System calls with goliath

goliath.rb

require 'goliath'

module EventMachine
  module Synchrony
    # Fiber-aware EM.system
    #
    def self.system cmd, *args
      fiber = Fiber.current
      EM.system(cmd, *args){ |out, status| fiber.resume( [out, status] ) }
      Fiber.yield
    end
  end
end

class Deploy < Goliath::API
  def response(env)
    puts "Processing request"
    output, status = EM::Synchrony.system "sh", "-c", "sleep 10 ; echo 'hello world'"
    puts output
    [200, {}, output]
  end
end