Examples with Uni io.smallrye.mutiny.Uni used on opensource projects

Example 16 with Uni

use of io.smallrye.mutiny.Uni in project smallrye-fault-tolerance by smallrye.

the class MutinyBulkheadTest method bulkhead.

@Test
public void bulkhead() throws Exception {
    FaultTolerance<Uni<String>> guarded = MutinyFaultTolerance.<String>create().withBulkhead().limit(5).queueSize(5).done().withFallback().handler(this::fallback).applyOn(BulkheadException.class).done().withThreadOffload(true).build();
    Party party = Party.create(5);
    for (int i = 0; i < 10; i++) {
        guarded.call(() -> {
            party.participant().attend();
            return Uni.createFrom().item("ignored");
        }).subscribeAsCompletionStage();
    }
    party.organizer().waitForAll();
    assertThat(guarded.call(() -> Uni.createFrom().item("value")).subscribeAsCompletionStage()).succeedsWithin(10, TimeUnit.SECONDS).isEqualTo("fallback");
    party.organizer().disband();
}

Example 17 with Uni

use of io.smallrye.mutiny.Uni in project smallrye-mutiny by smallrye.

the class MultiFromResourceTest method testThatOnFailureFinalizerIsNotCallIfResourceSupplierThrowsAnException.

@Test
public void testThatOnFailureFinalizerIsNotCallIfResourceSupplierThrowsAnException() {
    AssertSubscriber<Integer> subscriber = AssertSubscriber.create(20);
    Supplier<Integer> supplier = () -> {
        throw new NullPointerException("boom");
    };
    AtomicInteger onFailure = new AtomicInteger();
    AtomicInteger onComplete = new AtomicInteger();
    AtomicInteger onCancellation = new AtomicInteger();
    BiFunction<Integer, Throwable, Uni<Void>> onFailureCallback = (s, f) -> {
        onFailure.set(s);
        return Uni.createFrom().voidItem();
    };
    Function<Integer, Uni<Void>> onCompletionCallback = s -> {
        onComplete.set(s);
        return Uni.createFrom().voidItem();
    };
    Function<Integer, Uni<Void>> onCancellationCallback = s -> {
        onCancellation.set(s);
        return Uni.createFrom().voidItem();
    };
    Multi.createFrom().resource(supplier, r -> Multi.createFrom().range(r, 11)).withFinalizer(onCompletionCallback, onFailureCallback, onCancellationCallback).subscribe(subscriber);
    subscriber.assertFailedWith(NullPointerException.class, "boom");
    assertThat(onFailure).hasValue(0);
    assertThat(onCancellation).hasValue(0);
    assertThat(onComplete).hasValue(0);
}

Example 18 with Uni

use of io.smallrye.mutiny.Uni in project smallrye-mutiny by smallrye.

the class UniRepeatTest method testRepeatWhilstWithDelay.

@RepeatedTest(10)
public void testRepeatWhilstWithDelay() {
    List<Long> times = new ArrayList<>();
    Duration delay = Duration.ofMillis(100);
    Page page1 = new Page(Arrays.asList(1, 2, 3), 1);
    Page page2 = new Page(Arrays.asList(4, 5, 6), 2);
    Page page3 = new Page(Arrays.asList(7, 8), -1);
    Page[] pages = new Page[] { page1, page2, page3 };
    AtomicInteger cursor = new AtomicInteger();
    AssertSubscriber<Integer> subscriber = Multi.createBy().repeating().uni(() -> Uni.createFrom().item(pages[cursor.getAndIncrement()]).onItem().invoke(() -> times.add(System.currentTimeMillis()))).withDelay(delay).whilst(p -> p.next != -1).onItem().transformToMulti(p -> Multi.createFrom().iterable(p.items)).concatenate().subscribe().withSubscriber(AssertSubscriber.create(50));
    subscriber.await().assertItems(1, 2, 3, 4, 5, 6, 7, 8);
    assertThat(times).hasSize(3);
    for (int i = 0; i < times.size() - 1; i++) {
        assertThat(times.get(i) + delay.toMillis()).isLessThanOrEqualTo(times.get(i + 1));
    }
}

Example 19 with Uni

use of io.smallrye.mutiny.Uni in project smallrye-mutiny by smallrye.

the class UniRepeatTest method testRepeatWhilst.

@RepeatedTest(10)
public void testRepeatWhilst() {
    Page page1 = new Page(Arrays.asList(1, 2, 3), 1);
    Page page2 = new Page(Arrays.asList(4, 5, 6), 2);
    Page page3 = new Page(Arrays.asList(7, 8), -1);
    Page[] pages = new Page[] { page1, page2, page3 };
    AtomicInteger cursor = new AtomicInteger();
    AssertSubscriber<Integer> subscriber = Multi.createBy().repeating().uni(() -> Uni.createFrom().item(pages[cursor.getAndIncrement()])).whilst(p -> p.next != -1).onItem().transformToMulti(p -> Multi.createFrom().iterable(p.items)).concatenate().subscribe().withSubscriber(AssertSubscriber.create(50));
    subscriber.assertCompleted().assertItems(1, 2, 3, 4, 5, 6, 7, 8);
}

Example 20 with Uni

use of io.smallrye.mutiny.Uni in project smallrye-mutiny by smallrye.

the class UniFromPublisherTest method testThatValueIsNotEmittedBeforeSubscription.

@SuppressWarnings("ConstantConditions")
@Test
public void testThatValueIsNotEmittedBeforeSubscription() {
    UniAssertSubscriber<Integer> subscriber = UniAssertSubscriber.create();
    AtomicBoolean called = new AtomicBoolean();
    Uni<Integer> uni = Uni.createFrom().publisher(Flowable.generate(emitter -> {
        called.set(true);
        emitter.onNext(1);
        emitter.onComplete();
    }));
    assertThat(called).isFalse();
    uni.subscribe().withSubscriber(subscriber);
    subscriber.assertCompleted().assertItem(1);
    assertThat(called).isTrue();
}