gistfile1.rb

class Service
  def handler
    @handler ||= Kindly.with_service(self)
  end

  delegate :provision, :deprovision, to: :handler
end

class Kindly
  def self.with_service(service)
    service.handler_type.constantize.new(service)
  end 
end

class Cpanel
  def initialize(service)
    @lumberg = Lumberg::Whm::Server.new(host: service.server, hash: service.whm_hash)
  end
end

service.provision