@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());
}
@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
}
}