Structs and attributes: wrapping a Struct in a class

change.rb

require 'ostruct'

module AutomateSoup
  ##
  # Class to represent operations on a change.
  #
  class Change
    def initialize(hash)
      @source = OpenStruct.new hash
    end

    ##
    # Delegate method missing to the underlying OpenStruct
    #
    def method_missing(method, *args, &block)
      @source.send(method, *args, &block)
    end

    ##
    # Determing the current stage of the change.
    # @return [AutomateSoup::Stage] the current stage.
    def current_stage
      Stage.new @source.stages.last
    end

    ##
    # Determine if the change has been delivered successfully.
    #
    # @return [Boolean] if this change is delivered
    def delivered?
      (current_stage.stage.eql?('delivered') &&
        current_stage.status.eql?('passed') &&
        !AutomateSoup.url.nil? &&
        !AutomateSoup.credentials.nil?)
    end
  end
end

main.rb

change = soup.change
if wait && !change.approvable? && !change.deliverable?
  times = 1
  while times <= retries
    change = soup.change
    break if change.approvable?
    return false if change.current_stage.failed?
    puts "Stage #{change.current_stage.stage}: #{change.current_stage.status} retries #{times}/#{retries}"
    sleep timeout
    times += 1
  end
end