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

Example 6 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());
}

Example 7 with Subscription

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

the class Pong method main.

public static void main(final String[] args) throws Exception {
    final MediaDriver driver = EMBEDDED_MEDIA_DRIVER ? MediaDriver.launchEmbedded() : null;
    final Aeron.Context ctx = new Aeron.Context();
    if (EMBEDDED_MEDIA_DRIVER) {
        ctx.aeronDirectoryName(driver.aeronDirectoryName());
    }
    if (INFO_FLAG) {
        ctx.availableImageHandler(SamplesUtil::printAvailableImage);
        ctx.unavailableImageHandler(SamplesUtil::printUnavailableImage);
    }
    final IdleStrategy idleStrategy = new BusySpinIdleStrategy();
    System.out.println("Subscribing Ping at " + PING_CHANNEL + " on stream Id " + PING_STREAM_ID);
    System.out.println("Publishing Pong at " + PONG_CHANNEL + " on stream Id " + PONG_STREAM_ID);
    final AtomicBoolean running = new AtomicBoolean(true);
    SigInt.register(() -> running.set(false));
    try (Aeron aeron = Aeron.connect(ctx);
        Publication pongPublication = aeron.addPublication(PONG_CHANNEL, PONG_STREAM_ID);
        Subscription pingSubscription = aeron.addSubscription(PING_CHANNEL, PING_STREAM_ID)) {
        final FragmentAssembler dataHandler = new FragmentAssembler((buffer, offset, length, header) -> pingHandler(pongPublication, buffer, offset, length));
        while (running.get()) {
            idleStrategy.idle(pingSubscription.poll(dataHandler, FRAME_COUNT_LIMIT));
        }
        System.out.println("Shutting down...");
    }
    CloseHelper.quietClose(driver);
}

Example 8 with Subscription

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

the class RateSubscriber method main.

public static void main(final String[] args) throws Exception {
    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 FragmentHandler rateReporterHandler = new FragmentAssembler(rateReporterHandler(reporter));
    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, 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.quietClose(driver);
}

Example 9 with Subscription

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

the class SamplesUtil method printAvailableImage.

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

Example 10 with Subscription

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

the class SamplesUtil method printUnavailableImage.

/**
     * Print the information for an unavailable image to stdout.
     *
     * @param image that has gone inactive
     */
public static void printUnavailableImage(final Image image) {
    final Subscription subscription = image.subscription();
    System.out.println(String.format("Unavailable image on %s streamId=%d sessionId=%d", subscription.channel(), subscription.streamId(), image.sessionId()));
}