gistfile1.txt

destroy_instance.rb:

#!/usr/bin/env ruby
EventBusWorker.new do |e|
  msg = e.publish 'destroy_instance', {:id => ARGV[1]}
  e.wait_for 'aws_destroyed', {:req => msg}
  e.wait_for 'scout_removed', {:req => msg}
end

aws_destroyed.rb:

EventBusWorker.new do |e|
  sub = e.subscribe('destroy_instance')
  sub.received do |msg|
    e.publish 'aws_destroying', {:id => msg.id, :req => msg}
    AWS::EC2.new.destroy :id
    e.publish 'aws_destroyed', {:id => msg.id, :req => msg}
  end