Why does log4net stop logging after a while on .NET WCF but not a usual website? - wcf

Question

I've search many sites and tried several different opinions. But I still could not solve it. Here are the things I did right now:
In Global.asax at Application_Startup I give the file path and startup the Log4Net.
Right after I start log4net, I write a log that says "Application has
stared'"
Currently, there is only 1 worker in IIS for the WCF application The
IIS user has access to WRITE, MODIFY and READ privileges
The problem:
When I invoke a method of service directly (without doing the 2.
step below), No Logs is written
On a browser, I write te WCF url and hit ENTER, Log4Net creates the
folder and the files (files are EMPTY at this point).
If I make requests and invoke the methods (doing the 1st step), now
Log4Net writes the logs.
The actual problem:
After the 3rd step, (lets say we waited without any invokes of the
WCF methods around 10 minutes or more), the invoking DOES NOT CREATE
Log4Net Text logs ANYMORE.
Sometimes, if I repeat the 2nd step, it begins writing the logs
again. But there is no coherent results.
Here is the Config.xml:
<?xml version="1.0" encoding="utf-8"?>
<log4net>
<appender name="ProcessInfo_FileAppender" type="log4net.Appender.RollingFileAppender">
<file type="log4net.Util.PatternString" value="L:\LOGs\ProcessInfo\ProcessInfo_[%processid].txt" />
<lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
<appendToFile value="true" />
<rollingStyle value="Composite" />
<maxSizeRollBackups value="200" />
<maximumFileSize value="30MB" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] - %message%newline" />
</layout>
</appender>
<logger name="ProcessInfo">
<levelMin value="ERROR" />
<levelMax value="INFO" />
<appender-ref ref="ProcessInfo_FileAppender" />
</logger>
<root></root>
</log4net>
I have other WCF projects which have no problem even with multiple Workers. (I used the exact same IIS and Log4Net xml configuration with them). Also, as I mentioned on the title, I have a WebSite who has exact same logging codes (they both using a common 3rd party dll which I wrote) and has NO PROBLEM of writing Log4Net text logging at all.
Please help.
Thanks.

Answer 1

The problem is not in your logging configuration, you should try to enable log4net internal debugging. This will tell you why the logging stops. I guess there is some code that reconfigures your logging to load configuration from your web.config which is not there.
<configuration>
...
<appSettings>
<add key="log4net.Internal.Debug" value="true"/>
</appSettings>
...
<system.diagnostics>
<trace autoflush="true">
<listeners>
<add
name="textWriterTraceListener"
type="System.Diagnostics.TextWriterTraceListener"
initializeData="C:\tmp\log4net.txt" />
</listeners>
</trace>
</system.diagnostics>
</configuration>
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