Artifact caching proxy activation in buildPlugin() shared pipeline function

[lemeurherve]

The artifact caching proxy is a mechanism we've put in place using nginx proxy in front of repo.jenkins-ci.org (our JFrog sponsored Artifactory instance) and Maven Central to cache artifacts download requests.

The main goals are to decrease the consumed bandwidth (many terabytes per month) and to increase Jenkins infrastructure reliability and resilience.

While this functionality was proposed as opt-in with an handful of plugins participating in the testing, we're planning to activate the artifact caching proxy for all plugins.

I've started a thread on the jenkinsci-dev mailing list to check if it's OK for everyone.
If there is no major objection after a delay of 24 hours, we'll merge this PR around 14:00 UTC on Thursday February 2 to switch this feature as opt-out for all plugins using the buildPlugin function from the shared pipeline library.

As the caches of these ACPs are warming up, the first plugin builds might take a little bit more time, but the following ones should be quicker.

In case you need for whatever reason to disable this mechanism (discouraged), you have two possibilities:

• on your pull request, add a skip-artifact-caching-proxy label
• in your Jenkinsfile, add useArtifactCachingProxy: false to the recommanded buildPlugin configuration, ex:

buildPlugin(
  useContainerAgent: true, // Set to `false` if you need to use Docker for containerized tests
  useArtifactCachingProxy: false,
  configurations: [
    [platform: 'linux', jdk: 17],
    [platform: 'windows', jdk: 11],
])

If you've got any questions or issues, please add them to this issue.

[lemeurherve]

As there were no objection, the PR has been merged, the artifact caching proxy is enabled for every plugin.

[jglick]

BTW are there separate tasks to enable it for jenkins, bom, etc.?

[dduportal]

BTW are there separate tasks to enable it for jenkins, bom, etc.?

Not yet, we are drafting the plan for it. Most probably we'll continue with the bom.

[lemeurherve]

Working as expected, closing this issue.