public IDisposable Subscribe(IObserver <int> observer)
{
if (observer == null)
{
throw new ArgumentNullException("observer");
}
var observerContext = new ObserverContext <int>(observer);
observerContext.Counter = 0;
var timer = new Timer(ctx =>
{
var context = ctx as ObserverContext <int>;
if (context == null)
{
var msg = "Unable to start timer delegate. Supplied ObserverContext<int> is either null or is not of the correct type.";
var ex = new ArgumentNullException("context", msg);
observer.OnError(ex);
throw ex;
}
try
{
if (context.Counter == _maxNumbersToGenerate)
{
observer.OnCompleted();
}
var n = GenerateNumber();
++context.Counter;
observer.OnNext(n);
}
catch (Exception ex)
{
observer.OnError(ex);
}
}, observerContext, _startAfterMilliseconds, _generateEveryMilliseconds);
observerContext.Timer = timer;
var subscription = Disposable.Create(() =>
{
observerContext?.Timer?.Change(Timeout.Infinite, Timeout.Infinite);
observerContext?.Timer?.Dispose();
});
observerContext.Subscription = subscription;
_observers.Add(observerContext);
return(subscription);
}
public static void PushFor(string key, Observation glue, ObserverContext context)
{
if (RegisterInstance.For(key) == null) return;
foreach (var observer in RegisterInstance.For(key))
{
observer.Context = context;
foreach (var observation in observer.GetObservations(glue))
{
Push(observation, glue);
}
}
}
public override void OnActionExecuted(ActionExecutedContext filterContext)
{
var context = new ObserverContext
{
{"ControllerName", _controllerName},
{"ControllerAction", _controllerAction}
};
try{
ThreadPool.QueueUserWorkItem(state =>
{
var glue = new ControllerTimeMeasurement(_controllerName, _controllerAction, _sw.ElapsedMilliseconds);
PulseManager.Push(glue, null);
PulseManager.PushFor("per_mvc_action_request", glue, context);
});
}
catch{
//TODO: Handle gracefully i.e. log and restart
}
finally{
_sw.Stop();
}
base.OnActionExecuted(filterContext);
}
