/**
* 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 static org.junit.Assert.assertTrue;
import java.util.Vector;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.MessageProducer;
import javax.jms.Queue;
import javax.jms.Session;
import javax.jms.TextMessage;
import org.apache.activemq.ActiveMQConnection;
import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.ActiveMQMessageConsumer;
import org.apache.activemq.ActiveMQMessageTransformation;
import org.apache.activemq.ActiveMQSession;
import org.apache.activemq.broker.BrokerPlugin;
import org.apache.activemq.broker.BrokerPluginSupport;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.broker.ConnectionContext;
import org.apache.activemq.broker.region.Subscription;
import org.apache.activemq.command.ConsumerId;
import org.apache.activemq.command.ConsumerInfo;
import org.apache.activemq.command.SessionId;
import org.apache.activemq.util.Wait;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.junit.After;
import org.junit.Test;
// see https://issues.apache.org/activemq/browse/AMQ-2573
public class FailoverConsumerUnconsumedTest {
private static final Logger LOG = LoggerFactory.getLogger(FailoverConsumerUnconsumedTest.class);
private static final String QUEUE_NAME = "FailoverWithUnconsumed";
private static final String TRANSPORT_URI = "tcp://localhost:0";
private String url;
final int prefetch = 10;
BrokerService broker;
@After
public void stopBroker() throws Exception {
if (broker != null) {
broker.stop();
}
}
public void startBroker(boolean deleteAllMessagesOnStartup) throws Exception {
broker = createBroker(deleteAllMessagesOnStartup);
broker.start();
}
public BrokerService createBroker(boolean deleteAllMessagesOnStartup) throws Exception {
return createBroker(deleteAllMessagesOnStartup, TRANSPORT_URI);
}
public BrokerService createBroker(boolean deleteAllMessagesOnStartup, String bindAddress) throws Exception {
broker = new BrokerService();
broker.addConnector(bindAddress);
broker.setDeleteAllMessagesOnStartup(deleteAllMessagesOnStartup);
this.url = broker.getTransportConnectors().get(0).getConnectUri().toString();
return broker;
}
@Test
public void testFailoverConsumerDups() throws Exception {
doTestFailoverConsumerDups(true);
}
@Test
public void testFailoverConsumerDupsNoAdvisoryWatch() throws Exception {
doTestFailoverConsumerDups(false);
}
@SuppressWarnings("unchecked")
public void doTestFailoverConsumerDups(final boolean watchTopicAdvisories) throws Exception {
final int maxConsumers = 4;
broker = createBroker(true);
broker.setPlugins(new BrokerPlugin[] {
new BrokerPluginSupport() {
int consumerCount;
// broker is killed on x create consumer
@Override
public Subscription addConsumer(ConnectionContext context,
final ConsumerInfo info) throws Exception {
if (++consumerCount == maxConsumers + (watchTopicAdvisories ? 1:0)) {
context.setDontSendReponse(true);
Executors.newSingleThreadExecutor().execute(new Runnable() {
public void run() {
LOG.info("Stopping broker on consumer: " + info.getConsumerId());
try {
broker.stop();
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
return super.addConsumer(context, info);
}
}
});
broker.start();
ActiveMQConnectionFactory cf = new ActiveMQConnectionFactory("failover:(" + url + ")");
cf.setWatchTopicAdvisories(watchTopicAdvisories);
final ActiveMQConnection connection = (ActiveMQConnection) cf.createConnection();
connection.start();
final Session consumerSession = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
final Queue destination = consumerSession.createQueue(QUEUE_NAME + "?jms.consumer.prefetch=" + prefetch);
final Vector<TestConsumer> testConsumers = new Vector<TestConsumer>();
for (int i=0; i<maxConsumers -1; i++) {
testConsumers.add(new TestConsumer(consumerSession, destination, connection));
}
produceMessage(consumerSession, destination, maxConsumers * prefetch);
assertTrue("add messages are dispatched", Wait.waitFor(new Wait.Condition() {
public boolean isSatisified() throws Exception {
int totalUnconsumed = 0;
for (TestConsumer testConsumer : testConsumers) {
long unconsumed = testConsumer.unconsumedSize();
LOG.info(testConsumer.getConsumerId() + " unconsumed: " + unconsumed);
totalUnconsumed += unconsumed;
}
return totalUnconsumed == (maxConsumers-1) * prefetch;
}
}));
final CountDownLatch commitDoneLatch = new CountDownLatch(1);
Executors.newSingleThreadExecutor().execute(new Runnable() {
public void run() {
try {
LOG.info("add last consumer...");
testConsumers.add(new TestConsumer(consumerSession, destination, connection));
commitDoneLatch.countDown();
LOG.info("done add last consumer");
} catch (Exception e) {
e.printStackTrace();
}
}
});
// will be stopped by the plugin
broker.waitUntilStopped();
// verify interrupt
assertTrue("add messages dispatched and unconsumed are cleaned up", Wait.waitFor(new Wait.Condition() {
public boolean isSatisified() throws Exception {
int totalUnconsumed = 0;
for (TestConsumer testConsumer : testConsumers) {
long unconsumed = testConsumer.unconsumedSize();
LOG.info(testConsumer.getConsumerId() + " unconsumed: " + unconsumed);
totalUnconsumed += unconsumed;
}
return totalUnconsumed == 0;
}
}));
broker = createBroker(false, this.url);
broker.start();
assertTrue("consumer added through failover", commitDoneLatch.await(30, TimeUnit.SECONDS));
// each should again get prefetch messages - all unconsumed deliveries should be rolledback
assertTrue("after start all messages are re dispatched", Wait.waitFor(new Wait.Condition() {
public boolean isSatisified() throws Exception {
int totalUnconsumed = 0;
for (TestConsumer testConsumer : testConsumers) {
long unconsumed = testConsumer.unconsumedSize();
LOG.info(testConsumer.getConsumerId() + " after restart: unconsumed: " + unconsumed);
totalUnconsumed += unconsumed;
}
return totalUnconsumed == (maxConsumers) * prefetch;
}
}));
connection.close();
}
private void produceMessage(final Session producerSession, Queue destination, long count)
throws JMSException {
MessageProducer producer = producerSession.createProducer(destination);
for (int i=0; i<count; i++) {
TextMessage message = producerSession.createTextMessage("Test message " + i);
producer.send(message);
}
producer.close();
}
// allow access to unconsumedMessages
class TestConsumer extends ActiveMQMessageConsumer {
TestConsumer(Session consumerSession, Destination destination, ActiveMQConnection connection) throws Exception {
super((ActiveMQSession) consumerSession,
new ConsumerId(new SessionId(connection.getConnectionInfo().getConnectionId(),1), nextGen()),
ActiveMQMessageTransformation.transformDestination(destination), null, "",
prefetch, -1, false, false, true, null);
}
public int unconsumedSize() {
return unconsumedMessages.size();
}
}
static long idGen = 100;
private static long nextGen() {
idGen -=5;
return idGen;
}
}