If you are like me,
- wondering why your dependabot PR builds are suddenly failing,
- unsure of the full implications of the latest plugin parent pom upgrade,
- and fear to waste time solving a problem that others have already solved,
- don’t trust your memory when having several plugins to maintain.
Here are my notes on how to move ahead.
Easily overlooked, the bump of plugin from 4.51 to 4.52 has a breaking change. The plugin build toolchain now requires at least Java 11 and at least Jenkins 2.361.
- Make sure to use the correct Jenkins baseline
- Disable builds with Java 8
In the plugin’s pom.xml,
- Update the parent.pom (in the
<parent>section) to 4.52
- Change the Jenkins base version (
<jenkins.version>property) to 2.361.4
- Make sure that 2.361.x BOM is used (
- Make sure that the pom.xml doesn’t force a Java 1.8 compilation
Make sure that Jenkinsfile specifies builds with the supported JDKs. (Relying on unknown defaults can bite you.) Your Jenkinsfile should look like this:
buildPlugin( useContainerAgent: true, configurations: [ [platform: 'linux', jdk: 17], [platform: 'windows', jdk: 11], ] )
If you don’t find the above mentioned elements in the pom.xml of the plugin you maintain, it is probably up for some tidying and “modernization”. See the Improve a Plugin Tutorial for hints.
If you have doubts or this checklist doesn’t work for you, don’t hesitate to discuss the matter on the developer mailing list.