Question

How do I list all the controllers/services of a grails plugin.
Or
How do I know the pluin name of a given GrailsApplication class.

Answer 1

Artifacts from plugins are annotated with the GrailsPlugin annotation to add metadata about their source. So you can use that to find whether the controller/service/etc. is from the application or a plugin like this:

import org.codehaus.groovy.grails.plugins.metadata.GrailsPlugin

for (type in ['controller', 'service']) {

   for (artifactClass in ctx.grailsApplication."${type}Classes") {

      def clazz = artifactClass.clazz

      def annotation = clazz.getAnnotation(GrailsPlugin)
      if (annotation) {
         println "$type $clazz.name from plugin '${annotation.name()}'"
      }
      else {
         println "$type $clazz.name from application"
      }
   }
}