org.springframework.kafka.listener.MessageListener Java Examples

The following examples show how to use org.springframework.kafka.listener.MessageListener. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: SpringKafkaTest.java    From spring-boot-tutorial with Creative Commons Attribution Share Alike 4.0 International 6 votes vote down vote up 
@Test
public void test() throws InterruptedException {
    log.info("Start auto");
    ContainerProperties containerProps = new ContainerProperties("topic1", "topic2");
    final CountDownLatch latch = new CountDownLatch(4);
    containerProps.setMessageListener((MessageListener<Integer, String>) message -> {
        log.info("received: " + message);
        latch.countDown();
    });
    KafkaMessageListenerContainer<Integer, String> container = createContainer(containerProps);
    container.setBeanName("testAuto");
    container.start();
    Thread.sleep(1000); // wait a bit for the container to start
    KafkaTemplate<Integer, String> template = createTemplate();
    template.setDefaultTopic("zptest");
    template.sendDefault(0, "foo");
    template.sendDefault(2, "bar");
    template.sendDefault(0, "baz");
    template.sendDefault(2, "qux");
    template.flush();
    assertThat(latch.await(60, TimeUnit.SECONDS)).isTrue();
    container.stop();
    log.info("Stop auto");
}
Example #2
Source File: SpringKafkaSenderTest.java    From spring-kafka with MIT License 6 votes vote down vote up 
@Before
public void setUp() throws Exception {
  // set up the Kafka consumer properties
  Map<String, Object> consumerProperties =
      KafkaTestUtils.consumerProps("sender_group", "false", AllSpringKafkaTests.embeddedKafka);

  // create a Kafka consumer factory
  DefaultKafkaConsumerFactory<String, String> consumerFactory =
      new DefaultKafkaConsumerFactory<String, String>(consumerProperties);

  // set the topic that needs to be consumed
  ContainerProperties containerProperties =
      new ContainerProperties(AllSpringKafkaTests.SENDER_TOPIC);

  // create a Kafka MessageListenerContainer
  container = new KafkaMessageListenerContainer<>(consumerFactory, containerProperties);

  // create a thread safe queue to store the received message
  records = new LinkedBlockingQueue<>();

  // setup a Kafka message listener
  container.setupMessageListener(new MessageListener<String, String>() {
    @Override
    public void onMessage(ConsumerRecord<String, String> record) {
      LOGGER.debug("test-listener received message='{}'", record.toString());
      records.add(record);
    }
  });

  // start the container and underlying message listener
  container.start();
  // wait until the container has the required number of assigned partitions
  ContainerTestUtils.waitForAssignment(container,
      AllSpringKafkaTests.embeddedKafka.getPartitionsPerTopic());
}
Example #3
Source File: TraceMessagingAutoConfiguration.java    From spring-cloud-sleuth with Apache License 2.0 5 votes vote down vote up 
@Around("anyCreateListenerContainer() || anyCreateContainer()")
public Object wrapListenerContainerCreation(ProceedingJoinPoint pjp)
		throws Throwable {
	MessageListenerContainer listener = (MessageListenerContainer) pjp.proceed();
	if (listener instanceof AbstractMessageListenerContainer) {
		AbstractMessageListenerContainer container = (AbstractMessageListenerContainer) listener;
		Object someMessageListener = container.getContainerProperties()
				.getMessageListener();
		if (someMessageListener == null) {
			if (log.isDebugEnabled()) {
				log.debug("No message listener to wrap. Proceeding");
			}
		}
		else if (someMessageListener instanceof MessageListener) {
			container.setupMessageListener(createProxy(someMessageListener));
		}
		else {
			if (log.isDebugEnabled()) {
				log.debug("ATM we don't support Batch message listeners");
			}
		}
	}
	else {
		if (log.isDebugEnabled()) {
			log.debug("Can't wrap this listener. Proceeding");
		}
	}
	return listener;
}
Example #4
Source File: SpringKafkaSenderTest.java    From spring-kafka with MIT License 4 votes vote down vote up 
@Before
public void setUp() throws Exception {
  // set up the Kafka consumer properties
  Map<String, Object> consumerProperties =
      KafkaTestUtils.consumerProps("sender", "false",
          embeddedKafka.getEmbeddedKafka());

  // create a Kafka consumer factory
  DefaultKafkaConsumerFactory<String, String> consumerFactory =
      new DefaultKafkaConsumerFactory<String, String>(
          consumerProperties);

  // set the topic that needs to be consumed
  ContainerProperties containerProperties =
      new ContainerProperties(SENDER_TOPIC);

  // create a Kafka MessageListenerContainer
  container = new KafkaMessageListenerContainer<>(consumerFactory,
      containerProperties);

  // create a thread safe queue to store the received message
  records = new LinkedBlockingQueue<>();

  // setup a Kafka message listener
  container
      .setupMessageListener(new MessageListener<String, String>() {
        @Override
        public void onMessage(
            ConsumerRecord<String, String> record) {
          LOGGER.debug("test-listener received message='{}'",
              record.toString());
          records.add(record);
        }
      });

  // start the container and underlying message listener
  container.start();

  // wait until the container has the required number of assigned partitions
  ContainerTestUtils.waitForAssignment(container,
      embeddedKafka.getEmbeddedKafka().getPartitionsPerTopic());
}