/*
* 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.artemis.tests.extras.byteman;
import java.util.concurrent.CountDownLatch;
import org.apache.activemq.artemis.api.core.TransportConfiguration;
import org.apache.activemq.artemis.core.config.Configuration;
import org.apache.activemq.artemis.core.server.ActiveMQServer;
import org.apache.activemq.artemis.tests.util.ActiveMQTestBase;
import org.apache.activemq.artemis.tests.util.ReplicatedBackupUtils;
import org.apache.activemq.artemis.tests.util.TransportConfigurationUtils;
import org.jboss.byteman.contrib.bmunit.BMRule;
import org.jboss.byteman.contrib.bmunit.BMRules;
import org.jboss.byteman.contrib.bmunit.BMUnitRunner;
import org.junit.Test;
import org.junit.runner.RunWith;
@RunWith(BMUnitRunner.class)
public class ReplicationBackupTest extends ActiveMQTestBase {
private static final CountDownLatch ruleFired = new CountDownLatch(1);
private ActiveMQServer backupServer;
private ActiveMQServer liveServer;
/*
* simple test to induce a potential race condition where the server's acceptors are active, but the server's
* state != STARTED
*/
@Test
@BMRules(
rules = {@BMRule(
name = "prevent backup annoucement",
targetClass = "org.apache.activemq.artemis.core.server.impl.SharedNothingLiveActivation",
targetMethod = "run",
targetLocation = "AT EXIT",
action = "org.apache.activemq.artemis.tests.extras.byteman.ReplicationBackupTest.breakIt();")})
public void testReplicatedBackupAnnouncement() throws Exception {
TransportConfiguration liveConnector = TransportConfigurationUtils.getNettyConnector(true, 0);
TransportConfiguration liveAcceptor = TransportConfigurationUtils.getNettyAcceptor(true, 0);
TransportConfiguration backupConnector = TransportConfigurationUtils.getNettyConnector(false, 0);
TransportConfiguration backupAcceptor = TransportConfigurationUtils.getNettyAcceptor(false, 0);
Configuration backupConfig = createDefaultInVMConfig().setBindingsDirectory(getBindingsDir(0, true)).setJournalDirectory(getJournalDir(0, true)).setPagingDirectory(getPageDir(0, true)).setLargeMessagesDirectory(getLargeMessagesDir(0, true));
Configuration liveConfig = createDefaultInVMConfig();
ReplicatedBackupUtils.configureReplicationPair(backupConfig, backupConnector, backupAcceptor, liveConfig, liveConnector, liveAcceptor);
liveServer = createServer(liveConfig);
// start the live server in a new thread so we can start the backup simultaneously to induce a potential race
Thread startThread = new Thread(new Runnable() {
@Override
public void run() {
try {
liveServer.start();
} catch (Exception e) {
e.printStackTrace();
}
}
});
startThread.start();
ruleFired.await();
backupServer = createServer(backupConfig);
backupServer.start();
ActiveMQTestBase.waitForRemoteBackup(null, 3, true, backupServer);
}
public static void breakIt() {
ruleFired.countDown();
try {
/* before the fix this sleep would put the "live" server into a state where the acceptors were started
* but the server's state != STARTED which would cause the backup to fail to announce
*/
Thread.sleep(2000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}