PostSharp Aspect for Metrics

gistfile1.cs

using System;
using System.Diagnostics;
using System.Reflection;
using PostSharp.Aspects;
using PostSharp.Extensibility;

namespace Common.Metrics
{
    [Serializable]
    [MulticastAttributeUsage(MulticastTargets.Method)]
    public sealed class TimingAttribute : OnMethodBoundaryAspect
    {
        [NonSerialized]
        private Stopwatch _stopwatch;

        private string _name;

        public override void CompileTimeInitialize(MethodBase method, AspectInfo aspectInfo)
        {
            _name = method.DeclaringType != null ? string.Format("{0}.{1}", method.DeclaringType.FullName.Replace(".", ""), method.Name) : method.Name;
        } 

        public override void OnEntry(MethodExecutionArgs args)
        {
            _stopwatch = Stopwatch.StartNew();
            base.OnEntry(args);
        }

        public override void OnExit(MethodExecutionArgs args)
        {
            Metrics.Timing(_name, (long)_stopwatch.Elapsed.TotalMilliseconds);
            base.OnExit(args);
        }

        public override void OnException(MethodExecutionArgs args)
        {
            Metrics.Timing(string.Format("error.{0}", _name), (long)_stopwatch.Elapsed.TotalMilliseconds);
            base.OnException(args);
        }
    }
}