Examples of org.hornetq.api.core.client.ClientConsumer

org.hornetq.api.core.client.ClientConsumer
A ClientConsumer receives messages from HornetQ queues.
Messages can be consumed synchronously by using the receive() methods which will block until a message is received (or a timeout expires) or asynchronously by setting a {@link MessageHandler}.
These 2 types of consumption are exclusive: a ClientConsumer with a MessageHandler set will throw HornetQException if its receive() methods are called. @author Tim Fox @author Clebert Suconic @author Andy Taylor @see ClientSession#createConsumer(String)


         session.close();


         session = sf.createSession(false, false);


         ClientConsumer cons = session.createConsumer(LargeMessageTest.ADDRESS);


         session.start();


         for (int h = 0; h < 5; h++)
         {
            for (int i = 0; i < 10; i++)
            {
               ClientMessage clientMessage = cons.receive(5000);
               assertNotNull(clientMessage);
               for (int countByte = 0; countByte < messageSize; countByte++)
               {
                  assertEquals(getSamplebyte(countByte), clientMessage.getBodyBuffer().readByte());
               }

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   protected void unacknowledge()
   {
      // we close current session so that message is redelivered
      // for temporary queues/topics, create a new session before closing old so we don't lose the temporary topic/queue


      ClientConsumer old = consumer;
      ClientSession oldSession = session;


      try
      {
         createSession();
      }
      catch (Exception e)
      {
         shutdown();
         throw new RuntimeException(e);


      }
      finally
      {
         try
         {
            old.close();
         }
         catch (HornetQException e)
         {
         }
         try

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         ClientSession coreSession = cf.getCoreFactory().createSession(true, true);


         coreSession.start();
         
         ClientConsumer browser = coreSession.createConsumer("jms.queue.Queue1", true);
       
         conn.start();


         Message m = session.createMessage();
         m.setIntProperty("cnt", 0);
         producer.send(m);
         
          
         assertNotNull(browser.receive(5000));
         
         Thread.sleep(5000);
         
         coreSession.close();

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               assertTrue(server.getPostOffice().getPagingManager().getPageStore(PagingTest.ADDRESS).isPaging());
            }
            else
            {
               System.out.println("Consuming 20 msgs to make it page");
               ClientConsumer consumer = sessionNonTX.createConsumer(PagingTest.ADDRESS);
               for (int j = 0; j < 20; j++)
               {
                  ClientMessage msgReceived = consumer.receive(10000);
                  assertNotNull(msgReceived);
                  msgReceived.acknowledge();
               }
               consumer.close();
            }
         }


         ClientConsumer consumerNonTX = sessionNonTX.createConsumer(PagingTest.ADDRESS);
         while (true)
         {
            ClientMessage msgReceived = consumerNonTX.receive(1000);
            if (msgReceived == null)
            {
               break;
            }
            msgReceived.acknowledge();
         }
         consumerNonTX.close();


         ClientConsumer consumer = sessionNonTX.createConsumer(PagingTest.ADDRESS);


         Assert.assertNull(consumer.receiveImmediate());


         sessionTransacted.commit();


         sessionTransacted.close();


         for (int i = 0; i < 50; i++)
         {
            ClientMessage message = consumer.receive(PagingTest.RECEIVE_TIMEOUT);


            Assert.assertNotNull(message);


            Integer messageID = (Integer)message.getObjectProperty(new SimpleString("id"));


            // System.out.println(messageID);
            Assert.assertNotNull(messageID);
            Assert.assertEquals("message received out of order", i, messageID.intValue());


            System.out.println("MessageID = " + messageID);


            message.acknowledge();
         }


         Assert.assertNull(consumer.receiveImmediate());


         consumer.close();


         sessionNonTX.close();


         sf.close();

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         session.start();
         session.createQueue(PagingTest.ADDRESS, PagingTest.ADDRESS, null, true);


         producerThread.start();


         ClientConsumer consumer = session.createConsumer(PagingTest.ADDRESS);


         for (int i = 0; i < numberOfMessages; i++)
         {
            ClientMessage msg = consumer.receive(5000);
            assertNotNull(msg);
            assertEquals(i, msg.getIntProperty("count").intValue());
            msg.acknowledge();
            if (i > 0 && i % 10 == 0)
            {

