inheritance!

test.rb

module Mde

  def match_for_mde(mde, arclass_id, arclass_filename)
    rule = Parser.new(mde)
    es_query = Bar.new(rule, arclass_id, arclass_filename).es_query

    rest_call_for_truth(es_query)
  end

  def rest_call_for_truth(query)
    res = rest_client_stuff(query.to_json)

    if res == 'condition'
      true
    else
      false
    end
  end

  class QueryBuilder
    def initialize(rule, analysis_id, filename)
      self.rule = rule
      # .
      # .
      # .
      # more attr assignment
      # and generation of rule hash
    end
  end

  class Parser
    def initialize(rule)
      some_method_to_produce_rule(rule)
    end
  end
end

module MdeManager
  module Glue
    def self.included(base)
      base.send :include, Foo
    end
  end
end

class ARClass
  include MdeManager::Glue
end

class AWorkerSomewhere
  def self.perform(analysis_id)
    analysis = ARClass.find(analysis_id)
    rules = MDE_Rules.all
    rules.each do |rule|
      if analysis.match_for_mde(rule, analysis.id, analysis.filename)
        analysis.mdr_match(rule)
      end
    end
  end
end