/**
 * 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 java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.atomic.AtomicInteger;

import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.MessageConsumer;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.jms.TextMessage;

import org.apache.activemq.broker.BrokerService;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.Rule;
import org.junit.rules.TestName;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import static org.junit.Assert.*;

public class JmsRollbackRedeliveryTest {
    @Rule
    public TestName testName = new TestName();

    protected static final Logger LOG = LoggerFactory.getLogger(JmsRollbackRedeliveryTest.class);
    final int nbMessages = 10;
    final String destinationName = "Destination";
    final String brokerUrl = "vm://localhost?create=false";
    boolean consumerClose = true;
    boolean rollback = true;
    BrokerService broker;

    @Before
    public void setUp() throws Exception {
        LOG.debug("Starting " + testName.getMethodName());
        broker = new BrokerService();
        broker.setPersistent(false);
        broker.setUseJmx(false);
        broker.start();
        broker.waitUntilStarted();
    }

    @After
    public void tearDown() throws Exception {
        if (broker != null) {
            broker.stop();
            broker.waitUntilStopped();
        }
        LOG.debug("Finishing " + testName.getMethodName());
        Thread.sleep(100);
    }
    
    @Test
    public void testRedelivery() throws Exception {
        doTestRedelivery(brokerUrl, false);
    }

    @Test
    public void testRedeliveryWithInterleavedProducer() throws Exception {
        doTestRedelivery(brokerUrl, true);
    }


    @Test
    public void testRedeliveryWithPrefetch0() throws Exception {
        doTestRedelivery(brokerUrl + "?jms.prefetchPolicy.queuePrefetch=0", true);
    }

    @Test
    public void testRedeliveryWithPrefetch1() throws Exception {
        doTestRedelivery(brokerUrl + "?jms.prefetchPolicy.queuePrefetch=1", true);
    }
    
    public void doTestRedelivery(String brokerUrl, boolean interleaveProducer) throws Exception {
        LOG.debug("entering doTestRedelivery interleaveProducer is " + interleaveProducer);
        ConnectionFactory connectionFactory = new ActiveMQConnectionFactory(brokerUrl);
        
        Connection connection = connectionFactory.createConnection();
        connection.start();

        if (interleaveProducer) {
            populateDestinationWithInterleavedProducer(nbMessages, destinationName, connection);
        } else {
            populateDestination(nbMessages, destinationName, connection);
        }
        
        // Consume messages and rollback transactions
        {
            AtomicInteger received = new AtomicInteger();
            Map<String, Boolean> rolledback = new ConcurrentHashMap<String, Boolean>();
            while (received.get() < nbMessages) {
                Session session = connection.createSession(true, Session.AUTO_ACKNOWLEDGE);
                Destination destination = session.createQueue(destinationName);
                MessageConsumer consumer = session.createConsumer(destination);
                TextMessage msg = (TextMessage) consumer.receive(6000000);
                if (msg != null) {
                    if (msg != null && rolledback.put(msg.getText(), Boolean.TRUE) != null) {
                        LOG.info("Received message " + msg.getText() + " (" + received.getAndIncrement() + ")" + msg.getJMSMessageID());
                        assertTrue(msg.getJMSRedelivered());
                        assertEquals(2, msg.getLongProperty("JMSXDeliveryCount"));
                        session.commit();
                    } else {
                        LOG.info("Rollback message " + msg.getText() + " id: " +  msg.getJMSMessageID());
                        assertFalse("should not have redelivery flag set, id: " + msg.getJMSMessageID(), msg.getJMSRedelivered());
                        session.rollback();
                    }
                }
                consumer.close();
                session.close();
            }
        }
    }

    @Test
    public void testRedeliveryOnSingleConsumer() throws Exception {

        ConnectionFactory connectionFactory = 
            new ActiveMQConnectionFactory(brokerUrl);
        Connection connection = connectionFactory.createConnection();
        connection.start();

        populateDestinationWithInterleavedProducer(nbMessages, destinationName, connection);

