Examples with MessagingAdmin co.cask.cdap.api.messaging.MessagingAdmin used on opensource projects

Example 1 with MessagingAdmin

use of co.cask.cdap.api.messaging.MessagingAdmin in project cdap by caskdata.

the class MessagingAppTestRun method testSparkMessaging.

@Test
public void testSparkMessaging() throws Exception {
    ApplicationManager appManager = deployWithArtifact(NAMESPACE, MessagingApp.class, artifactJar);
    final SparkManager sparkManager = appManager.getSparkManager(MessagingSpark.class.getSimpleName()).start();
    final MessageFetcher fetcher = getMessagingContext().getMessageFetcher();
    final AtomicReference<String> messageId = new AtomicReference<>();
    // Wait for the Spark to create the topic
    final MessagingAdmin messagingAdmin = getMessagingAdmin(NAMESPACE.getNamespace());
    Tasks.waitFor(true, new Callable<Boolean>() {

        @Override
        public Boolean call() throws Exception {
            try {
                messagingAdmin.getTopicProperties(MessagingApp.TOPIC);
                return true;
            } catch (TopicNotFoundException e) {
                return false;
            }
        }
    }, 60, TimeUnit.SECONDS, 100, TimeUnit.MILLISECONDS);
    // This is to verify failed transaction is not publishing anything.
    for (String expected : Arrays.asList("start", "block")) {
        Tasks.waitFor(expected, new Callable<String>() {

            @Override
            public String call() throws Exception {
                try (CloseableIterator<Message> iterator = fetcher.fetch(NAMESPACE.getNamespace(), MessagingApp.TOPIC, 1, messageId.get())) {
                    if (!iterator.hasNext()) {
                        return null;
                    }
                    Message message = iterator.next();
                    messageId.set(message.getId());
                    return message.getPayloadAsString();
                }
            }
        }, 60, TimeUnit.SECONDS, 100, TimeUnit.MILLISECONDS);
    }
    // Publish a control message to unblock the Spark execution
    getMessagingContext().getMessagePublisher().publish(NAMESPACE.getNamespace(), MessagingApp.CONTROL_TOPIC, "go");
    // Expects a result message as "result-15", where 15 is the sum of 1,2,3,4,5
    Tasks.waitFor("result-15", new Callable<String>() {

        @Override
        public String call() throws Exception {
            try (CloseableIterator<Message> iterator = fetcher.fetch(NAMESPACE.getNamespace(), MessagingApp.TOPIC, 1, messageId.get())) {
                if (!iterator.hasNext()) {
                    return null;
                }
                Message message = iterator.next();
                messageId.set(message.getId());
                return message.getPayloadAsString();
            }
        }
    }, 60, TimeUnit.SECONDS, 100, TimeUnit.MILLISECONDS);
    sparkManager.waitForRun(ProgramRunStatus.COMPLETED, 60, TimeUnit.SECONDS);
}

Example 2 with MessagingAdmin

use of co.cask.cdap.api.messaging.MessagingAdmin in project cdap by caskdata.

the class MessagingAppTestRun method testWithWorker.

@Test
public void testWithWorker() throws Exception {
    ApplicationManager appManager = deployWithArtifact(NAMESPACE, MessagingApp.class, artifactJar);
    final WorkerManager workerManager = appManager.getWorkerManager(MessagingApp.MessagingWorker.class.getSimpleName()).start();
    MessagingContext messagingContext = getMessagingContext();
    final MessagingAdmin messagingAdmin = getMessagingAdmin(NAMESPACE);
    // Wait for the worker to create the topic
    Tasks.waitFor(true, new Callable<Boolean>() {

