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

Example 81 with Subscriber

use of org.reactivestreams.Subscriber in project mongo-java-driver by mongodb.

the class OperationExecutorImpl method execute.

@Override
public <T> Mono<T> execute(final AsyncReadOperation<T> operation, final ReadPreference readPreference, final ReadConcern readConcern, @Nullable final ClientSession session) {
    notNull("operation", operation);
    notNull("readPreference", readPreference);
    notNull("readConcern", readConcern);
    if (session != null) {
        session.notifyOperationInitiated(operation);
    }
    return Mono.from(subscriber -> clientSessionHelper.withClientSession(session, OperationExecutorImpl.this).map(clientSession -> getReadWriteBinding(getContext(subscriber), readPreference, readConcern, clientSession, session == null && clientSession != null)).switchIfEmpty(Mono.fromCallable(() -> getReadWriteBinding(getContext(subscriber), readPreference, readConcern, session, false))).flatMap(binding -> {
        if (session != null && session.hasActiveTransaction() && !binding.getReadPreference().equals(primary())) {
            binding.release();
            return Mono.error(new MongoClientException("Read preference in a transaction must be primary"));
        } else {
            return Mono.<T>create(sink -> operation.executeAsync(binding, (result, t) -> {
                try {
                    binding.release();
                } finally {
                    sinkToCallback(sink).onResult(result, t);
                }
            })).doOnError((t) -> {
                labelException(session, t);
                unpinServerAddressOnTransientTransactionError(session, t);
            });
        }
    }).subscribe(subscriber));
}

Example 82 with Subscriber

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

the class ProtonPublisherIntTest method doSubscriptionConfigTestImpl.

private void doSubscriptionConfigTestImpl(TestContext context, boolean durable, String linkName, boolean shared, boolean global) throws InterruptedException, ExecutionException {
    server.close();
    final Async clientLinkOpenAsync = context.async();
    final Async serverLinkOpenAsync = context.async();
    final Async clientLinkCloseAsync = context.async();
    ProtonServer protonServer = null;
    try {
        protonServer = createServer((serverConnection) -> {
            serverConnection.openHandler(result -> {
                serverConnection.open();
            });
            serverConnection.sessionOpenHandler(session -> session.open());
            serverConnection.senderOpenHandler(serverSender -> {
                serverSender.closeHandler(res -> {
                    context.assertFalse(durable, "unexpected link close for durable sub");
                    serverSender.close();
                });
                serverSender.detachHandler(res -> {
                    context.assertTrue(durable, "unexpected link detach for non-durable sub");
                    serverSender.detach();
                });
                LOG.trace("Server sender opened");
                serverSender.open();
                // Verify the link details used were as expected
                context.assertEquals(linkName, serverSender.getName(), "unexpected link name");
                context.assertNotNull(serverSender.getRemoteSource(), "source should not be null");
                org.apache.qpid.proton.amqp.messaging.Source source = (org.apache.qpid.proton.amqp.messaging.Source) serverSender.getRemoteSource();
                if (durable) {
                    context.assertEquals(TerminusExpiryPolicy.NEVER, source.getExpiryPolicy(), "unexpected expiry");
                    context.assertEquals(TerminusDurability.UNSETTLED_STATE, source.getDurable(), "unexpected durability");
                }
                Symbol[] capabilities = source.getCapabilities();
                if (shared && global) {
                    context.assertTrue(Arrays.equals(new Symbol[] { Symbol.valueOf("shared"), Symbol.valueOf("global") }, capabilities), "Unexpected capabilities: " + Arrays.toString(capabilities));
                } else if (shared) {
                    context.assertTrue(Arrays.equals(new Symbol[] { Symbol.valueOf("shared") }, capabilities), "Unexpected capabilities: " + Arrays.toString(capabilities));
                }
                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();
            // Create publisher with given link name
            ProtonPublisherOptions options = new ProtonPublisherOptions().setLinkName(linkName);
            if (durable) {
                options.setDurable(true);
            }
            if (shared) {
                options.setShared(true);
            }
            if (global) {
                options.setGlobal(true);
            }
            ProtonPublisher<Delivery> publisher = ProtonStreams.createDeliveryConsumer(connection, "myAddress", options);
            publisher.subscribe(new Subscriber<Delivery>() {

