Re: [logback-user] Is 5 minute file rollover possible?

24 Apr 2012

      On 04/12/2012 02:11 PM, Andreas Kruthoff wrote:
...
Is it possible to configure logback to rollover every 5 minutes, or
every 15 minutes? How would I configure this?
thanks for any suggestions
-andreas
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The following solution worked for me:

1. logback.xml, write all data to a file, 1-minute rollover.

...
<appender name="DATA-FILE" class="MyMessageAppender">
   <file>file.csv</file>
   <encoder>
     <pattern>%msg</pattern>
   </encoder>
   <rollingPolicy
class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
     <fileNamePattern>file-%d{yyyyMMdd-HHmm}.csv</fileNamePattern>
     <cleanHistoryOnStart>true</cleanHistoryOnStart>
     <maxHistory>10</maxHistory>
   </rollingPolicy>
</appender>

<logger name="DATA" level="INFO" additivity="false">
   <appender-ref ref="DATA-FILE"/>
</logger>
...

2. MyMessageAppender, (real) rollover i.e. every 5 minutes.

public class MyMessageAppender<E> extends RollingFileAppender<E> {
   private int interval = 0; // minutes
   @Override
   public void rollover() {
     if (this.interval % 5 == 0) {
       super.rollover();
       this.interval = 0;
     }
     this.interval++;
   }
}

That's it, file.csv is rolled over every 5 minutes.

cheers

-andreas

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