gistfile1.rb

require 'eventmachine-distributed-notification'
require 'ruby_gntp'
require 'json'

# EM.post_distributed_notification('growl_notify', msg)

EM.run {
  EM.watch_distributed_notification('growl_notify') {|c|
    (class << c; self; end).send(:define_method, :notify) {|name, info|
      msg = info['data']
      GNTP.notify(
        :app_name => "notify",
        :title    => "Instant notification",
        :text     => msg
      )
    }
  }
}