Fix JacksonJsonProvider

[basil]

Fixes jenkinsci/gitlab-plugin#1206 by bundling the JAX-RS API JAR in the Jackson 2 API plugin. The new RealJenkinsRule-based test fails before this PR and passes with it. I have also written a functional test in jenkinsci/gitlab-plugin#1207 which fails before this PR and passes with it.

[basil]

@jenkinsci/jackson2-api-plugin-developers Could this please be merged and released? This problem is affecting multiple users of the GitLab plugin.

[basil]

Users have tested this fix successfully:

I have installed the incremental build and so far our builds are working again.

[stevenschlansker]

I tested:

Incremental build 2.13.1-243.v04a926c036e7 is available for testing. The incremental build is available from: https://repo.jenkins-ci.org/incrementals/org/jenkins-ci/plugins/jackson2-api/2.13.1-243.v04a926c036e7/

and confirm our Jenkins instance was unusable with latest release, and fixed by installing the snapshot with fix.

[jtnord]

The Jackson plugin is used by a huge amount of plugins.
Would including jaxrs here impact them negatively in any way? Especially worried about having an upgrade nightmare (or conflicting annotations caused by classloaders leading to issues esp bit not restricted to any future package renaming in Jakarta landscape.

To put it another way should jaxrs be a plugin that is optional here?

On my phone so sorry if this is short and I can not look into this myself right now

[basil]

I don't know, James.

[jtnord]

a quick search for both the old and new jax-rs artifactId showed very few hits in the Jenkins org.
My attemots to quickly use usage-in-plugins to find anything that used javax.ws.rs. failed miserably - so for now going to merge this as -is - but we may need to split the jaxrs-api out into a separate plugin in future that we optionally depend on. (I notcied at the same time we are also bundling the jaxb ri which is something for me to fix....

[dhruv-dave]

@jtnord when can we expect a new release?
Now that this pull request is merged, a new release will help us remove the work around we have put in place when dealing with gitlab-plugin issue: jenkinsci/gitlab-plugin#1206.
Thank you.

[rantoniuk]

Seems that this change somehow causes other side-effects - jenkinsci/jira-plugin#398 , @basil do you have an idea what can be the issue here?

[basil]

Seems that this change somehow causes other side-effects - jenkinsci/jira-plugin#398 , @basil do you have an idea what can be the issue here?

Similar report in jenkinsci/urltrigger-plugin#45. I'll look into it. Do you have steps to reproduce the problem?

[basil]

I think I see what is going on. I'm going to create a new JAX-RS 2 API plugin bundling Jersey 2, get that released, then remove JAX-RS from this plugin and add an optional dependency on the (new) JAX-RS 2 API plugin.

[basil]

I'm going to create a new JAX-RS 2 API plugin bundling Jersey 2

Hosting request submitted: jenkins-infra/repository-permissions-updater#2292