是否可以从Thin / Rack / Sinatra访问Ruby EventMachine通道？

require \'eventmachine\'
require \'em-http-request\'
require \'sinatra/base\'
require \'thin\'

class ServerClass < EventMachine::Connection
  def initialize(*args)
    # ruby singleton - store channel data in global hash
    ($channels ||= [])
  end

  def post_init
    puts \"initialized\"
    $cb.call(\"initialized\");
  end

  def receive_data(data)
    # got information from client connection
  end

  def channel_send(msg,channel)
    $channels[channel].send_data(msg)
  end

  def channels_send(msg)
    $channels.each{|channel| channel.send_data(msg)}
  end

  def unbind
    # puts user left
  end

end

EventMachine.run do
  $cb = EM.callback {|msg| puts msg #do something creative}
  $ems = EventMachine::start_server(\'0.0.0.0\',ServerClass,args)

  class App < Sinatra::Base
    set :public, File.dirname(__FILE__) + \'/public\'

    get \'/\' do
      erb :index          
    end

  end

  App.run!({:port => 3000})

end