callback_example.rb

module Loggable
  include ActiveSupport::Callbacks

  define_callbacks :before_process, :after_process

  protected

  # Need to consider how to access in the method params
  def before_process
    @logger.info "Method name before message with: #{@params}"
  end

  def after_process
    @logger.info "Method name after message with: #{@params}"
  end
end

module Processable
  module ClassMethods
    public_methods.each do |method|
      set_callback :before_process, :before, method.to_sym
      set_callback :after_process, :after, method.to_sym
    end
  end

  def self.included(receiver)
    receiver.extend         ClassMethods
    receiver.send :include, InstanceMethods
  end
end

class Importer
  include Processable
  
  def self.import
    puts "Import some stuff"
  end
end

# importer = Importer.import
#=> "Method name before message with: nil"
#=> "Import some stuff"
#=> "Method name after message with: nil"