[jboss-jira] [JBoss JIRA] (JBRULES-3712) Logging of multiple Solvers in parallel is confusing: support MDC to make them readable

[Geoffrey De Smet (JIRA)]

    [ https://issues.jboss.org/browse/JBRULES-3712?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12744672#comment-12744672 ] 

Geoffrey De Smet commented on JBRULES-3712:
-------------------------------------------

Quick hack is to add the MDC lines before and after SingleBenchmark.call()

But we want to support this in production too, for SaaS etc.
                
> Logging of multiple Solvers in parallel is confusing: support MDC to make them readable
> ---------------------------------------------------------------------------------------
>
>                 Key: JBRULES-3712
>                 URL: https://issues.jboss.org/browse/JBRULES-3712
>             Project: JBRULES
>          Issue Type: Feature Request
>      Security Level: Public(Everyone can see) 
>          Components: drools-planner
>            Reporter: Geoffrey De Smet
>            Assignee: Geoffrey De Smet
>
> Basically we want this kind of logging output when running 3 solvers in parallel:
> {code}
> Solver1 INFO    Step (34)
> Solver1 INFO    Step (35)
> Solver2 INFO    Step (88)
> Solver1 INFO    Step (36)
> Solver2 INFO    Step (89)
> Solver7 INFO    Step (10)
> Solver3 INFO    Step (37)
> {code}
> but we don't want to prefix every logging message with the solver name, that's a big pita. Luckily:
> SLF4j exposes MDC's which make this a breeze:
> http://logback.qos.ch/manual/mdc.html

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