[jira] [Commented] (KARAF-2453) Using features to extend existing configuration

["Jan Bernhardt (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/KARAF-2453?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14074446#comment-14074446 ] 

Jan Bernhardt commented on KARAF-2453:
--------------------------------------

Hi,

I am currently out of the office - returning on 25. August 2014.

For all urgent enquiries, please contact Bernd Trops <bt...@talend.com>.

Best regards
Jan Bernhardt



> Using features to extend existing configuration
> -----------------------------------------------
>
>                 Key: KARAF-2453
>                 URL: https://issues.apache.org/jira/browse/KARAF-2453
>             Project: Karaf
>          Issue Type: Improvement
>          Components: karaf-config, karaf-feature
>            Reporter: Jan Bernhardt
>            Assignee: Jean-Baptiste Onofré
>            Priority: Minor
>             Fix For: 4.0.0, 3.0.2, 2.4.1, 2.3.7
>
>
> for me it looks like that there is currently no way to extend an existing configuration file by installing a feature. But this is, what I would need for my use case and what would be great IMHO for other users as well.
> Here is my idea.
> If a property already exists within a configuration file this property should not be changed. But if a configuration file does not contain a certain key, this key=value should be added at the end of the configuration file.
> Example:
> <config name="com.foo.bar">
>   myProperty = myValue
> </config>
> If com.foo.bar.cfg does not contain myProperty before the feature containing this example was installed, then myProperty=myValue should be added to com.foo.bar.cfg file.
> This would make it possible to extend existing configuration files for custom needs. A general use-case could be logging. My application would like to add a logger configuration in case this logger is not configured already.
> 2. Example
> <config name="org.ops4j.pax.logging">
>   log4j.logger.org.apache.activemq.broker.util.LoggingBrokerPlugin=INFO, stdout, osgi:VmLogAppender
> </config>



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