/**
* 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.camel.component.jms.issues;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import javax.jms.ConnectionFactory;
import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.broker.BrokerPlugin;
import org.apache.activemq.broker.BrokerPluginSupport;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.broker.ProducerBrokerExchange;
import org.apache.activemq.command.Message;
import org.apache.camel.CamelContext;
import org.apache.camel.Exchange;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.spi.Synchronization;
import org.apache.camel.test.junit4.CamelTestSupport;
import org.junit.After;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import static org.apache.camel.component.jms.JmsComponent.jmsComponentAutoAcknowledge;
/**
* Tests CAMEL-5769.
* Camel JMS producer can block a thread under specific circumstances.
*
*/
public class JmsBlockedAsyncRoutingEngineTest extends CamelTestSupport {
private static final Logger LOG = LoggerFactory.getLogger(JmsBlockedAsyncRoutingEngineTest.class);
private BrokerService broker;
private final CountDownLatch latch = new CountDownLatch(5);
private final Synchronization callback = new Synchronization() {
@Override
public void onFailure(Exchange exchange) {
LOG.info(">>>> Callback onFailure");
latch.countDown();
}
@Override
public void onComplete(Exchange exchange) {
LOG.info(">>>> Callback onComplete");
latch.countDown();
}
};
public void startBroker() throws Exception {
String brokerName = "test-broker-" + System.currentTimeMillis();
String brokerUri = "vm://" + brokerName;
broker = new BrokerService();
broker.setBrokerName(brokerName);
broker.setBrokerId(brokerName);
broker.addConnector(brokerUri);
broker.setPersistent(false);
// This Broker Plugin simulates Producer Flow Control by delaying the broker's ACK by 2 seconds
broker.setPlugins(new BrokerPlugin[] {new DelayerBrokerPlugin()});
broker.start();
}
protected CamelContext createCamelContext() throws Exception {
CamelContext camelContext = super.createCamelContext();
startBroker();
ConnectionFactory connectionFactory = new ActiveMQConnectionFactory(broker.getVmConnectorURI());
camelContext.addComponent("activemq", jmsComponentAutoAcknowledge(connectionFactory));
return camelContext;
}
@Test
public void testBlockedAsyncRoutingEngineTest() throws Exception {
// 0. This message takes 2000ms to ACK from the broker due to the DelayerBrokerPlugin
// Until then, the correlation ID doesn't get updated locally
try {
template.asyncRequestBody("activemq:queue:test?requestTimeout=500&useMessageIDAsCorrelationID=true", "hello");
} catch (Exception e) { }
// 1. We wait a bit for the CorrelationTimeoutMap purge process to run
Thread.sleep(3000);
// 2. We send 5 messages that take 2 seconds so that they time out
template.asyncCallbackRequestBody("activemq:queue:test?requestTimeout=500&useMessageIDAsCorrelationID=true", "beSlow", callback);
template.asyncCallbackRequestBody("activemq:queue:test?requestTimeout=500&useMessageIDAsCorrelationID=true", "beSlow", callback);
template.asyncCallbackRequestBody("activemq:queue:test?requestTimeout=500&useMessageIDAsCorrelationID=true", "beSlow", callback);
template.asyncCallbackRequestBody("activemq:queue:test?requestTimeout=500&useMessageIDAsCorrelationID=true", "beSlow", callback);
template.asyncCallbackRequestBody("activemq:queue:test?requestTimeout=500&useMessageIDAsCorrelationID=true", "beSlow", callback);
// 3. We assert that we were notified of all timeout exceptions
assertTrue(latch.await(3000, TimeUnit.MILLISECONDS));
}
@After
public void cleanup() {
LOG.info(">>>>> Latch countdown count was: " + latch.getCount());
}
protected RouteBuilder createRouteBuilder() throws Exception {
return new RouteBuilder() {
public void configure() throws Exception {
from("activemq:queue:test?concurrentConsumers=5&useMessageIDAsCorrelationID=true&transacted=true")
.filter().simple("${in.body} == 'beSlow'")
.delay(constant(2000))
.log(">>>>> Received message on test queue")
.setBody(constant("Reply"))
.log(">>>>> Sending back reply");
}
};
}
private class DelayerBrokerPlugin extends BrokerPluginSupport {
int i;
@Override
public void send(ProducerBrokerExchange producerExchange, Message messageSend) throws Exception {
String destinationName = messageSend.getDestination().getPhysicalName();
LOG.info("******** Received message for destination " + destinationName);
// do not intercept sends to DLQ
if (destinationName.toLowerCase().contains("test") && i == 0) {
Thread.sleep(2000);
LOG.info("******** Waited 2 seconds for destination: " + destinationName);
i++;
}
super.send(producerExchange, messageSend);
}
}
}