How to gracefully stop a worker about beaneater HOT 2 CLOSED

#!/usr/bin/env ruby

require "rubygems"
require "bundler/setup"
require "beaneater"

BEANSTALKD_URL = "localhost:11300"
CONTROL_TUBE_NAME = "control-#{1}"
DEFAULT_TUBE_NAME = "test"

class Worker
  def process!
    beanstalk = Beaneater.new BEANSTALKD_URL

    beanstalk.jobs.register DEFAULT_TUBE_NAME do |job|
      10.times do |n|
        sleep 1
        puts n
      end
    end

    beanstalk.jobs.register CONTROL_TUBE_NAME do |job|
      puts "stop"
      stop
    end

    beanstalk.jobs.process!
    beanstalk.close
  end

  def stop!
    puts "hi"
    beanstalk = Beaneater.new BEANSTALKD_URL
    puts "step 1"
    tube = beanstalk.tubes[CONTROL_TUBE_NAME]
    puts "step 2"
    tube.put "-"
    puts "step 3"

    beanstalk.close
    puts "bye"
  end

  private
  def stop
    raise Beaneater::AbortProcessingError
  end
end

worker = Worker.new

Signal.trap "INT"  do
  worker.stop!
end

Signal.trap "TERM" do
  worker.stop!
end

worker.process!

puts "good night"