Package org.springframework.amqp.rabbit.listener

Examples of org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer

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        final Queue rabbitQueue = rabbitConfig.getBean(Queue.class);
        final MessageConverter messageConverter = new SimpleMessageConverter();

        // create a listener container, which is required for asynchronous message consumption.
        // AmqpTemplate cannot be used in this case
        final SimpleMessageListenerContainer listenerContainer = new SimpleMessageListenerContainer();
        listenerContainer.setConnectionFactory(rabbitConnectionFactory);
        listenerContainer.setQueueNames(rabbitQueue.getName());

        // set the callback for message handling
        listenerContainer.setMessageListener(new MessageListener() {
            public void onMessage(Message message) {
                final BigOperation bigOp = (BigOperation) messageConverter.fromMessage(message);

                // simply printing out the operation, but expensive computation could happen here
                System.out.println("Received from RabbitMQ: " + bigOp);
            }
        });

        // set a simple error handler
        listenerContainer.setErrorHandler(new ErrorHandler() {
            public void handleError(Throwable t) {
                t.printStackTrace();
            }
        });

        // register a shutdown hook with the JVM
        Runtime.getRuntime().addShutdownHook(new Thread() {
            @Override
            public void run() {
                System.out.println("Shutting down BigOperationWorker");
                listenerContainer.shutdown();
            }
        });

        // start up the listener. this will block until JVM is killed.
        listenerContainer.start();
        System.out.println("BigOperationWorker started");
    }
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    autoBindDLQ(uniqueName, accessor);
  }

  private void doRegisterConsumer(String name, MessageChannel moduleInputChannel, Queue queue,
      RabbitPropertiesAccessor properties, boolean isPubSub) {
    SimpleMessageListenerContainer listenerContainer = new SimpleMessageListenerContainer(this.connectionFactory);
    listenerContainer.setAcknowledgeMode(properties.getAcknowledgeMode(this.defaultAcknowledgeMode));
    listenerContainer.setChannelTransacted(properties.getTransacted(this.defaultChannelTransacted));
    listenerContainer.setDefaultRequeueRejected(properties.getRequeueRejected(this.defaultDefaultRequeueRejected));
    if (!isPubSub) {
      int concurrency = properties.getConcurrency(this.defaultConcurrency);
      concurrency = concurrency > 0 ? concurrency : 1;
      listenerContainer.setConcurrentConsumers(concurrency);
      int maxConcurrency = properties.getMaxConcurrency(this.defaultMaxConcurrency);
      if (maxConcurrency > concurrency) {
        listenerContainer.setMaxConcurrentConsumers(maxConcurrency);
      }
    }
    listenerContainer.setPrefetchCount(properties.getPrefetchCount(this.defaultPrefetchCount));
    listenerContainer.setTxSize(properties.getTxSize(this.defaultTxSize));
    listenerContainer.setTaskExecutor(new SimpleAsyncTaskExecutor(queue.getName() + "-"));
    listenerContainer.setQueues(queue);
    int maxAttempts = properties.getMaxAttempts(this.defaultMaxAttempts);
    if (maxAttempts > 1) {
      RetryOperationsInterceptor retryInterceptor = RetryInterceptorBuilder.stateless()
          .maxAttempts(maxAttempts)
          .backOffOptions(properties.getBackOffInitialInterval(this.defaultBackOffInitialInterval),
              properties.getBackOffMultiplier(this.defaultBackOffMultiplier),
              properties.getBackOffMaxInterval(this.defaultBackOffMaxInterval))
          .recoverer(new RejectAndDontRequeueRecoverer())
          .build();
      listenerContainer.setAdviceChain(new Advice[] { retryInterceptor });
    }
    listenerContainer.afterPropertiesSet();
    AmqpInboundChannelAdapter adapter = new AmqpInboundChannelAdapter(listenerContainer);
    adapter.setBeanFactory(this.getBeanFactory());
    DirectChannel bridgeToModuleChannel = new DirectChannel();
    bridgeToModuleChannel.setBeanFactory(this.getBeanFactory());
    bridgeToModuleChannel.setBeanName(name + ".bridge");
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    bus.bindConsumer("props.0", new DirectChannel(), properties);
    @SuppressWarnings("unchecked")
    List<Binding> bindings = TestUtils.getPropertyValue(bus, "messageBus.bindings", List.class);
    assertEquals(1, bindings.size());
    AbstractEndpoint endpoint = bindings.get(0).getEndpoint();
    SimpleMessageListenerContainer container = TestUtils.getPropertyValue(endpoint, "messageListenerContainer",
        SimpleMessageListenerContainer.class);
    assertEquals(AcknowledgeMode.AUTO, container.getAcknowledgeMode());
    assertEquals("xdbus.props.0", container.getQueueNames()[0]);
    assertTrue(TestUtils.getPropertyValue(container, "transactional", Boolean.class));
    assertEquals(1, TestUtils.getPropertyValue(container, "concurrentConsumers"));
    assertNull(TestUtils.getPropertyValue(container, "maxConcurrentConsumers"));
    assertTrue(TestUtils.getPropertyValue(container, "defaultRequeueRejected", Boolean.class));
    assertEquals(1, TestUtils.getPropertyValue(container, "prefetchCount"));
    assertEquals(1, TestUtils.getPropertyValue(container, "txSize"));
    Advice retry = TestUtils.getPropertyValue(container, "adviceChain", Advice[].class)[0];
    assertEquals(3, TestUtils.getPropertyValue(retry, "retryOperations.retryPolicy.maxAttempts"));
    assertEquals(1000L, TestUtils.getPropertyValue(retry, "retryOperations.backOffPolicy.initialInterval"));
    assertEquals(10000L, TestUtils.getPropertyValue(retry, "retryOperations.backOffPolicy.maxInterval"));
    assertEquals(2.0, TestUtils.getPropertyValue(retry, "retryOperations.backOffPolicy.multiplier"));
    bus.unbindConsumers("props.0");
    assertEquals(0, bindings.size());

