NoConsumerDeadLetterTest.java

/**
 * 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.broker.policy;

import javax.jms.DeliveryMode;
import javax.jms.Destination;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.jms.TextMessage;
import javax.jms.Topic;

import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.advisory.AdvisorySupport;
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.command.ActiveMQDestination;

/**
 *
 */
public class NoConsumerDeadLetterTest extends DeadLetterTestSupport {

   // lets disable the inapplicable tests
   @Override
   public void testDurableQueueMessage() throws Exception {
   }

   @Override
   public void testDurableTopicMessage() throws Exception {
   }

   @Override
   protected void doTest() throws Exception {
      makeDlqConsumer();
      sendMessages();

      for (int i = 0; i < messageCount; i++) {
         Message msg = dlqConsumer.receive(1000);
         assertNotNull("Should be a message for loop: " + i, msg);
      }
   }

   public void testConsumerReceivesMessages() throws Exception {
      this.topic = false;
      ActiveMQConnectionFactory factory = createConnectionFactory();
      connection = factory.createConnection();
      connection.start();

      Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
      MessageProducer producer = session.createProducer(getDestination());
      producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT);

      Topic advisoryTopic = AdvisorySupport.getNoQueueConsumersAdvisoryTopic(getDestination());
      MessageConsumer advisoryConsumer = session.createConsumer(advisoryTopic);

      TextMessage msg = session.createTextMessage("Message: x");
      producer.send(msg);

      Message advisoryMessage = advisoryConsumer.receive(1000);
      assertNotNull("Advisory message not received", advisoryMessage);

      Thread.sleep(1000);

      factory = createConnectionFactory();
      connection = factory.createConnection();
      connection.start();

      session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);

      MessageConsumer consumer = session.createConsumer(getDestination());
      Message received = consumer.receive(1000);
      assertNotNull("Message not received", received);
   }

   @Override
   protected BrokerService createBroker() throws Exception {
      BrokerService broker = super.createBroker();

      PolicyEntry policy = new PolicyEntry();
      policy.setSendAdvisoryIfNoConsumers(true);

      PolicyMap pMap = new PolicyMap();
      pMap.setDefaultEntry(policy);

      broker.setDestinationPolicy(pMap);

      return broker;
   }

   @Override
   protected Destination createDlqDestination() {
      if (this.topic) {
         return AdvisorySupport.getNoTopicConsumersAdvisoryTopic((ActiveMQDestination) getDestination());
      } else {
         return AdvisorySupport.getNoQueueConsumersAdvisoryTopic((ActiveMQDestination) getDestination());
      }
   }

}