cli_command_model.rb

module Jenkins::Model
  class CLICommand
    def self.short_description(short_description = nil)
      @short_description = short_description if short_description
      @short_description
    end

    def short_description
      @@short_description
    end

    def parse(args)
      @slop.parse(args)
    end

    def run
    end

    def usage
    end
  end
end

cli_command_proxy.rb

require 'core_ext/exception'

module Jenkins
  class Plugin
    class Proxies
      class CLICommand < Java.hudson.cli.CLICommand
        # this module makes this class act as a proxy
        include Jenkins::Plugin::Proxy

        # when the glue layer needs to create a wrapper, it calls this constructor
        # plugin refers to the Ruby plugin object, and the 'object' parameter
        # refers to JM::CLICommand that it's wrapping.
        def initialize(plugin, object)
          super(plugin, object)
        end

        def getShortDescription
          @object.short_description
        end

        # main(List<String> args, Locale locale, InputStream stdin, PrintStream stdout, PrintStream stderr)
        def main(args, locale, stdin, stdout, stderr)
          old_in, old_out, old_err = $stdin, $stdout, $stderr
          ret = -1
          begin
            $stdin, $stdout, $stderr = stdin, stdout, stderr
            @object.parse(args)
            ret = @object.run ? 0 : -1
          rescue InvalidOptionError, MissingOptionError
            $stderr.puts $!.message
            $stderr.puts @object.short_description
            $stderr.puts @object.usage
          rescue
            $stderr.puts $!.full_message
          ensure
            $stdin, $stdout, $stderr = old_in, old_out, old_err
          end
        end
      end
    end
  end
end

stream_events_command.rb

class StreamEventsCommand
  include Jenkins::Model::CLI::Command

  args do
    banner "stream-events [options]\n"
    on :format=, 'JSON or XML'
    on :v, :verbose, 'Enable verbose mode'
  end

  def run(opts)
    puts "Woo!" if opts.verbose?
  end
end