content: /*
   * 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.artemis.jms.tests;
  
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  import static org.junit.jupiter.api.Assertions.assertNull;
  
  import javax.jms.CompletionListener;
  import javax.jms.Connection;
  import javax.jms.DeliveryMode;
  import javax.jms.Destination;
  import javax.jms.InvalidDestinationException;
  import javax.jms.JMSException;
  import javax.jms.Message;
  import javax.jms.MessageConsumer;
  import javax.jms.MessageProducer;
  import javax.jms.Queue;
  import javax.jms.Session;
  import javax.jms.TextMessage;
  import javax.jms.Topic;
  import java.io.Serializable;
  import java.util.EnumSet;
  import java.util.concurrent.CountDownLatch;
  import java.util.concurrent.TimeUnit;
  
  import org.apache.activemq.artemis.api.core.QueueConfiguration;
  import org.apache.activemq.artemis.api.core.SimpleString;
  import org.apache.activemq.artemis.api.jms.ActiveMQJMSClient;
  import org.apache.activemq.artemis.api.core.RoutingType;
  import org.apache.activemq.artemis.core.server.impl.AddressInfo;
  import org.apache.activemq.artemis.core.settings.impl.AddressSettings;
  import org.apache.activemq.artemis.jms.tests.message.SimpleJMSMessage;
  import org.apache.activemq.artemis.jms.tests.message.SimpleJMSTextMessage;
  import org.apache.activemq.artemis.jms.tests.util.ProxyAssertSupport;
  import org.junit.jupiter.api.Test;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import java.lang.invoke.MethodHandles;
  
  public class MessageProducerTest extends JMSTestCase {
  
     private static final Logger logger = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
  
     @Test
     public void testSendForeignWithForeignDestinationSet() throws Exception {
        Connection conn = createConnection();
  
        Session sess = conn.createSession(false, Session.AUTO_ACKNOWLEDGE);
  
        MessageProducer p = sess.createProducer(queue1);
  
        MessageConsumer c = sess.createConsumer(queue1);
  
        conn.start();
  
        Message foreign = new SimpleJMSMessage(new SimpleDestination());
  
        foreign.setJMSDestination(new SimpleDestination());
  
        // the producer destination should override the foreign destination and the send should succeed
  
        p.send(foreign);
  
        Message m = c.receive(1000);
  
        ProxyAssertSupport.assertNotNull(m);
     }
  
     private static class SimpleDestination implements Destination, Serializable {
  
        private static final long serialVersionUID = -2553676986492799801L;
     }
  
     @Test
     public void testSendToQueuePersistent() throws Exception {
        sendToQueue(true);
     }
  
     @Test
     public void testSendToQueueNonPersistent() throws Exception {
        sendToQueue(false);
     }
  
     private void sendToQueue(final boolean persistent) throws Exception {
        Connection pconn = null;
        Connection cconn = null;
  
        try {
           pconn = createConnection();
           cconn = createConnection();
  
           Session ps = pconn.createSession(false, Session.AUTO_ACKNOWLEDGE);
           Session cs = cconn.createSession(false, Session.AUTO_ACKNOWLEDGE);
           MessageProducer p = ps.createProducer(queue1);
           MessageConsumer c = cs.createConsumer(queue1);
  
           cconn.start();
  
           TextMessage m = ps.createTextMessage("test");
           p.send(m);
  
           TextMessage r = (TextMessage) c.receive(3000);
  
           ProxyAssertSupport.assertEquals(m.getJMSMessageID(), r.getJMSMessageID());
           ProxyAssertSupport.assertEquals("test", r.getText());
        } finally {
           if (pconn != null) {
              pconn.close();
           }
           if (cconn != null) {
              cconn.close();
           }
        }
     }
  
     @Test
     public void testTransactedSendPersistent() throws Exception {
        transactedSend(true);
     }
  
     @Test
     public void testTransactedSendNonPersistent() throws Exception {
        transactedSend(false);
     }
  
     private void transactedSend(final boolean persistent) throws Exception {
        Connection pconn = null;
        Connection cconn = null;
  
        try {
           pconn = createConnection();
           cconn = createConnection();
  
           cconn.start();
  
