|
This aspect allows logging some diagnostic information with minimum efforts.
All you need to do is to decorate your class with the Log attribute.
If you have a class hierarchy you can decorate only your base class.
Diagnostic information will be logged for all virtual and abstract members
of your abstract class.
LoggingAspect.cs
using System;
using System.Threading;
using NUnit.Framework;
using BLToolkit.Aspects;
using BLToolkit.Reflection;
namespace HowTo.Aspects
{
[TestFixture]
public class LoggingAspectTest
{
[Log]
public abstract class TestClass
{
// Here we customize the logging settings.
// This call will be logged in spite of default settings.
//
[Log(MinCallTime=50)]
public virtual void Test1(int i)
{
Thread.Sleep(100);
}
// This call is not going to be logged (see default settings below).
//
public virtual void Test2(DateTime dt)
{
Thread.Sleep(100);
}
// By default exception calls are logged.
//
public virtual void Test3(string s)
{
throw new ApplicationException("Test exception.");
}
}
[Test]
public void Test()
{
// By setting MinCallTime to some value, we prevent logging any call
// which is shorter than the provided value.
//
LoggingAspect.MinCallTime = 1000;
TestClass t = TypeAccessor<TestClass>.CreateInstance();
t.Test1(1);
t.Test2(DateTime.Now);
try
{
t.Test3("3");
}
catch
{
}
}
}
} |
Here is the logging output.
4/20/2008 11:19:44 PM: HowTo.Aspects.LoggingAspectTest.BLToolkitExtension.TestClass.Test1(1) - 105 ms.
4/20/2008 11:19:46 PM: HowTo.Aspects.LoggingAspectTest.BLToolkitExtension.TestClass.Test3("3") - 1507 ms
with exception 'System.ApplicationException' - "Test exception.". |
|