/**
* 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.bugs;
import java.util.LinkedList;
import java.util.List;
import java.util.Properties;
import java.util.Random;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import javax.jms.Connection;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.MessageConsumer;
import javax.jms.Session;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import org.apache.activemq.ActiveMQConnectionFactory;
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 static junit.framework.TestCase.assertTrue;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
public class AMQ3529v2Test {
private static Logger LOG = LoggerFactory.getLogger(AMQ3529v2Test.class);
private BrokerService broker;
private String connectionUri;
@Before
public void startBroker() throws Exception {
broker = new BrokerService();
broker.setDeleteAllMessagesOnStartup(true);
broker.setPersistent(false);
broker.setUseJmx(false);
broker.addConnector("tcp://0.0.0.0:0");
broker.start();
broker.waitUntilStarted();
connectionUri = broker.getTransportConnectors().get(0).getPublishableConnectString();
}
@After
public void stopBroker() throws Exception {
broker.stop();
broker.waitUntilStopped();
}
@Test(timeout = 60000)
public void testRandomInterruptionAffects() throws Exception {
doTestRandomInterruptionAffects();
}
@Test(timeout = 60000)
public void testRandomInterruptionAffectsWithFailover() throws Exception {
connectionUri = "failover:(" + connectionUri + ")";
doTestRandomInterruptionAffects();
}
public void doTestRandomInterruptionAffects() throws Exception {
final ActiveMQConnectionFactory connectionFactory = new ActiveMQConnectionFactory(connectionUri);
ThreadGroup tg = new ThreadGroup("tg");
assertEquals(0, tg.activeCount());
class ClientThread extends Thread {
public Exception error;
public ClientThread(ThreadGroup tg, String name) {
super(tg, name);
}
@Override
public void run() {
Context ctx = null;
Connection connection = null;
Session session = null;
MessageConsumer consumer = null;
try {
connection = connectionFactory.createConnection();
session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
assertNotNull(session);
Properties props = new Properties();
props.setProperty(Context.INITIAL_CONTEXT_FACTORY, "org.apache.activemq.jndi.ActiveMQInitialContextFactory");
props.setProperty(Context.PROVIDER_URL, connectionUri);
ctx = null;
try {
ctx = new InitialContext(props);
} catch (NoClassDefFoundError e) {
throw new NamingException(e.toString());
} catch (Exception e) {
throw new NamingException(e.toString());
}
Destination destination = (Destination) ctx.lookup("dynamicTopics/example.C");
consumer = session.createConsumer(destination);
consumer.receive(10000);
} catch (Exception e) {
// Expect an exception here from the interrupt.
} finally {
try {
if (consumer != null) {
consumer.close();
}
} catch (JMSException e) {
trackException("Consumer Close failed with", e);
}
try {
if (session != null) {
session.close();
}
} catch (JMSException e) {
trackException("Session Close failed with", e);
}
try {
if (connection != null) {
connection.close();
}
} catch (JMSException e) {
trackException("Connection Close failed with", e);
}
try {
if (ctx != null) {
ctx.close();
}
} catch (Exception e) {
trackException("Connection Close failed with", e);
}
}
}
private void trackException(String s, Exception e) {
LOG.error(s, e);
this.error = e;
}
}
final Random random = new Random();
List<ClientThread> threads = new LinkedList<ClientThread>();
for (int i=0;i<10;i++) {
threads.add(new ClientThread(tg, "Client-"+ i));
}
for (Thread thread : threads) {
thread.start();
}
// interrupt the threads at some random time
ExecutorService doTheInterrupts = Executors.newFixedThreadPool(threads.size());
for (final Thread thread : threads) {
doTheInterrupts.execute(new Runnable() {
@Override
public void run() {
try {
Thread.sleep(random.nextInt(5000));
} catch (InterruptedException ignored) {
ignored.printStackTrace();
}
thread.interrupt();
}
});
}
doTheInterrupts.shutdown();
assertTrue("all interrupts done", doTheInterrupts.awaitTermination(30, TimeUnit.SECONDS));
for (Thread thread : threads) {
thread.join();
}
for (ClientThread thread : threads) {
if (thread.error != null) {
LOG.info("Close error on thread: " + thread, thread.error);
}
}
Thread[] remainThreads = new Thread[tg.activeCount()];
tg.enumerate(remainThreads);
for (final Thread t : remainThreads) {
if (t != null && t.isAlive() && !t.isDaemon())
assertTrue("Thread completes:" + t, Wait.waitFor(new Wait.Condition() {
@Override
public boolean isSatisified() throws Exception {
LOG.info("Remaining thread: " + t.toString());
return !t.isAlive();
}
}));
}
ThreadGroup root = Thread.currentThread().getThreadGroup().getParent();
while (root.getParent() != null) {
root = root.getParent();
}
visit(root, 0);
}
// This method recursively visits all thread groups under `group'.
public static void visit(ThreadGroup group, int level) {
// Get threads in `group'
int numThreads = group.activeCount();
Thread[] threads = new Thread[numThreads * 2];
numThreads = group.enumerate(threads, false);
// Enumerate each thread in `group'
for (int i = 0; i < numThreads; i++) {
// Get thread
Thread thread = threads[i];
LOG.debug("Thread:" + thread.getName() + " is still running");
}
// Get thread subgroups of `group'
int numGroups = group.activeGroupCount();
ThreadGroup[] groups = new ThreadGroup[numGroups * 2];
numGroups = group.enumerate(groups, false);
// Recursively visit each subgroup
for (int i = 0; i < numGroups; i++) {
visit(groups[i], level + 1);
}
}
}