/**
* 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.MiniAvatarCluster;
import org.apache.hadoop.hdfs.MiniDFSCluster;
import org.apache.hadoop.conf.Configuration;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.Assert;
/**
* Class for testing {@link DataNodeMXBean} implementation
*/
public class TestAvatarDataNodeMXBean {
private void checkMXBean(DataNodeMXBean datanode) throws Exception {
MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
ObjectName mxbeanName = new ObjectName(
"hadoop:service=DataNode,name=DataNodeInfo");
// get attribute "ClusterId"
String serviceIds = (String) mbs.getAttribute(mxbeanName, "ServiceIds");
Assert.assertEquals(datanode.getServiceIds(), serviceIds);
// 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));
}
@Test
public void testAvatarDataNode() throws Exception {
MiniAvatarCluster.createAndStartZooKeeper();
Configuration conf = new Configuration();
// populate repl queues on standby (in safe mode)
conf.setFloat("dfs.namenode.replqueue.threshold-pct", 0f);
conf.setLong("fs.avatar.standbyfs.initinterval", 1000);
conf.setLong("fs.avatar.standbyfs.checkinterval", 1000);
MiniAvatarCluster cluster = new MiniAvatarCluster(conf, 1, true, null, null, 2, true);
try {
List<AvatarDataNode> datanodes = cluster.getDataNodes();
Assert.assertEquals(datanodes.size(), 1);
checkMXBean(datanodes.get(0));
} finally {
if (cluster != null) {
cluster.shutDown();
}
MiniAvatarCluster.shutDownZooKeeper();
}
}
@Test
public void testDataNode() throws Exception {
Configuration conf = new Configuration();
MiniDFSCluster cluster = new MiniDFSCluster(0, conf, 1, true, null, 2);
try {
List<DataNode> datanodes = cluster.getDataNodes();
Assert.assertEquals(datanodes.size(), 1);
checkMXBean(datanodes.get(0));
} finally {
if (cluster != null) {cluster.shutdown();}
}
}
private static String replaceDigits(final String s) {
return s.replaceAll("[0-9]+", "_DIGITS_");
}
}