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

[Pavol Juhos (JIRA)]

Missing Import-Package declaration in logback-classic causes problem with RollingFileAppender
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                 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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