           Session ts = pconn.createSession(true, -1);
           Session cs = cconn.createSession(false, Session.AUTO_ACKNOWLEDGE);
           MessageProducer p = ts.createProducer(queue1);
           MessageConsumer c = cs.createConsumer(queue1);
  
           TextMessage m = ts.createTextMessage("test");
           p.send(m);
  
           ts.commit();
  
           TextMessage r = (TextMessage) c.receive();
  
           ProxyAssertSupport.assertEquals(m.getJMSMessageID(), r.getJMSMessageID());
           ProxyAssertSupport.assertEquals("test", r.getText());
        } finally {
           pconn.close();
           cconn.close();
        }
     }
  
     // I moved this into it's own class so we can catch any exception that occurs
     // Since this test intermittently fails.
     // (As an aside, technically this test is invalid anyway since the sessions is used for sending
     // and consuming concurrently - and sessions are supposed to be single threaded)
     private class Sender implements Runnable {
  
        volatile Exception ex;
  
        MessageProducer prod;
  
        Message m;
  
        Sender(final MessageProducer prod, final Message m) {
           this.prod = prod;
  
           this.m = m;
        }
  
        @Override
        public synchronized void run() {
           try {
              prod.send(m);
           } catch (Exception e) {
              logger.error(e.getMessage(), e);
  
              ex = e;
           }
        }
     }
  
     @Test
     public void testPersistentSendToTopic() throws Exception {
        sendToTopic(true);
     }
  
     @Test
     public void testNonPersistentSendToTopic() throws Exception {
        sendToTopic(false);
     }
  
     private void sendToTopic(final boolean persistent) throws Exception {
  
        Connection pconn = createConnection();
        Connection cconn = createConnection();
  
        try {
           Session ps = pconn.createSession(false, Session.AUTO_ACKNOWLEDGE);
           Session cs = cconn.createSession(false, Session.AUTO_ACKNOWLEDGE);
           final MessageProducer p = ps.createProducer(ActiveMQServerTestCase.topic1);
  
           p.setDeliveryMode(persistent ? DeliveryMode.PERSISTENT : DeliveryMode.NON_PERSISTENT);
  
           MessageConsumer c = cs.createConsumer(ActiveMQServerTestCase.topic1);
  
           cconn.start();
  
           TextMessage m1 = ps.createTextMessage("test");
  
           Sender sender = new Sender(p, m1);
  
           Thread t = new Thread(sender, "Producer Thread");
  
           t.start();
  
           TextMessage m2 = (TextMessage) c.receive(5000);
  
           if (sender.ex != null) {
              // If an exception was caught in sending we rethrow here so as not to lose it
              throw sender.ex;
           }
  
           ProxyAssertSupport.assertEquals(m2.getJMSMessageID(), m1.getJMSMessageID());
           ProxyAssertSupport.assertEquals("test", m2.getText());
  
           t.join();
        } finally {
           pconn.close();
           cconn.close();
        }
     }
  
     /**
      * Test sending via anonymous producer
      */
     @Test
     public void testSendDestination() throws Exception {
        Connection pconn = createConnection();
        Connection cconn = createConnection();
  
        try {
           Session ps = pconn.createSession(false, Session.AUTO_ACKNOWLEDGE);
           Session cs = cconn.createSession(false, Session.AUTO_ACKNOWLEDGE);
           MessageConsumer c2 = cs.createConsumer(ActiveMQServerTestCase.topic2);
           final Message m1 = ps.createMessage();
  
           cconn.start();
  
           final MessageProducer anonProducer = ps.createProducer(null);
  
           new Thread(() -> {
              try {
                 anonProducer.send(ActiveMQServerTestCase.topic2, m1);
              } catch (Exception e) {
                 logger.error(e.getMessage(), e);
              }
           }, "Producer Thread").start();
  
           Message m2 = c2.receive(3000);
           ProxyAssertSupport.assertEquals(m1.getJMSMessageID(), m2.getJMSMessageID());
  
           logger.debug("ending test");
        } finally {
           pconn.close();
           cconn.close();
        }
     }
  
     @Test
     public void testSendForeignMessage() throws Exception {
        Connection pconn = createConnection();
        Connection cconn = createConnection();
  
        try {
           Session ps = pconn.createSession(false, Session.AUTO_ACKNOWLEDGE);
           Session cs = cconn.createSession(false, Session.AUTO_ACKNOWLEDGE);
           MessageProducer p = ps.createProducer(queue1);
           MessageConsumer c = cs.createConsumer(queue1);
  
