How to set labels on images defined by Generators

[davidecavestro]

Hi, I want to migrate from images to generators the config for generating the image of a spring-boot app - as per xml config docs - given that debugging jkube I saw Spring Boot layered jars are detected by the generator named spring-boot.

So this way I can control everything except the labels of the generated image,
i.e. this way the labels are not set and looking at jkube code I can't find any support for a way to define labels within the image through generators (please note here we aren't talking about labels of k8s descriptors)

...
<generator>
  <config>
    <spring-boot>
      <color>always</color>
      <from>registry.access.redhat.com/ubi8/openjdk-17-runtime</from> <!-- control base for generated image name -->
      <name>my/image:0.0.1</name>                                     <!-- control generated image name -->
      <targetDir>/path/to/my/app</targetDir>                          <!-- control app folder within generated image -->
      <labels>foo=abc,bar=123</labels>                                <!-- THIS DOESN?T WORK: how can I do this? -->
    </spring-boot>
  </config>
</generator>
...

ps: changes depicted above on the spring-boot quickstart of the kubernetes maven plugin can be tested with mvn package k8s:build -Pkubernetes

[rohanKanojia]

I checked the code but it doesn't look like we support this functionality at the moment.

I can see that in BaseGenerator we are adding some opinionated labels by checking the project configuration:

https://github.com/eclipse/jkube/blob/2ebeabe2ae6ebbcd52e0fd9323607892bcb831d4/jkube-kit/generator/api/src/main/java/org/eclipse/jkube/generator/api/support/BaseGenerator.java#L258-L289

Shall we create an issue for this? I think we can plugin it some code to read labels configured by user in this method to get desired result.

[davidecavestro]

It would be great. From the UX perspective, it may be similar to the usage of jkube.generator.tags.
(please tell me if I have to create the issue)

[rohanKanojia]

@davidecavestro : that would be great!

[davidecavestro]

just opened #2885