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https://issues.apache.org/jira/browse/SHIRO-391?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jan Stamer updated SHIRO-391:
-----------------------------

    Description: 
Sometimes it is useful to log the user name. That way it can easily be traced 
which user faced an exception or where an error occurred.

The Mapped Diagnostic Context (MDC) of SLF4J can be used for that as it uses 
the same mechanisms as Shiro already does. That way one can use 
%X{shiroSubject} in the log pattern. This will then be filled with the 
principal name or left blank.

Remark: No additional libraries or anything are necessary for that. All that's 
needed is SLF4J and that's there already.

  was:
Sometimes it is useful to log the user name. That way it can easily be traced 
which user faced an exception or where an error occurred.

The Mapped Diagnostic Context (MDC) of SLF4J can be used for that as it uses 
the same mechanisms as Shiro already does. That way one can use %{shiroSubject} 
in the log pattern. This will then be filled with the principal name or left 
blank.

Remark: No additional libraries or anything are necessary for that. All that's 
needed is SLF4J and that's there already.

    
> Enable Principal in Logs using SLF4J MDC
> ----------------------------------------
>
>                 Key: SHIRO-391
>                 URL: https://issues.apache.org/jira/browse/SHIRO-391
>             Project: Shiro
>          Issue Type: Improvement
>            Reporter: Jan Stamer
>            Assignee: Jared Bunting
>            Priority: Minor
>         Attachments: ThreadContext.java.patch
>
>
> Sometimes it is useful to log the user name. That way it can easily be traced 
> which user faced an exception or where an error occurred.
> The Mapped Diagnostic Context (MDC) of SLF4J can be used for that as it uses 
> the same mechanisms as Shiro already does. That way one can use 
> %X{shiroSubject} in the log pattern. This will then be filled with the 
> principal name or left blank.
> Remark: No additional libraries or anything are necessary for that. All 
> that's needed is SLF4J and that's there already.

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