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();
}
}