I'm trying build out our logging framework using EntLib Logging and use attribute to indicate which class/method should be logged. So I think Interception would be a good choice. I'm a super noob to Ninject and Interception and I's following the tutorial at Innovatian Software on how to use interception via attributes. But when I run the app, BeforeInvoke and AfterInvoke was never called. Help Please, Thank You!
using System;
using System.Diagnostics;
using System.Collections.Generic;
using Castle.Core;
using Ninject;
using Ninject.Extensions.Interception;
using Ninject.Extensions.Interception.Attributes;
using Ninject.Extensions.Interception.Request;
class Program
{
static void Main(string[] args)
{
var kernel = new StandardKernel();
kernel.Bind<ObjectWithMethodInterceptor>().ToSelf();
var test= kernel.Get<ObjectWithMethodInterceptor>();
test.Foo();
test.Bar();
Console.ReadLine();
}
}
public class TraceLogAttribute : InterceptAttribute
{
public override IInterceptor CreateInterceptor(IProxyRequest request)
{
return request.Context.Kernel.Get<TimingInterceptor>();
}
}
public class TimingInterceptor : SimpleInterceptor
{
readonly Stopwatch _stopwatch = new Stopwatch();
protected override void BeforeInvoke(IInvocation invocation)
{
Console.WriteLine("Before Invoke");
_stopwatch.Start();
}
protected override void AfterInvoke(IInvocation invocation)
{
Console.WriteLine("After Invoke");
_stopwatch.Stop();
string message = string.Format("Execution of {0} took {1}.",
invocation.Request.Method,
_stopwatch.Elapsed);
Console.WriteLine(message);
_stopwatch.Reset();
}
}
public class ObjectWithMethodInterceptor
{
[TraceLog] // intercepted
public virtual void Foo()
{
Console.WriteLine("Foo - User Code");
}
// not intercepted
public virtual void Bar()
{
Console.WriteLine("Bar - User Code");
}
}
I figured it out, I missed the part where I've to disable auto module loading and manually load the DynamicProxy2Module to the kernel. Here's the change to the code:
Hope this help someone else.