Examples with Subscription io.aeron.Subscription used on opensource projects

Example 16 with Subscription

use of io.aeron.Subscription in project aeron by real-logic.

the class RateSubscriber method main.

/**
 * Main method for launching the process.
 *
 * @param args passed to the process.
 * @throws InterruptedException if the task is interrupted
 * @throws ExecutionException if the {@link Future} has an error.
 */
public static void main(final String[] args) throws InterruptedException, ExecutionException {
    System.out.println("Subscribing to " + CHANNEL + " on stream id " + STREAM_ID);
    final MediaDriver driver = EMBEDDED_MEDIA_DRIVER ? MediaDriver.launchEmbedded() : null;
    final ExecutorService executor = Executors.newFixedThreadPool(1);
    final Aeron.Context ctx = new Aeron.Context().availableImageHandler(SamplesUtil::printAvailableImage).unavailableImageHandler(SamplesUtil::printUnavailableImage);
    if (EMBEDDED_MEDIA_DRIVER) {
        ctx.aeronDirectoryName(driver.aeronDirectoryName());
    }
    final RateReporter reporter = new RateReporter(TimeUnit.SECONDS.toNanos(1), SamplesUtil::printRate);
    final AtomicBoolean running = new AtomicBoolean(true);
    SigInt.register(() -> {
        reporter.halt();
        running.set(false);
    });
    try (Aeron aeron = Aeron.connect(ctx);
        Subscription subscription = aeron.addSubscription(CHANNEL, STREAM_ID)) {
        final Future<?> future = executor.submit(() -> SamplesUtil.subscriberLoop(rateReporterHandler(reporter), FRAGMENT_COUNT_LIMIT, running).accept(subscription));
        reporter.run();
        System.out.println("Shutting down...");
        future.get();
    }
    executor.shutdown();
    if (!executor.awaitTermination(5, TimeUnit.SECONDS)) {
        System.out.println("Warning: not all tasks completed promptly");
    }
    CloseHelper.close(driver);
}

Example 17 with Subscription

use of io.aeron.Subscription in project aeron by real-logic.

the class EmbeddedThroughput method main.

/**
 * Main method for launching the process.
 *
 * @param args passed to the process.
 * @throws InterruptedException if the thread is interrupted during linger.
 */
public static void main(final String[] args) throws InterruptedException {
    loadPropertiesFiles(args);
    final RateReporter reporter = new RateReporter(TimeUnit.SECONDS.toNanos(1), EmbeddedThroughput::printRate);
    final ExecutorService executor = Executors.newFixedThreadPool(2);
    final AtomicBoolean running = new AtomicBoolean(true);
    try (MediaDriver mediaDriver = MediaDriver.launch();
        Aeron aeron = Aeron.connect(new Aeron.Context().aeronDirectoryName(mediaDriver.aeronDirectoryName()));
        Subscription subscription = aeron.addSubscription(CHANNEL, STREAM_ID);
        Publication publication = aeron.addPublication(CHANNEL, STREAM_ID)) {
        executor.execute(reporter);
        executor.execute(() -> SamplesUtil.subscriberLoop(rateReporterHandler(reporter), FRAGMENT_COUNT_LIMIT, running).accept(subscription));
        final ContinueBarrier barrier = new ContinueBarrier("Execute again?");
        final IdleStrategy idleStrategy = SampleConfiguration.newIdleStrategy();
        do {
            System.out.format("%nStreaming %,d messages of payload length %d bytes to %s on stream id %d%n", NUMBER_OF_MESSAGES, MESSAGE_LENGTH, CHANNEL, STREAM_ID);
            printingActive = true;
            long backPressureCount = 0;
            for (long i = 0; i < NUMBER_OF_MESSAGES; i++) {
                OFFER_BUFFER.putLong(0, i);
                idleStrategy.reset();
                while (publication.offer(OFFER_BUFFER, 0, MESSAGE_LENGTH, null) < 0) {
                    backPressureCount++;
                    idleStrategy.idle();
                }
            }
            System.out.println("Done streaming. backPressureRatio=" + ((double) backPressureCount / NUMBER_OF_MESSAGES));
            if (LINGER_TIMEOUT_MS > 0) {
                System.out.println("Lingering for " + LINGER_TIMEOUT_MS + " milliseconds...");
                Thread.sleep(LINGER_TIMEOUT_MS);
            }
            printingActive = false;
        } while (barrier.await());
        running.set(false);
        reporter.halt();
        executor.shutdown();
    }
}

Example 18 with Subscription

use of io.aeron.Subscription in project Aeron by real-logic.

the class RateSubscriber method main.

