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

Example 26 with Publication

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

the class ClusterTest method shouldRejectAnAdminRequestIfLeadershipTermIsInvalid.

@Test
@InterruptAfter(10)
void shouldRejectAnAdminRequestIfLeadershipTermIsInvalid() {
    cluster = aCluster().withStaticNodes(3).start();
    systemTestWatcher.cluster(cluster);
    cluster.awaitLeader();
    AeronCluster client = cluster.connectClient();
    final long requestCorrelationId = System.nanoTime();
    final long expectedLeadershipTermId = client.leadershipTermId();
    final long invalidLeadershipTermId = expectedLeadershipTermId - 1000;
    final AdminRequestType requestType = AdminRequestType.NULL_VAL;
    final MutableBoolean responseReceived = injectAdminResponseEgressListener(requestCorrelationId, requestType, AdminResponseCode.ERROR, "Invalid leadership term: expected " + expectedLeadershipTermId + ", got " + invalidLeadershipTermId);
    client = cluster.connectClient();
    final AdminRequestEncoder adminRequestEncoder = new AdminRequestEncoder().wrapAndApplyHeader(cluster.msgBuffer(), 0, new MessageHeaderEncoder()).leadershipTermId(invalidLeadershipTermId).clusterSessionId(client.clusterSessionId()).correlationId(requestCorrelationId).requestType(requestType);
    final Publication ingressPublication = client.ingressPublication();
    while (ingressPublication.offer(adminRequestEncoder.buffer(), 0, MessageHeaderEncoder.ENCODED_LENGTH + adminRequestEncoder.encodedLength()) < 0) {
        Tests.yield();
    }
    while (!responseReceived.get()) {
        client.pollEgress();
        Tests.yield();
    }
}

Example 27 with Publication

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

the class ControlResponseProxy method sendDescriptor.

int sendDescriptor(final long controlSessionId, final long correlationId, final UnsafeBuffer descriptorBuffer, final ControlSession session) {
    final int messageLength = Catalog.descriptorLength(descriptorBuffer) + MESSAGE_HEADER_LENGTH;
    final int contentLength = messageLength - recordingIdEncodingOffset() - MESSAGE_HEADER_LENGTH;
    recordingDescriptorEncoder.wrapAndApplyHeader(buffer, 0, messageHeaderEncoder).controlSessionId(controlSessionId).correlationId(correlationId);
    int attempts = SEND_ATTEMPTS;
    final Publication publication = session.controlPublication();
    do {
        final long result = publication.offer(buffer, 0, DESCRIPTOR_PREFIX_LENGTH, descriptorBuffer, DESCRIPTOR_CONTENT_OFFSET, contentLength);
        if (result > 0) {
            return messageLength;
        }
        checkResult(session, result);
    } while (--attempts > 0);
    return 0;
}

Example 28 with Publication

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

the class EmbeddedPingPong method startPong.

private static Thread startPong(final Aeron aeron) {
    return new Thread(() -> {
        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);
        try (Subscription pingSubscription = aeron.addSubscription(PING_CHANNEL, PING_STREAM_ID);
            Publication pongPublication = EXCLUSIVE_PUBLICATIONS ? aeron.addExclusivePublication(PONG_CHANNEL, PONG_STREAM_ID) : aeron.addPublication(PONG_CHANNEL, PONG_STREAM_ID)) {
            final BufferClaim bufferClaim = new BufferClaim();
            final FragmentHandler fragmentHandler = (buffer, offset, length, header) -> pingHandler(bufferClaim, pongPublication, buffer, offset, length, header);
            while (RUNNING.get()) {
                PING_HANDLER_IDLE_STRATEGY.idle(pingSubscription.poll(fragmentHandler, FRAME_COUNT_LIMIT));
            }
            System.out.println("Shutting down...");
        }
    });
}

Example 29 with Publication

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

the class EmbeddedPingPong method runPing.

