/**
 * 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.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

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 Log log = LogFactory.getLog(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();
            }
        }

    }

}