        // Consume messages and rollback transactions
        {
            AtomicInteger received = new AtomicInteger();
            Map<String, Boolean> rolledback = new ConcurrentHashMap<String, Boolean>();
            Session session = connection.createSession(true, Session.AUTO_ACKNOWLEDGE);
            Destination destination = session.createQueue(destinationName);
            MessageConsumer consumer = session.createConsumer(destination);            
            while (received.get() < nbMessages) {
                TextMessage msg = (TextMessage) consumer.receive(6000000);
                if (msg != null) {
                    if (msg != null && rolledback.put(msg.getText(), Boolean.TRUE) != null) {
                        LOG.info("Received message " + msg.getText() + " (" + received.getAndIncrement() + ")" + msg.getJMSMessageID());
                        assertTrue(msg.getJMSRedelivered());
                        session.commit();
                    } else {
                        LOG.info("Rollback message " + msg.getText() + " id: " +  msg.getJMSMessageID());
                        session.rollback();
                    }
                }
            }
            consumer.close();
            session.close();
        }
    }


    @Test
    public void testRedeliveryOnSingleSession() throws Exception {

        ConnectionFactory connectionFactory = 
            new ActiveMQConnectionFactory(brokerUrl); 
        Connection connection = connectionFactory.createConnection();
        connection.start();

        populateDestination(nbMessages, destinationName, connection);

        // Consume messages and rollback transactions
        {
            AtomicInteger received = new AtomicInteger();
            Map<String, Boolean> rolledback = new ConcurrentHashMap<String, Boolean>();
            Session session = connection.createSession(true, Session.AUTO_ACKNOWLEDGE);
            Destination destination = session.createQueue(destinationName);
            while (received.get() < nbMessages) {
                MessageConsumer consumer = session.createConsumer(destination);            
                TextMessage msg = (TextMessage) consumer.receive(6000000);
                if (msg != null) {
                    if (msg != null && rolledback.put(msg.getText(), Boolean.TRUE) != null) {
                        LOG.info("Received message " + msg.getText() + " (" + received.getAndIncrement() + ")" + msg.getJMSMessageID());
                        assertTrue(msg.getJMSRedelivered());
                        session.commit();
                    } else {
                        LOG.info("Rollback message " + msg.getText() + " id: " +  msg.getJMSMessageID());
                        session.rollback();
                    }
                }
                consumer.close();
            }
            session.close();
        }
    }
    
    // AMQ-1593
    @Test
    public void testValidateRedeliveryCountOnRollback() throws Exception {

        final int numMessages = 1;
       ConnectionFactory connectionFactory = 
            new ActiveMQConnectionFactory(brokerUrl);
        Connection connection = connectionFactory.createConnection();
        connection.start();

        populateDestination(numMessages, destinationName, connection);

        {
            AtomicInteger received = new AtomicInteger();
            final int maxRetries = new RedeliveryPolicy().getMaximumRedeliveries();
            while (received.get() < maxRetries) {
                Session session = connection.createSession(true, Session.SESSION_TRANSACTED);
                Destination destination = session.createQueue(destinationName);

                MessageConsumer consumer = session.createConsumer(destination);            
                TextMessage msg = (TextMessage) consumer.receive(1000);
                if (msg != null) {
                    LOG.info("Received message " + msg.getText() + " (" + received.getAndIncrement() + ")" + msg.getJMSMessageID());
                    assertEquals("redelivery property matches deliveries", received.get(), msg.getLongProperty("JMSXDeliveryCount"));
                    session.rollback();
                }
                session.close();
            }
            consumeMessage(connection, maxRetries + 1);
        }
    }
    
    // AMQ-1593
    @Test
    public void testValidateRedeliveryCountOnRollbackWithPrefetch0() throws Exception {

       final int numMessages = 1;
       ConnectionFactory connectionFactory = 
            new ActiveMQConnectionFactory(brokerUrl + "?jms.prefetchPolicy.queuePrefetch=0");
        Connection connection = connectionFactory.createConnection();
        connection.start();

        populateDestination(numMessages, destinationName, connection);

