Cred ca toata lumea stie la ce e bun Log4Net – este un logger . E foarte bun la log-at mesaje – in principiu cele de eroare – si trimis in cele mai diverse surse – la de fisiere text la console si la BD.

Dar problema este ca as fi vrut ceva sa imi logheze intrarea si iesirea dintr-o metoda, ceva de genul :

public string Arata(Point P, string s){

logger.Debug(“ am intrat cu Point “ + P + “ si string “ + s);

//code

logger.Debug(“ am iesit cu rezultatul “ + ….)
}

La recomandarea lui Dan Bunea, am dat de PostSharp si Log4PostSharp

Dupa ce m-am chinuit sa il fac sa lucreze , iata la ce am ajuns:

1. Un folder lib , in care am pus fisierele :

lib\a.txt
lib\Default.psproj
lib\Log4PostSharp.dll
lib\Log4PostSharp.pdb
lib\Log4PostSharp.psplugin
lib\Log4PostSharp.Weaver.dll
lib\plugins
lib\PostSharp-1.0.targets
lib\PostSharp-1.0.version
lib\PostSharp-AppDomain.config
lib\PostSharp-Library.config
lib\PostSharp-Platform.config
lib\PostSharp.Core.dll
lib\PostSharp.Core.XmlSerializers.dll
lib\PostSharp.exe
lib\PostSharp.exe.config
lib\PostSharp.Laos.dll
lib\PostSharp.Laos.psplugin
lib\PostSharp.Laos.Weaver.dll
lib\PostSharp.MSBuild.dll
lib\PostSharp.Public.dll
lib\PostSharp.targets
lib\plugins\Log4PostSharp.dll
lib\plugins\Log4PostSharp.pdb
lib\plugins\Log4PostSharp.psplugin

2. Project Properties=> Reference Paths=> adaugat folderul lib

3. Un fisier .psproj numit la fel ca proiectul, in care am scris standard

<?xml version="1.0" encoding="utf-8" ?>
<Project xmlns="http://schemas.postsharp.org/1.0/configuration">
    <SearchPath Directory="bin/{$Configuration}"/>
    <SearchPath Directory="{$SearchPath}" />
    <SearchPath Directory="lib" />   
    <Tasks>
        <AutoDetect />
        <Compile TargetFile="{$Output}" IntermediateDirectory="{$IntermediateDirectory}"  CleanIntermediate="false" />
    </Tasks>
</Project>

4. In csproj adaugat cu mina, linga <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />

<PropertyGroup>
   <DontImportPostSharp>True</DontImportPostSharp>
   <PostSharpDirectory>lib\</PostSharpDirectory>
   <PostSharpUseCommandLine>True</PostSharpUseCommandLine>
</PropertyGroup>

<Import Project="$(PostSharpDirectory)PostSharp.targets" Condition=" Exists(‘$(PostSharpDirectory)PostSharp.targets’) " />

5. In AssemblyInfo.cs adaugat  (pentru a genera pentru fiecare metoda)

[assembly: Log(AttributeTargetTypes = "*", EntryLevel = LogLevel.Debug,
    EntryText = "Entering method: {signature} with parameters {paramvalues}", ExitText = "exit method {signature} with {returnvalue}",
  ExitLevel = LogLevel.Debug, ExceptionLevel = LogLevel.Error, AttributePriority = 1)]

Asta ca sa genereze un log pentru fiecare metoda …

6. Incepe log4net Adaugat un fisier log4net.config si pus

log4net.Config.XmlConfigurator.ConfigureAndWatch(new System.IO.FileInfo("log4net.config"));

GATA! Configurat – si apoi am uitat de el….

Output-ul este ceva de genul :

2009-07-17 22:24:08,541 [TestRunnerThread] DEBUG fisier.cs  Namespace.Clasa [(null)] – Entering method: Void .cctor() with parameters
2009-07-17 22:24:08,729 [TestRunnerThread] DEBUG fisier.cs  Namespace.Clasa [(null)] – exit method Void .cctor() with
2009-07-17 22:24:08,760 [TestRunnerThread] DEBUG fisier.cs  Namespace.Clasa [(null)] – Entering method: Namespace.ClasaList Find(System.String) with parameters "5888"
2009-07-17 22:24:08,760 [TestRunnerThread] DEBUG   Namespace.ClasaList [(null)] – Entering method: Void .ctor() with parameters
2009-07-17 22:24:08,760 [TestRunnerThread] DEBUG   Namespace.ClasaList [(null)] – exit method Void .ctor() with
2009-07-17 22:24:08,760 [TestRunnerThread] DEBUG clasa2.cs  namespace.DataContext [(null)] – Entering method: Void .cctor() with parameters
2009-07-17 22:24:08,760 [TestRunnerThread] DEBUG clasa2.cs  namespace.DataContext [(null)] – exit method Void .cctor() with
2009-07-17 22:24:09,166 [TestRunnerThread] DEBUG clasa2.cs  namespace.DataContext [(null)] – Entering method: Void .ctor() with parameters
2009-07-17 22:24:09,166 [TestRunnerThread] DEBUG clasa2.cs  namespace.DataContext [(null)] – exit method Void .ctor() with
2009-07-17 22:24:09,198 [TestRunnerThread] DEBUG clasa2.cs  namespace.DataContext [(null)] – Entering method: System.Data.Linq.Table`1<Namespace.clasa1> get_clasa3() with parameters
2009-07-17 22:24:09,401 [TestRunnerThread] DEBUG clasa2.cs  namespace.DataContext [(null)] – exit method System.Data.Linq.Table`1<Namespace.clasa1> get_clasa3() with Table(clasa2)
2009-07-17 22:24:11,307 [TestRunnerThread] DEBUG clasa2.cs  namespace.DataContext [(null)] – Entering method: System.Data.Linq.Table`1<amespace.clasa2> get_clasa4() with parameters
2009-07-17 22:24:11,417 [TestRunnerThread] DEBUG clasa2.cs  namespace.DataContext [(null)] – exit method System.Data.Linq.Table`1<amespace.clasa2> get_clasa4() with Table(clasa2)
2009-07-17 22:24:11,495 [TestRunnerThread] DEBUG fisier.cs  Namespace.Clasa [(null)] – exit method Namespace.ClasaList Find(System.String) with Clasa2List : 0