        @Override
        public Boolean call() throws Exception {
            try {
                messagingAdmin.getTopicProperties(MessagingApp.TOPIC);
                return true;
            } catch (TopicNotFoundException e) {
                return false;
            }
        }
    }, 5, TimeUnit.SECONDS, 100, TimeUnit.MILLISECONDS);
    // Publish a message
    String message = "message";
    MessagePublisher messagePublisher = messagingContext.getMessagePublisher();
    messagePublisher.publish(NAMESPACE.getNamespace(), MessagingApp.TOPIC, message);
    // The worker will publish back a message with payload as concat(message, message)
    final MessageFetcher messageFetcher = messagingContext.getMessageFetcher();
    Tasks.waitFor(message + message, new Callable<String>() {

        @Override
        public String call() throws Exception {
            try (CloseableIterator<Message> iterator = messageFetcher.fetch(NAMESPACE.getNamespace(), MessagingApp.TOPIC, Integer.MAX_VALUE, 0L)) {
                Message message = Iterators.getLast(iterator, null);
                return message == null ? null : message.getPayloadAsString();
            }
        }
    }, 5, TimeUnit.SECONDS, 100, TimeUnit.MILLISECONDS);
    // Publish concat(message + message) to the app
    messagePublisher.publish(NAMESPACE.getNamespace(), MessagingApp.TOPIC, message + message);
    // timeout.
    try {
        Tasks.waitFor(message + message + message + message, new Callable<String>() {

            @Override
            public String call() throws Exception {
                try (CloseableIterator<Message> iterator = messageFetcher.fetch(NAMESPACE.getNamespace(), MessagingApp.TOPIC, Integer.MAX_VALUE, 0L)) {
                    Message message = Iterators.getLast(iterator, null);
                    return message == null ? null : message.getPayloadAsString();
                }
            }
        }, 2, TimeUnit.SECONDS, 100, TimeUnit.MILLISECONDS);
        Assert.fail("Expected timeout exception");
    } catch (TimeoutException e) {
    // expected
    }
    // Now publish a message to the control topic, to unblock the transaction block.
    messagePublisher.publish(NAMESPACE.getNamespace(), MessagingApp.CONTROL_TOPIC, message);
    // Should expect a new message as concat(message, message, message, message)
    Tasks.waitFor(message + message + message + message, new Callable<String>() {

        @Override
        public String call() throws Exception {
            try (CloseableIterator<Message> iterator = messageFetcher.fetch(NAMESPACE.getNamespace(), MessagingApp.TOPIC, Integer.MAX_VALUE, 0L)) {
                Message message = Iterators.getLast(iterator, null);
                return message == null ? null : message.getPayloadAsString();
            }
        }
    }, 5, TimeUnit.SECONDS, 100, TimeUnit.MILLISECONDS);
    // Wait for the worker to finish and verify that it completes successfully.
    workerManager.waitForRun(ProgramRunStatus.COMPLETED, 5, TimeUnit.SECONDS);
}

Example 3 with MessagingAdmin

use of co.cask.cdap.api.messaging.MessagingAdmin in project cdap by caskdata.

the class MessagingAppTestRun method testTxPublishFetch.

@Test
public void testTxPublishFetch() throws Exception {
    ApplicationManager appManager = deployWithArtifact(NAMESPACE, MessagingApp.class, artifactJar);
    MessagingAdmin messagingAdmin = getMessagingAdmin(NAMESPACE);
    final WorkerManager workerManager = appManager.getWorkerManager(MessagingApp.TransactionalMessagingWorker.class.getSimpleName());
    // Run the TransactionalMessagingWorker twice, one with getting publisher/fetcher inside TX, one outside.
    for (boolean getInTx : Arrays.asList(true, false)) {
        messagingAdmin.createTopic(MessagingApp.TOPIC);
        workerManager.start(Collections.singletonMap("get.in.tx", Boolean.toString(getInTx)));
        // Wait for the worker to finish and verify that it completes successfully.
        int workerRunCount = getInTx ? 1 : 2;
        workerManager.waitForRuns(ProgramRunStatus.COMPLETED, workerRunCount, 60, TimeUnit.SECONDS);
        messagingAdmin.deleteTopic(MessagingApp.TOPIC);
    }
}