        {
            AtomicInteger received = new AtomicInteger();
            final int maxRetries = new RedeliveryPolicy().getMaximumRedeliveries();
            while (received.get() < maxRetries) {
                Session session = connection.createSession(true, Session.SESSION_TRANSACTED);
                Destination destination = session.createQueue(destinationName);

                MessageConsumer consumer = session.createConsumer(destination);            
                TextMessage msg = (TextMessage) consumer.receive(1000);
                if (msg != null) {
                    LOG.info("Received message " + msg.getText() + " (" + received.getAndIncrement() + ")" + msg.getJMSMessageID());
                    assertEquals("redelivery property matches deliveries", received.get(), msg.getLongProperty("JMSXDeliveryCount"));
                    session.rollback();
                }
                session.close();
            }
            
            consumeMessage(connection, maxRetries + 1);
        }
    }


    private void consumeMessage(Connection connection, final int deliveryCount)
            throws JMSException {
        Session session = connection.createSession(true, Session.SESSION_TRANSACTED);
        Destination destination = session.createQueue(destinationName);
        MessageConsumer consumer = session.createConsumer(destination);            
        TextMessage msg = (TextMessage) consumer.receive(1000);
        assertNotNull(msg);
        assertEquals("redelivery property matches deliveries", deliveryCount, msg.getLongProperty("JMSXDeliveryCount"));
        session.commit();
        session.close();
    }

    @Test
    public void testRedeliveryPropertyWithNoRollback() throws Exception {
        final int numMessages = 1;
        ConnectionFactory connectionFactory = 
            new ActiveMQConnectionFactory(brokerUrl);
        Connection connection = connectionFactory.createConnection();
        connection.start();

        populateDestination(numMessages, destinationName, connection);
        connection.close();
        
        {
            AtomicInteger received = new AtomicInteger();
            final int maxRetries = new RedeliveryPolicy().getMaximumRedeliveries();
            while (received.get() < maxRetries) {
                connection = connectionFactory.createConnection();
                connection.start();
                Session session = connection.createSession(true, Session.SESSION_TRANSACTED);
                Destination destination = session.createQueue(destinationName);

                MessageConsumer consumer = session.createConsumer(destination);            
                TextMessage msg = (TextMessage) consumer.receive(2000);
                if (msg != null) {
                    LOG.info("Received message " + msg.getText() + " (" + received.getAndIncrement() + ")" + msg.getJMSMessageID());
                    assertEquals("redelivery property matches deliveries", received.get(), msg.getLongProperty("JMSXDeliveryCount"));
                }
                session.close();
                connection.close();
            }
            connection = connectionFactory.createConnection();
            connection.start();
            consumeMessage(connection, maxRetries + 1);
        }
    }
    
    private void populateDestination(final int nbMessages,
            final String destinationName, Connection connection)
            throws JMSException {
        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        Destination destination = session.createQueue(destinationName);
        MessageProducer producer = session.createProducer(destination);
        for (int i = 1; i <= nbMessages; i++) {
            producer.send(session.createTextMessage("<hello id='" + i + "'/>"));
        }
        producer.close();
        session.close();
    }

    
    private void populateDestinationWithInterleavedProducer(final int nbMessages,
            final String destinationName, Connection connection)
            throws JMSException {
        Session session1 = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        Destination destination1 = session1.createQueue(destinationName);
        MessageProducer producer1 = session1.createProducer(destination1);
        Session session2 = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        Destination destination2 = session2.createQueue(destinationName);
        MessageProducer producer2 = session2.createProducer(destination2);
        
        for (int i = 1; i <= nbMessages; i++) {
            if (i%2 == 0) {
                producer1.send(session1.createTextMessage("<hello id='" + i + "'/>"));
            } else {
                producer2.send(session2.createTextMessage("<hello id='" + i + "'/>"));
            }
        }
        producer1.close();
        session1.close();
        producer2.close();
        session2.close();
    }

}