naive example of using celluloid

gistfile1.rb

require 'celluloid'
require 'open-uri'
require 'digest/sha1'

URL_LIST = %w{http://yandex.ru http://bing.com}

class UrlChecksumGen
  include Celluloid

  attr_reader :digest

  def initialize(dest)
    @dest = dest
  end

  def gen_digest
    data = open(@dest).read

    @digest = Digest::SHA1.hexdigest data
  end

  def output(future)
    puts future.value
  end
end


URL_LIST.each do |url|
  sha = UrlChecksumGen.new(url)
  future = sha.future :gen_digest
  sha.output future
end