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From "Remko Popma (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LOG4J2-741) Reinstate the package attribute for discovering custom plugins
Date Fri, 25 Jul 2014 13:14:38 GMT

    [ https://issues.apache.org/jira/browse/LOG4J2-741?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14074367#comment-14074367
] 

Remko Popma commented on LOG4J2-741:
------------------------------------

Matt, you assigned yourself to this issue when you were still thinking of an annotation processor-based
solution. I think reverting the old code (if that is possible) is preferable as it has a track
record and it would avoid adding runtime dependencies.

I can work on a solution along those lines tomorrow (Saturday Japan time). In that case, I
would really like one or more people to help with a review though. On the other hand, you
already picked up this item and I don't want to be stepping on your toes. How would you like
to proceed with this issue?

> Reinstate the package attribute for discovering custom plugins
> --------------------------------------------------------------
>
>                 Key: LOG4J2-741
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-741
>             Project: Log4j 2
>          Issue Type: Improvement
>          Components: Core
>    Affects Versions: 2.0, 2.0-rc2
>            Reporter: Remko Popma
>            Assignee: Matt Sicker
>            Priority: Blocker
>             Fix For: 2.0.1
>
>         Attachments: LOG4J2-741-patch.txt
>
>
> Several people reported problems with their custom plugins no longer being recognized
by log4j2. See LOG4J2-673 and [this StackOverflow question|http://stackoverflow.com/questions/24918810/log4j2-configuration-will-not-load-custom-pattern-converter].
> Plugins created before the annotation processor was added to log4j2 (all plugins created
with 2.0-rc1 and earlier) may not have a {{META-INF/org/apache/logging/log4j/core/config/plugins/Log4j2Plugins.dat}}
file.
> Previously plugins without this metadata file could still be found if the user specified
their custom plugin package(s) in the {{packages}} attribute of the {{<Configuration>}}
element in their log4j2.xml configuration file.
> However, since 2.0-rc2, the {{packages}} configuration attribute was disabled; users
may still specify a value, but log4j2 will no longer use this value to try to load custom
plugins. This causes problems for custom plugins built before the annotation processor was
added to log4j2, as well as custom plugins that are built in an environment where the annotation
processor does not work (for example, most IDEs require some setting changes to enable annotation
processing).
> This Jira ticket is to reactivate the packages configuration attribute. 



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