| /** |
| * 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.server.federation.router; |
| |
| import java.io.Closeable; |
| import java.io.IOException; |
| import java.net.InetSocketAddress; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| import org.apache.hadoop.classification.InterfaceAudience.Private; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hdfs.protocolPB.RouterAdminProtocolPB; |
| import org.apache.hadoop.hdfs.protocolPB.RouterAdminProtocolTranslatorPB; |
| import org.apache.hadoop.hdfs.server.federation.resolver.MountTableManager; |
| import org.apache.hadoop.ipc.ProtobufRpcEngine; |
| import org.apache.hadoop.ipc.RPC; |
| import org.apache.hadoop.net.NetUtils; |
| import org.apache.hadoop.security.UserGroupInformation; |
| |
| /** |
| * Client to connect to the {@link Router} via the admin protocol. |
| */ |
| @Private |
| public class RouterClient implements Closeable { |
| |
| private final RouterAdminProtocolTranslatorPB proxy; |
| private final UserGroupInformation ugi; |
| |
| private static RouterAdminProtocolTranslatorPB createRouterProxy( |
| InetSocketAddress address, Configuration conf, UserGroupInformation ugi) |
| throws IOException { |
| |
| RPC.setProtocolEngine( |
| conf, RouterAdminProtocolPB.class, ProtobufRpcEngine.class); |
| |
| AtomicBoolean fallbackToSimpleAuth = new AtomicBoolean(false); |
| final long version = RPC.getProtocolVersion(RouterAdminProtocolPB.class); |
| RouterAdminProtocolPB proxy = RPC.getProtocolProxy( |
| RouterAdminProtocolPB.class, version, address, ugi, conf, |
| NetUtils.getDefaultSocketFactory(conf), |
| RPC.getRpcTimeout(conf), null, |
| fallbackToSimpleAuth).getProxy(); |
| |
| return new RouterAdminProtocolTranslatorPB(proxy); |
| } |
| |
| public RouterClient(InetSocketAddress address, Configuration conf) |
| throws IOException { |
| this.ugi = UserGroupInformation.getCurrentUser(); |
| this.proxy = createRouterProxy(address, conf, ugi); |
| } |
| |
| public MountTableManager getMountTableManager() { |
| return proxy; |
| } |
| |
| public RouterStateManager getRouterStateManager() { |
| return proxy; |
| } |
| |
| public NameserviceManager getNameserviceManager() { |
| return proxy; |
| } |
| |
| @Override |
| public synchronized void close() throws IOException { |
| RPC.stopProxy(proxy); |
| } |
| } |