MessageGroupTest.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.region.group;

import javax.jms.Connection;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.jms.TextMessage;

import org.apache.activemq.CombinationTestSupport;
import org.apache.activemq.JmsTestSupport;
import org.apache.activemq.command.ActiveMQDestination;
import org.apache.activemq.command.ActiveMQQueue;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class MessageGroupTest extends JmsTestSupport {

   private static final Logger LOG = LoggerFactory.getLogger(CombinationTestSupport.class);

   public void testGroupedMessagesDeliveredToOnlyOneConsumer() throws Exception {

      ActiveMQDestination destination = new ActiveMQQueue("TEST");

      // Setup a first connection
      connection.start();
      Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
      MessageConsumer consumer1 = session.createConsumer(destination);
      MessageProducer producer = session.createProducer(destination);

      // Send the messages.
      for (int i = 0; i < 4; i++) {
         TextMessage message = session.createTextMessage("message " + i);
         message.setStringProperty("JMSXGroupID", "TEST-GROUP");
         message.setIntProperty("JMSXGroupSeq", i + 1);
         LOG.info("sending message: " + message);
         producer.send(message);
      }

      // All the messages should have been sent down connection 1.. just get
      // the first 3
      for (int i = 0; i < 3; i++) {
         TextMessage m1 = (TextMessage) consumer1.receive(500);
         assertNotNull("m1 is null for index: " + i, m1);
         assertEquals(m1.getIntProperty("JMSXGroupSeq"), i + 1);
      }

      // Setup a second connection
      Connection connection1 = factory.createConnection(userName, password);
      connection1.start();
      Session session2 = connection1.createSession(false, Session.AUTO_ACKNOWLEDGE);
      MessageConsumer consumer2 = session2.createConsumer(destination);

      // Close the first consumer.
      consumer1.close();

      // The last messages should now go the the second consumer.
      for (int i = 0; i < 1; i++) {
         TextMessage m1 = (TextMessage) consumer2.receive(500);
         assertNotNull("m1 is null for index: " + i, m1);
         assertEquals(m1.getIntProperty("JMSXGroupSeq"), 4 + i);
      }

      //assert that there are no other messages left for the consumer 2
      Message m = consumer2.receive(100);
      assertNull("consumer 2 has some messages left", m);
   }

   public void testAddingConsumer() throws Exception {
      ActiveMQDestination destination = new ActiveMQQueue("TEST");

      // Setup a first connection
      connection.start();
      Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);

      MessageProducer producer = session.createProducer(destination);
      //MessageConsumer consumer = session.createConsumer(destination);

      TextMessage message = session.createTextMessage("message");
      message.setStringProperty("JMSXGroupID", "TEST-GROUP");

      LOG.info("sending message: " + message);
      producer.send(message);

      MessageConsumer consumer = session.createConsumer(destination);

      TextMessage msg = (TextMessage) consumer.receive();
      assertNotNull(msg);
      boolean first = msg.getBooleanProperty("JMSXGroupFirstForConsumer");
      assertTrue(first);
   }

   public void testClosingMessageGroup() throws Exception {

      ActiveMQDestination destination = new ActiveMQQueue("TEST");

      // Setup a first connection
      connection.start();
      Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
      MessageConsumer consumer1 = session.createConsumer(destination);
      MessageProducer producer = session.createProducer(destination);

      // Send the messages.
      for (int i = 0; i < 4; i++) {
         TextMessage message = session.createTextMessage("message " + i);
         message.setStringProperty("JMSXGroupID", "TEST-GROUP");
         LOG.info("sending message: " + message);
         producer.send(message);
      }

      // All the messages should have been sent down consumer1.. just get
      // the first 3
      for (int i = 0; i < 3; i++) {
         TextMessage m1 = (TextMessage) consumer1.receive(500);
         assertNotNull("m1 is null for index: " + i, m1);
      }

      // Setup a second consumer
      Connection connection1 = factory.createConnection(userName, password);
      connection1.start();
      Session session2 = connection1.createSession(false, Session.AUTO_ACKNOWLEDGE);
      MessageConsumer consumer2 = session2.createConsumer(destination);

      //assert that there are no messages for the consumer 2
      Message m = consumer2.receive(100);
      assertNull("consumer 2 has some messages", m);

      // Close the group
      TextMessage message = session.createTextMessage("message " + 5);
      message.setStringProperty("JMSXGroupID", "TEST-GROUP");
      message.setIntProperty("JMSXGroupSeq", -1);
      LOG.info("sending message: " + message);
      producer.send(message);

      //Send some more messages
      for (int i = 0; i < 4; i++) {
         message = session.createTextMessage("message " + i);
         message.setStringProperty("JMSXGroupID", "TEST-GROUP");
         LOG.info("sending message: " + message);
         producer.send(message);
      }

      // Receive the fourth message
      TextMessage m1 = (TextMessage) consumer1.receive(500);
      assertNotNull("m1 is null for index: " + 4, m1);

      // Receive the closing message
      m1 = (TextMessage) consumer1.receive(500);
      assertNotNull("m1 is null for index: " + 5, m1);

      //assert that there are no messages for the consumer 1
      m = consumer1.receive(100);
      assertNull("consumer 1 has some messages left: " + m, m);

      // The messages should now go to the second consumer.
      for (int i = 0; i < 4; i++) {
         m1 = (TextMessage) consumer2.receive(500);
         assertNotNull("m1 is null for index: " + i, m1);
      }

   }

}