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

ceki ceki at qos.ch
Wed Jun 13 23:49:31 CEST 2012


SiftingAppender can contain any other appenders except another 
SiftingAppender. Can you post your config file?

On 13.06.2012 23:47, Yura Levandovskyy wrote:
> Great, SiftingAppender seems to be what I need, once I can configure it
> correctly
>
> Could you assist with rolling policy for it? I have a rolling policy
> that rolls over on size. Whether I put it in the sifting appender
> (*<appendername="SIFT"class="ch.qos.logback.classic.sift.SiftingAppender">)
> *
> or one of the generated ones*
> *
> *(**<appendername="FILE-${userid}"class="ch.qos.logback.core.FileAppender">)*
> it seems to have no effect in either case. The rolling policy works fine
> in a separate FileAppender. Is it possible to add a rolling policy for a
> sifting appender, am I missing something?
>
> Thank you.
>
>
>
> ------------------------------------------------------------------------
> *From:* ceki <ceki at qos.ch>
> *To:* logback users list <logback-user at qos.ch>
> *Sent:* Tuesday, June 12, 2012 4:00:28 PM
> *Subject:* Re: [logback-user] Split logs to different files by MDC?
>
>
> 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 <http://twitter.com/#%21/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
>  >


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


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