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

Introduction

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

Prototype

@Override
    @Nullable
    public <T> T execute(ChannelCallback<T> action) 

Source Link

Usage

From source file:acromusashi.stream.component.rabbitmq.DefaultRabbitmqClient.java

/**
 * ??/*from w w w .  ja  va 2 s  . co  m*/
 * 
 * @param template
 *            ???
 * @param queueSizeCallBack
 *            ???
 * @return 
 * @throws InterruptedException
 *             ?????
 */
private int getQueueSizeAndRetry(RabbitTemplate template, QueueSizeCallBack queueSizeCallBack)
        throws InterruptedException {
    int size = 0;
    try {
        size = template.execute(queueSizeCallBack);
    } catch (AmqpException ex) {
        // ???????????????
        // ????????
        Thread.sleep(getRetryInterval());
        size = template.execute(queueSizeCallBack);
    }
    return size;
}

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

@Test
public void testPublisherConfirmNotReceivedMultiThreads() throws Exception {
    ConnectionFactory mockConnectionFactory = mock(ConnectionFactory.class);
    Connection mockConnection = mock(Connection.class);
    Channel mockChannel1 = mock(Channel.class);
    Channel mockChannel2 = mock(Channel.class);
    when(mockChannel1.isOpen()).thenReturn(true);
    when(mockChannel2.isOpen()).thenReturn(true);
    when(mockChannel1.getNextPublishSeqNo()).thenReturn(1L, 2L, 3L, 4L);
    when(mockChannel2.getNextPublishSeqNo()).thenReturn(1L, 2L, 3L, 4L);

    when(mockConnectionFactory.newConnection(any(ExecutorService.class), anyString()))
            .thenReturn(mockConnection);
    when(mockConnection.isOpen()).thenReturn(true);
    PublisherCallbackChannelImpl channel1 = new PublisherCallbackChannelImpl(mockChannel1);
    PublisherCallbackChannelImpl channel2 = new PublisherCallbackChannelImpl(mockChannel2);
    when(mockConnection.createChannel()).thenReturn(channel1).thenReturn(channel2);

    CachingConnectionFactory ccf = new CachingConnectionFactory(mockConnectionFactory);
    ccf.setPublisherConfirms(true);//from   w w w.  j  av a2 s  .  c  om
    ccf.setChannelCacheSize(3);
    final RabbitTemplate template = new RabbitTemplate(ccf);

    final AtomicBoolean confirmed = new AtomicBoolean();
    template.setConfirmCallback((correlationData, ack, cause) -> confirmed.set(true));

    // Hold up the first thread so we get two channels
    final CountDownLatch threadLatch = new CountDownLatch(1);
    final CountDownLatch threadSentLatch = new CountDownLatch(1);
    //Thread 1
    ExecutorService exec = Executors.newSingleThreadExecutor();
    exec.execute(() -> template.execute(channel -> {
        try {
            threadLatch.await(10, TimeUnit.SECONDS);
        } catch (InterruptedException e) {
            Thread.currentThread().interrupt();
        }
        template.doSend(channel, "", ROUTE,
                new SimpleMessageConverter().toMessage("message", new MessageProperties()), false,
                new CorrelationData("def"));
        threadSentLatch.countDown();
        return null;
    }));

    // Thread 2
    template.convertAndSend(ROUTE, (Object) "message", new CorrelationData("abc")); // channel y
    threadLatch.countDown();
    assertTrue(threadSentLatch.await(5, TimeUnit.SECONDS));
    assertEquals(2, template.getUnconfirmedCount());
    Collection<CorrelationData> unconfirmed = template.getUnconfirmed(-1);
    assertEquals(2, unconfirmed.size());
    assertEquals(0, template.getUnconfirmedCount());
    Set<String> ids = new HashSet<String>();
    Iterator<CorrelationData> iterator = unconfirmed.iterator();
    ids.add(iterator.next().getId());
    ids.add(iterator.next().getId());
    assertTrue(ids.remove("abc"));
    assertTrue(ids.remove("def"));
    assertFalse(confirmed.get());
    DirectFieldAccessor dfa = new DirectFieldAccessor(template);
    Map<?, ?> pendingConfirms = (Map<?, ?>) dfa.getPropertyValue("publisherConfirmChannels");
    assertThat(pendingConfirms.size(), greaterThan(0)); // might use 2 or only 1 channel
    exec.shutdown();
    assertTrue(exec.awaitTermination(10, TimeUnit.SECONDS));
    ccf.destroy();
    assertEquals(0, pendingConfirms.size());
}

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