Different rolling file name for different logging levels

[agharta]

Hi all,

Searching in documentation i didn't find (or wrong search) an example to 
separate log files based on its level.

The idea is to have separate files named based on its level, so all 
error messages will be redirected to  "somefile-error.log", info to 
"somefile-info.log", and so on... with relative additivity property.

I suppose to  use a <Routing>  tag, but...how to iterate over message 
level (which lookup should i use)?

My example:

<Configuration status="fatal">
    <Appenders>
        <Routing name="Routing">
            <Routes pattern="$${some_message_level_variable}">
                <Route>
                    <RollingFile 
name="RollingFile-${some_message_level_variable}" 
fileName="the/path/logs/somefile-${some_message_level_variable}.log" 
filePattern="the/path/logs/somefile-${some_message_level_variable}-%d{yyyy-MM-dd}-%i.log.gz">
                        <PatternLayout>
                            <Pattern>%d %p %c{1.} [%t] %m%n</Pattern>
                        </PatternLayout>
                        <Policies>
                            <TimeBasedTriggeringPolicy />
                        </Policies>
                        <DefaultRolloverStrategy/>

<ThresholdFilterlevel="${some_message_level_variable}"/>

                    </RollingFile>
                </Route>
            </Routes>
        </Routing>
        <Console name="STDOUT" target="SYSTEM_OUT">
            <PatternLayout>
                <Pattern>%d %p %c{1.} [%t] %m%n</Pattern>
            </PatternLayout>
        </Console>
    </Appenders>
    <Loggers>
        <Root level="warn">
            <AppenderRef ref="Routing"/>
            <AppenderRef ref="STDOUT"/>
        </Root>
    </Loggers>
</Configuration>


Ideas on which property lookup should i use instead of 
${some_message_level_variable}??


A note: the best would be to not set any variable in ThreadContext 
and/or *Map map......


Thanks for your patience,

Best regards,

Agharta