Description:

There is a bug report 4 years ago. It's not fixed yet. It occurs to me now.

This is my configuration:

<rollingPolicy class="ch.qos.logback.core.rolling.MyTimeBasedRollingPolicy">
<fileNamePattern>${baseLogPath}/logs/app.%d{yyyy-MM-dd}.log.gz</fileNamePattern>
</rollingPolicy>

The log file will roll and compress at midnight normally. but, the compression is omitted if the application is not running at rolling time .

The application will restart manually at next day , but the elapsed log file will not be compressed.

Solution:

I have an idea and have put it into practice to fix this problem.

I add a property, say compressElapsedPeriodFileOnStart , to TimeBasedRollingPolicy ,default true.

It compress the elapsed period log file, as below :

1 calculate the rolling period

2. generate the elapsed period log file name

3. compress it

It works well for me, there is a better way ? I will push a PR if no.