org.apache.hadoop.hbase.regionserver.TestRegionServerHostname.java Source code

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Here is the source code for org.apache.hadoop.hbase.regionserver.TestRegionServerHostname.java

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/**
 * 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.hbase.regionserver;

import static org.junit.Assert.assertTrue;

import java.io.IOException;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.UnknownHostException;
import java.util.Enumeration;
import java.util.List;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.CoordinatedStateManager;
import org.apache.hadoop.hbase.HBaseTestingUtility;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.MiniHBaseCluster.MiniHBaseClusterRegionServer;
import org.apache.hadoop.hbase.protobuf.generated.RegionServerStatusProtos.RegionServerStartupResponse;
import org.apache.hadoop.hbase.testclassification.MediumTests;
import org.apache.hadoop.hbase.testclassification.RegionServerTests;
import org.apache.hadoop.hbase.util.JVMClusterUtil.RegionServerThread;
import org.apache.hadoop.hbase.util.Threads;
import org.apache.hadoop.hbase.zookeeper.ZKUtil;
import org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher;
import org.junit.Test;
import org.junit.experimental.categories.Category;

/**
 * Tests for the hostname specification by region server
 */
@Category({ RegionServerTests.class, MediumTests.class })
public class TestRegionServerHostname {
    private static final Log LOG = LogFactory.getLog(TestRegionServerHostname.class);
    private static final HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();

    @Test(timeout = 30000)
    public void testInvalidRegionServerHostnameAbortsServer() throws Exception {
        final int NUM_MASTERS = 1;
        final int NUM_RS = 1;
        String invalidHostname = "hostAddr.invalid";
        TEST_UTIL.getConfiguration().set(HRegionServer.RS_HOSTNAME_KEY, invalidHostname);
        try {
            TEST_UTIL.startMiniCluster(NUM_MASTERS, NUM_RS);
        } catch (IOException ioe) {
            Throwable t1 = ioe.getCause();
            Throwable t2 = t1.getCause();
            assertTrue(t1.getMessage() + " - " + t2.getMessage(),
                    t2.getMessage().contains("Failed resolve of " + invalidHostname)
                            || t2.getMessage().contains("Problem binding to " + invalidHostname));
            return;
        } finally {
            TEST_UTIL.shutdownMiniCluster();
        }
        assertTrue("Failed to validate against invalid hostname", false);
    }

    @Test(timeout = 120000)
    public void testRegionServerHostname() throws Exception {
        final int NUM_MASTERS = 1;
        final int NUM_RS = 1;
        Enumeration<NetworkInterface> netInterfaceList = NetworkInterface.getNetworkInterfaces();

        while (netInterfaceList.hasMoreElements()) {
            NetworkInterface ni = netInterfaceList.nextElement();
            Enumeration<InetAddress> addrList = ni.getInetAddresses();
            // iterate through host addresses and use each as hostname
            while (addrList.hasMoreElements()) {
                InetAddress addr = addrList.nextElement();
                if (addr.isLoopbackAddress() || addr.isLinkLocalAddress() || addr.isMulticastAddress()) {
                    continue;
                }
                String hostName = addr.getHostName();
                LOG.info("Found " + hostName + " on " + ni);

                TEST_UTIL.getConfiguration().set(HRegionServer.MASTER_HOSTNAME_KEY, hostName);
                TEST_UTIL.getConfiguration().set(HRegionServer.RS_HOSTNAME_KEY, hostName);
                TEST_UTIL.startMiniCluster(NUM_MASTERS, NUM_RS);
                try {
                    ZooKeeperWatcher zkw = TEST_UTIL.getZooKeeperWatcher();
                    List<String> servers = ZKUtil.listChildrenNoWatch(zkw, zkw.rsZNode);
                    // there would be NUM_RS+1 children - one for the master
                    assertTrue(servers.size() == NUM_RS + 1);
                    for (String server : servers) {
                        assertTrue("From zookeeper: " + server + " hostname: " + hostName,
                                server.startsWith(hostName.toLowerCase() + ","));
                    }
                    zkw.close();
                } finally {
                    TEST_UTIL.shutdownMiniCluster();
                }
            }
        }
    }
}