    properties = new Properties();
    properties.put("ackMode", "NONE");
    properties.put("backOffInitialInterval", "2000");
    properties.put("backOffMaxInterval", "20000");
    properties.put("backOffMultiplier", "5.0");
    properties.put("concurrency", "2");
    properties.put("maxAttempts", "23");
    properties.put("maxConcurrency", "3");
    properties.put("prefix", "foo.");
    properties.put("prefetch", "20");
    properties.put("requestHeaderPatterns", "foo");
    properties.put("requeue", "false");
    properties.put("txSize", "10");
    properties.put("partitionIndex", 0);
    bus.bindConsumer("props.0", new DirectChannel(), properties);

    @SuppressWarnings("unchecked")
    List<Binding> bindingsNow = TestUtils.getPropertyValue(bus, "messageBus.bindings", List.class);
    assertEquals(1, bindingsNow.size());
    endpoint = bindingsNow.get(0).getEndpoint();
    container = verifyContainer(endpoint);

    assertEquals("foo.props.0", container.getQueueNames()[0]);

    try {
      bus.bindPubSubConsumer("dummy", null, properties);
      fail("Expected exception");
    }
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    admin.deleteQueue("xdbustest.dlqtest");
    admin.deleteExchange("xdbustest.DLX");
  }

  private SimpleMessageListenerContainer verifyContainer(AbstractEndpoint endpoint) {
    SimpleMessageListenerContainer container;
    Advice retry;
    container = TestUtils.getPropertyValue(endpoint, "messageListenerContainer",
        SimpleMessageListenerContainer.class);
    assertEquals(AcknowledgeMode.NONE, container.getAcknowledgeMode());
    assertThat(container.getQueueNames()[0], startsWith("foo.props.0"));
    assertFalse(TestUtils.getPropertyValue(container, "transactional", Boolean.class));
    assertEquals(2, TestUtils.getPropertyValue(container, "concurrentConsumers"));
    assertEquals(3, TestUtils.getPropertyValue(container, "maxConcurrentConsumers"));
    assertFalse(TestUtils.getPropertyValue(container, "defaultRequeueRejected", Boolean.class));
    assertEquals(20, TestUtils.getPropertyValue(container, "prefetchCount"));
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    return new Sender();
  }

