private static void Write(IAppMetrics metrics, string owningTypeName, string methodName, long duration, bool success = true)
{
var eventName = $"{owningTypeName}_{methodName}".SafeString();
double elapsed = (double)duration / AspectFactory.TickPerMicrosecond;
metrics.DecGauge($"{eventName}_gauge");
metrics.IncCounter($"{eventName}_count", success);
metrics.IncHistogram($"{eventName}_elapsed_microseconds", elapsed, success);
}
private static T Wrap <T>(IAppMetrics metrics, string owningTypeName, string targetName, Func <object[], object> target, object[] args)
{
var eventName = $"{AppSettings.ServiceName}_{owningTypeName}_{targetName}".SafeString();
var sw = Stopwatch.StartNew();
var success = true;
try
{
return((T)target(args));
}
catch
{
success = false;
throw;
}
finally
{
Write(metrics, eventName, sw.ElapsedMilliseconds, success);
}
}
private static async Task <T> WrapAsync <T>(IAppMetrics metrics, string owningTypeName, string targetName, Func <object[], object> target, object[] args)
{
var eventName = $"{owningTypeName}_{targetName}".SafeString();
var sw = Stopwatch.StartNew();
var success = true;
metrics.IncGauge($"{eventName}_gauge");
try
{
var result = await(Task <T>) target(args);
return(result);
}
catch
{
success = false;
throw;
}
finally
{
Write(metrics, owningTypeName, targetName, sw.ElapsedTicks, success);
}
}
private static void Write(IAppMetrics metrics, string eventName, long duration, bool success = true)
{
metrics.IncCounter($"{eventName}_count", success);
metrics.IncHistogram($"{eventName}_elapsed_ms", duration, success);
}
public MetricsAspect(IAppMetrics metrics)
{
this.Metrics = metrics;
}