           // send a message that is not created by the session
  
           cconn.start();
  
           Message m = new SimpleJMSTextMessage("something");
           p.send(m);
  
           TextMessage rec = (TextMessage) c.receive(3000);
  
           ProxyAssertSupport.assertEquals("something", rec.getText());
  
        } finally {
           pconn.close();
           cconn.close();
        }
     }
  
     @Test
     public void testGetDestination() throws Exception {
        Connection pconn = createConnection();
  
        try {
           Session ps = pconn.createSession(false, Session.AUTO_ACKNOWLEDGE);
           MessageProducer p = ps.createProducer(ActiveMQServerTestCase.topic1);
           Destination dest = p.getDestination();
           ProxyAssertSupport.assertEquals(dest, ActiveMQServerTestCase.topic1);
        } finally {
           pconn.close();
        }
     }
  
     @Test
     public void testGetDestinationOnClosedProducer() throws Exception {
        Connection pconn = createConnection();
  
        try {
           Session ps = pconn.createSession(false, Session.AUTO_ACKNOWLEDGE);
           MessageProducer p = ps.createProducer(ActiveMQServerTestCase.topic1);
           p.close();
  
           try {
              p.getDestination();
              ProxyAssertSupport.fail("should throw exception");
           } catch (javax.jms.IllegalStateException e) {
              // OK
           }
        } finally {
           pconn.close();
        }
     }
  
     @Test
     public void testCreateProducerOnInexistentDestination() throws Exception {
        getJmsServer().getAddressSettingsRepository().addMatch("#", new AddressSettings().setAutoCreateQueues(false));
        getJmsServer().getAddressSettingsRepository().addMatch("#", new AddressSettings().setAutoCreateAddresses(false));
        Connection pconn = createConnection();
        try {
           Session ps = pconn.createSession(false, Session.AUTO_ACKNOWLEDGE);
           try {
              ps.createProducer(ActiveMQJMSClient.createTopic("NoSuchTopic"));
              ProxyAssertSupport.fail("should throw exception");
           } catch (InvalidDestinationException e) {
              // OK
           }
        } finally {
           pconn.close();
        }
     }
  
     //
     // disabled MessageID tests
     //
  
     @Test
     public void testGetDisableMessageID() throws Exception {
        Connection pconn = createConnection();
  
        try {
           Session ps = pconn.createSession(false, Session.AUTO_ACKNOWLEDGE);
           MessageProducer p = ps.createProducer(ActiveMQServerTestCase.topic1);
  
           ProxyAssertSupport.assertFalse(p.getDisableMessageID());
        } finally {
           pconn.close();
        }
     }
  
     @Test
     public void testGetDisableMessageIDOnClosedProducer() throws Exception {
        Connection pconn = createConnection();
  
        try {
           Session ps = pconn.createSession(false, Session.AUTO_ACKNOWLEDGE);
           MessageProducer p = ps.createProducer(ActiveMQServerTestCase.topic1);
  
           p.close();
  
           try {
              p.getDisableMessageID();
              ProxyAssertSupport.fail("should throw exception");
           } catch (javax.jms.IllegalStateException e) {
              // OK
           }
        } finally {
           pconn.close();
        }
     }
  
     //
     // disabled timestamp tests
     //
  
     @Test
     public void testDefaultTimestampDisabled() throws Exception {
        Connection pconn = createConnection();
  
        try {
           Session ps = pconn.createSession(false, Session.AUTO_ACKNOWLEDGE);
           MessageProducer tp = ps.createProducer(ActiveMQServerTestCase.topic1);
           MessageProducer qp = ps.createProducer(queue1);
           ProxyAssertSupport.assertFalse(tp.getDisableMessageTimestamp());
           ProxyAssertSupport.assertFalse(qp.getDisableMessageTimestamp());
        } finally {
           pconn.close();
        }
     }
  
