| /** |
| * 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.test.system; |
| |
| import java.io.IOException; |
| import java.net.InetSocketAddress; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.ipc.RPC; |
| import org.apache.hadoop.mapred.JobTracker; |
| import org.apache.hadoop.mapred.TaskTrackerStatus; |
| import org.apache.hadoop.mapreduce.server.tasktracker.TTConfig; |
| import org.apache.hadoop.net.NetUtils; |
| import org.apache.hadoop.test.system.process.RemoteProcess; |
| |
| /** |
| * TaskTracker client for system tests. Assumption of the class is that the |
| * configuration key is set for the configuration key : {@code |
| * TTConfig.TT_REPORT_ADDRESS}is set, only the port portion of the |
| * address is used. |
| */ |
| public class TTClient extends MRDaemonClient<TTProtocol> { |
| |
| TTProtocol proxy; |
| private static final String SYSTEM_TEST_FILE = "system-test.xml"; |
| private static final String HADOOP_TT_OPTS_ENV = "HADOOP_TASKTRACKER_OPTS"; |
| |
| public TTClient(Configuration conf, RemoteProcess daemon) |
| throws IOException { |
| super(conf, daemon); |
| } |
| |
| @Override |
| public synchronized void connect() throws IOException { |
| if (isConnected()) { |
| return; |
| } |
| String sockAddrStr = getConf().get(TTConfig.TT_REPORT_ADDRESS); |
| if (sockAddrStr == null) { |
| throw new IllegalArgumentException( |
| "TaskTracker report address is not set"); |
| } |
| String[] splits = sockAddrStr.split(":"); |
| if (splits.length != 2) { |
| throw new IllegalArgumentException(TTConfig.TT_REPORT_ADDRESS |
| + " is not correctly configured or " |
| + SYSTEM_TEST_FILE + " hasn't been found."); |
| } |
| String port = splits[1]; |
| String sockAddr = getHostName() + ":" + port; |
| InetSocketAddress bindAddr = NetUtils.createSocketAddr(sockAddr); |
| proxy = (TTProtocol) RPC.getProxy(TTProtocol.class, TTProtocol.versionID, |
| bindAddr, getConf()); |
| setConnected(true); |
| } |
| |
| @Override |
| public synchronized void disconnect() throws IOException { |
| RPC.stopProxy(proxy); |
| } |
| |
| @Override |
| public synchronized TTProtocol getProxy() { |
| return proxy; |
| } |
| |
| /** |
| * Gets the last sent status to the {@link JobTracker}. <br/> |
| * |
| * @return the task tracker status. |
| * @throws IOException |
| */ |
| public TaskTrackerStatus getStatus() throws IOException { |
| return getProxy().getStatus(); |
| } |
| |
| @Override |
| public String getHadoopOptsEnvName() { |
| return HADOOP_TT_OPTS_ENV; |
| } |
| |
| /** |
| * Concrete implementation of abstract super class method |
| * |
| * @param attributeName name of the attribute to be retrieved |
| * @return Object value of the given attribute |
| * @throws IOException is thrown in case of communication errors |
| */ |
| @Override |
| public Object getDaemonAttribute(String attributeName) throws IOException { |
| return getJmxAttribute("TaskTracker", "TaskTrackerInfo", attributeName); |
| } |
| } |