/**
* 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.camel.CamelContext;
import org.apache.camel.ContextTestSupport;
import org.apache.camel.Exchange;
import org.apache.camel.Processor;
import org.apache.camel.builder.RouteBuilder;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
import static org.apache.camel.component.jms.JmsComponent.jmsComponent;
/**
* Concurrent consumer with JMSReply test.
*/
public class JmsConcurrentConsumersTest extends ContextTestSupport {
public void testConcurrentConsumersWithReply() throws Exception {
// latch for the 5 exchanges we expect
final CountDownLatch latch = new CountDownLatch(5);
long start = System.currentTimeMillis();
// setup a task executor to be able send the messages in parallel
ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
executor.setCorePoolSize(5);
executor.afterPropertiesSet();
for (int i = 0; i < 5; i++) {
final int count = i;
executor.execute(new Runnable() {
public void run() {
// requestbody is InOut pattern and thus we expect a reply (JMSReply)
Object response = template.requestBody("activemq:a", "World #" + count);
assertEquals("Bye World #" + count, response);
latch.countDown();
}
});
}
// wait for test completion, timeout after 30 sec to let other unit test run to not wait forever
latch.await(30000L, TimeUnit.MILLISECONDS);
assertEquals("Latch should be zero", 0, latch.getCount());
long delta = System.currentTimeMillis() - start;
assertTrue("Should be faster than 10000 millis, took " + delta + " millis", delta < 10000L);
}
protected CamelContext createCamelContext() throws Exception {
CamelContext camelContext = super.createCamelContext();
ConnectionFactory connectionFactory = new ActiveMQConnectionFactory(
"vm://localhost?broker.persistent=false");
camelContext.addComponent("activemq", jmsComponent(connectionFactory));
return camelContext;
}
protected RouteBuilder createRouteBuilder() throws Exception {
return new RouteBuilder() {
public void configure() throws Exception {
from("activemq:a?concurrentConsumers=3").to("activemq:b?concurrentConsumers=3");
from("activemq:b?concurrentConsumers=3").process(new Processor() {
public void process(Exchange exchange) throws Exception {
String body = exchange.getIn().getBody(String.class);
// sleep a little to simulate heacy work and force concurrency processing
Thread.sleep(3000);
exchange.getOut().setBody("Bye " + body);
}
});
}
};
}
}