amqp_client.rb

require "rubygems"
require "amqp"

EventMachine.run do
  connection = AMQP.connect(:host => '127.0.0.1')
  channel  = AMQP::Channel.new(connection)

  low_queue    = channel.queue("low")
  high_queue    = channel.queue("high")
  exchange = channel.direct("")

  10.times do 
    exchange.publish "LOW", :routing_key => low_queue.name
  end

  10.times do 
    exchange.publish "HIGH", :routing_key => high_queue.name
  end
  
end