| /** |
| * 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.conf.Configuration; |
| import org.apache.hadoop.yarn.YarnException; |
| import org.apache.hadoop.yarn.conf.YarnConfiguration; |
| import org.apache.hadoop.yarn.factories.YarnRemoteExceptionFactory; |
| import org.apache.hadoop.yarn.factories.impl.pb.YarnRemoteExceptionFactoryPBImpl; |
| |
| public class YarnRemoteExceptionFactoryProvider { |
| |
| private YarnRemoteExceptionFactoryProvider() { |
| } |
| |
| public static YarnRemoteExceptionFactory getYarnRemoteExceptionFactory(Configuration conf) { |
| if (conf == null) { |
| conf = new Configuration(); |
| } |
| String recordFactoryClassName = conf.get(YarnConfiguration.IPC_EXCEPTION_FACTORY); |
| if (recordFactoryClassName == null) { |
| String serializer = conf.get(YarnConfiguration.IPC_SERIALIZER_TYPE, YarnConfiguration.DEFAULT_IPC_SERIALIZER_TYPE); |
| if (serializer.equals(YarnConfiguration.DEFAULT_IPC_SERIALIZER_TYPE)) { |
| return YarnRemoteExceptionFactoryPBImpl.get(); |
| } else { |
| throw new YarnException("Unknown serializer: [" + conf.get(YarnConfiguration.IPC_SERIALIZER_TYPE) + "]. Use keys: [" + YarnConfiguration.IPC_EXCEPTION_FACTORY + "] to specify Exception factory"); |
| } |
| } else { |
| return (YarnRemoteExceptionFactory) getFactoryClassInstance(recordFactoryClassName); |
| } |
| } |
| |
| private static Object getFactoryClassInstance(String factoryClassName) { |
| try { |
| Class<?> clazz = Class.forName(factoryClassName); |
| Method method = clazz.getMethod("get", null); |
| method.setAccessible(true); |
| return method.invoke(null, null); |
| } catch (ClassNotFoundException e) { |
| throw new YarnException(e); |
| } catch (NoSuchMethodException e) { |
| throw new YarnException(e); |
| } catch (InvocationTargetException e) { |
| throw new YarnException(e); |
| } catch (IllegalAccessException e) { |
| throw new YarnException(e); |
| } |
| } |
| } |