private static void runPing(final Aeron aeron) throws InterruptedException {
    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 payload length of " + MESSAGE_LENGTH + " bytes");
    System.out.println("Using exclusive publications: " + EXCLUSIVE_PUBLICATIONS);
    final FragmentAssembler dataHandler = new FragmentAssembler(EmbeddedPingPong::pongHandler);
    try (Subscription pongSubscription = aeron.addSubscription(PONG_CHANNEL, PONG_STREAM_ID, EmbeddedPingPong::availablePongImageHandler, null);
        Publication pingPublication = EXCLUSIVE_PUBLICATIONS ? aeron.addExclusivePublication(PING_CHANNEL, PING_STREAM_ID) : aeron.addPublication(PING_CHANNEL, PING_STREAM_ID)) {
        System.out.println("Waiting for new image from Pong...");
        PONG_IMAGE_LATCH.await();
        System.out.format("Warming up... %d iterations of %,d messages%n", WARMUP_NUMBER_OF_ITERATIONS, WARMUP_NUMBER_OF_MESSAGES);
        for (int i = 0; i < WARMUP_NUMBER_OF_ITERATIONS; i++) {
            roundTripMessages(dataHandler, pingPublication, pongSubscription, WARMUP_NUMBER_OF_MESSAGES);
            Thread.yield();
        }
        Thread.sleep(100);
        final ContinueBarrier barrier = new ContinueBarrier("Execute again?");
        do {
            HISTOGRAM.reset();
            System.out.format("Pinging %,d messages%n", NUMBER_OF_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 30 with Publication

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

the class MultiplePublishersWithFragmentation method main.

/**
 * Main method for launching the process.
 *
 * @param args passed to the process.
 */
public static void main(final String[] args) {
    System.out.println("Publishing to " + CHANNEL + " on stream id " + STREAM_ID_1 + " and stream id " + STREAM_ID_2);
    try (Aeron aeron = Aeron.connect();
        Publication publication1 = aeron.addPublication(CHANNEL, STREAM_ID_1);
        Publication publication2 = aeron.addPublication(CHANNEL, STREAM_ID_2)) {
        int j = 1;
        int k = 1;
        final String message1 = "Hello World! " + j;
        BUFFER_1.putBytes(0, message1.getBytes());
        final String message2 = "Hello World! " + k;
        BUFFER_2.putBytes(0, message2.getBytes());
        while (j <= 5000 || k <= 5000) {
            boolean offerStatus1 = false;
            boolean offerStatus2 = false;
            long result1;
            long result2;
            while (!(offerStatus1 || offerStatus2)) {
                if (j <= 5000) {
                    result1 = publication1.offer(BUFFER_1, 0, BUFFER_1.capacity());
                    if (result1 > 0) {
                        j++;
                        offerStatus1 = true;
                        System.out.println("Successfully sent data on stream id " + STREAM_ID_1 + " and data length " + BUFFER_1.capacity() + " at offset " + result1);
                    } else {
                        if (result1 == Publication.BACK_PRESSURED) {
                            System.out.println(" Offer failed due to back pressure for stream id " + STREAM_ID_1);
                        } else if (result1 == Publication.NOT_CONNECTED) {
                            System.out.println(" Offer failed because publisher is not yet " + "connected to subscriber for stream id " + STREAM_ID_1);
                        } else {
                            System.out.println(" Offer failed due to unexpected reason: " + result1);
                        }
                        offerStatus1 = false;
                    }
                }
                if (k <= 5000) {
                    result2 = publication2.offer(BUFFER_2, 0, BUFFER_2.capacity());
                    if (result2 > 0) {
                        k++;
                        offerStatus2 = true;
                        System.out.println("Successfully sent data on stream id " + STREAM_ID_2 + " and data length " + BUFFER_2.capacity() + " at offset " + result2);
                    } else {
                        if (result2 == Publication.BACK_PRESSURED) {
                            System.out.println(" Offer failed because publisher is not yet " + "connected to subscriber for stream id " + STREAM_ID_2);
                        } else if (result2 == Publication.NOT_CONNECTED) {
                            System.out.println("Offer failed - publisher is not yet connected to subscriber" + STREAM_ID_2);
                        } else {
                            System.out.println("Offer failed due to unexpected reason: " + result2);
                        }
                        offerStatus2 = false;
                    }
                }
            }
        }
        System.out.println("Done sending total messages for stream id " + STREAM_ID_1 + " = " + (j - 1) + " and stream id " + STREAM_ID_2 + " = " + (k - 1));
    }
}