Examples with Completable io.servicetalk.concurrent.api.Completable used on opensource projects

Example 11 with Completable

use of io.servicetalk.concurrent.api.Completable in project servicetalk by apple.

the class TimeoutPublisherTest method concurrentTimeoutInvocation.

@Test
void concurrentTimeoutInvocation() throws InterruptedException {
    CountDownLatch latch = new CountDownLatch(2);
    AtomicReference<Throwable> causeRef = new AtomicReference<>();
    // In order to simulate concurrent execution, we introduce an Executor that does not respect the delay for the
    // first timer schedule. Internally, we expect the TimeoutPublisher to reschedule the timer. For that we use
    // TestExecutor, which will allow us to advance the time and trigger the actual timeout, which will simulate
    // concurrent execution.
    toSource(publisher.timeout(10, MILLISECONDS, new Executor() {

        private final AtomicInteger timerCount = new AtomicInteger();

        @Override
        public Cancellable schedule(final Runnable task, final long delay, final TimeUnit unit) {
            int count = timerCount.incrementAndGet();
            if (count <= 2) {
                if (count == 1) {
                    try {
                        task.run();
                    } catch (Throwable cause) {
                        causeRef.compareAndSet(null, cause);
                        countDownToZero(latch);
                    }
                    latch.countDown();
                } else {
                    try {
                        try {
                            testExecutor.schedule(task, delay, unit);
                            testExecutor.advanceTimeBy(delay, unit);
                        } catch (Throwable cause) {
                            causeRef.compareAndSet(null, cause);
                            countDownToZero(latch);
                        }
                        latch.countDown();
                    } catch (Throwable cause) {
                        causeRef.compareAndSet(null, cause);
                        countDownToZero(latch);
                    }
                }
            }
            return IGNORE_CANCEL;
        }

        @Override
        public long currentTime(final TimeUnit unit) {
            return testExecutor.currentTime(unit);
        }

        @Override
        public Completable closeAsync() {
            throw new UnsupportedOperationException();
        }

        @Override
        public Completable onClose() {
            throw new UnsupportedOperationException();
        }

        @Override
        public Cancellable execute(final Runnable task) throws RejectedExecutionException {
            throw new UnsupportedOperationException();
        }
    })).subscribe(subscriber);
    latch.await();
    assertNull(causeRef.get());
    assertThat(subscriber.awaitOnError(), instanceOf(TimeoutException.class));
}

Example 12 with Completable

use of io.servicetalk.concurrent.api.Completable in project servicetalk by apple.

the class BackendsStarter method main.

public static void main(String[] args) throws Exception {
    // Create an AutoCloseable representing all resources used in this example.
    try (CompositeCloseable resources = newCompositeCloseable()) {
        // Shared IoExecutor for the application.
        IoExecutor ioExecutor = resources.prepend(createIoExecutor());
        // This is a single Completable used to await closing of all backends started by this class. It is used to
        // provide a way to not let main() exit.
        Completable allServicesOnClose = completed();
        BackendStarter starter = new BackendStarter(ioExecutor, resources);
        final ServerContext recommendationService = starter.start(RECOMMENDATIONS_BACKEND_ADDRESS.port(), RECOMMENDATION_SERVICE_NAME, newRecommendationsService());
        allServicesOnClose = allServicesOnClose.merge(recommendationService.onClose());
        final ServerContext metadataService = starter.start(METADATA_BACKEND_ADDRESS.port(), METADATA_SERVICE_NAME, newMetadataService());
        allServicesOnClose = allServicesOnClose.merge(metadataService.onClose());
        final ServerContext userService = starter.start(USER_BACKEND_ADDRESS.port(), USER_SERVICE_NAME, newUserService());
        allServicesOnClose = allServicesOnClose.merge(userService.onClose());
        final ServerContext ratingService = starter.start(RATINGS_BACKEND_ADDRESS.port(), RATING_SERVICE_NAME, newRatingService());
        allServicesOnClose = allServicesOnClose.merge(ratingService.onClose());
        // Await termination of all backends started by this class.
        allServicesOnClose.toFuture().get();
    }
}

Example 13 with Completable

use of io.servicetalk.concurrent.api.Completable in project servicetalk by apple.

the class HttpRequestEncoderTest method protocolPayloadEndOutboundShouldNotTriggerOnFailedFlush.

