Example usage for org.springframework.amqp.rabbit.core RabbitTemplate sendAndReceive

Introduction

In this page you can find the example usage for org.springframework.amqp.rabbit.core RabbitTemplate sendAndReceive.

Prototype

@Override
    @Nullable
    public Message sendAndReceive(final Message message) throws AmqpException 

Source Link

Usage

From source file:org.springframework.amqp.rabbit.core.RabbitTemplateIntegrationTests.java

@Test
public void testAtomicSendAndReceive() throws Exception {
    final RabbitTemplate template = new RabbitTemplate(new CachingConnectionFactory());
    template.setRoutingKey(ROUTE);//from   www  .j  a  v  a  2 s . c o  m
    template.setQueue(ROUTE);
    ExecutorService executor = Executors.newFixedThreadPool(1);
    // Set up a consumer to respond to our producer
    Future<Message> received = executor.submit(new Callable<Message>() {

        public Message call() throws Exception {
            Message message = null;
            for (int i = 0; i < 10; i++) {
                message = template.receive();
                if (message != null) {
                    break;
                }
                Thread.sleep(100L);
            }
            assertNotNull("No message received", message);
            template.send(message.getMessageProperties().getReplyTo(), message);
            return message;
        }

    });
    Message message = new Message("test-message".getBytes(), new MessageProperties());
    Message reply = template.sendAndReceive(message);
    assertEquals(new String(message.getBody()),
            new String(received.get(1000, TimeUnit.MILLISECONDS).getBody()));
    assertNotNull("Reply is expected", reply);
    assertEquals(new String(message.getBody()), new String(reply.getBody()));
    // Message was consumed so nothing left on queue
    reply = template.receive();
    assertEquals(null, reply);
}

---

From source file:org.springframework.amqp.rabbit.core.RabbitTemplateIntegrationTests.java

@Test
public void testAtomicSendAndReceiveExternalExecutor() throws Exception {
    CachingConnectionFactory connectionFactory = new CachingConnectionFactory();
    ThreadPoolTaskExecutor exec = new ThreadPoolTaskExecutor();
    final String execName = "make-sure-exec-passed-in";
    exec.setBeanName(execName);/*w ww . ja va  2  s.  com*/
    exec.afterPropertiesSet();
    connectionFactory.setExecutor(exec);
    final Field[] fields = new Field[1];
    ReflectionUtils.doWithFields(RabbitTemplate.class, new FieldCallback() {
        public void doWith(Field field) throws IllegalArgumentException, IllegalAccessException {
            field.setAccessible(true);
            fields[0] = field;
        }
    }, new FieldFilter() {
        public boolean matches(Field field) {
            return field.getName().equals("logger");
        }
    });
    Log logger = Mockito.mock(Log.class);
    when(logger.isTraceEnabled()).thenReturn(true);

    final AtomicBoolean execConfiguredOk = new AtomicBoolean();

    doAnswer(new Answer<Object>() {
        public Object answer(InvocationOnMock invocation) throws Throwable {
            String log = (String) invocation.getArguments()[0];
            if (log.startsWith("Message received") && Thread.currentThread().getName().startsWith(execName)) {
                execConfiguredOk.set(true);
            }
            return null;
        }
    }).when(logger).trace(Mockito.anyString());
    final RabbitTemplate template = new RabbitTemplate(connectionFactory);
    ReflectionUtils.setField(fields[0], template, logger);
    template.setRoutingKey(ROUTE);
    template.setQueue(ROUTE);
    ExecutorService executor = Executors.newFixedThreadPool(1);
    // Set up a consumer to respond to our producer
    Future<Message> received = executor.submit(new Callable<Message>() {

        public Message call() throws Exception {
            Message message = null;
            for (int i = 0; i < 10; i++) {
                message = template.receive();
                if (message != null) {
                    break;
                }
                Thread.sleep(100L);
            }
            assertNotNull("No message received", message);
            template.send(message.getMessageProperties().getReplyTo(), message);
            return message;
        }

    });
    Message message = new Message("test-message".getBytes(), new MessageProperties());
    Message reply = template.sendAndReceive(message);
    assertEquals(new String(message.getBody()),
            new String(received.get(1000, TimeUnit.MILLISECONDS).getBody()));
    assertNotNull("Reply is expected", reply);
    assertEquals(new String(message.getBody()), new String(reply.getBody()));
    // Message was consumed so nothing left on queue
    reply = template.receive();
    assertEquals(null, reply);

    assertTrue(execConfiguredOk.get());
}

---