Examples with Subscriber org.reactivestreams.Subscriber used on opensource projects

Example 86 with Subscriber

use of org.reactivestreams.Subscriber in project vertx-proton by vert-x3.

the class ProtonPublisherIntTest method testMaxOutstandingCredit2.

@Test(timeout = 20000)
public void testMaxOutstandingCredit2(TestContext context) throws Exception {
    server.close();
    final int maxOutstandingCredit = 20;
    final int totalRequests = 107;
    final Async receivedMessagesAsync = context.async();
    AtomicInteger receivedCredits = new AtomicInteger();
    AtomicInteger maxCredits = new AtomicInteger();
    AtomicInteger counter = new AtomicInteger();
    ProtonServer protonServer = null;
    try {
        protonServer = createServer((serverConnection) -> {
            serverConnection.openHandler(result -> {
                serverConnection.open();
            });
            serverConnection.sessionOpenHandler(session -> session.open());
            serverConnection.senderOpenHandler(serverSender -> {
                LOG.trace("Server sender opened");
                serverSender.open();
                AtomicInteger msgNum = new AtomicInteger();
                serverSender.sendQueueDrainHandler(s -> {
                    int credit = serverSender.getCredit();
                    LOG.trace("Server credit: " + credit);
                    int max = maxCredits.get();
                    if (credit > max) {
                        maxCredits.compareAndSet(max, credit);
                    }
                    while (!serverSender.sendQueueFull()) {
                        serverSender.send(message(String.valueOf(msgNum.incrementAndGet())));
                    }
                    // Simple count, only works because of the thread model and using all credits as received
                    receivedCredits.addAndGet(credit);
                });
            });
        });
        // ===== Client Handling =====
        ProtonClient client = ProtonClient.create(vertx);
        client.connect("localhost", protonServer.actualPort(), res -> {
            context.assertTrue(res.succeeded());
            ProtonConnection connection = res.result();
            connection.open();
            // Create publisher with set maxOutstanding
            ProtonPublisherOptions options = new ProtonPublisherOptions().setMaxOutstandingCredit(maxOutstandingCredit);
            ProtonPublisher<Delivery> publisher = ProtonStreams.createDeliveryConsumer(connection, "myAddress", options);
            publisher.subscribe(new Subscriber<Delivery>() {

                Subscription sub = null;

                @Override
                public void onSubscribe(Subscription s) {
                    LOG.trace("Flowing initial credit");
                    sub = s;
                    sub.request(totalRequests);
                }

                @Override
                public void onNext(Delivery d) {
                    int count = counter.incrementAndGet();
                    validateMessage(context, count, String.valueOf(count), d.message());
                    if (count >= totalRequests) {
                        receivedMessagesAsync.complete();
                    }
                }

                @Override
                public void onError(Throwable t) {
                    if (!receivedMessagesAsync.isCompleted()) {
                        context.fail("onError called");
                    }
                }

                @Override
                public void onComplete() {
                    context.fail("onComplete called");
                }
            });
        });
        // Verify the max outstanding was honoured and messages were all received as expected
        receivedMessagesAsync.awaitSuccess();
        context.assertEquals(maxCredits.get(), maxOutstandingCredit, "Unexpected max credit");
        context.assertEquals(receivedCredits.get(), totalRequests, "Unexpected total credits received");
    } finally {
        if (protonServer != null) {
            protonServer.close();
        }
    }
}

Example 87 with Subscriber

use of org.reactivestreams.Subscriber in project vertx-proton by vert-x3.

the class ProtonPublisherIntTest method testAlternativeDispositionStates.

@Test(timeout = 20000)
public void testAlternativeDispositionStates(TestContext context) throws Exception {
    server.close();
    final Async receivedMessagesAsync = context.async();
    final Async ackedMessagesAsync = context.async();
    int messageCount = 4;
    List<DeliveryState> deliveryStates = Collections.synchronizedList(new ArrayList<>());
    List<Delivery> deliveries = Collections.synchronizedList(new ArrayList<>());
    AtomicInteger msgNum = new AtomicInteger(1);
    ProtonServer protonServer = null;
    try {
        protonServer = createServer((serverConnection) -> {
            serverConnection.openHandler(result -> {
                serverConnection.open();
            });
            serverConnection.sessionOpenHandler(session -> session.open());
            serverConnection.senderOpenHandler(serverSender -> {
                LOG.trace("Server sender opened");
                serverSender.open();
                serverSender.sendQueueDrainHandler(s -> {
                    for (int i = msgNum.get(); i <= messageCount; i = msgNum.incrementAndGet()) {
                        int j = i;
                        serverSender.send(message(String.valueOf(i)), del -> {
                            LOG.trace("Server received disposition for msg: " + j);
                            DeliveryState state = del.getRemoteState();
                            context.assertNotNull(state, "Expected message to have a delivery state");
                            deliveryStates.add(state);
                            if (deliveryStates.size() == messageCount) {
                                ackedMessagesAsync.complete();
                            }
                        });
                    }
                });
            });
        });
        // ===== Client Handling =====
        AtomicInteger counter = new AtomicInteger(0);
        ProtonClient client = ProtonClient.create(vertx);
        client.connect("localhost", protonServer.actualPort(), res -> {
            context.assertTrue(res.succeeded());
            ProtonConnection connection = res.result();
            // Create consumer stream of Delivery, which must be manually accepted
            ProtonPublisher<Delivery> publisher = ProtonStreams.createDeliveryConsumer(connection, "myAddress");
            publisher.subscribe(new Subscriber<Delivery>() {

