[logback-dev] [JIRA] Updated: (LBCORE-154) Use of default values in appender-refs

David Harrigan (JIRA) noreply-jira at qos.ch
Fri Jul 2 17:05:16 CEST 2010

     [ http://jira.qos.ch/browse/LBCORE-154?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

David Harrigan updated LBCORE-154:

    Attachment: 0001-Fix-for-http-jira.qos.ch-browse-LBCORE-154.patch


Now that I have some time, please find attached a patch for this request.


> Use of default values in appender-refs
> --------------------------------------
>                 Key: LBCORE-154
>                 URL: http://jira.qos.ch/browse/LBCORE-154
>             Project: logback-core
>          Issue Type: Improvement
>          Components: Appender
>         Environment: All
>            Reporter: David Harrigan
>            Assignee: Logback dev list
>         Attachments: 0001-Fix-for-http-jira.qos.ch-browse-LBCORE-154.patch
> This is referenced also here: http://old.nabble.com/Appender-Ref-Default-Value-to28605941.html
> Please can we have the ability to specify default values for appender-refs. I have a use case where we need to "bake-in" the appender during build-time. I can do this at the moment for logger level by bringing in a property file (called override.properties) that can reset the logging level (which is dependent on the deployment environment and other factors).
> Here is a little example:
>     <property resource="override.properties" />
>     <logger name="bar.foo" level="${bar.foo.log.level:-info}" additivity="false">
>         <appender-ref ref="console"/>
>     </logger>
> The bar.foo.log.level is defined in the override.properties file. The correct file gets inserted for each build type.
> I would like to do the following as well:
>     <logger name="bar.foo" level="${bar.foo.log.level:-info}" additivity="false">
>         <appender-ref ref="${bar.foo.log.appender:-console}"/>
>     </logger>
> So that I can tell the override where to log to (console for development or log file, or smtp, or jms, or db for other environments).
> This would be so neato if implemented :-)
> Thank you.
> -=david=-

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