     @Test
     public void testSetTimestampDisabled() throws Exception {
        Connection pconn = createConnection();
        Connection cconn = createConnection();
  
        try {
           Session ps = pconn.createSession(false, Session.AUTO_ACKNOWLEDGE);
           Session cs = cconn.createSession(false, Session.AUTO_ACKNOWLEDGE);
           MessageProducer p = ps.createProducer(queue1);
           MessageConsumer c = cs.createConsumer(queue1);
  
           cconn.start();
  
           p.setDisableMessageTimestamp(true);
           ProxyAssertSupport.assertTrue(p.getDisableMessageTimestamp());
  
           p.send(ps.createMessage());
  
           Message m = c.receive(3000);
  
           ProxyAssertSupport.assertEquals(0L, m.getJMSTimestamp());
  
           p.setDisableMessageTimestamp(false);
           ProxyAssertSupport.assertFalse(p.getDisableMessageTimestamp());
  
           long t1 = System.currentTimeMillis();
  
           p.send(ps.createMessage());
  
           m = c.receive(3000);
  
           long t2 = System.currentTimeMillis();
           long timestamp = m.getJMSTimestamp();
  
           ProxyAssertSupport.assertTrue(timestamp >= t1);
           ProxyAssertSupport.assertTrue(timestamp <= t2);
        } finally {
           pconn.close();
           cconn.close();
        }
     }
  
     @Test
     public void testGetTimestampDisabledOnClosedProducer() throws Exception {
        Connection pconn = createConnection();
  
        try {
           Session ps = pconn.createSession(false, Session.AUTO_ACKNOWLEDGE);
           MessageProducer p = ps.createProducer(ActiveMQServerTestCase.topic1);
  
           p.close();
  
           try {
              p.getDisableMessageTimestamp();
              ProxyAssertSupport.fail("should throw exception");
           } catch (javax.jms.IllegalStateException e) {
              // OK
           }
        } finally {
           pconn.close();
        }
     }
  
     //
     // DeliverMode tests
     //
  
     @Test
     public void testDefaultDeliveryMode() throws Exception {
        Connection pconn = createConnection();
  
        try {
           Session ps = pconn.createSession(false, Session.AUTO_ACKNOWLEDGE);
           MessageProducer tp = ps.createProducer(ActiveMQServerTestCase.topic1);
           MessageProducer qp = ps.createProducer(queue1);
  
           ProxyAssertSupport.assertEquals(DeliveryMode.PERSISTENT, tp.getDeliveryMode());
           ProxyAssertSupport.assertEquals(DeliveryMode.PERSISTENT, qp.getDeliveryMode());
        } finally {
           pconn.close();
        }
     }
  
     @Test
     public void testSetDeliveryMode() throws Exception {
        Connection pconn = createConnection();
  
        try {
           Session ps = pconn.createSession(false, Session.AUTO_ACKNOWLEDGE);
           MessageProducer p = ps.createProducer(ActiveMQServerTestCase.topic1);
  
           p.setDeliveryMode(DeliveryMode.NON_PERSISTENT);
           ProxyAssertSupport.assertEquals(DeliveryMode.NON_PERSISTENT, p.getDeliveryMode());
  
           p.setDeliveryMode(DeliveryMode.PERSISTENT);
           ProxyAssertSupport.assertEquals(DeliveryMode.PERSISTENT, p.getDeliveryMode());
        } finally {
           pconn.close();
        }
     }
  
     @Test
     public void testGetDeliveryModeOnClosedProducer() throws Exception {
        Connection pconn = createConnection();
  
        try {
           Session ps = pconn.createSession(false, Session.AUTO_ACKNOWLEDGE);
           MessageProducer p = ps.createProducer(ActiveMQServerTestCase.topic1);
  
           p.close();
  
           try {
              p.getDeliveryMode();
              ProxyAssertSupport.fail("should throw exception");
           } catch (javax.jms.IllegalStateException e) {
              // OK
           }
        } finally {
           pconn.close();
        }
     }
  
     //
     // Priority tests
     //
  
     @Test
     public void testDefaultPriority() throws Exception {
        Connection pconn = createConnection();
  
        try {
           Session ps = pconn.createSession(false, Session.AUTO_ACKNOWLEDGE);
           MessageProducer tp = ps.createProducer(ActiveMQServerTestCase.topic1);
           MessageProducer qp = ps.createProducer(queue1);
  
           ProxyAssertSupport.assertEquals(4, tp.getPriority());
           ProxyAssertSupport.assertEquals(4, qp.getPriority());
        } finally {
           pconn.close();
        }
     }
  
