| /** |
| * 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.test.system; |
| |
| import java.io.IOException; |
| import java.net.InetSocketAddress; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hdfs.DFSConfigKeys; |
| import org.apache.hadoop.ipc.RPC; |
| import org.apache.hadoop.net.NetUtils; |
| import org.apache.hadoop.test.system.process.RemoteProcess; |
| |
| /** |
| * Datanode client for system tests. Assumption of the class is that the |
| * configuration key is set for the configuration key : {@code |
| * DFSConfigKeys.DFS_DATANODE_IPC_ADDRESS_KEY} is set, only the port portion of |
| * the address is used. |
| */ |
| public class DNClient extends HDFSDaemonClient<DNProtocol> { |
| |
| DNProtocol proxy; |
| private static final String HADOOP_DATANODE_OPTS_ENV = "HADOOP_DATANODE_OPTS"; |
| |
| public DNClient(Configuration conf, RemoteProcess process) throws IOException { |
| super(conf, process); |
| } |
| |
| @Override |
| public void connect() throws IOException { |
| if (isConnected()) { |
| return; |
| } |
| String sockAddrStr = getConf().get(DFSConfigKeys.DFS_DATANODE_IPC_ADDRESS_KEY); |
| if (sockAddrStr == null) { |
| throw new IllegalArgumentException("Datenode IPC address is not set." |
| + "Check if " + DFSConfigKeys.DFS_DATANODE_IPC_ADDRESS_KEY |
| + " is configured."); |
| } |
| String[] splits = sockAddrStr.split(":"); |
| if (splits.length != 2) { |
| throw new IllegalArgumentException( |
| "Datanode IPC address is not correctly configured"); |
| } |
| String port = splits[1]; |
| String sockAddr = getHostName() + ":" + port; |
| InetSocketAddress bindAddr = NetUtils.createSocketAddr(sockAddr); |
| proxy = (DNProtocol) RPC.getProxy(DNProtocol.class, DNProtocol.versionID, |
| bindAddr, getConf()); |
| setConnected(true); |
| } |
| |
| @Override |
| public void disconnect() throws IOException { |
| RPC.stopProxy(proxy); |
| setConnected(false); |
| } |
| |
| @Override |
| protected DNProtocol getProxy() { |
| return proxy; |
| } |
| |
| public Configuration getDatanodeConfig() throws IOException { |
| return getProxy().getDaemonConf(); |
| } |
| |
| @Override |
| public String getHadoopOptsEnvName() { |
| return HADOOP_DATANODE_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("DataNode", "DataNodeInfo", attributeName); |
| } |
| } |