/**
 * 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.bugs;

import junit.framework.TestCase;

import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.command.ActiveMQQueue;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.DeliveryMode;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageListener;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.jms.TextMessage;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;

public class AMQ1893Test extends TestCase {

   private static final Logger log = LoggerFactory.getLogger(AMQ1893Test.class);

   static final String QUEUE_NAME = "TEST";

   static final int MESSAGE_COUNT_OF_ONE_GROUP = 10000;

   static final int[] PRIORITIES = new int[]{0, 5, 10};

   static final boolean debug = false;

   private BrokerService brokerService;

   private ActiveMQQueue destination;

   @Override
   protected void setUp() throws Exception {
      brokerService = new BrokerService();
      brokerService.setDeleteAllMessagesOnStartup(true);
      brokerService.addConnector("tcp://localhost:0");
      brokerService.start();
      destination = new ActiveMQQueue(QUEUE_NAME);
   }

   @Override
   protected void tearDown() throws Exception {
      // Stop any running threads.
      brokerService.stop();
   }

   public void testProduceConsumeWithSelector() throws Exception {
      new TestProducer().produceMessages();
      new TestConsumer().consume();
   }

   class TestProducer {

      public void produceMessages() throws Exception {
         ConnectionFactory connectionFactory = new ActiveMQConnectionFactory(brokerService.getTransportConnectors().get(0).getConnectUri().toString());
         Connection connection = connectionFactory.createConnection();
         Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
         Destination destination = session.createQueue(QUEUE_NAME);
         MessageProducer producer = session.createProducer(destination);
         producer.setDeliveryMode(DeliveryMode.PERSISTENT);

         long start = System.currentTimeMillis();

         for (int priority : PRIORITIES) {

            String name = null;
            if (priority == 10) {
               name = "high";
            }
            else if (priority == 5) {
               name = "mid";
            }
            else {
               name = "low";
            }

            for (int i = 1; i <= MESSAGE_COUNT_OF_ONE_GROUP; i++) {

               TextMessage message = session.createTextMessage(name + "_" + i);
               message.setIntProperty("priority", priority);

               producer.send(message);
            }
         }

         long end = System.currentTimeMillis();

         log.info("sent " + (MESSAGE_COUNT_OF_ONE_GROUP * 3) + " messages in " + (end - start) + " ms");

         producer.close();
         session.close();
         connection.close();
      }
   }

   class TestConsumer {

      private CountDownLatch finishLatch = new CountDownLatch(1);

      public void consume() throws Exception {
         ConnectionFactory connectionFactory = new ActiveMQConnectionFactory(brokerService.getTransportConnectors().get(0).getConnectUri().toString());

         final int totalMessageCount = MESSAGE_COUNT_OF_ONE_GROUP * PRIORITIES.length;
         final AtomicInteger counter = new AtomicInteger();
         final MessageListener listener = new MessageListener() {
            public void onMessage(Message message) {

               if (debug) {
                  try {
                     log.info(((TextMessage) message).getText());
                  }
                  catch (JMSException e) {
                     e.printStackTrace();
                  }
               }

               if (counter.incrementAndGet() == totalMessageCount) {

                  finishLatch.countDown();

               }
            }
         };

         int consumerCount = PRIORITIES.length;
         Connection[] connections = new Connection[consumerCount];
         Session[] sessions = new Session[consumerCount];
         MessageConsumer[] consumers = new MessageConsumer[consumerCount];

         for (int i = 0; i < consumerCount; i++) {
            String selector = "priority = " + PRIORITIES[i];

            connections[i] = connectionFactory.createConnection();
            sessions[i] = connections[i].createSession(false, Session.AUTO_ACKNOWLEDGE);

            consumers[i] = sessions[i].createConsumer(destination, selector);
            consumers[i].setMessageListener(listener);
         }

         for (Connection connection : connections) {
            connection.start();
         }

         log.info("received " + counter.get() + " messages");

         assertTrue("got all messages in time", finishLatch.await(60, TimeUnit.SECONDS));

         log.info("received " + counter.get() + " messages");

         for (MessageConsumer consumer : consumers) {
            consumer.close();
         }

         for (Session session : sessions) {
            session.close();
         }

         for (Connection connection : connections) {
            connection.close();
         }
      }

   }

}
