |