autobefore in Puppet

transition_fragment.rb

  # This type needs to implement an "autobefore" kind of behavior. Currently
  # the Puppet type system only supports autorequire, so we achieve autobefore
  # by hijacking autorequire.
  def autorequire(rel_catalog = nil)
    reqs = super

    [ @parameters[:prior_to].value,
      @parameters[:resource].value
    ].flatten.each do |rel|
      reqs << Puppet::Relationship::new(self, catalog.resource(rel.to_s))
    end

    reqs
  end