public void Instrument(Action aspect, string instrumentationContext = null, double samplingRate = Constants.DefaultSamplingRate)
{
Tuple <IEnumerable <PerfitHandlerContext>, Dictionary <string, object> > contexts = null;
var corrId = Correlation.GetId(_info.CorrelationIdKey);
try
{
if (_info.PublishCounters)
{
contexts = BuildContexts();
}
}
catch (Exception e)
{
Trace.WriteLine(e.ToString());
if (_info.RaisePublishErrors)
{
throw;
}
}
var stopwatch = Stopwatch.StartNew();
try
{
aspect();
}
catch (Exception)
{
SetErrorContexts(contexts);
throw;
}
finally
{
try
{
if (_info.PublishEvent && ShouldInstrument(samplingRate))
{
PublishInstrumentationCallback(_info.CategoryName,
_info.InstanceName, stopwatch.ElapsedMilliseconds, instrumentationContext, corrId.ToString());
}
if (_info.PublishCounters)
{
CompleteContexts(contexts);
}
}
catch (Exception e)
{
Trace.WriteLine(e.ToString());
if (_info.RaisePublishErrors)
{
throw;
}
}
}
}
/// <summary>
/// Starts instrumentation
/// </summary>
/// <returns>The token to be passed to Finish method when finished</returns>
public object Start(double samplingRate = Constants.DefaultSamplingRate)
{
return(new InstrumentationToken()
{
Contexts = _info.PublishCounters ? BuildContexts() : null,
Kronometer = Stopwatch.StartNew(),
SamplingRate = samplingRate,
CorrelationId = Correlation.GetId(_info.CorrelationIdKey)
});
}
bool ShouldInstrument(double samplingRate)
{
var corrId = Correlation.GetId(_info.CorrelationIdKey);
return(ShouldInstrument(samplingRate, corrId.ToString()));
}