Problem statement

Consider plugins A and B.

A has an optional dependency to B.

B exposes an extension point called B.

A contains an @Extension(optional=true) or an @OptionalExtension(requiresPlugins = "B") (when using the variant plugin)
and has public class A extends B.

Set up a new Jenkins instance
Install plugin A
Install plugin B
Check groovy console ExtensionList.lookup(B.class)
An empty list is returned. Expected to see class A singleton.

After restarting the Jenkins instance, class A singleton is listed properly.

Prior/related work

~~JENKINS-19976~~ fixed classloading in this kind of situation
JENKINS-19508 is proposing to eliminate this use case altogether
JENKINS-49026 is a consequence of this problem

relates to

JENKINS-49026 Plugins are not installed in right order in case of optional dependency

Open

JENKINS-19508 Replace @Extension(optional=true) and optional dependencies with bridge plugins

Open

JENKINS-19976 Cannot load a class in depended plugin after install before restart

Resolved

JENKINS-14392 Optional Extensions should be reloaded when dependencies are dynamically loaded

Open

links to

CloudBees Internal TIGER-4517

Core PR #3370

(1 links to)

Assignee:: Vincent Latombe

Reporter:: Vincent Latombe

Votes:: 0 Vote for this issue

Watchers:: 3 Start watching this issue

Created:: 2018-03-22 10:55

Updated:: 2019-12-10 17:23

Resolved:: 2018-06-11 19:30

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Problem statement

Prior/related work

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