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From ceki <c...@qos.ch>
Subject Re: User-based logger level
Date Mon, 11 Jun 2012 15:59:32 GMT

Yours is a text-book requirement:

  http://logback.qos.ch/reasonsToSwitch.html#filters

See the docs on MDCFilter at [1].

[1]  http://logback.qos.ch/manual/filters.html#TurboFilter

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

On 11.06.2012 11:55, yong.li@agfa.com wrote:
> Dear all,
>
> We're about to implement a logging strategy that for different users
> different effective logger level are used. In particular, we are doing
> EJB, and we have already pushed user info onto MDC to implement this
> strategy.
>
> By default, the system will run using the following example logger levels
> for all users:
> root = INFO
> com.my.ejb1=WARNING
> com.my.ejb2=INFO // different ejbs may have different default levels
> ...
>
> When a system setting is enabled at runtime, we want to change
> com.my.ejb1=DEBUG, but only for a few selected users. That is, if user A
> invokes ejb1, all ejb1 log messages with level>= DEBUG will be logged,
> while if another user B invokes ejb1, it uses the default setting, and
> only messages with level>= WARNING will be logged. (it also honors the
> logger hierarchy, that is if we want to change the level for a package,
> all ejbs in that package behave in the same way)
>
> We will do this on our production systems, so performance is critical.
>
> What would be a good way to achieve this?
>
> Kind Regards,
>
> Yong



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