                Subscription sub = null;

                @Override
                public void onSubscribe(Subscription s) {
                    sub = s;
                    LOG.trace("Flowing initial credit");
                    sub.request(messageCount);
                }

                @Override
                public void onNext(Delivery d) {
                    int count = counter.incrementAndGet();
                    deliveries.add(d);
                    if (count == messageCount) {
                        LOG.trace("Got all messages, completing async");
                        receivedMessagesAsync.complete();
                    }
                }

                @Override
                public void onError(Throwable t) {
                    if (!receivedMessagesAsync.isCompleted()) {
                        context.fail("onError called");
                    }
                }

                @Override
                public void onComplete() {
                    context.fail("onComplete called");
                }
            });
            connection.open();
        });
        receivedMessagesAsync.awaitSuccess();
        // Small delay to ensure there is a window for any
        // unexpected automatic accept to occur
        Thread.sleep(50);
        // Verify no messages acked yet
        context.assertTrue(deliveryStates.isEmpty(), "Unexpected acks count");
        // Ack them all
        deliveries.get(0).disposition(Accepted.getInstance(), true);
        deliveries.get(1).disposition(Released.getInstance(), true);
        deliveries.get(2).disposition(new Rejected(), true);
        deliveries.get(3).disposition(new Modified(), true);
        ackedMessagesAsync.awaitSuccess();
    } finally {
        if (protonServer != null) {
            protonServer.close();
        }
    }
    // Verify the messages were all acked as expected
    context.assertEquals(deliveryStates.size(), messageCount, "Unexpected state count: " + deliveryStates);
    context.assertTrue(deliveryStates.get(0) instanceof Accepted, "Unexpected state: " + deliveryStates.get(0));
    context.assertTrue(deliveryStates.get(1) instanceof Released, "Unexpected state: " + deliveryStates.get(1));
    context.assertTrue(deliveryStates.get(2) instanceof Rejected, "Unexpected state: " + deliveryStates.get(2));
    context.assertTrue(deliveryStates.get(3) instanceof Modified, "Unexpected state: " + deliveryStates.get(3));
}

Example 88 with Subscriber

use of org.reactivestreams.Subscriber in project vertx-proton by vert-x3.

the class ProtonPublisherIntTest method testSubscriberErrorOnConnectionEnd.

@Test(timeout = 20000)
public void testSubscriberErrorOnConnectionEnd(TestContext context) throws Exception {
    server.close();
    final Async clientLinkOpenAsync = context.async();
    final Async serverLinkOpenAsync = context.async();
    final Async subErroredAsync = context.async();
    ProtonServer protonServer = null;
    try {
        protonServer = createServer((serverConnection) -> {
            serverConnection.openHandler(result -> {
                serverConnection.open();
            });
            serverConnection.sessionOpenHandler(session -> session.open());
            serverConnection.senderOpenHandler(serverSender -> {
                LOG.trace("Server sender opened");
                serverSender.open();
                serverLinkOpenAsync.complete();
            });
        });
        // ===== Client Handling =====
        ProtonClient client = ProtonClient.create(vertx);
        client.connect("localhost", protonServer.actualPort(), res -> {
            context.assertTrue(res.succeeded());
            ProtonConnection connection = res.result();
            connection.open();
            ProtonPublisher<Delivery> publisher = ProtonStreams.createDeliveryConsumer(connection, "myAddress");
            publisher.subscribe(new Subscriber<Delivery>() {

                @Override
                public void onSubscribe(Subscription s) {
                    clientLinkOpenAsync.complete();
                }

                @Override
                public void onNext(Delivery e) {
                    context.fail("onNext called");
                }

