public static IObservable <Message> Create()
{
return
(Observable.Using(() => new Producer(), p =>
Observable.Create <Message>(o =>
{
ProducerMessageHandler handler = m => o.OnNext(m);
p.Attach(handler);
return Disposable.Create(() => o.OnCompleted());
})));
}
public Producer(ThirdPartyLib.Producer p)
{
_stream = Observable.Create(observer =>
{
ProducerMessageHandler h = msg => observer.OnNext(msg);
var unsubscribe = Disposable.Create(() => p.Detach(h));
p.Attach(h);
p.Start();
return(unsubscribe);
});
}
public ProducerObservable()
{
_Subject = new Subject <Message>();
ProducerMessageHandler fnHandler = m => _Subject.OnNext(m);
_Producer = new Producer();
_Producer.Attach(fnHandler);
_Producer.Start();
_Disposables = new CompositeDisposable();
_Disposables.Add(_Producer);
_Disposables.Add(_Subject);
}
public Producer(ThirdPartyLib.Producer p)
{
var c = Observable.Create(observer =>
{
ProducerMessageHandler h = msg => observer.OnNext(msg);
p.Attach(h);
p.Start();
return(Disposable.Empty);
}).Publish();
// Connect the observable the first time someone starts
// observing
_stream = Observable.Create(observer =>
{
var subscription = c.Subscribe(observer);
if (Interlocked.Exchange(ref _connected, 1) == 0)
{
c.Connect();
}
return(subscription);
});
}
