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https://issues.apache.org/jira/browse/LOG4J2-494?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15256348#comment-15256348
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Ralph Goers commented on LOG4J2-494:
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I have added the support for reconfiguration and in the process found some bugs
in the ConfigurationBuilder and in status logging. PropertiesConfigurations
were initializing too soon so wouldn't behave as desired in a
CompositeConfiguration. They do now.
Everyone feel free to review. The only thing left I have to do is documentation
and then I will merge this branch.
> Support composite configurations
> --------------------------------
>
> Key: LOG4J2-494
> URL: https://issues.apache.org/jira/browse/LOG4J2-494
> Project: Log4j 2
> Issue Type: New Feature
> Components: Configurators
> Affects Versions: 2.0-beta9
> Reporter: Ralph Goers
> Assignee: Ralph Goers
>
> Support was added to XMLConfiguration to allow XIncludes in the XML files.
> While this can be useful it does not allow for the use case where someone
> wants a default configuration and then a custom configuration to be merged
> with it.
> I am proposing creating a CompositeConfiguration class that accepts a comma
> separated list of configuration files. It would then use the Configuration
> factories to create the appropriate Configuration classes for each of the
> underlying files. It would then merge the Node hierarchies created by each
> into a single tree and then finally construct the actual configuration
> Objects from that tree.
> There are a few issues with this - for example each configuration can specify
> debug and verbose attributes, duplicate property settings, handling duplicate
> Appender names, etc. Most of these should be fairly easy to resolve.
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