librato/librato-rails

$LOAD_PATH.unshift(File.join(File.dirname(__FILE__), '..', 'lib'))
require 'benchmark/ips'

require 'forwardable'

class Receiver
  def doit
    "done did it"
  end
end

class SenderOne
  def doit
    receiver.doit
  end

  private

  def receiver
    @receiver ||= Receiver.new
  end
end

class SenderTwo
  extend Forwardable
  def_delegators :receiver, :doit

  private

  def receiver
    @receiver ||= Receiver.new
  end
end

class SenderThree
  extend Forwardable
  def_delegators :sender, :doit

  private

  def sender
    @sender ||= SenderTwo.new
  end

end

sender_one    = SenderOne.new
sender_two    = SenderTwo.new
sender_three  = SenderThree.new

Benchmark.ips do |x|
  x.report('local method') do
    sender_one.doit
  end

  x.report('delegation') do
    sender_two.doit
  end

  x.report('nested delegation') do
    sender_three.doit
  end
end