public PipelineData <T> Evaluate <T>(Func <T> requestOperation)
{
var data = new PipelineData <T>();
try
{
if (requestOperation == null)
{
// todo handle this
}
data.Value = requestOperation();
data.Success = true;
}
catch (WebException)
{
// todo: implement logic to handle different error code
data.Success = false;
}
return(data);
}
public T Pass <T>(Func <T> operation)
{
if (currentState == State.Opened)
{
// todo: set a default value for fail circuit.
return(default(T));
}
PipelineData <T> data = null;
if (currentState == State.HalfOpened)
{
halfOpenedHits++;
if (halfOpenedHits % halfOpenedHitsWindows != 0)
{
// todo: set a default value for fail circuit.
return(default(T));
}
// Allow pass through for every halfOpenedHitsWindows times of operation.
data = Watcher.Evaluate <T>(operation);
if (data.Success)
{
// If half opened succeed at least HalfOpenedCounterThreshold of times, change circuit to Closed.
if ((halfOpenedHits / halfOpenedHitsWindows) >= HalfOpenedCounterThreshold)
{
currentState = State.Closed;
}
return(data.Value);
}
return(default(T));
}
data = Watcher.Evaluate <T>(operation);
if (data.Success)
{
if (currentState != State.Closed)
{
lock (this.syncLock)
{
currentState = State.Closed;
}
}
return(data.Value);
}
closedFailureCounter++;
if (closedFailureCounter >= closedFailureThreshold)
{
lock (this.syncLock)
{
currentState = State.Opened;
}
this.openedTimer.Start();
}
// todo: set a default value for fail circuit.
return(default(T));
}
