/**
* 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.failover;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicInteger;
import javax.jms.DeliveryMode;
import javax.jms.JMSException;
import javax.jms.MessageConsumer;
import javax.jms.MessageProducer;
import javax.jms.Session;
import junit.framework.TestCase;
import org.apache.activemq.ActiveMQConnection;
import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.broker.TransportConnector;
import org.apache.activemq.command.ActiveMQQueue;
import org.apache.activemq.transport.TransportListener;
import org.apache.activemq.transport.mock.MockTransport;
import org.apache.activemq.util.ServiceStopper;
import org.apache.activemq.util.Wait;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class ReconnectTest extends TestCase {
public static final int MESSAGES_PER_ITTERATION = 10;
public static final int WORKER_COUNT = 10;
private static final Logger LOG = LoggerFactory.getLogger(ReconnectTest.class);
private BrokerService bs;
private URI tcpUri;
private final AtomicInteger resumedCount = new AtomicInteger();
private final AtomicInteger interruptedCount = new AtomicInteger();
private Worker[] workers;
class Worker implements Runnable {
public AtomicInteger iterations = new AtomicInteger();
public CountDownLatch stopped = new CountDownLatch(1);
private final ActiveMQConnection connection;
private final AtomicBoolean stop = new AtomicBoolean(false);
private Throwable error;
private final String name;
public Worker(final String name) throws URISyntaxException, JMSException {
this.name = name;
URI uri = new URI("failover://(mock://(" + tcpUri + "))?updateURIsSupported=false");
ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory(uri);
connection = (ActiveMQConnection) factory.createConnection();
connection.addTransportListener(new TransportListener() {
public void onCommand(Object command) {
}
public void onException(IOException error) {
setError(error);
}
public void transportInterupted() {
LOG.info("Worker " + name + " was interrupted...");
interruptedCount.incrementAndGet();
}
public void transportResumed() {
LOG.info("Worker " + name + " was resummed...");
resumedCount.incrementAndGet();
}
});
connection.start();
}
public void failConnection() {
MockTransport mockTransport = connection.getTransportChannel().narrow(MockTransport.class);
mockTransport.onException(new IOException("Simulated error"));
}
public void start() {
new Thread(this).start();
}
public void stop() {
stop.set(true);
try {
if (!stopped.await(5, TimeUnit.SECONDS)) {
connection.close();
stopped.await(5, TimeUnit.SECONDS);
} else {
connection.close();
}
} catch (Exception e) {
e.printStackTrace();
}
}
public void run() {
try {
ActiveMQQueue queue = new ActiveMQQueue("FOO_" + name);
Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
MessageConsumer consumer = session.createConsumer(queue);
MessageProducer producer = session.createProducer(queue);
producer.setDeliveryMode(DeliveryMode.PERSISTENT);
while (!stop.get()) {
for (int i = 0; i < MESSAGES_PER_ITTERATION; i++) {
producer.send(session.createTextMessage("TEST:" + i));
}
for (int i = 0; i < MESSAGES_PER_ITTERATION; i++) {
consumer.receive();
}
iterations.incrementAndGet();
}
session.close();
} catch (JMSException e) {
setError(e);
} finally {
stopped.countDown();
}
}
public synchronized Throwable getError() {
return error;
}
public synchronized void setError(Throwable error) {
this.error = error;
}
public synchronized void assertNoErrors() {
if (error != null) {
error.printStackTrace();
fail("Worker " + name + " got Exception: " + error);
}
}
}
public void testReconnects() throws Exception {
for (int k = 1; k < 10; k++) {
LOG.info("Test run: " + k);
// Wait for at least one iteration to occur...
for (int i = 0; i < WORKER_COUNT; i++) {
int c = 0;
for (int j = 0; j < 30; j++) {
c = workers[i].iterations.getAndSet(0);
if (c != 0) {
break;
}
workers[i].assertNoErrors();
LOG.info("Test run " + k + ": Waiting for worker " + i + " to finish an iteration.");
Thread.sleep(1000);
}
assertTrue("Test run " + k + ": Worker " + i + " never completed an interation.", c != 0);
workers[i].assertNoErrors();
}
LOG.info("Simulating transport error to cause reconnect.");
// Simulate a transport failure.
for (int i = 0; i < WORKER_COUNT; i++) {
workers[i].failConnection();
}
assertTrue("Timed out waiting for all connections to be interrupted.", Wait.waitFor(new Wait.Condition(){
public boolean isSatisified() throws Exception {
LOG.debug("Test run waiting for connections to get interrupted.. at: " + interruptedCount.get());
return interruptedCount.get() == WORKER_COUNT;
}
}, TimeUnit.SECONDS.toMillis(60)));
// Wait for the connections to re-establish...
assertTrue("Timed out waiting for all connections to be resumed.", Wait.waitFor(new Wait.Condition(){
public boolean isSatisified() throws Exception {
LOG.debug("Test run waiting for connections to get resumed.. at: " + resumedCount.get());
return resumedCount.get() >= WORKER_COUNT;
}
}, TimeUnit.SECONDS.toMillis(60)));
// Reset the counters..
interruptedCount.set(0);
resumedCount.set(0);
for (int i = 0; i < WORKER_COUNT; i++) {
workers[i].iterations.set(0);
}
Thread.sleep(1000);
}
}
@Override
protected void setUp() throws Exception {
bs = new BrokerService();
bs.setPersistent(false);
bs.setUseJmx(true);
TransportConnector connector = bs.addConnector("tcp://localhost:0");
bs.start();
tcpUri = connector.getConnectUri();
workers = new Worker[WORKER_COUNT];
for (int i = 0; i < WORKER_COUNT; i++) {
workers[i] = new Worker("" + i);
workers[i].start();
}
}
@Override
protected void tearDown() throws Exception {
for (int i = 0; i < WORKER_COUNT; i++) {
workers[i].stop();
}
new ServiceStopper().stop(bs);
}
}