[jira] [Commented] (LOG4J2-1185) Ability to change the fileName dynamically in RollingFileAppender

["Christian Vent (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/LOG4J2-1185?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16064389#comment-16064389 ] 

Christian Vent commented on LOG4J2-1185:
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Hey guys, thanks fouryour help. `CronTriggeringPolicy` did the job for me, but I'd still prefer `TimeBasedTriggeringPolicy` since I don't a reason to create additional threads for the rollover, if I don't need them.

> Ability to change the fileName dynamically in RollingFileAppender
> -----------------------------------------------------------------
>
>                 Key: LOG4J2-1185
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-1185
>             Project: Log4j 2
>          Issue Type: New Feature
>          Components: Appenders
>    Affects Versions: 2.1
>            Reporter: Dhwaneet Bhatt
>            Assignee: Ralph Goers
>             Fix For: 2.8
>
>
> Right now RollingFileAppender rolls over the current file with fileName to the one generated by FilePattern. However, logging always continues in the same fileName i.e. fileName once created cannot be changed.
> Property Substitution is only once during initialization, fileName is never changed after RollingFileManager is initialized. The RollingFileManager is very tightly tied up to the fileName attribute.
> Consider that I want to name my log files like this using RollingFileAppender:
> mylog-2015-10-30.log
> mylog-2015-10-29.log
> mylog-2015-10-28.log
> There is no good way to achieve this, because even after rolling over the file, the fileName would still remain the same. If I initialized my fileName using $\{date:yyyy-MM-dd\}, date would be substituted only once during initialization and it would never change, always continue to log in the same log file (until I restart my application).



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