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

Example 21 with Publisher

use of org.reactivestreams.Publisher in project quasar by puniverse.

the class TestHelper method createDummyFailedPublisher.

public static <T> Publisher<T> createDummyFailedPublisher() {
    return new Publisher<T>() {

        @Override
        public void subscribe(Subscriber<? super T> s) {
            s.onSubscribe(new Subscription() {

                @Override
                public void request(long n) {
                }

                @Override
                public void cancel() {
                }
            });
            s.onError(new RuntimeException("Can't subscribe subscriber: " + s + ", because of reasons."));
        }
    };
}

Example 22 with Publisher

use of org.reactivestreams.Publisher in project quasar by puniverse.

the class TwoSidedTest method twoSidedTest.

@Test
public void twoSidedTest() throws Exception {
    // Publisher
    final Channel<Integer> publisherChannel = Channels.newChannel(random() ? 0 : 5, OverflowPolicy.BLOCK);
    final Strand publisherStrand = new Fiber<Void>(new SuspendableRunnable() {

        @Override
        public void run() throws SuspendExecution, InterruptedException {
            for (long i = 0; i < ELEMENTS; i++) publisherChannel.send((int) (i % 1000));
            publisherChannel.close();
        }
    }).start();
    final Publisher publisher = ReactiveStreams.toPublisher(publisherChannel);
    // Subscriber
    final ReceivePort<Integer> subscriberChannel = ReactiveStreams.subscribe(buffer, overflowPolicy, publisher);
    final Strand subscriberStrand = new Fiber<Void>(new SuspendableRunnable() {

        @Override
        public void run() throws SuspendExecution, InterruptedException {
            long count = 0;
            for (; ; ) {
                Integer x = subscriberChannel.receive();
                if (x == null)
                    break;
                assertEquals(count % 1000, x.longValue());
                count++;
            }
            subscriberChannel.close();
            assertEquals(ELEMENTS, count);
        }
    }).start();
    subscriberStrand.join(5, TimeUnit.SECONDS);
    publisherStrand.join(5, TimeUnit.SECONDS);
}

Example 23 with Publisher

use of org.reactivestreams.Publisher in project spring-framework by spring-projects.

the class BodyExtractors method readWithMessageReaders.

private static <T, S extends Publisher<T>> S readWithMessageReaders(ReactiveHttpInputMessage inputMessage, BodyExtractor.Context context, ResolvableType elementType, Function<HttpMessageReader<T>, S> readerFunction, Function<Throwable, S> unsupportedError) {
    MediaType contentType = contentType(inputMessage);
    Supplier<Stream<HttpMessageReader<?>>> messageReaders = context.messageReaders();
    return messageReaders.get().filter(r -> r.canRead(elementType, contentType)).findFirst().map(BodyExtractors::<T>cast).map(readerFunction).orElseGet(() -> {
        List<MediaType> supportedMediaTypes = messageReaders.get().flatMap(reader -> reader.getReadableMediaTypes().stream()).collect(Collectors.toList());
        UnsupportedMediaTypeException error = new UnsupportedMediaTypeException(contentType, supportedMediaTypes);
        return unsupportedError.apply(error);
    });
}

Example 24 with Publisher

use of org.reactivestreams.Publisher in project spring-framework by spring-projects.

the class DispatcherHandlerErrorTests method requestBodyError.

@Test
public void requestBodyError() throws Exception {
    ServerWebExchange exchange = MockServerHttpRequest.post("/request-body").body(Mono.error(EXCEPTION)).toExchange();
    Mono<Void> publisher = this.dispatcherHandler.handle(exchange);
    StepVerifier.create(publisher).consumeErrorWith(error -> {
        assertThat(error, instanceOf(ServerWebInputException.class));
        assertSame(EXCEPTION, error.getCause());
    }).verify();
}

Example 25 with Publisher

use of org.reactivestreams.Publisher in project spring-framework by spring-projects.

the class DispatcherHandlerErrorTests method controllerThrowsException.

@Test
public void controllerThrowsException() throws Exception {
    ServerWebExchange exchange = MockServerHttpRequest.get("/raise-exception").toExchange();
    Mono<Void> publisher = this.dispatcherHandler.handle(exchange);
    StepVerifier.create(publisher).consumeErrorWith(error -> assertSame(EXCEPTION, error)).verify();
}