[logback-user] Split logs to different files by MDC?

[ceki]

I'd suggest to re-write the expression as

    ((String))mdc.get("variable").matches("/test/")

Are you familiar with SiftingAppender? It seems to address a use case 
similar to yours.
HTH,

[1] http://logback.qos.ch/manual/appenders.html#SiftingAppender

-- 
Ceki
http://twitter.com/#!/ceki


On 12.06.2012 20:17, Yura Levandovskyy wrote:
> Hello
>
> I have an application that has an mdc variable. How can I make a proper
> filter, so that if variable = test, all such output goes to one file,
> and to another file if variable is anything else?
>
> I tried the following (not sure how to go from there even if it worked
> though):
>
> <expression>
> mdc?.get("variable") ~= /test/
> </expression>
>
> but the result is
>
> ERROR in ch.qos.logback.classic.boolex.JaninoEventEvaluator at 7d55b9f -
> Could not start evaluator with expression [mdc?.get("variable") ~= /test/ )]
>
> Any suggestions?
>
> Thanks
>