                @Override
                public void onError(Throwable t) {
                    LOG.trace("onError called");
                    subErroredAsync.complete();
                }

                @Override
                public void onComplete() {
                    LOG.trace("onComplete called");
                    context.fail("onComplete called");
                }
            });
        });
        serverLinkOpenAsync.awaitSuccess();
        clientLinkOpenAsync.awaitSuccess();
        context.assertFalse(subErroredAsync.isCompleted());
        protonServer.close();
        protonServer = null;
        subErroredAsync.awaitSuccess();
    } finally {
        if (protonServer != null) {
            protonServer.close();
        }
    }
}

Example 89 with Subscriber

use of org.reactivestreams.Subscriber in project vertx-proton by vert-x3.

the class ProtonPublisherIntTest method testDelayedInitialRequest.

@Test(timeout = 20000)
public void testDelayedInitialRequest(TestContext context) {
    Async async = context.async();
    connect(context, connection -> {
        connection.open();
        AtomicInteger counter = new AtomicInteger(0);
        AtomicBoolean initialCreditGranted = new AtomicBoolean();
        AtomicBoolean additionalCreditGranted = new AtomicBoolean();
        final int delay = 250;
        final long startTime = System.currentTimeMillis();
        ProtonPublisher<Delivery> publisher = ProtonStreams.createDeliveryConsumer(connection, "two_messages");
        publisher.subscribe(new Subscriber<Delivery>() {

            Subscription sub = null;

            @Override
            public void onSubscribe(Subscription s) {
                vertx.setTimer(delay, x -> {
                    LOG.trace("Flowing initial credit");
                    initialCreditGranted.set(true);
                    sub = s;
                    sub.request(1);
                });
            }

            @Override
            public void onNext(Delivery d) {
                int count = counter.incrementAndGet();
                switch(count) {
                    case 1:
                        {
                            validateMessage(context, count, String.valueOf(count), d.message());
                            context.assertTrue(initialCreditGranted.get(), "Initial credit not yet granted, so we" + " should not have received message 1 yet!");
                            // Verify lack of initial credit results in delayed receipt of first message.
                            context.assertTrue(System.currentTimeMillis() > startTime + delay, "Message received before expected time delay elapsed!");
                            LOG.trace("Got msg 1");
                            // We only issued 1 credit, so we should not get more
                            // messages until more credit is flowed, use the
                            // callback for this msg to do that after further delay
                            vertx.setTimer(delay, x -> {
                                LOG.trace("Granting additional credit");
                                additionalCreditGranted.set(true);
                                sub.request(1);
                            });
                            break;
                        }
                    case 2:
                        {
                            validateMessage(context, count, String.valueOf(count), d.message());
                            context.assertTrue(additionalCreditGranted.get(), "Additional credit not yet granted, so we" + " should not have received message " + count + " yet!");
                            context.assertTrue(System.currentTimeMillis() > startTime + (delay * 2), "Message received before expected time delay elapsed!");
                            // Got the last message, lets finish the test.
                            LOG.trace("Got msg 2, completing async");
                            async.complete();
                            connection.disconnect();
                            break;
                        }
                }
            }

            @Override
            public void onError(Throwable t) {
                if (!async.isCompleted()) {
                    context.fail("onError called");
                }
            }

            @Override
            public void onComplete() {
                context.fail("onComplete called");
            }
        });
    });
}

Example 90 with Subscriber

use of org.reactivestreams.Subscriber in project vertx-proton by vert-x3.

the class TrackerSubscriberBlackboxVerificationTckTest method createSubscriber.

@Override
public Subscriber<Tracker> createSubscriber() {
    int actualPort = server.actualPort();
    ProtonClient client = ProtonClient.create(vertx);
    AtomicReference<Subscriber<Tracker>> ref = new AtomicReference<>();
    CountDownLatch latch = new CountDownLatch(1);
    client.connect("localhost", actualPort, result -> {
        if (result.succeeded()) {
            ProtonConnection conn = result.result();
            conn.open();
            ProtonSubscriber<Tracker> stream = ProtonStreams.createTrackerProducer(conn, "myAddress");
            ((ProtonSubscriberImpl) stream).setEmitOnConnectionEnd(false);
            ref.set(stream);
        } else {
            LOG.error("Connection failed");
        }
        latch.countDown();
    });
    try {
        LOG.trace("Awaiting connection");
        boolean res = latch.await(2, TimeUnit.SECONDS);
        LOG.trace("Client connected: " + res);
    } catch (InterruptedException e) {
        throw new RuntimeException("Interrupted while creating subscriber", e);
    }
    return ref.get();
}