Evented redis with evented http request

gistfile1.rb

EM.run do
  # Create both an evented and non evented redis handle
  @evented_redis     = EM::Protocols::Redis.connect
  @non_evented_redis = Redis.new

  # Setup lambda in order to properly rerun code using EventMachine's next_tick method
  (popper = lambda do
    @evented_redis.blpop("blpop:queue", 0) do |msg|
      url  = msg.last

      # Make the http request using the url sent through the message
      http = EventMachine::HttpRequest.new( url ).get

      # CALLBACKS
      http.errback { p 'Uh oh' }
      http.callback do
        # Send the response back to redis, I need to use non evented redis here
        # because I am unable to do the lpush using the evented redis handle
        # while inside the blpop block
        @non_evented_redis.lpush("responses", http.response)
      end # end callback

      # Call next tick
      EventMachine::next_tick(&popper)
    end # end blpop
  end).call
end