/**
* 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.activemq.store.kahadb;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.util.Wait;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.File;
import java.io.RandomAccessFile;
import java.util.Date;
import java.util.concurrent.TimeUnit;
import static org.junit.Assert.assertTrue;
public class KahaDBDeleteLockTest {
static final Logger LOG = LoggerFactory.getLogger(KahaDBDeleteLockTest.class);
protected BrokerService master;
protected KahaDBPersistenceAdapter masterPersistenceAdapter = new KahaDBPersistenceAdapter();
private final File testDataDir = new File("target/activemq-data/KahaDBDeleteLockTest");
private final File kahaDataDir = new File(testDataDir, "kahadb");
@Before
public void createMaster() throws Exception{
master = new BrokerService();
master.setDeleteAllMessagesOnStartup(true);
master.setBrokerName("Master");
master.setDataDirectoryFile(testDataDir);
masterPersistenceAdapter.setDirectory(kahaDataDir);
masterPersistenceAdapter.setLockKeepAlivePeriod(500);
// ensure broker creates the file
File lockFile = new File(kahaDataDir, "lock");
if (lockFile.exists()) {
lockFile.delete();
}
master.setPersistenceAdapter(masterPersistenceAdapter);
master.start();
master.waitUntilStarted();
}
@After
public void stopBrokerJustInCase() throws Exception {
if (master != null) {
master.stop();
master.waitUntilStopped();
}
}
/**
* Deletes the lock file and makes sure that the broken stops.
* @throws Exception
*/
@Test
public void testLockFileDelete() throws Exception {
assertTrue(master.isStarted());
//Delete the lock file
File lockFile = new File(kahaDataDir, "lock");
if(lockFile.exists()) {
lockFile.delete();
}
assertTrue("Master stops on lock file delete", Wait.waitFor(new Wait.Condition() {
@Override
public boolean isSatisified() throws Exception {
return master.isStopped();
}
}));
}
/**
* Modifies the lock file so that the last modified date is not the same when the broker obtained the lock.
* This should force the broker to stop.
* @throws Exception
*/
@Test
public void testModifyLockFile() throws Exception {
assertTrue(master.isStarted());
final File lockFile = new File(kahaDataDir, "lock");
assertTrue("lock file exists via modification time", Wait.waitFor(new Wait.Condition() {
@Override
public boolean isSatisified() throws Exception {
LOG.info("Lock file " + lockFile.getAbsolutePath() + ", last mod at: " + new Date(lockFile.lastModified()));
return lockFile.lastModified() > 0;
}
}));
// ensure modification will be seen, second granularity on some nix
TimeUnit.SECONDS.sleep(2);
RandomAccessFile file = new RandomAccessFile(lockFile, "rw");
file.write(4);
file.getChannel().force(true);
file.close();
assertTrue("Master stops on lock file modification", Wait.waitFor(new Wait.Condition() {
@Override
public boolean isSatisified() throws Exception {
return master.isStopped();
}
}, 10000));
}
}