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         producerThread.start();


         assertTrue(ready.await(100, TimeUnit.SECONDS));


         ClientConsumer consumer = session.createConsumer(PagingTest.ADDRESS);


         for (int i = 0; i < numberOfMessages; i++)
         {
            ClientMessage msg = consumer.receive(5000);
            assertNotNull(msg);
            log.info("Received " + i + " with property = " + msg.getIntProperty("count"));
            if (i != msg.getIntProperty("count").intValue())
            {
               log.info("###### different");

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            sf = locator.createSessionFactory();


            session = sf.createSession(null, null, false, true, true, false, 0);
         }


         ClientConsumer consumer = session.createConsumer(PagingTest.ADDRESS);


         session.start();


         for (int i = 0; i < numberOfMessages; i++)
         {


            ClientMessage message2 = consumer.receive(PagingTest.RECEIVE_TIMEOUT);


            Assert.assertNotNull(message2);


            message2.acknowledge();


            Assert.assertNotNull(message2);


            Long scheduled = (Long)message2.getObjectProperty(Message.HDR_SCHEDULED_DELIVERY_TIME);
            if (scheduled != null)
            {
               Assert.assertTrue("Scheduling didn't work", System.currentTimeMillis() >= scheduledTime);
            }


            try
            {
               assertBodiesEqual(body, message2.getBodyBuffer());
            }
            catch (AssertionFailedError e)
            {
               PagingTest.log.info("Expected buffer:" + UnitTestCase.dumbBytesHex(body, 40));
               PagingTest.log.info("Arriving buffer:" + UnitTestCase.dumbBytesHex(message2.getBodyBuffer()
                                                                                          .toByteBuffer()
                                                                                          .array(), 40));
               throw e;
            }
         }


         consumer.close();


         session.close();
      }
      finally
      {

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            producer.send(message);
         }


         session.rollback();


         ClientConsumer consumer = session.createConsumer(PagingTest.ADDRESS);


         session.start();


         Assert.assertNull(consumer.receiveImmediate());


         session.close();
      }
      finally
      {

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         sf = locator.createSessionFactory();


         session = sf.createSession(null, null, false, false, false, false, 0);


         ClientConsumer consumer = session.createConsumer(PagingTest.ADDRESS);


         session.start();
         for (int i = 0; i < numberOfMessages; i++)
         {
            System.out.println("Received " + i);
            if (i == 55)
            {
               System.out.println("i = 55");
            }
            ClientMessage msg = consumer.receive(5000);
            Assert.assertNotNull(msg);
            msg.acknowledge();
            session.commit();
         }

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         sf = locator.createSessionFactory();


         session = sf.createSession(null, null, false, false, false, false, 0);


         ClientConsumer consumer = session.createConsumer(PagingTest.ADDRESS);


         session.start();
         // 347 = I just picked any odd number, not rounded, to make sure it's not at the beggining of any page
         for (int i = 0; i < 347; i++)
         {
            System.out.println("Received " + i);
            ClientMessage msg = consumer.receive(5000);
            assertEquals(i, msg.getIntProperty("id").intValue());
            Assert.assertNotNull(msg);
            msg.acknowledge();
            session.commit();
         }


         session.close();


         locator.close();


         server.stop();


         server = createServer(true,
                               config,
                               PagingTest.PAGE_SIZE,
                               PagingTest.PAGE_MAX,
                               new HashMap<String, AddressSettings>());


         server.start();


         locator = createInVMNonHALocator();


         sf = locator.createSessionFactory();


         session = sf.createSession(null, null, false, false, false, false, 0);


         consumer = session.createConsumer(PagingTest.ADDRESS);


         session.start();
         for (int i = 347; i < numberOfMessages; i++)
         {
            System.out.println("Received " + i);
            ClientMessage msg = consumer.receive(5000);
            assertEquals(i, msg.getIntProperty("id").intValue());
            Assert.assertNotNull(msg);
            msg.acknowledge();
            session.commit();
         }

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