/**
* 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.amqp;
import static org.junit.Assert.assertTrue;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicInteger;
import javax.jms.Connection;
import javax.jms.ExceptionListener;
import javax.jms.JMSException;
import javax.jms.MessageConsumer;
import javax.jms.MessageProducer;
import javax.jms.Queue;
import javax.jms.Session;
import javax.jms.TextMessage;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.broker.region.policy.PolicyEntry;
import org.apache.activemq.broker.region.policy.PolicyMap;
import org.apache.activemq.broker.region.policy.VMPendingQueueMessageStoragePolicy;
import org.apache.activemq.broker.region.policy.VMPendingSubscriberMessageStoragePolicy;
import org.apache.qpid.jms.JmsConnection;
import org.junit.Test;
public class JMSClientProducerFlowSendFailIfNoSpace extends JMSClientTestSupport {
// used to test sendFailIfNoSpace on SystemUsage
protected final AtomicBoolean gotResourceException = new AtomicBoolean(false);
@Override
protected void performAdditionalConfiguration(BrokerService brokerService) {
// Setup a destination policy where it takes only 1 message at a time.
PolicyMap policyMap = new PolicyMap();
PolicyEntry policy = new PolicyEntry();
policy.setMemoryLimit(1);
policy.setPendingSubscriberPolicy(new VMPendingSubscriberMessageStoragePolicy());
policy.setPendingQueuePolicy(new VMPendingQueueMessageStoragePolicy());
policy.setProducerFlowControl(true);
policyMap.setDefaultEntry(policy);
brokerService.setDestinationPolicy(policyMap);
brokerService.getSystemUsage().setSendFailIfNoSpace(true);
}
@Test(timeout = 60000)
public void testPubisherRecoverAfterBlock() throws Exception {
connection = createConnection();
final Session session = connection.createSession(false, Session.CLIENT_ACKNOWLEDGE);
final Queue queueA = session.createQueue(name.getMethodName());
final MessageProducer producer = session.createProducer(queueA);
final AtomicBoolean keepGoing = new AtomicBoolean(true);
Thread thread = new Thread("Filler") {
@Override
public void run() {
while (keepGoing.get()) {
try {
producer.send(session.createTextMessage("Test message"));
if (gotResourceException.get()) {
// do not flood the broker with requests when full as we are
// sending async and they will be limited by the network buffers
Thread.sleep(200);
}
} catch (Exception e) {
// with async send, there will be no exceptions
LOG.info("Caught excepted exception: {}", e.getMessage());
}
}
}
};
thread.start();
waitForBlockedOrResourceLimit(new AtomicBoolean(false));
// resourceException on second message, resumption if we
// can receive 10
MessageConsumer consumer = session.createConsumer(queueA);
TextMessage msg;
for (int idx = 0; idx < 10; ++idx) {
msg = (TextMessage) consumer.receive(500);
if (msg != null) {
msg.acknowledge();
}
}
keepGoing.set(false);
}
@Test(timeout = 60000)
public void testPubisherRecoverAfterBlockWithSyncSend() throws Exception {
connection = createConnection(false, false);
final Session session = connection.createSession(false, Session.CLIENT_ACKNOWLEDGE);
final Queue queueA = session.createQueue(name.getMethodName());
final MessageProducer producer = session.createProducer(queueA);
final AtomicBoolean keepGoing = new AtomicBoolean(true);
final AtomicInteger exceptionCount = new AtomicInteger(0);
Thread thread = new Thread("Filler") {
@Override
public void run() {
while (keepGoing.get()) {
try {
producer.send(session.createTextMessage("Test message"));
} catch (JMSException jmsEx) {
LOG.debug("Client caught error: {} {}", jmsEx.getClass().getName(), jmsEx.getMessage());
gotResourceException.set(true);
exceptionCount.incrementAndGet();
}
}
}
};
thread.start();
waitForBlockedOrResourceLimit();
// resourceException on second message, resumption if we
// can receive 10
MessageConsumer consumer = session.createConsumer(queueA);
TextMessage msg;
for (int idx = 0; idx < 10; ++idx) {
msg = (TextMessage) consumer.receive(500);
if (msg != null) {
msg.acknowledge();
}
}
assertTrue("we were blocked at least 5 times", 5 < exceptionCount.get());
keepGoing.set(false);
}
protected void waitForBlockedOrResourceLimit() throws InterruptedException {
waitForBlockedOrResourceLimit(new AtomicBoolean(false));
}
protected void waitForBlockedOrResourceLimit(final AtomicBoolean done) throws InterruptedException {
while (true) {
Thread.sleep(100);
// the producer is blocked once the done flag stays true or there is a resource exception
if (done.get() || gotResourceException.get()) {
break;
}
done.set(true);
}
}
@Override
protected Connection createConnection() throws JMSException {
return createConnection(true, true);
}
protected Connection createConnection(boolean async, boolean exceptionListener) throws JMSException {
connection = super.createConnection();
JmsConnection jmsConnection = (JmsConnection) connection;
jmsConnection.setForceAsyncSend(async);
if (exceptionListener) {
connection.setExceptionListener(new ExceptionListener() {
@Override
public void onException(JMSException jmsEx) {
LOG.debug("Client caught error: {} {}", jmsEx.getClass().getName(), jmsEx.getMessage());
gotResourceException.set(true);
}
});
}
connection.start();
return connection;
}
}