     @Test
     public void testSetPriority() throws Exception {
        Connection pconn = createConnection();
  
        try {
           Session ps = pconn.createSession(false, Session.AUTO_ACKNOWLEDGE);
           MessageProducer p = ps.createProducer(ActiveMQServerTestCase.topic1);
  
           p.setPriority(9);
           ProxyAssertSupport.assertEquals(9, p.getPriority());
  
           p.setPriority(0);
           ProxyAssertSupport.assertEquals(0, p.getPriority());
        } finally {
           pconn.close();
        }
     }
  
     @Test
     public void testGetPriorityOnClosedProducer() throws Exception {
        Connection pconn = createConnection();
  
        try {
           Session ps = pconn.createSession(false, Session.AUTO_ACKNOWLEDGE);
           MessageProducer p = ps.createProducer(ActiveMQServerTestCase.topic1);
  
           p.close();
  
           try {
              p.getPriority();
              ProxyAssertSupport.fail("should throw exception");
           } catch (javax.jms.IllegalStateException e) {
              // OK
           }
        } finally {
           pconn.close();
        }
     }
  
     //
     // TimeToLive test
     //
  
     @Test
     public void testDefaultTimeToLive() throws Exception {
        Connection pconn = createConnection();
        Session ps = pconn.createSession(false, Session.AUTO_ACKNOWLEDGE);
        MessageProducer tp = ps.createProducer(ActiveMQServerTestCase.topic1);
        MessageProducer qp = ps.createProducer(queue1);
  
        ProxyAssertSupport.assertEquals(0L, tp.getTimeToLive());
        ProxyAssertSupport.assertEquals(0L, qp.getTimeToLive());
     }
  
     @Test
     public void testSetTimeToLive() throws Exception {
        Connection pconn = createConnection();
        Session ps = pconn.createSession(false, Session.AUTO_ACKNOWLEDGE);
        MessageProducer p = ps.createProducer(ActiveMQServerTestCase.topic1);
  
        p.setTimeToLive(100L);
        ProxyAssertSupport.assertEquals(100L, p.getTimeToLive());
  
        p.setTimeToLive(0L);
        ProxyAssertSupport.assertEquals(0L, p.getTimeToLive());
     }
  
     @Test
     public void testGetTimeToLiveOnClosedProducer() throws Exception {
        Connection pconn = createConnection();
  
        Session ps = pconn.createSession(false, Session.AUTO_ACKNOWLEDGE);
        MessageProducer p = ps.createProducer(ActiveMQServerTestCase.topic1);
  
        p.close();
  
        try {
           p.setTimeToLive(100L);
           ProxyAssertSupport.fail("should throw exception");
        } catch (javax.jms.IllegalStateException e) {
           // OK
        }
     }
  
     @Test
     public void testProducerCloseInCompletionListener() throws Exception {
        Connection pconn = createConnection();
  
        Session ps = pconn.createSession(false, Session.AUTO_ACKNOWLEDGE);
        MessageProducer p = ps.createProducer(ActiveMQServerTestCase.topic1);
  
        CountDownLatch latch = new CountDownLatch(1);
        CloseCompletionListener listener = new CloseCompletionListener(p, latch);
  
        p.send(ps.createMessage(), DeliveryMode.NON_PERSISTENT, Message.DEFAULT_PRIORITY, 0L, listener);
  
        ProxyAssertSupport.assertTrue(latch.await(5, TimeUnit.SECONDS));
  
        ProxyAssertSupport.assertNotNull(listener.exception);
  
        ProxyAssertSupport.assertTrue(listener.exception instanceof javax.jms.IllegalStateException);
     }
  
     @Test
     public void testConnectionCloseInCompletionListener() throws Exception {
        Connection pconn = createConnection();
  
        Session ps = pconn.createSession(false, Session.AUTO_ACKNOWLEDGE);
        MessageProducer p = ps.createProducer(ActiveMQServerTestCase.topic1);
  
        CountDownLatch latch = new CountDownLatch(1);
        ConnectionCloseCompletionListener listener = new ConnectionCloseCompletionListener(pconn, latch);
  
        p.send(ps.createMessage(), DeliveryMode.NON_PERSISTENT, Message.DEFAULT_PRIORITY, 0L, listener);
  
        ProxyAssertSupport.assertTrue(latch.await(5, TimeUnit.SECONDS));
  