@Test
void protocolPayloadEndOutboundShouldNotTriggerOnFailedFlush() throws Exception {
    AtomicReference<CloseHandler> closeHandlerRef = new AtomicReference<>();
    try (CompositeCloseable resources = newCompositeCloseable()) {
        Processor serverCloseTrigger = newCompletableProcessor();
        CountDownLatch serverChannelLatch = new CountDownLatch(1);
        AtomicReference<Channel> serverChannelRef = new AtomicReference<>();
        ReadOnlyTcpServerConfig sConfig = new TcpServerConfig().asReadOnly();
        ServerContext serverContext = resources.prepend(TcpServerBinder.bind(localAddress(0), sConfig, false, SEC, null, (channel, observer) -> DefaultNettyConnection.initChannel(channel, SEC.bufferAllocator(), SEC.executor(), SEC.ioExecutor(), forPipelinedRequestResponse(false, channel.config()), defaultFlushStrategy(), 0L, null, new TcpServerChannelInitializer(sConfig, observer).andThen(channel2 -> {
            serverChannelRef.compareAndSet(null, channel2);
            serverChannelLatch.countDown();
        }), defaultStrategy(), mock(Protocol.class), observer, false, __ -> false), connection -> {
        }).toFuture().get());
        ReadOnlyHttpClientConfig cConfig = new HttpClientConfig().asReadOnly();
        assert cConfig.h1Config() != null;
        NettyConnection<Object, Object> conn = resources.prepend(TcpConnector.connect(null, serverHostAndPort(serverContext), cConfig.tcpConfig(), false, CEC, (channel, connectionObserver) -> {
            CloseHandler closeHandler = spy(forPipelinedRequestResponse(true, channel.config()));
            closeHandlerRef.compareAndSet(null, closeHandler);
            return DefaultNettyConnection.initChannel(channel, CEC.bufferAllocator(), CEC.executor(), CEC.ioExecutor(), closeHandler, defaultFlushStrategy(), 0L, cConfig.tcpConfig().sslConfig(), new TcpClientChannelInitializer(cConfig.tcpConfig(), connectionObserver).andThen(new HttpClientChannelInitializer(getByteBufAllocator(CEC.bufferAllocator()), cConfig.h1Config(), closeHandler)).andThen(channel2 -> channel2.pipeline().addLast(new ChannelInboundHandlerAdapter() {

                @Override
                public void userEventTriggered(ChannelHandlerContext ctx, Object evt) {
                    // Propagate the user event in the pipeline before
                    // triggering the test condition.
                    ctx.fireUserEventTriggered(evt);
                    if (evt instanceof ChannelInputShutdownReadComplete) {
                        serverCloseTrigger.onComplete();
                    }
                }
            })), defaultStrategy(), HTTP_1_1, connectionObserver, true, __ -> false);
        }, NoopTransportObserver.INSTANCE).toFuture().get());
        // The server needs to wait to close the conneciton until after the client has established the connection.
        serverChannelLatch.await();
        Channel serverChannel = serverChannelRef.get();
        assertNotNull(serverChannel);
        assumeFalse(serverChannel instanceof NioSocketChannel, "Windows doesn't emit ChannelInputShutdownReadComplete. Investigation Required.");
        ((SocketChannel) serverChannel).config().setSoLinger(0);
        // Close and send RST concurrently with client write
        serverChannel.close();
        StreamingHttpRequest request = reqRespFactory.post("/closeme");
        fromSource(serverCloseTrigger).toFuture().get();
        Completable write = conn.write(from(request, allocator.fromAscii("Bye"), EmptyHttpHeaders.INSTANCE));
        assertThrows(ExecutionException.class, () -> write.toFuture().get());
        CloseHandler closeHandler = closeHandlerRef.get();
        assertNotNull(closeHandler);
        verify(closeHandler, never()).protocolPayloadEndOutbound(any(), any());
    }
}

Example 14 with Completable

use of io.servicetalk.concurrent.api.Completable in project servicetalk by apple.

the class HttpPredicateRouterBuilderTest method testCloseAsyncClosesAllServicesWhenFirstOneIsError.

@Test
void testCloseAsyncClosesAllServicesWhenFirstOneIsError() throws Exception {
    when(serviceA.closeAsync()).thenReturn(failCompletable);
    when(serviceB.closeAsync()).thenReturn(completableB);
    when(serviceC.closeAsync()).thenReturn(completableC);
    final StreamingHttpService service = new HttpPredicateRouterBuilder().whenMethod(GET).thenRouteTo(serviceA).whenMethod(POST).thenRouteTo(serviceB).when((ctx, req) -> true).thenRouteTo(serviceC).buildStreaming();
    try {
        final Completable completable = service.closeAsync();
        completable.toFuture().get();
        Assertions.fail("Expected an exception from `await`");
    } catch (final ExecutionException e) {
        assertSame(DELIBERATE_EXCEPTION, e.getCause());
    }
    verify(serviceA).closeAsync();
    verify(serviceB).closeAsync();
    verify(serviceC).closeAsync();
    failCompletable.verifyNotCancelled();
    completableB.verifyNotCancelled();
    completableC.verifyNotCancelled();
    failCompletable.verifyListenCalled();
    completableB.verifyListenCalled();
    completableC.verifyListenCalled();
}

