/**
* 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.transport.vm;
import java.net.URI;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;
import javax.jms.Connection;
import javax.jms.Session;
import junit.framework.TestCase;
import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.bugs.embedded.ThreadExplorer;
import org.apache.activemq.command.ActiveMQQueue;
import org.apache.activemq.command.ActiveMQTopic;
import org.apache.activemq.network.DurableConduitBridge;
import org.apache.activemq.network.NetworkConnector;
import org.apache.activemq.util.DefaultTestAppender;
import org.apache.activemq.util.Wait;
import org.apache.log4j.Level;
import org.apache.log4j.spi.LoggingEvent;
import org.junit.Ignore;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class VmTransportNetworkBrokerTest extends TestCase {
private static final Logger LOG = LoggerFactory.getLogger(VmTransportNetworkBrokerTest.class);
private static final String VM_BROKER_URI =
"vm://localhost?create=false";
public void testNoThreadLeak() throws Exception {
// with VMConnection and simple discovery network connector
Thread[] threads = filterDaemonThreads(ThreadExplorer.listThreads());
final int originalThreadCount = threads.length;
LOG.debug(ThreadExplorer.show("threads at beginning"));
BrokerService broker = new BrokerService();
broker.setDedicatedTaskRunner(true);
broker.setPersistent(false);
broker.addConnector("tcp://localhost:61616");
NetworkConnector networkConnector = broker.addNetworkConnector("static:(tcp://wrongHostname1:61617,tcp://wrongHostname2:61618)?useExponentialBackOff=false");
networkConnector.setDuplex(true);
broker.start();
ActiveMQConnectionFactory cf = new ActiveMQConnectionFactory(new URI(VM_BROKER_URI));
Connection connection = cf.createConnection("system", "manager");
connection.start();
// let it settle
TimeUnit.SECONDS.sleep(5);
int threadCountAfterStart = Thread.activeCount();
TimeUnit.SECONDS.sleep(20);
int threadCountAfterSleep = Thread.activeCount();
assertTrue("Threads are leaking: " + ThreadExplorer.show("active sleep") + ", threadCount=" +threadCountAfterStart + " threadCountAfterSleep=" + threadCountAfterSleep,
threadCountAfterSleep < 2 * threadCountAfterStart);
connection.close();
broker.stop();
broker.waitUntilStopped();
// testNoDanglingThreadsAfterStop with tcp transport
broker = new BrokerService();
broker.setSchedulerSupport(true);
broker.setDedicatedTaskRunner(true);
broker.setPersistent(false);
broker.addConnector("tcp://localhost:61616?wireFormat.maxInactivityDuration=1000&wireFormat.maxInactivityDurationInitalDelay=1000");
broker.start();
cf = new ActiveMQConnectionFactory("tcp://localhost:61616?wireFormat.maxInactivityDuration=1000&wireFormat.maxInactivityDurationInitalDelay=1000");
connection = cf.createConnection("system", "manager");
connection.start();
connection.close();
broker.stop();
broker.waitUntilStopped();
final AtomicInteger threadCountAfterStop = new AtomicInteger();
boolean ok = Wait.waitFor(new Wait.Condition() {
@Override
public boolean isSatisified() throws Exception {
LOG.info(ThreadExplorer.show("active after stop"));
// get final threads but filter out any daemon threads that the JVM may have created.
Thread[] threads = filterDaemonThreads(ThreadExplorer.listThreads());
threadCountAfterStop.set(threads.length);
return threadCountAfterStop.get() <= originalThreadCount;
}
});
LOG.info("originalThreadCount=" + originalThreadCount + " threadCountAfterStop=" + threadCountAfterStop);
assertTrue("Threads are leaking: " +
ThreadExplorer.show("active after stop") +
". originalThreadCount=" +
originalThreadCount +
" threadCountAfterStop=" +
threadCountAfterStop.get(),
ok);
}
public void testInvalidClientIdAndDurableSubs() throws Exception {
BrokerService broker = new BrokerService();
broker.setUseJmx(false);
broker.setDedicatedTaskRunner(true);
broker.setPersistent(false);
broker.addConnector("tcp://localhost:0");
broker.start();
// ensure remoteConnection fails with InvalidClientId
ActiveMQConnectionFactory connectionFactory = new ActiveMQConnectionFactory(broker.getTransportConnectors().get(0).getPublishableConnectString());
Connection connection = connectionFactory.createConnection("system", "manager");
connection.setClientID("F1_forwarder_outbound");
connection.start();
BrokerService forwarder = new BrokerService();
forwarder.setBrokerName("forwarder");
forwarder.setPersistent(false);
forwarder.setUseJmx(false);
forwarder.start();
// setup some durable subs to have some local work to do
ActiveMQConnectionFactory vmFactory = new ActiveMQConnectionFactory("vm://forwarder");
Connection vmConnection = vmFactory.createConnection("system", "manager");
vmConnection.setClientID("vm_local");
vmConnection.start();
Session session = vmConnection.createSession(false, Session.AUTO_ACKNOWLEDGE);
for (int i=0; i<5000; i++) {
session.createDurableSubscriber(new ActiveMQTopic("T" + i), "" + i);
}
vmConnection.close();
final AtomicInteger logCounts = new AtomicInteger(0);
DefaultTestAppender appender = new DefaultTestAppender() {
@Override
public void doAppend(LoggingEvent event) {
if (event.getLevel() == Level.ERROR) {
logCounts.incrementAndGet();
}
}
};
org.apache.log4j.Logger.getLogger(DurableConduitBridge.class).addAppender(appender);
try {
NetworkConnector networkConnector = forwarder.addNetworkConnector("static:("
+ broker.getTransportConnectors().get(0).getPublishableConnectString() + ")");
networkConnector.setName("F1");
forwarder.addNetworkConnector(networkConnector);
forwarder.startAllConnectors();
TimeUnit.SECONDS.sleep(1);
connection.close();
forwarder.stop();
broker.stop();
assertEquals("no errors", 0, logCounts.get());
} finally {
org.apache.log4j.Logger.getLogger(DurableConduitBridge.class).removeAppender(appender);
}
}
/**
* Filters any daemon threads from the thread list.
*
* Thread counts before and after the test should ideally be equal.
* However there is no guarantee that the JVM does not create any
* additional threads itself.
* E.g. on Mac OSX there is a JVM internal thread called
* "Poller SunPKCS11-Darwin" created after the test go started and
* under the main thread group.
* When debugging tests in Eclipse another so called "Reader" thread
* is created by Eclipse.
* So we cannot assume that the JVM does not create additional threads
* during the test. However for the time being we assume that any such
* additionally created threads are daemon threads.
*
* @param threads - the array of threads to parse
* @return a new array with any daemon threads removed
*/
public Thread[] filterDaemonThreads(Thread[] threads) throws Exception {
List<Thread> threadList = new ArrayList<Thread>(Arrays.asList(threads));
// Can't use an Iterator as it would raise a
// ConcurrentModificationException when trying to remove an element
// from the list, so using standard walk through
for (int i = 0 ; i < threadList.size(); i++) {
Thread thread = threadList.get(i);
LOG.debug("Inspecting thread " + thread.getName());
if (thread.isDaemon() && !thread.getName().contains("ActiveMQ")) {
LOG.debug("Removing deamon thread.");
threadList.remove(thread);
Thread.sleep(100);
}
}
LOG.debug("Converting list back to Array");
return threadList.toArray(new Thread[0]);
}
}