/**
 * 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;

import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageProducer;
import javax.jms.Session;

import junit.framework.TestCase;

import org.apache.activemq.command.ActiveMQQueue;

public class QueueConsumerPriorityTest extends TestCase {

   private static final String VM_BROKER_URL = "vm://localhost?broker.persistent=false&broker.useJmx=true";

   public QueueConsumerPriorityTest(String name) {
      super(name);
   }

   @Override
   protected void setUp() throws Exception {
      super.setUp();
   }

   @Override
   protected void tearDown() throws Exception {
      super.tearDown();
   }

   private Connection createConnection(final boolean start) throws JMSException {
      ConnectionFactory cf = new ActiveMQConnectionFactory(VM_BROKER_URL);
      Connection conn = cf.createConnection();
      if (start) {
         conn.start();
      }
      return conn;
   }

   public void testQueueConsumerPriority() throws JMSException, InterruptedException {
      Connection conn = createConnection(true);

      Session consumerLowPriority = null;
      Session consumerHighPriority = null;
      Session senderSession = null;

      try {

         consumerLowPriority = conn.createSession(false, Session.AUTO_ACKNOWLEDGE);
         consumerHighPriority = conn.createSession(false, Session.AUTO_ACKNOWLEDGE);
         assertNotNull(consumerHighPriority);
         senderSession = conn.createSession(false, Session.AUTO_ACKNOWLEDGE);
         String queueName = getClass().getName();
         ActiveMQQueue low = new ActiveMQQueue(queueName + "?consumer.priority=1");
         MessageConsumer lowConsumer = consumerLowPriority.createConsumer(low);

         ActiveMQQueue high = new ActiveMQQueue(queueName + "?consumer.priority=2");
         MessageConsumer highConsumer = consumerLowPriority.createConsumer(high);

         ActiveMQQueue senderQueue = new ActiveMQQueue(queueName);

         MessageProducer producer = senderSession.createProducer(senderQueue);

         Message msg = senderSession.createTextMessage("test");
         for (int i = 0; i < 10000; i++) {
            producer.send(msg);
            assertNotNull("null on iteration: " + i, highConsumer.receive(500));
         }
         assertNull(lowConsumer.receive(2000));

      }
      finally {
         conn.close();
      }
   }
}

