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https://issues.apache.org/jira/browse/LOG4J2-435?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15005216#comment-15005216
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Remko Popma commented on LOG4J2-435:
------------------------------------
Update: I am finding that Java 7's
[Files.walkFileTree|http://docs.oracle.com/javase/7/docs/api/java/nio/file/Files.html#walkFileTree(java.nio.file.Path,%20java.util.Set,%20int,%20java.nio.file.FileVisitor)]
API makes this relatively easy to implement.
Sample configuration snippet:
{code}
<Delete baseDir="${sys:user.home}/myapp/logs" maxDepth="2" followLinks="false">
<And>
<File path="*/myApp*.log.gz" />
<LastModified duration="7d" />
</And>
</Delete>
{code}
* {{maxDepth}} determines how deep to recurse from the base directory. The
default is 1: only scan files in the base directory itself.
* {{followLinks}} deals with symbolic links. Default is false: on a match, the
link is deleted, not the file it points to, and directory links are not
recursed into.
* _duration_: Supports the ISO8601 format, without Year or Month sections (like
Java 8
[java.time.Duration|https://docs.oracle.com/javase/8/docs/api/java/time/Duration.html#parse-java.lang.CharSequence-]).
Unlike in Java 8's Duration, negative periods and fractions are not supported.
In addition to the ISO8601 format, I also want to support a simplified format
that allows omitting the prefix 'P' and infix 'T', accepting values like
{{"7d"}} or {{"24H"}}.
* _Regular expressions_ are powerful but not easy to read or write. I will
support both regex matching and simple '*' and '?' wildcarts. Examples:
{code}
<!-- Regular expression: -->
<File regex=".*/myApp.*\\.log\\.gz" />
<!-- Simple path with wildcarts: -->
<File path="*/myApp*.log.gz" />
{code}
Now working on integrating this with RollingFileAppender, and add tests and
documentation. I will commit this soon. Feedback welcome.
> 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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