I have a program that makes many log4net calls to the "myprogram" loggers. It also calls other code that makes log4net calls to other loggers. I want to capture all logs higher than INFO for "myprogram" and all logs higher than WARN for everything else. This way, I get the work-in-progress messages specific to the task I'm working on, but am still notified of potentially bad things happening in the supporting code. I want this sent to both Console and a log file.
I have the following log4net config:
<log4net>
<root>
<level value="WARN" />
<appender-ref ref="Console" />
<appender-ref ref="LogFile" />
</root>
<logger name="myprogram">
<level value="INFO" />
<appender-ref ref="Console" />
<appender-ref ref="LogFile" />
</logger>
<appender name="Console" type="log4net.Appender.ConsoleAppender">
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%message%newline" />
</layout>
<threshold value="INFO" />
</appender>
<appender name="LogFile" type="log4net.Appender.RollingFileAppender">
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="- %utcdate %level %logger %ndc %thread %message%newline" />
</layout>
<appendToFile value="false" />
<staticLogFileName value="true" />
<rollingStyle value="Once" />
<file value="mylogfile" />
<immediateFlush value="true" />
<threshold value="INFO" />
<lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
</appender>
</log4net>
This makes perfect sense to me: log >WARN for everything and >INFO for the specific "myprogram" logger.
The problem is that I'm getting INFO messages logged twice on both Console and LogFile. This only happens if I have both the <root>
and <logger>
elements filled though; if I remove either one, then the remaining one works as I expect.
I could understand if I was getting double-logging of WARN entries (since myprogram matches both "root" and "myprogram"), but it's happening at INFO even though ROOT is (presumably) set to WARN.
Am I doing something wrong here, or is this a log4net bug/ambiguity?
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