public void testPrefetchValueOne() throws Exception {
ActiveMQTopic consumerDestination = new ActiveMQTopic(TOPIC_NAME + "?consumer.prefetchSize=1");
consumer = session.createConsumer(consumerDestination);
// add a consumer to the slow consumer advisory topic.
ActiveMQTopic slowConsumerAdvisoryTopic =
AdvisorySupport.getSlowConsumerAdvisoryTopic(destination);
MessageConsumer slowConsumerAdvisory = session.createConsumer(slowConsumerAdvisoryTopic);
// publish 2 messages
Message txtMessage = session.createTextMessage("Sample Text Message");
for (int i = 0; i < 2; i++) {
producer.send(txtMessage);
}
// consume 2 messages
for (int i = 0; i < 2; i++) {
Message receivedMsg = consumer.receive(100);
Assert.assertNotNull("received msg " + i + " should not be null", receivedMsg);
}
// check for "slow consumer" advisory message
Message slowAdvisoryMessage = slowConsumerAdvisory.receive(100);
Assert.assertNull(
"should not have received a slow consumer advisory message", slowAdvisoryMessage);
}
public static void main(String[] args) throws Exception {
Test advisory = new Test();
Session session = advisory.getSession();
for (String job : advisory.jobs) {
ActiveMQDestination destination = (ActiveMQDestination) session.createQueue("JOBS." + job);
Destination consumerTopic = AdvisorySupport.getConsumerAdvisoryTopic(destination);
System.out.println("Subscribing to advisory " + consumerTopic);
MessageConsumer consumerAdvisory = session.createConsumer(consumerTopic);
consumerAdvisory.setMessageListener(new ConsumerAdvisoryListener());
Destination noConsumerTopic = AdvisorySupport.getNoQueueConsumersAdvisoryTopic(destination);
System.out.println("Subscribing to advisory " + noConsumerTopic);
MessageConsumer noConsumerAdvisory = session.createConsumer(noConsumerTopic);
noConsumerAdvisory.setMessageListener(new NoConsumerAdvisoryListener());
}
}
public void testAdvisory() throws Exception {
MessageConsumer advConsumer =
session.createConsumer(AdvisorySupport.getMasterBrokerAdvisoryTopic());
master.stop();
assertTrue("slave started", slaveStarted.await(60, TimeUnit.SECONDS));
LOG.info("slave started");
Message advisoryMessage = advConsumer.receive(5000);
LOG.info("received " + advisoryMessage);
assertNotNull("Didn't received advisory", advisoryMessage);
}
