[logback-dev] [JIRA] Assigned: (LBCORE-242) log rollover should be configurable using %d multiple times in file name pattern

Ceki Gulcu (JIRA) noreply-jira at qos.ch
Wed Dec 21 11:42:13 CET 2011


     [ http://jira.qos.ch/browse/LBCORE-242?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ceki Gulcu reassigned LBCORE-242:
---------------------------------

    Assignee: Ceki Gulcu  (was: Logback dev list)

> log rollover should be configurable using %d multiple times in file name pattern
> --------------------------------------------------------------------------------
>
>                 Key: LBCORE-242
>                 URL: http://jira.qos.ch/browse/LBCORE-242
>             Project: logback-core
>          Issue Type: Improvement
>          Components: Rolling
>    Affects Versions: 1.0.0
>            Reporter: Thomas Corte
>            Assignee: Ceki Gulcu
>
> Trying to configure a log rollover with logs being *rolled daily* and put into a directory named "yyyy-MM", i.e. one folder for each *month* containing that month's logs, I'm using the following appender config:
> {noformat}
>   <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
>     <file>app.log</file>
>     <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
>       <!-- rollover every minute -->
>       <fileNamePattern%d{yyyy-MM}/app.%d{yyyy-MM-dd}.log</fileNamePattern>
>     </rollingPolicy>
>     <encoder>
>       <pattern>%d{"yyyy-MM-dd HH:mm:ss,SSS"} [%thread] %-5level %logger{36} - %msg%n%xEx</pattern>
>     </encoder>
>   </appender>
> {noformat}
> However, it seems as if the current logback implementation merely considers the first %d specification, which leads to a log rotation only once per month instead of the desired once per day frequency.
> I figure this is because via %d, the log rotation frequency and the file name pattern are somewhat tied together and seemingly can't be specified independently.
> It would be nice if either multiple %d specifiers would be supported, with an option to specify which one should be considered for the rollover period.
> Even better, it might be a good idea to support the rollover period to be specified separately and independently from the file name pattern; arguably, using the file name patterns for both is somewhat convenient, but violates the principle of "separation of concerns".

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