        ProxyAssertSupport.assertNotNull(listener.exception);
  
        ProxyAssertSupport.assertTrue(listener.exception instanceof javax.jms.IllegalStateException);
     }
  
     @Test
     public void testSessionCloseInCompletionListener() throws Exception {
        Connection pconn = createConnection();
  
        Session ps = pconn.createSession(false, Session.AUTO_ACKNOWLEDGE);
        MessageProducer p = ps.createProducer(ActiveMQServerTestCase.topic1);
  
        CountDownLatch latch = new CountDownLatch(1);
        SessionCloseCompletionListener listener = new SessionCloseCompletionListener(ps, latch);
  
        p.send(ps.createMessage(), DeliveryMode.NON_PERSISTENT, Message.DEFAULT_PRIORITY, 0L, listener);
  
        ProxyAssertSupport.assertTrue(latch.await(5, TimeUnit.SECONDS));
  
        ProxyAssertSupport.assertNotNull(listener.exception);
  
        ProxyAssertSupport.assertTrue(listener.exception instanceof javax.jms.IllegalStateException);
     }
  
     @Test
     public void testSendToQueueOnlyWhenTopicWithSameAddress() throws Exception {
        SimpleString addr = SimpleString.of("testAddr");
  
        EnumSet<RoutingType> supportedRoutingTypes = EnumSet.of(RoutingType.ANYCAST, RoutingType.MULTICAST);
  
        servers.get(0).getActiveMQServer().addAddressInfo(new AddressInfo(addr, supportedRoutingTypes));
        servers.get(0).getActiveMQServer().createQueue(QueueConfiguration.of(addr).setRoutingType(RoutingType.ANYCAST).setDurable(false));
  
        Connection pconn = createConnection();
        pconn.start();
  
        Session ps = pconn.createSession(false, Session.AUTO_ACKNOWLEDGE);
  
        Queue queue = ps.createQueue(addr.toString());
        Topic topic = ps.createTopic(addr.toString());
  
        MessageConsumer queueConsumer = ps.createConsumer(queue);
        MessageConsumer topicConsumer = ps.createConsumer(topic);
  
        MessageProducer queueProducer = ps.createProducer(queue);
        queueProducer.send(ps.createMessage());
  
        assertNotNull(queueConsumer.receive(1000));
        assertNull(topicConsumer.receiveNoWait());
  
        MessageProducer topicProducer = ps.createProducer(topic);
        topicProducer.send(ps.createMessage());
  
        assertNull(queueConsumer.receiveNoWait());
        assertNotNull(topicConsumer.receive(1000));
     }
  
  
     private static class CloseCompletionListener implements CompletionListener {
  
        private MessageProducer p;
        private CountDownLatch latch;
        private JMSException exception;
  
        private CloseCompletionListener(MessageProducer p, CountDownLatch latch) {
           this.p = p;
           this.latch = latch;
        }
  
        @Override
        public void onCompletion(Message message) {
           try {
              p.close();
           } catch (JMSException e) {
              this.exception = e;
           }
           latch.countDown();
        }
  
        @Override
        public void onException(Message message, Exception exception) {
        }
     }
  
     private static class ConnectionCloseCompletionListener implements CompletionListener {
  
        private CountDownLatch latch;
        private JMSException exception;
        private Connection conn;
  
        private ConnectionCloseCompletionListener(Connection conn, CountDownLatch latch) {
           this.conn = conn;
           this.latch = latch;
        }
  
        @Override
        public void onCompletion(Message message) {
           try {
              conn.close();
           } catch (JMSException e) {
              this.exception = e;
           }
           latch.countDown();
        }
  
        @Override
        public void onException(Message message, Exception exception) {
        }
     }
  
     private static class SessionCloseCompletionListener implements CompletionListener {
  
        private CountDownLatch latch;
        private JMSException exception;
        private Session session;
  
        private SessionCloseCompletionListener(Session session, CountDownLatch latch) {
           this.session = session;
           this.latch = latch;
        }
  
        @Override
        public void onCompletion(Message message) {
           try {
              session.close();
           } catch (JMSException e) {
              this.exception = e;
           }
           latch.countDown();
        }
  
        @Override
        public void onException(Message message, Exception exception) {
        }
     }
  }
  