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

Example 1 with FragmentAssembler

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

the class EmbeddedPingPong method runPing.

private static void runPing(final String embeddedDirName) throws InterruptedException {
    final Aeron.Context ctx = new Aeron.Context().availableImageHandler(EmbeddedPingPong::availablePongImageHandler).aeronDirectoryName(embeddedDirName);
    System.out.println("Publishing Ping at " + PING_CHANNEL + " on stream Id " + PING_STREAM_ID);
    System.out.println("Subscribing Pong at " + PONG_CHANNEL + " on stream Id " + PONG_STREAM_ID);
    System.out.println("Message size of " + MESSAGE_LENGTH + " bytes");
    final FragmentAssembler dataHandler = new FragmentAssembler(EmbeddedPingPong::pongHandler);
    try (Aeron aeron = Aeron.connect(ctx);
        Publication pingPublication = aeron.addPublication(PING_CHANNEL, PING_STREAM_ID);
        Subscription pongSubscription = aeron.addSubscription(PONG_CHANNEL, PONG_STREAM_ID)) {
        System.out.println("Waiting for new image from Pong...");
        PONG_IMAGE_LATCH.await();
        System.out.println("Warming up... " + WARMUP_NUMBER_OF_ITERATIONS + " iterations of " + WARMUP_NUMBER_OF_MESSAGES + " messages");
        for (int i = 0; i < WARMUP_NUMBER_OF_ITERATIONS; i++) {
            roundTripMessages(dataHandler, pingPublication, pongSubscription, WARMUP_NUMBER_OF_MESSAGES);
        }
        Thread.sleep(100);
        final ContinueBarrier barrier = new ContinueBarrier("Execute again?");
        do {
            HISTOGRAM.reset();
            System.out.println("Pinging " + NUMBER_OF_MESSAGES + " messages");
            roundTripMessages(dataHandler, pingPublication, pongSubscription, NUMBER_OF_MESSAGES);
            System.out.println("Histogram of RTT latencies in microseconds.");
            HISTOGRAM.outputPercentileDistribution(System.out, 1000.0);
        } while (barrier.await());
    }
}

Example 2 with FragmentAssembler

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

the class EmbeddedPingPong method startPong.

private static Thread startPong(final String embeddedDirName) {
    return new Thread() {

        public void run() {
            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 Aeron.Context ctx = new Aeron.Context().aeronDirectoryName(embeddedDirName);
            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()) {
                    PING_HANDLER_IDLE_STRATEGY.idle(pingSubscription.poll(dataHandler, FRAME_COUNT_LIMIT));
                }
                System.out.println("Shutting down...");
            }
        }
    };
}

Example 3 with FragmentAssembler

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

the class MultipleSubscribersWithFragmentAssembly method main.

public static void main(final String[] args) throws Exception {
    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 dataHandler1 = new FragmentAssembler(reassembledStringMessage1(STREAM_ID_1));
    final FragmentAssembler dataHandler2 = new FragmentAssembler(reassembledStringMessage2(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(dataHandler1, FRAGMENT_COUNT_LIMIT);
            final int fragmentsRead2 = subscription2.poll(dataHandler2, FRAGMENT_COUNT_LIMIT);
            if ((fragmentsRead1 + fragmentsRead2) == 0) {
                idleStrategy.idle(idleCount++);
            } else {
                idleCount = 0;
            }
        }
        System.out.println("Shutting down...");
    }
}

Example 4 with FragmentAssembler

use of io.aeron.FragmentAssembler 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 5 with FragmentAssembler

use of io.aeron.FragmentAssembler 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);
}