RE: Separate log records into different files by log level

Thank you very much Nicko. This worked well.

Marc

--- Nicko Cadell <nicko@xxxxxxxxxxxx> wrote:

> Marc,
> 
> To log to different files for specific levels you need to create an
> appender for each level and then use an <appender-ref> in the <root> to
> append to each of the appenders. Then you need to specify on the
> <appender> a filter to use to restrict the events that are written to
> each file. 
> 
> If you only want INFO level messages in the file you will need to use a
> LevelMatchFilter on the appender:
> 
> <!-- This filter will accept INFO events. -->
> <filter type="log4net.Filter.LevelMatchFilter">
>       <levelToMatch value="INFO" />
> </filter>
> 
> <!-- The filter is a chain, therefore we have to explicitly deny the
> other events -->
> <filter type="log4net.Filter.DenyAllFilter"/>
> 
> So a complete example with DEBUG and INFO going to separate files would
> be:
> 
> <log4net>
> 
>   <appender name="File_Info" type="log4net.Appender.FileAppender">
>     <file value="log-file1.txt" />
>     <appendToFile value="true" />
>     <layout type="log4net.Layout.PatternLayout">
>       <conversionPattern value="%d [%t] %-5p %c [%x] - %m%n" />
>     </layout>
>     <filter type="log4net.Filter.LevelMatchFilter">
>       <levelToMatch value="INFO" />
>     </filter>
>     <filter type="log4net.Filter.DenyAllFilter"/>
>   </appender>
> 
>   <appender name="File_Error" type="log4net.Appender.FileAppender">
>     <file value="log-file2.txt" />
>     <appendToFile value="true" />
>     <layout type="log4net.Layout.PatternLayout">
>       <conversionPattern value="%d [%t] %-5p %c [%x] - %m%n" />
>     </layout>
>     <filter type="log4net.Filter.LevelMatchFilter">
>       <levelToMatch value="ERROR" />
>     </filter>
>     <filter type="log4net.Filter.DenyAllFilter"/>
>   </appender>
> 
>   <root>
>     <level value="DEBUG" />
>     <appender-ref ref="File_Info" />
>     <appender-ref ref="File_Error" />
>   </root>
> </log4net>
> 
> 
> Note that in the above configuration messages with levels not exactly
> equal to INFO or ERROR will be lost because the appenders are ignoring
> them. You would need to add additional appenders for each output file.
> 
> If the built-in filters don't do what you need you can easily write a
> custom filter in your own assembly.
> 
> Nicko  
> 
> > -----Original Message-----
> > From: Marc Hoffmann [mailto:marchoffmann@xxxxxxxxx] 
> > Sent: 09 February 2005 00:49
> > To: log4net-user@xxxxxxxxxxxxxxxxxx
> > Subject: Separate log records into different files by log level
> > 
> > I have tried to search the forum for this topic, but with no 
> > luck, so I am posting a (hopefully) new question.
> > 
> > I am trying to use log4net with an ASP.Net Web Service and it 
> > works great with the FileAppender or RollingFileAppender. 
> > However, all log records for the defined log level or above 
> > flow into the same output file.
> > 
> > My ultimate goal is to direct log entries for each level to a 
> > separate log file, i.e. log entries recorded with Log.Error() 
> > go to an ERROR.log file, Log.Debug() entries go to a 
> > DEBUG.log file, etc., but each file only contains the log 
> > entries associated with that level.
> > 
> > Is that possible with log4net? And if so, how?
> > 
> > I have tried various combinations of things, but nothing 
> > seems to achieve that goal. Any help or insight would be appreciated.
> > 
> > Thank you.
> > 
> > Marc
> > 
>