public Subscription(PerformanceCounterObservable observable, IObserver <PerformanceCounterSample> observer)
{
// create a new counter for this subscription
_counter = observable._createCounter();
_pollingInterval = observable._pollingInterval;
_observer = observer;
// seed previous sample to support computation
_previousSample = _counter.NextSample();
// create a timer to support polling counter at an interval
_timer = new Timer(Sample);
_timer.Change(_pollingInterval.Milliseconds, -1);
}
public static CepStream <PerformanceCounterSample> CreateInput(
Application application,
string categoryName,
string counterName,
string instanceName,
TimeSpan pollingInterval,
string streamName = null)
{
IObservable <PerformanceCounterSample> source = new PerformanceCounterObservable(categoryName, counterName, instanceName, pollingInterval);
AdvanceTimeSettings advanceTimeSettings = AdvanceTimeSettings.IncreasingStartTime;
return(source.ToPointStream(application, s =>
PointEvent.CreateInsert(s.StartTime, s),
advanceTimeSettings,
streamName));
}
