| /** |
| * 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.mapreduce.v2.hs; |
| |
| import java.io.IOException; |
| import java.net.InetSocketAddress; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.classification.InterfaceAudience.Private; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.ipc.ProtobufRpcEngine; |
| import org.apache.hadoop.ipc.RPC; |
| import org.apache.hadoop.mapreduce.v2.api.HSAdminRefreshProtocol; |
| import org.apache.hadoop.mapreduce.v2.api.HSAdminRefreshProtocolPB; |
| import org.apache.hadoop.mapreduce.v2.hs.protocolPB.HSAdminRefreshProtocolClientSideTranslatorPB; |
| import org.apache.hadoop.net.NetUtils; |
| import org.apache.hadoop.security.RefreshUserMappingsProtocol; |
| import org.apache.hadoop.security.UserGroupInformation; |
| import org.apache.hadoop.security.protocolPB.RefreshUserMappingsProtocolClientSideTranslatorPB; |
| import org.apache.hadoop.security.protocolPB.RefreshUserMappingsProtocolPB; |
| import org.apache.hadoop.tools.GetUserMappingsProtocol; |
| import org.apache.hadoop.tools.protocolPB.GetUserMappingsProtocolClientSideTranslatorPB; |
| import org.apache.hadoop.tools.protocolPB.GetUserMappingsProtocolPB; |
| |
| @Private |
| public class HSProxies { |
| |
| private static final Log LOG = LogFactory.getLog(HSProxies.class); |
| |
| @SuppressWarnings("unchecked") |
| public static <T> T createProxy(Configuration conf, InetSocketAddress hsaddr, |
| Class<T> xface, UserGroupInformation ugi) throws IOException { |
| |
| T proxy; |
| if (xface == RefreshUserMappingsProtocol.class) { |
| proxy = (T) createHSProxyWithRefreshUserMappingsProtocol(hsaddr, conf, |
| ugi); |
| } else if (xface == GetUserMappingsProtocol.class) { |
| proxy = (T) createHSProxyWithGetUserMappingsProtocol(hsaddr, conf, ugi); |
| } else if (xface == HSAdminRefreshProtocol.class) { |
| proxy = (T) createHSProxyWithHSAdminRefreshProtocol(hsaddr, conf, ugi); |
| } else { |
| String message = "Unsupported protocol found when creating the proxy " |
| + "connection to History server: " |
| + ((xface != null) ? xface.getClass().getName() : "null"); |
| LOG.error(message); |
| throw new IllegalStateException(message); |
| } |
| return proxy; |
| } |
| |
| private static RefreshUserMappingsProtocol createHSProxyWithRefreshUserMappingsProtocol( |
| InetSocketAddress address, Configuration conf, UserGroupInformation ugi) |
| throws IOException { |
| RefreshUserMappingsProtocolPB proxy = (RefreshUserMappingsProtocolPB) createHSProxy( |
| address, conf, ugi, RefreshUserMappingsProtocolPB.class, 0); |
| return new RefreshUserMappingsProtocolClientSideTranslatorPB(proxy); |
| } |
| |
| private static GetUserMappingsProtocol createHSProxyWithGetUserMappingsProtocol( |
| InetSocketAddress address, Configuration conf, UserGroupInformation ugi) |
| throws IOException { |
| GetUserMappingsProtocolPB proxy = (GetUserMappingsProtocolPB) createHSProxy( |
| address, conf, ugi, GetUserMappingsProtocolPB.class, 0); |
| return new GetUserMappingsProtocolClientSideTranslatorPB(proxy); |
| } |
| |
| private static HSAdminRefreshProtocol createHSProxyWithHSAdminRefreshProtocol( |
| InetSocketAddress hsaddr, Configuration conf, UserGroupInformation ugi) |
| throws IOException { |
| HSAdminRefreshProtocolPB proxy = (HSAdminRefreshProtocolPB) createHSProxy( |
| hsaddr, conf, ugi, HSAdminRefreshProtocolPB.class, 0); |
| return new HSAdminRefreshProtocolClientSideTranslatorPB(proxy); |
| } |
| |
| private static Object createHSProxy(InetSocketAddress address, |
| Configuration conf, UserGroupInformation ugi, Class<?> xface, |
| int rpcTimeout) throws IOException { |
| RPC.setProtocolEngine(conf, xface, ProtobufRpcEngine.class); |
| Object proxy = RPC.getProxy(xface, RPC.getProtocolVersion(xface), address, |
| ugi, conf, NetUtils.getDefaultSocketFactory(conf), rpcTimeout); |
| return proxy; |
| } |
| } |