public virtual ObservingProducer <T> Produces(IObservable <T> sequence, Action <Exception> onError = null, Action onCompleted = null)
{
var observer = new DelegatingObserver <T>(@event => _consumer.Handle(@event), onError ?? (exception => { }), onCompleted ?? (() => { }));
_cache.Add(observer, sequence);
return(this);
}
public void Subscribe <T>(Consumes <T> consumer, Func <T, bool> topic)
{
var subscription = GetSubscriptionSubject <T>();
var observable = Box <T>(subscription).Where(topic).AsObservable();
observable.Subscribe(@event => consumer.Handle(@event), exception => { }, () => { });
}
private void Publish(T message)
{
lock (_buffer)
{
//see comment in FlushBuffer
_consumer.Handle(message);
}
}
public static void TryConsume <T>(this Consumes <T> consumer, T message) where T : Message
{
if (consumer == null)
{
return;
}
consumer.Handle(message);
}
private async void HandleUndeliverable(T @event)
{
await Task.Factory.StartNew(() =>
{
_undeliverableConsumer.Handle(@event);
Interlocked.Increment(ref _undelivered);
});
}
public void Subscribe <T>(Consumes <T> consumer)
{
var subscription = GetSubscriptionSubject <T>();
var observable = Box <T>(subscription).AsObservable();
var unsubscription = _unsubscriptions.GetOrAdd(typeof(T), t => new CancellationTokenSource());
observable.Subscribe(@event => consumer.Handle(@event), exception => { }, () => { }, unsubscription.Token);
}
public virtual void SetUp()
{
consumer = GivenConsumer();
try {
published = When();
if (published != null)
{
consumer.Handle(published);
}
}
catch (Exception Ex) {
caught = Ex;
}
}
public void Handle(T message)
{
if (!Monitor.TryEnter(_lockObject, _timeout))
{
throw new UnableToAcquireLockException();
}
try
{
_consumer.Handle(message);
}
finally
{
Monitor.Exit(_lockObject);
}
}
public DelegatingConsumer(Action <T> @delegate, Consumes <T> forwardTo)
{
_delegate = @event =>
{
try
{
@delegate(@event);
return(forwardTo.Handle(@event));
}
catch (Exception)
{
return(false);
}
};
}
private void ProductionCycle(ParallelOptions options, T @event, ParallelLoopState state)
{
if (state.ShouldExitCurrentIteration)
{
Backlog(@event);
return;
}
if (!_consumer.Handle(@event))
{
HandleUnsuccessfulDelivery(options, @event, state);
}
Interlocked.Increment(ref _sent);
options.CancellationToken.ThrowIfCancellationRequested();
}
private void Run()
{
while (true)
{
try
{
T item;
if (_queue.TryDequeue(out item))
{
_consumer.Handle(item);
_queue.MarkComplete(item);
}
}
catch (Exception Ex)
{
//Todo: Add log4net
//Dead letter
//Stop?
//??
}
}
}
private void Run()
{
while (true)
{
try
{
T item;
var current = new List <T>();
lock (_queue) {
while (_queue.Count > 0)
{
item = _queue.Dequeue();
current.Add(item);
}
}
current.ForEach(x => _consumer.Handle(x));
Thread.Sleep(_sleepMilliseconds);
}
catch (Exception Ex)
{
//what to do with errors at this point?
}
}
}
public void Handle(TConsumes message)
{
_inner.Handle((TProduces)message);
}
public void Handle(TIn message)
{
_consumer.Handle(message);
}
private void Backlog(T @event)
{
_backlogConsumer.Handle(@event);
}