/**
 * Main method for launching the process.
 *
 * @param args passed to the process.
 * @throws InterruptedException if the task is interrupted
 * @throws ExecutionException if the {@link Future} has an error.
 */
public static void main(final String[] args) throws InterruptedException, ExecutionException {
    System.out.println("Subscribing to " + CHANNEL + " on stream id " + STREAM_ID);
    final MediaDriver driver = EMBEDDED_MEDIA_DRIVER ? MediaDriver.launchEmbedded() : null;
    final ExecutorService executor = Executors.newFixedThreadPool(1);
    final Aeron.Context ctx = new Aeron.Context().availableImageHandler(SamplesUtil::printAvailableImage).unavailableImageHandler(SamplesUtil::printUnavailableImage);
    if (EMBEDDED_MEDIA_DRIVER) {
        ctx.aeronDirectoryName(driver.aeronDirectoryName());
    }
    final RateReporter reporter = new RateReporter(TimeUnit.SECONDS.toNanos(1), SamplesUtil::printRate);
    final AtomicBoolean running = new AtomicBoolean(true);
    SigInt.register(() -> {
        reporter.halt();
        running.set(false);
    });
    try (Aeron aeron = Aeron.connect(ctx);
        Subscription subscription = aeron.addSubscription(CHANNEL, STREAM_ID)) {
        final Future<?> future = executor.submit(() -> SamplesUtil.subscriberLoop(rateReporterHandler(reporter), FRAGMENT_COUNT_LIMIT, running).accept(subscription));
        reporter.run();
        System.out.println("Shutting down...");
        future.get();
    }
    executor.shutdown();
    if (!executor.awaitTermination(5, TimeUnit.SECONDS)) {
        System.out.println("Warning: not all tasks completed promptly");
    }
    CloseHelper.close(driver);
}

Example 19 with Subscription

use of io.aeron.Subscription in project Aeron by real-logic.

the class MultipleSubscribersWithFragmentAssembly method main.

/**
 * Main method for launching the process.
 *
 * @param args passed to the process.
 */
public static void main(final String[] args) {
    System.out.format("Subscribing to %s on stream ID %d and stream ID %d%n", CHANNEL, STREAM_ID_1, STREAM_ID_2);
    final Aeron.Context ctx = new Aeron.Context().availableImageHandler(MultipleSubscribersWithFragmentAssembly::eventAvailableImage).unavailableImageHandler(MultipleSubscribersWithFragmentAssembly::eventUnavailableImage);
    final FragmentAssembler assembler1 = new FragmentAssembler(reassembledMessage1(STREAM_ID_1));
    final FragmentAssembler assembler2 = new FragmentAssembler(reassembledMessage2(STREAM_ID_2));
    final AtomicBoolean running = new AtomicBoolean(true);
    SigInt.register(() -> running.set(false));
    try (Aeron aeron = Aeron.connect(ctx);
        Subscription subscription1 = aeron.addSubscription(CHANNEL, STREAM_ID_1);
        Subscription subscription2 = aeron.addSubscription(CHANNEL, STREAM_ID_2)) {
        final IdleStrategy idleStrategy = new BackoffIdleStrategy(100, 10, TimeUnit.MICROSECONDS.toNanos(1), TimeUnit.MICROSECONDS.toNanos(100));
        int idleCount = 0;
        while (running.get()) {
            final int fragmentsRead1 = subscription1.poll(assembler1, FRAGMENT_COUNT_LIMIT);
            final int fragmentsRead2 = subscription2.poll(assembler2, FRAGMENT_COUNT_LIMIT);
            if ((fragmentsRead1 + fragmentsRead2) == 0) {
                idleStrategy.idle(idleCount++);
            } else {
                idleCount = 0;
            }
        }
        System.out.println("Shutting down...");
    }
}

Example 20 with Subscription

use of io.aeron.Subscription in project Aeron by real-logic.

the class MultipleSubscribersWithFragmentAssembly method eventAvailableImage.

/**
 * Print the information for an available image to stdout.
 *
 * @param image that has been created.
 */
public static void eventAvailableImage(final Image image) {
    final Subscription subscription = image.subscription();
    System.out.format("new image on %s streamId %x sessionId %x from %s%n", subscription.channel(), subscription.streamId(), image.sessionId(), image.sourceIdentity());
}