Example usage for org.springframework.integration.channel RendezvousChannel receive

Introduction

In this page you can find the example usage for org.springframework.integration.channel RendezvousChannel receive.

Prototype

@Override 
@Nullable
public Message<?> receive(long timeout) 

Source Link

Document

Receive the first available message from this channel.

Usage

From source file:com.seajas.search.profiler.service.testing.TestingService.java

/**
 * Dispatch a type-specified modifier test request and wait for the result.
 * /*from   w ww . j  a v a 2  s  .  c o m*/
 * @param testFeed
 * @param type
 * @return Map<String, Boolean>
 * @throws TestingException
 */
@SuppressWarnings("unchecked")
private TestResult testModifier(final TestElement testFeed, final TestType type) throws TestingException {
    final UUID sessionUUID = UUID.randomUUID();

    final RendezvousChannel temporaryChannel = new RendezvousChannel();

    final MessageHandler messageHandler = new MessageHandler() {
        @Override
        public void handleMessage(final Message<?> message) {
            String messageUUID = message.getHeaders().get(MessageConstants.HEADER_RENDEZVOUS_UUID,
                    String.class);

            if (sessionUUID.toString().equals(messageUUID))
                temporaryChannel.send(message);
        }
    };

    testingChannel.subscribe(messageHandler);

    try {
        injectionService.inject(testFeed, GroupIdDecorator.decorate(testFeed.getTestingUri().getHost()),
                type.name(), sessionUUID.toString());

        // Now wait for read out the rendezvous-channel until we receive the response

        Message<TestResult> message = (Message<TestResult>) temporaryChannel.receive(receiveTimeout);

        if (message != null)
            return message.getPayload();

        throw new TestingException("Receiving the testing response failed or timed out");
    } finally {
        testingChannel.unsubscribe(messageHandler);
    }
}

---

From source file:com.seajas.search.profiler.service.testing.TestingService.java

/**
 * Dispatch a feed-testing request, where the result is evaluated on the contender-side to be of type RSS - directly or indirectly.
 * /*from  w  w  w  . j a  v  a 2 s . c o m*/
 * <ul>
 * <li>When a TestingException is thrown, something went wrong or no URLs could be found</li>
 * <li>When one entry with a boolean value of 'true' is returned, the URL concerns a direct RSS feed</li>
 * <li>When one or more entry with a boolean value of 'false' is returned, the URL concerns an indirect RSS feed with one or more links</li>
 * </ul>
 * 
 * @param uri
 * @return TestResult
 * @throws TestingException
 */
@SuppressWarnings("unchecked")
public Map<String, Boolean> exploreUri(final URI uri) throws TestingException {
    final UUID sessionUUID = UUID.randomUUID();

    final RendezvousChannel temporaryChannel = new RendezvousChannel();

    final MessageHandler messageHandler = new MessageHandler() {
        @Override
        public void handleMessage(final Message<?> message) {
            String messageUUID = message.getHeaders().get(MessageConstants.HEADER_RENDEZVOUS_UUID,
                    String.class);

            if (sessionUUID.toString().equals(messageUUID))
                temporaryChannel.send(message);
        }
    };

    testingChannel.subscribe(messageHandler);

    try {
        TestElement testElement = new TestElementImpl(uri, null, null, null, null);

        if (logger.isInfoEnabled())
            logger.info("Injecting element with exploration URI '" + uri + "'");

        injectionService.inject(testElement, GroupIdDecorator.decorate(uri.getHost()), TestType.EXPLORE.name(),
                sessionUUID.toString());

        // Now wait for read out the rendezvous-channel until we receive the response

        Message<TestResult> message = (Message<TestResult>) temporaryChannel.receive(receiveTimeout);

        if (message != null) {
            TestResult result = message.getPayload();

            if (!result.isSuccess())
                throw new TestingException(
                        "No feeds - direct or indirect - were retrieved: " + result.getStatusMessage());
            else
                return result.getResult();
        }

        throw new TestingException("Test response aborted by timeout or interrupt.");
    } finally {
        testingChannel.unsubscribe(messageHandler);
    }
}

---