crafterm / sprinkle

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Sprinkle is a software provisioning tool you can use to build remote servers with. eg. to install a Rails, or Sinatra stack on a brand new slice directly after its been created

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sprinkle / lib / sprinkle / configurable.rb
100644 31 lines (26 sloc) 0.783 kb
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module Sprinkle
  #--
  # TODO: Possible documentation?
  #++
  module Configurable #:nodoc:
    attr_accessor :delivery
    
    def defaults(deployment)
      defaults = deployment.defaults[self.class.name.split(/::/).last.downcase.to_sym]
      self.instance_eval(&defaults) if defaults
      @delivery = deployment.style
    end
    
    def assert_delivery
      raise 'Unknown command delivery target' unless @delivery
    end
    
    def method_missing(sym, *args, &block)
      unless args.empty? # mutate if not set
        @options ||= {}
        @options[sym] = *args unless @options[sym]
      end
 
      @options[sym] || @package.send(sym, *args, &block) # try the parents options if unknown
    end
    
    def option?(sym)
      !@options[sym].nil?
    end
  end
end