@Test
public void cancelInOnMessageShouldInvokeStreamCancel() throws Exception {
final ClientCallImpl<Void, Void> call =
new ClientCallImpl<Void, Void>(
DESCRIPTOR,
MoreExecutors.directExecutor(),
CallOptions.DEFAULT,
provider,
deadlineCancellationExecutor);
final Exception cause = new Exception();
ClientCall.Listener<Void> callListener =
new ClientCall.Listener<Void>() {
@Override
public void onMessage(Void message) {
call.cancel("foo", cause);
}
};
call.start(callListener, new Metadata());
call.halfClose();
call.request(1);
verify(stream).start(listenerArgumentCaptor.capture());
ClientStreamListener streamListener = listenerArgumentCaptor.getValue();
streamListener.onReady();
streamListener.headersRead(new Metadata());
streamListener.messageRead(new ByteArrayInputStream(new byte[0]));
verify(stream).cancel(statusCaptor.capture());
Status status = statusCaptor.getValue();
assertEquals(Status.CANCELLED.getCode(), status.getCode());
assertEquals("foo", status.getDescription());
assertSame(cause, status.getCause());
}
private static <ReqT, RespT, OutputT> OutputT getBlockingResult(
AbstractRetryingRpcListener<ReqT, RespT, OutputT> listener) {
try {
listener.start();
return listener.getCompletionFuture().get();
} catch (InterruptedException e) {
listener.cancel();
throw Status.CANCELLED.withCause(e).asRuntimeException();
} catch (ExecutionException e) {
listener.cancel();
throw Status.fromThrowable(e).asRuntimeException();
}
}
@Override
public void sendMessage(ReqT message) {
Preconditions.checkState(stream != null, "Not started");
Preconditions.checkState(!cancelCalled, "call was cancelled");
Preconditions.checkState(!halfCloseCalled, "call was half-closed");
try {
// TODO(notcarl): Find out if messageIs needs to be closed.
InputStream messageIs = method.streamRequest(message);
stream.writeMessage(messageIs);
} catch (Throwable e) {
stream.cancel(Status.CANCELLED.withCause(e).withDescription("Failed to stream message"));
return;
}
// For unary requests, we don't flush since we know that halfClose should be coming soon. This
// allows us to piggy-back the END_STREAM=true on the last message frame without opening the
// possibility of broken applications forgetting to call halfClose without noticing.
if (!unaryRequest) {
stream.flush();
}
}
@Test
public void streamCancelAbortsDeadlineTimer() {
fakeClock.forwardTime(System.nanoTime(), TimeUnit.NANOSECONDS);
ClientCallImpl<Void, Void> call =
new ClientCallImpl<Void, Void>(
DESCRIPTOR,
MoreExecutors.directExecutor(),
CallOptions.DEFAULT.withDeadline(Deadline.after(1000, TimeUnit.MILLISECONDS)),
provider,
deadlineCancellationExecutor);
call.start(callListener, new Metadata());
call.cancel("canceled", null);
// Run the deadline timer, which should have been cancelled by the previous call to cancel()
fakeClock.forwardMillis(1001);
verify(stream, times(1)).cancel(statusCaptor.capture());
assertEquals(Status.CANCELLED.getCode(), statusCaptor.getValue().getCode());
}