/// <summary>
/// Subscribes the given observer to the observable sequence.
/// </summary>
/// <param name="observer">Observer that will receive notifications from the observable sequence.</param>
/// <returns>Disposable object representing an observer's subscription to the observable sequence.</returns>
/// <exception cref="ArgumentNullException"><paramref name="observer"/> is null.</exception>
public IDisposable Subscribe(IObserver <T> observer)
{
if (observer == null)
{
throw new ArgumentNullException("observer");
}
var autoDetachObserver = new AutoDetachObserver <T>(observer);
try
{
autoDetachObserver.Disposable = SubscribeCore(autoDetachObserver);
}
catch (Exception exception)
{
//
// This can happen when there's a synchronous callback to OnError in the
// implementation of SubscribeCore, which also throws. So, we're seeing
// an exception being thrown from a handler.
//
// For compat with v1.x, we rethrow the exception in this case, keeping
// in mind this should be rare but if it happens, something's totally
// screwed up.
//
if (!autoDetachObserver.Fail(exception))
{
throw;
}
}
return(autoDetachObserver);
}
public void AutoDetachObserver_ImplementISafeObserver()
{
var myObserver = Observer.Create <int>(i =>
{
i.Dump();
if (i == 1)
{
throw new Exception("triggered by observer");
}
}, ex => ex.Message.ToString(), () => "completed".Dump());
var observer = new AutoDetachObserver <int>(myObserver);
observer.SetResource(Disposable.Create(() => "obsrever exception i will clearnup by IDisposable Resource".Dump()));
var observable = new MyObservable();
observable.Subscribe(observer);
}
public IDisposable Subscribe(IObserver <T> observer)
{
if (observer == null)
{
throw new ArgumentNullException("observer");
}
var autoDetachObserver = observer as AutoDetachObserver;
if (autoDetachObserver == null)
{
autoDetachObserver = new AutoDetachObserver(observer);
}
var subscription = new Disposable(autoDetachObserver);
autoDetachObserver.Add(subscription);
Scheduler.CurrentThread.EnsureTrampoline(() => subscription.Set(subscribe(autoDetachObserver)));
return(subscription);
}
object gate = new object(); // protects disposable state
public Disposable(AutoDetachObserver observer)
{
this.observer = observer;
}
