[LOG4J2-3356] The sub module log4j-layout-template-json seems not properly configured to be deployed as a fragment host in OSGI

• Type: Bug
• Status: In Progress
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.17.1
• Component/s: JsonTemplateLayout

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.

Language

java

• Assignee: Volkan Yazici
• Reporter: ruffp
• Created: 20/Jan/22 09:26
• Updated: 04/Mar/22 19:34

Description

In the pom of the module we have:

<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>

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:

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

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).