Example 15 with Completable

use of io.servicetalk.concurrent.api.Completable in project servicetalk by apple.

the class GracefulConnectionClosureHandlingTest method setUp.

void setUp(HttpProtocol protocol, boolean initiateClosureFromClient, boolean useUds, boolean viaProxy) throws Exception {
    this.protocol = protocol;
    this.initiateClosureFromClient = initiateClosureFromClient;
    if (useUds) {
        Assumptions.assumeTrue(SERVER_CTX.ioExecutor().isUnixDomainSocketSupported(), "Server's IoExecutor does not support UnixDomainSocket");
        Assumptions.assumeTrue(CLIENT_CTX.ioExecutor().isUnixDomainSocketSupported(), "Client's IoExecutor does not support UnixDomainSocket");
        assumeFalse(viaProxy, "UDS cannot be used via proxy");
    }
    assumeFalse(protocol == HTTP_2 && viaProxy, "Proxy is not supported with HTTP/2");
    HttpServerBuilder serverBuilder = (useUds ? forAddress(newSocketAddress()) : forAddress(localAddress(0))).protocols(protocol.config).ioExecutor(SERVER_CTX.ioExecutor()).executor(SERVER_CTX.executor()).executionStrategy(defaultStrategy()).enableWireLogging("servicetalk-tests-wire-logger", TRACE, () -> true).appendConnectionAcceptorFilter(original -> new DelegatingConnectionAcceptor(original) {

        @Override
        public Completable accept(final ConnectionContext context) {
            if (!initiateClosureFromClient) {
                ((NettyConnectionContext) context).onClosing().whenFinally(onClosing::countDown).subscribe();
            }
            context.onClose().whenFinally(serverConnectionClosed::countDown).subscribe();
            connectionAccepted.countDown();
            return completed();
        }
    });
    HostAndPort proxyAddress = null;
    if (viaProxy) {
        // Dummy proxy helps to emulate old intermediate systems that do not support half-closed TCP connections
        proxyTunnel = new ProxyTunnel();
        proxyAddress = proxyTunnel.startProxy();
        serverBuilder.sslConfig(new ServerSslConfigBuilder(DefaultTestCerts::loadServerPem, DefaultTestCerts::loadServerKey).build());
    } else {
        proxyTunnel = null;
    }
    serverContext = serverBuilder.listenBlockingStreamingAndAwait((ctx, request, response) -> {
        serverReceivedRequest.countDown();
        response.addHeader(CONTENT_LENGTH, valueOf(RESPONSE_CONTENT.length()));
        serverSendResponse.await();
        try (HttpPayloadWriter<String> writer = response.sendMetaData(RAW_STRING_SERIALIZER)) {
            // Subscribe to the request payload body before response writer closes
            BlockingIterator<Buffer> iterator = request.payloadBody().iterator();
            // Consume request payload body asynchronously:
            ctx.executionContext().executor().submit(() -> {
                int receivedSize = 0;
                while (iterator.hasNext()) {
                    Buffer chunk = iterator.next();
                    assert chunk != null;
                    receivedSize += chunk.readableBytes();
                }
                serverReceivedRequestPayload.add(receivedSize);
            }).beforeOnError(cause -> {
                LOGGER.error("failure while reading request", cause);
                serverReceivedRequestPayload.add(-1);
            }).toFuture();
            serverSendResponsePayload.await();
            writer.write(RESPONSE_CONTENT);
        }
    });
    serverContext.onClose().whenFinally(serverContextClosed::countDown).subscribe();
    client = (viaProxy ? forSingleAddress(serverHostAndPort(serverContext)).proxyAddress(proxyAddress).sslConfig(new ClientSslConfigBuilder(DefaultTestCerts::loadServerCAPem).peerHost(serverPemHostname()).build()) : forResolvedAddress(serverContext.listenAddress())).protocols(protocol.config).executor(CLIENT_CTX.executor()).ioExecutor(CLIENT_CTX.ioExecutor()).executionStrategy(defaultStrategy()).enableWireLogging("servicetalk-tests-wire-logger", TRACE, Boolean.TRUE::booleanValue).appendConnectionFactoryFilter(ConnectionFactoryFilter.withStrategy(cf -> initiateClosureFromClient ? new OnClosingConnectionFactoryFilter<>(cf, onClosing) : cf, ExecutionStrategy.offloadNone())).buildStreaming();
    connection = client.reserveConnection(client.get("/")).toFuture().get();
    connection.onClose().whenFinally(clientConnectionClosed::countDown).subscribe();
    // wait until server accepts connection
    connectionAccepted.await();
    toClose = initiateClosureFromClient ? connection : serverContext;
}