action-banchmark around_filter (ver2)

benchmark.rb

class BenchmarkFilter
  def filter(controller)
    timer = Time.now
    Rails.logger.debug do
      "- Action #{controller.action_name} started. |"
    end
    
    yield
    elaped_time = Time.now - timer
    Rails.logger.debug do
      "- Action #{controller.action_name} finished in %0.3sec" % elaped_time
    end
  end
end