                Subscription sub = null;

                @Override
                public void onSubscribe(Subscription s) {
                    clientLinkOpenAsync.complete();
                    sub = s;
                    s.request(1);
                    sub.cancel();
                }

                @Override
                public void onNext(Delivery e) {
                }

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

                @Override
                public void onComplete() {
                    clientLinkCloseAsync.complete();
                }
            });
        });
        serverLinkOpenAsync.awaitSuccess();
        clientLinkOpenAsync.awaitSuccess();
        clientLinkCloseAsync.awaitSuccess();
    } finally {
        if (protonServer != null) {
            protonServer.close();
        }
    }
}

Example 83 with Subscriber

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

the class ProtonPublisherIntTest method testMaxOutstandingCredit1.

@Test(timeout = 20000)
public void testMaxOutstandingCredit1(TestContext context) throws Exception {
    server.close();
    final int maxOutstanding = 1000;
    final int amount1 = 15;
    final int amount2 = 1100;
    final int totalRequests = amount1 + amount2;
    final Async receivedCreditAsync = context.async();
    final Async verifiedCreditAsync = context.async();
    final Async receivedCreditAsync2 = context.async();
    final Async receivedMessages = context.async();
    List<Integer> credits = new ArrayList<>();
    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);
                    credits.add(credit);
                    if (credit > maxOutstanding) {
                        context.fail("Received unexpected amount of credit: " + credit);
                    } else if (credit == maxOutstanding) {
                        LOG.trace("Server reached max outstanding: " + credit);
                        receivedCreditAsync.complete();
                        verifiedCreditAsync.await();
                        while (!serverSender.sendQueueFull()) {
                            serverSender.send(message(String.valueOf(msgNum.incrementAndGet())));
                        }
                        return;
                    } else if (receivedCreditAsync.isCompleted()) {
                        LOG.trace("Server received topup credit, post-max-outstanding: " + credit);
                        receivedCreditAsync2.complete();
                        while (!serverSender.sendQueueFull()) {
                            serverSender.send(message(String.valueOf(msgNum.incrementAndGet())));
                        }
                    }
                });
            });
        });
        // ===== 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>() {

                Subscription sub = null;

                @Override
                public void onSubscribe(Subscription s) {
                    LOG.trace("Flowing initial credit");
                    sub = s;
                    sub.request(amount1);
                    vertx.setTimer(250, x -> {
                        LOG.trace("Granting additional credit");
                        sub.request(amount2);
                    });
                }

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

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

                @Override
                public void onComplete() {
                    context.fail("onComplete called");
                }
            });
        });
        receivedCreditAsync.awaitSuccess();
        // Verify the requests were all received as expected
        context.assertEquals(credits.size(), 2, "Unexpected credits count");
        context.assertEquals(credits.get(0), amount1, "Unexpected credit 1");
        context.assertEquals(credits.get(1), maxOutstanding, "Unexpected credit 2");
        verifiedCreditAsync.complete();
        receivedCreditAsync2.awaitSuccess();
        // Verify the requests were all received as expected
        context.assertEquals(credits.size(), 3, "Unexpected credits count");
        context.assertEquals(credits.get(2), amount1 + amount2 - maxOutstanding, "Unexpected credit 3");
        receivedMessages.awaitSuccess();
    } finally {
        if (protonServer != null) {
            protonServer.close();
        }
    }
}

Example 84 with Subscriber

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

the class ProtonPublisherIntTest method testManualAccept.

