The Log4Net mailing list is a great source of information about using log4Net, in this forum we collect all the messages in the log4net user list and some selected threads from the developer list.
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Hadley Willan
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| 02/11/2009 2:39 AM |
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Hi peoples,
I've used log4net for a while, but I've got the following problem.
I have a rolling file appender that takes everything, we'll call this the "VerboseAppender", easily configured. ALL levels go to it and everything gets logged.
I have an ADO.Net appender that takes ERROR,FATAL level and logs to a stored procedure. We'll call this the "DBAppender"
But, we’ve got an annoying set of printer classes, that tend to spew masses of errors sometimes. These live under MyNamespace.StaticClassX.
What we need to do is add a separate local rolling file appender "NamespaceClassApppender", that takes only logs messages from MyNamespace.StaticClassX and logs them.
Then I need exlcude anything for MyNamespace.StaticClassX from the VerboseAppender and the DBAppender.
Is the best way to do this with Filters?
Basically each appender needs the following?
VerboseAppender, IF you're NOT MyNamespace.StaticClassX log it
DBAppender, (same as above)
NamespaceClassApppender, IF you ARE MyNamespace.StaticClassX log it, otherwise ignore it.
Thanks in advance.
Hadley
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Nick Durcholz
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| 02/11/2009 3:32 PM |
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I think what you want to do is use the logger heirarchy for this. Something like the following will work:
<log4net debug="true">
<appender name="VerboseAppender" type="...">
...
</appender>
<appender name="DBAppender" type="...">
...
</appender>
<appender name="NamespaceClassApppender" type="...">
...
</appender>
<root>
<level value="ALL"/>
<appender-ref ref="VerboseAppender"/>
<appender-ref ref="DBAppender"/>
</root>
<logger name="MyNamespace.StaticClassX" additivity="false">
<level value="ALL" />
<appender-ref ref="NamespaceClassAppender" />
</logger>
</log4net>
The key here is the additivity="false" attribute on MyNamespace.StaticClassX logger. This indicates that the logger doesn't inherit appenders and other settings from the root logger, so messages sent to that logger are only sent to NamespaceClassAppender and not VerboseAppender or DBAppender.
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Hadley Willan
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| 02/12/2009 12:57 AM |
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Thanks Nick,
That works a charm!
:)
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