Issue
Jenkins had 600+ plugins, in the real system, we are used to install lots of plugins.
And sometimes, we want to remove some plugins to make system more clean or replace with another mature plugin (different name).
This needs to make sure no one/no job use those plugins or I need to notify them.
Are there any ways in configuration or somewhere in Jenkins system to know whether the plugin is used by any jobs ?
UPDATE 2013 Based on the answer below, I maintain the simple "plugin:keyword" mapping, like
plugin_keys = {
"git":'scm class="hudson.plugins.git.GitSCM"',
"copyartifact":"hudson.plugins.copyartifact.CopyArtifact",
# and more
}
And search the plugin keyword from the config.xml
, all the information (plugins,jobs,config) can be fetched via jenkins remote API
it works for me.
UPDATE 2014.04.26 Later jenkins version, it seems the config.xml is changed to have plugin name there directly
Like
<com.coravy.hudson.plugins.github.GithubProjectProperty plugin="[email protected]">
<hudson.plugins.throttleconcurrents.ThrottleJobProperty plugin="[email protected]">
<hudson.plugins.disk__usage.DiskUsageProperty plugin="[email protected]"/>
<scm class="hudson.plugins.git.GitSCM" plugin="[email protected]">
Therefore I just check this plugin="<plugin name>"
in config.xml
, it works again
UPDATE 2014.05.05
See complete script in gist jenkins-stats.py
UPDATE 2018.6.7
There is plugin usage plugin support this (no REST API yet)
Solution
Here are 2 ways to find that information.
The easiest is probably to to grep the job config files:
E.g. when you know the class name (or package name) of your plugin (e.g. org.jenkinsci.plugins.unity3d.Unity3dBuilder):
find $JENKINS_HOME/jobs/ -name config.xml -maxdepth 2 | xargs grep Unity3dBuilder
Another is to use something like the scriptler plugin, but then you need more information about where the plugin is used in the build.
import hudson.model.*
import hudson.maven.*
import hudson.tasks.*
for(item in Hudson.instance.items) {
//println("JOB : "+item.name);
for (builder in item.builders){
if (builder instanceof org.jenkinsci.plugins.unity3d.Unity3dBuilder) {
println(">>" + item.name.padRight(50, " ") + "\t UNITY3D BUILDER with " + builder.unity3dName);
}
}
}
}
Update: here's a small scriplet script that might ease you finding the relevant class names. It can certainly be improved:
import jenkins.model.*;
import hudson.ExtensionFinder;
List<ExtensionFinder> finders = Jenkins.instance.getExtensionList(ExtensionFinder.class);
for (finder in finders) {
println(">>> " + finder);
if (finder instanceof hudson.ExtensionFinder.GuiceFinder) {
println(finder.annotations.size());
for (key in finder.annotations.keySet()) {
println(key);
}
} else if (finder instanceof ruby.RubyExtensionFinder) {
println(finder.parsedPlugins.size());
for (plugin in finder.parsedPlugins) {
for (extension in plugin.extensions) {
println("ruby wrapper for " + extension.instance.clazz);
}
}
} else if (finder instanceof hudson.cli.declarative.CLIRegisterer) {
println(finder.discover(Jenkins.instance));
for (extension in finder.discover(Jenkins.instance)) {
println("CLI wrapper for " + extension.instance.class);
// not sure what to do with those
}
} else {
println("UNKNOWN FINDER TYPE");
}
}
(inlined scriplet from my original listJenkinsExtensions submission to http://scriptlerweb.appspot.com which seems down)
Don't forget to backup!
Answered By - coffeebreaks