simple mco agent

netserve.rb

module MCollective
  module Agent
    class Netserv<RPC::Agent
      metadata :name        => "netserv",
               :description => "Network services for MCollective",
               :author      => "Ben Ford",
               :license     => "GPLv2",
               :version     => "1.1",
               :url         => "http://www.puppetlabs.com.com/education",
               :timeout     => 60

      # Basic motd server
      action "motd" do
        reply[:msg] = File.read('/etc/motd')
      end
      
      action "finger" do
        validate :user, String
        plan = "/home/#{request[:user]}/.plan"

        reply.fail "No .plan file for user" unless File.exists?(plan)

        # check all the validation(s) passed before doing any work
        return unless reply.statuscode == 0

        reply[:msg] = File.read(plan)
      end
    end
  end
end

In current mco, you'd omit the metadata hash