| /** |
| * 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.datanode; |
| |
| import java.lang.management.ManagementFactory; |
| import java.util.List; |
| |
| import javax.management.MBeanServer; |
| import javax.management.ObjectName; |
| |
| import org.apache.hadoop.hdfs.MiniDFSCluster; |
| import org.apache.hadoop.conf.Configuration; |
| import org.junit.Test; |
| import org.junit.Assert; |
| |
| /** |
| * Class for testing {@link DataNodeMXBean} implementation |
| */ |
| public class TestDataNodeMXBean { |
| @Test |
| public void testDataNodeMXBean() throws Exception { |
| Configuration conf = new Configuration(); |
| MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).build(); |
| |
| try { |
| List<DataNode> datanodes = cluster.getDataNodes(); |
| Assert.assertEquals(datanodes.size(), 1); |
| DataNode datanode = datanodes.get(0); |
| |
| MBeanServer mbs = ManagementFactory.getPlatformMBeanServer(); |
| ObjectName mxbeanName = new ObjectName("HadoopInfo:type=DataNodeInfo"); |
| // get attribute "ClusterId" |
| String clusterId = (String) mbs.getAttribute(mxbeanName, "ClusterId"); |
| Assert.assertEquals(datanode.getClusterId(), clusterId); |
| // get attribute "Version" |
| String version = (String)mbs.getAttribute(mxbeanName, "Version"); |
| Assert.assertEquals(datanode.getVersion(),version); |
| // get attribute "RpcPort" |
| String rpcPort = (String)mbs.getAttribute(mxbeanName, "RpcPort"); |
| Assert.assertEquals(datanode.getRpcPort(),rpcPort); |
| // get attribute "HttpPort" |
| String httpPort = (String)mbs.getAttribute(mxbeanName, "HttpPort"); |
| Assert.assertEquals(datanode.getHttpPort(),httpPort); |
| // get attribute "NamenodeAddresses" |
| String namenodeAddresses = (String)mbs.getAttribute(mxbeanName, |
| "NamenodeAddresses"); |
| Assert.assertEquals(datanode.getNamenodeAddresses(),namenodeAddresses); |
| // get attribute "getVolumeInfo" |
| String volumeInfo = (String)mbs.getAttribute(mxbeanName, "VolumeInfo"); |
| Assert.assertEquals(replaceDigits(datanode.getVolumeInfo()), |
| replaceDigits(volumeInfo)); |
| } finally { |
| if (cluster != null) {cluster.shutdown();} |
| } |
| } |
| |
| private static String replaceDigits(final String s) { |
| return s.replaceAll("[0-9]+", "_DIGITS_"); |
| } |
| } |