예제 #1
0
  @Test
  public void contextCancellationCancelsStream() throws Exception {
    // Attach the context which is recorded when the call is created
    Context.CancellableContext cancellableContext = Context.current().withCancellation();
    Context previous = cancellableContext.attach();

    ClientCallImpl<Void, Void> call =
        new ClientCallImpl<Void, Void>(
                DESCRIPTOR,
                new SerializingExecutor(Executors.newSingleThreadExecutor()),
                CallOptions.DEFAULT,
                provider,
                deadlineCancellationExecutor)
            .setDecompressorRegistry(decompressorRegistry);

    previous.attach();

    call.start(callListener, new Metadata());

    Throwable t = new Throwable();
    cancellableContext.cancel(t);

    verify(stream, times(1)).cancel(statusArgumentCaptor.capture());

    verify(stream, times(1)).cancel(statusCaptor.capture());
    assertEquals(Status.Code.CANCELLED, statusCaptor.getValue().getCode());
  }
예제 #2
0
  @Test
  public void contextAlreadyCancelledNotifiesImmediately() throws Exception {
    // Attach the context which is recorded when the call is created
    Context.CancellableContext cancellableContext = Context.current().withCancellation();
    Throwable cause = new Throwable();
    cancellableContext.cancel(cause);
    Context previous = cancellableContext.attach();

    ClientCallImpl<Void, Void> call =
        new ClientCallImpl<Void, Void>(
                DESCRIPTOR,
                new SerializingExecutor(Executors.newSingleThreadExecutor()),
                CallOptions.DEFAULT,
                provider,
                deadlineCancellationExecutor)
            .setDecompressorRegistry(decompressorRegistry);

    previous.attach();

    final SettableFuture<Status> statusFuture = SettableFuture.create();
    call.start(
        new ClientCall.Listener<Void>() {
          @Override
          public void onClose(Status status, Metadata trailers) {
            statusFuture.set(status);
          }
        },
        new Metadata());

    // Caller should receive onClose callback.
    Status status = statusFuture.get(5, TimeUnit.SECONDS);
    assertEquals(Status.Code.CANCELLED, status.getCode());
    assertSame(cause, status.getCause());

    // Following operations should be no-op.
    call.request(1);
    call.sendMessage(null);
    call.halfClose();

    // Stream should never be created.
    verifyZeroInteractions(transport);

    try {
      call.sendMessage(null);
      fail("Call has been cancelled");
    } catch (IllegalStateException ise) {
      // expected
    }
  }