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https://issues.apache.org/jira/browse/LOG4J2-3356?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17480123#comment-17480123
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Volkan Yazici commented on LOG4J2-3356:
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[~ruffp], I have passed your question to other maintainers and got the
impression that we currently don't posses the sufficient experience, knowledge,
and/or spare-time-to-work on OSGi. I suggest you to look for an answer in
Felix, Karaf, Pax Logging, etc. support channels. If you happen to find one and
it points out that something needs to be fixed in Log4j, you are more than
welcome to submit a PR.
> The sub module log4j-layout-template-json seems not properly configured to be
> deployed as a fragment host in OSGI
> -----------------------------------------------------------------------------------------------------------------
>
> Key: LOG4J2-3356
> URL: https://issues.apache.org/jira/browse/LOG4J2-3356
> Project: Log4j 2
> Issue Type: Bug
> Components: JsonTemplateLayout
> Affects Versions: 2.17.1
> Environment: Tested on ServiceMix (under Docker) 7.0.1, but it should
> be the same in Karaf 4.x
> I also tried to add the original log4j2-api and log4j-core in the same config
> but the fragment never gets resolved.
> Reporter: ruffp
> Priority: Major
>
> In the
> [pom|https://github.com/apache/logging-log4j2/blob/release-2.x/log4j-layout-template-json/pom.xml]
> of the module we have:
> {code:xml}
> <plugin>
> <groupId>org.apache.felix</groupId>
> <artifactId>maven-bundle-plugin</artifactId>
> <configuration>
> <instructions>
>
> <Fragment-Host>org.apache.logging.log4j.layout.template.json</Fragment-Host>
> <Export-Package>*</Export-Package>
> </instructions>
> </configuration>
> </plugin>
> {code}
> The Fragment host seems to refer to itself.
> When I tried to deploy this jar as a bundle with this in my
> startup.properties file:
> {noformat}
> mvn\:org.apache.logging.log4j/log4j-layout-template-json/2.17.1 = 5
> mvn\:org.ops4j.pax.logging/pax-logging-log4j2-extra/1.11.13 = 6
> mvn\:org.ops4j.pax.logging/pax-logging-api/1.11.13 = 8
> mvn\:org.ops4j.pax.logging/pax-logging-log4j2/1.11.13 = 8
> {noformat}
> And copying the lib in the "system" folder of karaf (I tried with ServiceMix
> 7.0.1).
> The bundle stays in status "Installed" and never resolves as the
> Fragment-Host refers to itself.
> I am not sure what values should be set in this as I am using Pax Logging,
> but for sure the Host does not seems correct to me (otherwise I would have
> created a PR).
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