@Test(timeout = 20000)
public void testManualAccept(TestContext context) throws Exception {
    server.close();
    final Async receivedMessagesAsync = context.async();
    final Async ackedMessagesAsync = context.async();
    int messageCount = 5;
    List<Integer> accepted = 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);
                            if (del.getRemoteState() instanceof Accepted) {
                                accepted.add(j);
                                if (accepted.size() == messageCount) {
                                    ackedMessagesAsync.complete();
                                }
                            } else {
                                context.fail("Expected message to be accepted");
                            }
                        });
                    }
                });
            });
        });
        // ===== 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 accepted yet
        context.assertTrue(accepted.isEmpty(), "Unexpected accepted count");
        // Accept them all
        for (Delivery d : deliveries) {
            d.accept();
        }
        ackedMessagesAsync.awaitSuccess();
    } finally {
        if (protonServer != null) {
            protonServer.close();
        }
    }
    // Verify the messages were all accepted
    context.assertEquals(accepted.size(), messageCount, "Unexpected accepted count");
    for (int i = 1; i <= messageCount; i++) {
        // Verify each accepted number, establish correct order etc.
        context.assertEquals(accepted.remove(0), i, "Unexpected msgNum");
    }
}

Example 85 with Subscriber

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

the class ProtonPublisherIntTest method testConfigureSubscriptionDynamic.

@Test(timeout = 20000)
public void testConfigureSubscriptionDynamic(TestContext context) throws Exception {
    server.close();
    final Async clientLinkOpenAsync = context.async();
    final Async serverLinkOpenAsync = context.async();
    final Async clientLinkCloseAsync = context.async();
    final String dynamicAddress = "testConfigureSubscriptionDynamic:" + UUID.randomUUID();
    ProtonServer protonServer = null;
    try {
        protonServer = createServer((serverConnection) -> {
            serverConnection.openHandler(result -> {
                serverConnection.open();
            });
            serverConnection.sessionOpenHandler(session -> session.open());
            serverConnection.senderOpenHandler(serverSender -> {
                serverSender.closeHandler(res -> {
                    serverSender.close();
                });
                // Verify the remote terminus details used were as expected
                context.assertNotNull(serverSender.getRemoteSource(), "source should not be null");
                org.apache.qpid.proton.amqp.messaging.Source remoteSource = (org.apache.qpid.proton.amqp.messaging.Source) serverSender.getRemoteSource();
                context.assertTrue(remoteSource.getDynamic(), "expected dynamic source");
                context.assertNull(remoteSource.getAddress(), "expected no source address");
                // Set the local terminus details
                org.apache.qpid.proton.amqp.messaging.Source source = (org.apache.qpid.proton.amqp.messaging.Source) remoteSource.copy();
                source.setAddress(dynamicAddress);
                serverSender.setSource(source);
                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();
            // Create publisher with dynamic option
            ProtonPublisherOptions options = new ProtonPublisherOptions().setDynamic(true);
            ProtonPublisher<Delivery> publisher = ProtonStreams.createDeliveryConsumer(connection, null, options);
            publisher.subscribe(new Subscriber<Delivery>() {

                Subscription sub = null;

                @Override
                public void onSubscribe(Subscription s) {
                    // Verify the remote address detail
                    context.assertEquals(dynamicAddress, publisher.getRemoteAddress(), "unexpected remote address");
                    // Grab and verify the source details
                    org.apache.qpid.proton.amqp.messaging.Source remoteSource = (org.apache.qpid.proton.amqp.messaging.Source) publisher.getRemoteSource();
                    context.assertTrue(remoteSource.getDynamic(), "expected dynamic source");
                    context.assertEquals(dynamicAddress, remoteSource.getAddress(), "unexpected source address");
                    clientLinkOpenAsync.complete();
                    sub = s;
                    s.request(1);
                    sub.cancel();
                }

                @Override
                public void onNext(Delivery e) {
                }

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

                @Override
                public void onComplete() {
                    clientLinkCloseAsync.complete();
                }
            });
        });
        serverLinkOpenAsync.awaitSuccess();
        clientLinkOpenAsync.awaitSuccess();
        clientLinkCloseAsync.awaitSuccess();
    } finally {
        if (protonServer != null) {
            protonServer.close();
        }
    }
}