| /** |
| * 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; |
| |
| import java.io.IOException; |
| import java.util.Collection; |
| import java.util.Map; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hdfs.test.system.DNClient; |
| import org.apache.hadoop.hdfs.test.system.HDFSCluster; |
| import org.apache.hadoop.hdfs.test.system.NNClient; |
| import org.junit.After; |
| import org.junit.Assert; |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.mortbay.util.ajax.JSON; |
| |
| public class TestHL040 { |
| private HDFSCluster cluster = null; |
| private static final Log LOG = LogFactory.getLog(TestHL040.class); |
| |
| public TestHL040() throws Exception { |
| } |
| |
| @Before |
| public void setupUp() throws Exception { |
| cluster = HDFSCluster.createCluster(new Configuration()); |
| cluster.setUp(); |
| } |
| |
| @After |
| public void tearDown() throws Exception { |
| cluster.tearDown(); |
| } |
| |
| @Test |
| public void testConnect() throws IOException { |
| LOG.info("Staring TestHL040: connecting to the HDFSCluster "); |
| LOG.info("================ Getting namenode info ================"); |
| NNClient dfsMaster = cluster.getNNClient(); |
| LOG.info("Process info of namenode " + dfsMaster.getHostName() + " is: " + |
| dfsMaster.getProcessInfo()); |
| LOG.info("================ Getting datanode info ================"); |
| Collection<DNClient> clients = cluster.getDNClients(); |
| for (DNClient dnC : clients) { |
| LOG.info("Process info of datanode " + dnC.getHostName() + " is: " + |
| dnC.getProcessInfo()); |
| Assert.assertNotNull("Datanode process info isn't suppose to be null", |
| dnC.getProcessInfo()); |
| LOG.info("Free space " + getFreeSpace(dnC)); |
| } |
| } |
| |
| private long getFreeSpace(DNClient dnC) throws IOException { |
| Object volObj = dnC.getDaemonAttribute("VolumeInfo"); |
| Assert.assertNotNull("Attribute value is expected to be not null", volObj); |
| LOG.debug("Got object: " + volObj); |
| Map volInfoMap = (Map) JSON.parse(volObj.toString()); |
| long totalFreeSpace = 0L; |
| for (Object key : volInfoMap.keySet()) { |
| Map attrMap = (Map) volInfoMap.get(key); |
| long freeSpace = (Long) attrMap.get("freeSpace"); |
| totalFreeSpace += freeSpace; |
| } |
| return totalFreeSpace; |
| } |
| } |