public void Cancel()
{
_downstreamCanceled = true;
if (!_upstreamCompleted)
{
_upstreamCompleted = true;
if (!ReferenceEquals(_upstream, null))
{
ReactiveStreamsCompliance.TryCancel(_upstream);
}
Clear();
}
}
public void OnSubscribe(ISubscription subscription)
{
if (subscription == null)
{
throw new ArgumentException("Subscription cannot be null");
}
if (_upstreamCompleted)
{
ReactiveStreamsCompliance.TryCancel(subscription);
}
else if (_downstreamCanceled)
{
_upstreamCompleted = true;
ReactiveStreamsCompliance.TryCancel(subscription);
}
else
{
_upstream = subscription;
// prefetch
ReactiveStreamsCompliance.TryRequest(_upstream, _inputBuffer.Length);
}
}
public void Receive(ActorGraphInterpreter.IBoundaryEvent e)
{
if (_waitingForShutdown)
{
if (e is ActorGraphInterpreter.ExposedPublisher)
{
var exposedPublisher = (ActorGraphInterpreter.ExposedPublisher)e;
_outputs[exposedPublisher.Id].ExposedPublisher(exposedPublisher.Publisher);
_publishersPending--;
if (CanShutdown)
{
IsTerminated = true;
}
}
else if (e is ActorGraphInterpreter.OnSubscribe)
{
var onSubscribe = (ActorGraphInterpreter.OnSubscribe)e;
ReactiveStreamsCompliance.TryCancel(onSubscribe.Subscription);
_subscribersPending--;
if (CanShutdown)
{
IsTerminated = true;
}
}
else if (e is ActorGraphInterpreter.Abort)
{
TryAbort(new TimeoutException(
$"Streaming actor has been already stopped processing (normally), but not all of its inputs or outputs have been subscribed in [{_settings.SubscriptionTimeoutSettings.Timeout}]. Aborting actor now."));
}
}
else
{
// Cases that are most likely on the hot path, in decreasing order of frequency
if (e is ActorGraphInterpreter.OnNext)
{
var onNext = (ActorGraphInterpreter.OnNext)e;
if (GraphInterpreter.IsDebug)
{
Console.WriteLine($"{Interpreter.Name} OnNext {onNext.Event} id={onNext.Id}");
}
_inputs[onNext.Id].OnNext(onNext.Event);
RunBatch();
}
else if (e is ActorGraphInterpreter.RequestMore)
{
var requestMore = (ActorGraphInterpreter.RequestMore)e;
if (GraphInterpreter.IsDebug)
{
Console.WriteLine($"{Interpreter.Name} Request {requestMore.Demand} id={requestMore.Id}");
}
_outputs[requestMore.Id].RequestMore(requestMore.Demand);
RunBatch();
}
else if (e is ActorGraphInterpreter.Resume)
{
if (GraphInterpreter.IsDebug)
{
Console.WriteLine($"{Interpreter.Name} Resume");
}
_resumeScheduled = false;
if (Interpreter.IsSuspended)
{
RunBatch();
}
}
else if (e is ActorGraphInterpreter.AsyncInput)
{
var asyncInput = (ActorGraphInterpreter.AsyncInput)e;
Interpreter.RunAsyncInput(asyncInput.Logic, asyncInput.Event, asyncInput.Handler);
RunBatch();
}
// Initialization and completion messages
else if (e is ActorGraphInterpreter.OnError)
{
var onError = (ActorGraphInterpreter.OnError)e;
if (GraphInterpreter.IsDebug)
{
Console.WriteLine($"{Interpreter.Name} OnError id={onError.Id}");
}
_inputs[onError.Id].OnError(onError.Cause);
RunBatch();
}
else if (e is ActorGraphInterpreter.OnComplete)
{
var onComplete = (ActorGraphInterpreter.OnComplete)e;
if (GraphInterpreter.IsDebug)
{
Console.WriteLine($"{Interpreter.Name} OnComplete id={onComplete.Id}");
}
_inputs[onComplete.Id].OnComplete();
RunBatch();
}
else if (e is ActorGraphInterpreter.OnSubscribe)
{
var onSubscribe = (ActorGraphInterpreter.OnSubscribe)e;
if (GraphInterpreter.IsDebug)
{
Console.WriteLine($"{Interpreter.Name} OnSubscribe id={onSubscribe.Id}");
}
_subscribersPending--;
_inputs[onSubscribe.Id].OnSubscribe(onSubscribe.Subscription);
RunBatch();
}
else if (e is ActorGraphInterpreter.Cancel)
{
var cancel = (ActorGraphInterpreter.Cancel)e;
if (GraphInterpreter.IsDebug)
{
Console.WriteLine($"{Interpreter.Name} Cancel id={cancel.Id}");
}
_outputs[cancel.Id].Cancel();
RunBatch();
}
else if (e is ActorGraphInterpreter.SubscribePending)
{
var subscribePending = (ActorGraphInterpreter.SubscribePending)e;
_outputs[subscribePending.Id].SubscribePending();
}
else if (e is ActorGraphInterpreter.ExposedPublisher)
{
var exposedPublisher = (ActorGraphInterpreter.ExposedPublisher)e;
_publishersPending--;
_outputs[exposedPublisher.Id].ExposedPublisher(exposedPublisher.Publisher);
}
}
}