[logback-dev] [JIRA] Commented: (LBCLASSIC-131) Missing Import-Package declaration in logback-classic causes problem with RollingFileAppender

[Michal Příhoda (JIRA)]

    [ http://jira.qos.ch/browse/LBCLASSIC-131?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=11943#action_11943 ] 

Michal Příhoda commented on LBCLASSIC-131:
------------------------------------------

This particular issue seems to be fixed for some time already, but the same problem manifests with CyclicBufferAppender in ch.qos.logback.core.read - classic does not import this package, which makes the appender unusable in OSGi.

The fix is the same - add the package ch.qos.logback.core.read to the Import-Package statement. Confirmed working.

> Missing Import-Package declaration in logback-classic causes problem with RollingFileAppender
> ---------------------------------------------------------------------------------------------
>
>                 Key: LBCLASSIC-131
>                 URL: http://jira.qos.ch/browse/LBCLASSIC-131
>             Project: logback-classic
>          Issue Type: Bug
>    Affects Versions: 0.9.15
>         Environment: OSGi Service Platform Release 4 
>            Reporter: Pavol Juhos
>            Assignee: Logback dev list
>
> In OSGi environment logback-core will correctly try to use the class-loader of logback-classic bundle to load classes of the selected Appenders. This however means that logback-classic needs to have visibility to the requested Appender classes. Since RollingFileAppender is located in a separate package "ch.qos.logback.core.rolling" and not explicitly referenced from logback-classic code, the respective Import-Package declaration will not be generated automatically by the BND tool (embedded in maven-bundle-plugin). 
> In order to avoid ClassNotFound exceptions when trying to use RollingFileAppender the appropriate Import-Package declarations have to be added explicitly to the configuration of maven-bundle-plugin in logback-classic POM.
> The current <Import-Package> settings in maven-bundle-plugin configuration: 
>             <Import-Package>sun.reflect;resolution:=optional,
>                             javax.jms;resolution:=optional,
>                             *
>             </Import-Package>
> Suggested update:
>             <Import-Package>sun.reflect;resolution:=optional,
>                             javax.jms;resolution:=optional,
>                             ch.qos.logback.core.rolling, 
>                             ch.qos.logback.core.rolling.helper, 
>                             *
>             </Import-Package>
> Please consider also to implement the related issue LBCLASSIC-121 when fixing this defect.

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