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https://issues.apache.org/jira/browse/LOG4J2-435?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15037914#comment-15037914
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Paul Benedict commented on LOG4J2-435:
--------------------------------------
It's a very interesting idea to use scripting. There is precedent for this
choice: Spring Expression Language and Java Unified Expression Language. Have
you guys just considered taking advantage of JUEL since most of your use cases
are in an EE container? The {{javax.servlet.jsp.el}} package contains the
interface to pop in expressions for evaluation. If you guys provided a standard
{{LogStatusContext}} where the date, size, and other attributes could be
accessed, you could remove all the {{IfXXX}} variant tags and allow people to
directly write expressions.
Short example:
Presume that {{filename}}, {{daysOld}}, {{fileSizeGB}}, and {{fileCount}} are
context objects injected into the evaluator.
{code:xml}
<Delete basePath="${baseDir}/archives" maxDepth="2" condition="filename ~=
'*/app-*.log.gz' and daysOld >= 30 and (fileSizeGB >= 100 or fileCount >= 10)">
{code}
This to me is much more palatable than "tag soup" configuration. My point is to
drive expressions straight into your action/command tags. That's declarative,
straightforward, and easy to maintain.
> Feature request: auto-delete older log files
> ---------------------------------------------
>
> Key: LOG4J2-435
> URL: https://issues.apache.org/jira/browse/LOG4J2-435
> Project: Log4j 2
> Issue Type: Improvement
> Reporter: Arkin Yetis
> Assignee: Remko Popma
> Labels: Rollover
> Fix For: 2.5
>
> Attachments: LimitingRolloverStrategy.java, SizeParser.java
>
>
> Original description:
> {quote}
> DefaultRolloverStrategy max attribute only applies if you have a %i in the
> file pattern. This request is to enhance DefaultRolloverStrategy or another
> appropriate component to allow a max number of files limit to apply across
> days/months/years when a filePattern includes a date pattern.
> {quote}
> ----
> One of the most requested features is to add the ability to Log4j to "clean
> up" older log files. This usually means deleting these files, although it
> could also mean moving them to a different location, or some combination of
> these.
> Users have different requirements for selecting the files to clean up. A
> common request is the ability to keep the last X number of log files. This
> works well if rollover is only date based but may give undesired results with
> size based rollover.
> Another factor to consider is that the directory containing the log files may
> contain the log files for multiple appenders, or even files unrelated to
> logging.
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