Difference in behavior of PluginWrapper.getDependencies() and UpdateSite.Plugin.dependencies

[Brian Ray]

[Originally posted on Jenkins Users ...]

Can anybody explain the difference in behavior between these two APIs? The only thing that I can make out is that UpdateSite's dependency properties seem to mirror exactly the dependencies declared in each plugin's MANIFEST.MF file. The PluginWrapper APIs usually return more dependencies, but the nature of the "extra" dependencies returned is unclear. I thought perhaps it was transitive dependencies but tracing 2nd- and N-order dependencies of a few plugins by hand didn't seem to reflect that--either that or maybe I lost my way in the dependency tree.

Here's an example console script:

final plug = 'nodelabelparameter'
println "Plugin-Plugin Dependencies for $plug:\n"

println 'PluginManager/PluginWrapper'
println '-' * 80
println Jenkins.instance.pluginManager.getPlugin(plug).dependencies
println Jenkins.instance.pluginManager.getPlugin(plug).optionalDependencies

println '\nUpdateCenter/UpdateSite.Plugin'
println '-' * 80
println Jenkins.instance.updateCenter.getPlugin(plug).dependencies
println Jenkins.instance.updateCenter.getPlugin(plug).optionalDependencies

println '\nUpdateCenter/UpdateSite.Plugin alt'
println '-' * 80
println Jenkins.instance.updateCenter.getPlugin(plug).getNeededDependencies()

And output:

Plugin-Plugin Dependencies for nodelabelparameter:

PluginManager/PluginWrapper
--------------------------------------------------------------------------------
[token-macro (1.9), jquery (1.7.2-1), parameterized-trigger (2.22;resolution:=optional), matrix-auth (1.0.2), windows-slaves (1.0), antisamy-markup-formatter (1.0), matrix-project (1.0), junit (1.0)]
[parameterized-trigger (2.22;resolution:=optional), matrix-auth (1.0.2), windows-slaves (1.0), antisamy-markup-formatter (1.0), matrix-project (1.0), junit (1.0)]

UpdateCenter/UpdateSite.Plugin
--------------------------------------------------------------------------------
[token-macro:1.9, jquery:1.7.2-1]
[parameterized-trigger:2.22]

UpdateCenter/UpdateSite.Plugin alt
--------------------------------------------------------------------------------
[]

[Jesse Glick]

On Wed, Aug 19, 2015 at 2:51 PM, Brian Ray <be_...@sbcglobal.net> wrote:
> The PluginWrapper APIs usually return more dependencies,
> but the nature of the "extra" dependencies returned is unclear.

https://github.com/jenkinsci/jenkins/blob/fd83a285b3b1560ba19122ff33edc522de7027f0/core/src/main/java/hudson/ClassicPluginStrategy.java#L238-L239

[Brian Ray]

Ah, the previously-core plugins. Makes sense now.

Thanks,