public IMethodReturn Invoke(IMethodInvocation input, GetNextInterceptionBehaviorDelegate getNext)
{
var metricsAttributes = input.MethodBase.GetCustomAttributes(true).OfType <IMetricsAttribute>();
var disposables = new List <IDisposable>();
try
{
foreach (var metricsAttribute in metricsAttributes)
{
FillMacros(input, metricsAttribute);
switch (metricsAttribute)
{
case MetricsTimerAttribute timerAttribute:
var metricTimer = _metricsProvider.Timer(timerAttribute.Context, timerAttribute.Name);
disposables.Add(metricTimer);
break;
case MetricsCounterAttribute counterAttribute:
var counterValue = long.Parse(GetMethodParamValue(input, counterAttribute.ParamName) ?? "1");
_metricsProvider.Counter(counterAttribute.Context, counterAttribute.Name, counterValue);
break;
case MetricsMeterAttribute meterAttribute:
var meterValue = long.Parse(GetMethodParamValue(input, meterAttribute.ParamName) ?? "1");
_metricsProvider.Meter(meterAttribute.Context, meterAttribute.Name, meterValue);
break;
case MetricsHistogramAttribute histogramAttribute:
var histogramValue = long.Parse(GetMethodParamValue(input, histogramAttribute.ParamName) ?? "1");
_metricsProvider.Meter(histogramAttribute.Context, histogramAttribute.Name, histogramValue);
break;
}
}
return(getNext()(input, getNext));
}
finally
{
foreach (var disposable in disposables)
{
disposable?.Dispose();
}
}
}