CODEWITHSUNDEEP
c#asp.netlog4netconsoleappender
dotnet-practitioner
dotnet-practitioner

Reputation: 14148

log4net configuration for a given class not working

namespace Com.Foo
{
    public class Bar
    {

        private static readonly ILog log = LogManager.GetLogger(typeof(Bar));

        public void DoIt()
        {
            log.Info("Did it again!");
        }
    }
}

class Program
{
    private static readonly ILog log = LogManager.GetLogger(typeof(Program));
    static void Main(string[] args)
    {
        string sfile = @"C:\development\Framework\Logging\ConsoleApplication1\app.config";
        XmlConfigurator.Configure(new System.IO.FileInfo(sfile));
        log.Info("Entering application.");
        Bar bar = new Bar();
        bar.DoIt();
        log.Info("Exiting application.");

        Console.ReadLine();
    }


}

My log4net configuration looks as follows:

<!-- A1 is set to be a ConsoleAppender -->
<appender name="A1" type="log4net.Appender.ConsoleAppender">

  <!-- A1 uses PatternLayout -->
  <layout type="log4net.Layout.PatternLayout">
    <conversionPattern value="%-4timestamp [%thread] %-5level %logger %ndc - %message%newline" />
  </layout>
</appender>

<!-- Set root logger level to DEBUG and its only appender to A1 -->
<root>
  <level value="DEBUG" />
  <appender-ref ref="A1" />
</root>


<!-- Print only messages of level WARN or above in the package Com.Foo -->
<logger name="Com.Foo">
  <level value="WARN" />
</logger>

The output of my application still shows log from Com.Foo

67 [10] INFO ConsoleApplication1.Program (null) - Entering application.

100 [10] INFO ConsoleApplication1.Com.Foo.Bar (null) - Did it again!

100 [10] INFO ConsoleApplication1.Program (null) - Exiting application.

How do I configure such that Com.Foo.Bar stops from showing up for WARN level?

What am I missing?

Thanks

Upvotes: 0

Views: 3213

Answers (3)

sgmoore
sgmoore

Reputation: 16067

Try

<levelToMatch value="WARN" />

Upvotes: 0

Sergey Berezovskiy
Sergey Berezovskiy

Reputation: 236208

Configuration, which you provided should work.

When you create logger Com.Foo.Bar it inherits settings from Com.Foo logger in hierarchy. Com.Foo logger inherits his appenders from root logger, but it has own level, which is set to WARN. So, when you trying to write logging event via Com.Foo.Bar logger, effective level will be retrieved from hierarchy - it's a level of nearest logger up in the hierarchy tree (root logger always has level). In your case it is WARN, so logging event will not be passed to appenders.

I think your configuration differs from what you provided. Maybe you are reading wrong configuration file. Try this code (app configuration file will be used):

XmlConfigurator.Configure();

Or (even better) use configuration via attribute:

[assembly: log4net.Config.XmlConfigurator(Watch=true)]

UPDATE

If changing logger retrieving from typeof(Bar) to "Com.Foo" worked, then you provided us wrong namespace of Bar class. Because log4net behind the scene takes full name of type as name of logger. Thus with namespace Com.Foo all should work.

Upvotes: 1

dotnet-practitioner
dotnet-practitioner

Reputation: 14148

I just figured it out.. I was not setting the logger properly in Foo.Bar class.

Update the following line 

private static readonly ILog log = LogManager.GetLogger(typeof(Bar));

to the following..

private static readonly ILog log = LogManager.GetLogger("Com.Foo");

and it worked.

Upvotes: 0

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