  @Bean
  public SimpleMessageListenerContainer container() {
    SimpleMessageListenerContainer container = new SimpleMessageListenerContainer(
        this.connectionFactory);
    Object listener = new Object() {
      @SuppressWarnings("unused")
      public void handleMessage(String foo) {
        System.out.println(foo);
      }
    };
    MessageListenerAdapter adapter = new MessageListenerAdapter(listener);
    container.setMessageListener(adapter);
    container.setQueueNames("foo");
    return container;
  }
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        private MessageConverter msgConverter;
        private SimpleMessageListenerContainer listenerContainer;
        private static final long DEFAULT_TIMEOUT_MILLIS = 1000;

        public RabbitMQMessageListener(SpringAMQPEndpoint endpoint) {
            this.listenerContainer = new SimpleMessageListenerContainer();
            this.listenerContainer.setTaskExecutor(new SpringAMQPExecutor(endpoint));

            RabbitTemplate template = (RabbitTemplate) endpoint.getAmqpTemplate();
            if(template != null) {
                this.msgConverter = template.getMessageConverter();
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        private MessageConverter msgConverter;
        private SimpleMessageListenerContainer listenerContainer;
        private static final long DEFAULT_TIMEOUT_MILLIS = 1000;

        public RabbitMQMessageListener(SpringAMQPEndpoint endpoint) {
            this.listenerContainer = new SimpleMessageListenerContainer();
            this.listenerContainer.setTaskExecutor(new SpringAMQPExecutor(endpoint));

            RabbitTemplate template = (RabbitTemplate) endpoint.getAmqpTemplate();
            if(template != null) {
                this.msgConverter = template.getMessageConverter();
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    return template;
  }
 
  @Bean
  public SimpleMessageListenerContainer workerListenerContainer() {
    SimpleMessageListenerContainer container = new SimpleMessageListenerContainer();
    container.setConnectionFactory(connectionFactory());
    container.setQueueNames(QueueNames.WORK_QUEUE_NAME);
    MessageListenerAdapter messageListenerAdapter = new MessageListenerAdapter(new WorkerHandler());
    messageListenerAdapter.setMessageConverter(jsonMessageConverter());
    container.setMessageListener(messageListenerAdapter); 
    container.setConcurrentConsumers(1);
    return container;
  }
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  }
 

  @Bean
  public SimpleMessageListenerContainer listenerContainer() {
    SimpleMessageListenerContainer container = new SimpleMessageListenerContainer();   
    container.setConnectionFactory(connectionFactory());
    container.setQueueNames(QueueNames.RESULT_QUEUE_NAME);
    MessageListenerAdapter messageListenerAdapter = new MessageListenerAdapter(masterHandler());
    messageListenerAdapter.setMessageConverter(jsonMessageConverter());
    container.setMessageListener(messageListenerAdapter);
    container.setConcurrentConsumers(10);
    return container;
  }
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    }

    @Test
    public void testAsynchronous() throws Exception {
        final MessageConverter messageConverter = new SimpleMessageConverter();
        final SimpleMessageListenerContainer container = new SimpleMessageListenerContainer();
        container.setConnectionFactory(rabbitConnectionFactory);
        container.setQueueNames(rabbitQueue.getName());

        final CountDownLatch fooLatch = new CountDownLatch(1);
        final CountDownLatch barLatch = new CountDownLatch(2);
        final List<BigOperation> receievedMessageHolder = new ArrayList<BigOperation>(2);
        container.setMessageListener(new MessageListener() {
            public void onMessage(Message message) {
                receievedMessageHolder.add((BigOperation) messageConverter.fromMessage(message));
                fooLatch.countDown();
                barLatch.countDown();
            }
        });
        container.setErrorHandler(new ErrorHandler() {
            public void handleError(Throwable t) {
                t.printStackTrace();
            }
        });

        try {
            container.start();

            amqpTemplate.convertAndSend(rabbitQueue.getName(), new BigOperation("foo"));
            assertTrue(fooLatch.await(5, TimeUnit.SECONDS));
            assertEquals(receievedMessageHolder.get(0).getName(), "foo");

            amqpTemplate.convertAndSend(rabbitQueue.getName(), new BigOperation("bar"));
            assertTrue(barLatch.await(5, TimeUnit.SECONDS));
            assertEquals(receievedMessageHolder.get(1).getName(), "bar");
        } finally {
            container.shutdown();
        }
    }
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