我有一个建立在 Sinatra 基础上的 ruby 网络/数据服务器应用程序。我正在添加 EventMachine 和 em-websocket，以便我可以进行异步数据传输连接。
#! /usr/bin/env ruby
require 'yajl'
require 'json'
require 'em-websocket'
require 'sinatra/base'
require 'thin'
require './Actors/DataProvider.rb'
my_host = '10.2.56.87'
my_web_port = '4004'
my_web_sock = '8008'
EventMachine.epoll # choose kernel epoll over select for deterministic execution under load
EventMachine.run do
class SinatraApp < Sinatra::Base
configure do
set :bind, '10.2.56.87'
set :port, '4004'
end
encoder = Yajl::Encoder.new
communicator = DataProvider.new( encoder )
get '/' do
redirect '/index-work.html'
end
before do
content_type 'application/json'
end
post '/auth' do
end
post '/data/:id' do
puts 'got d i '
end
end
EventMachine::WebSocket.start( :host => my_host, :port => my_web_sock ) do | ws |
ws.onopen do
end
ws.onmessage do
end
ws.onclose do
end
end
begin
SinatraApp.run!
rescue => ex
puts "#{ ex.class}: #{ ex.message }"
end
end
瘦服务器在为 Sinatra 服务时运行良好，但现在我添加了 EM 基础，会发生以下情况：
/usr/local/rvm/gems/ruby-1.9.3-p286/gems/thin-2.0.0.pre/lib/thin/server.rb:192:in `block (2 levels) in start': undefined method `attach_server' for EventMachine:Module (NoMethodError)
from /usr/local/rvm/gems/ruby-1.9.3-p286/gems/thin-2.0.0.pre/lib/thin/server.rb:191:in `each'
from /usr/local/rvm/gems/ruby-1.9.3-p286/gems/thin-2.0.0.pre/lib/thin/server.rb:191:in `block in start'
from /usr/local/rvm/gems/ruby-1.9.3-p286/gems/thin-2.0.0.pre/lib/thin/backends/prefork.rb:30:in `block (2 levels) in start'
from /usr/local/rvm/gems/ruby-1.9.3-p286/gems/eventmachine-1.0.0/lib/eventmachine.rb:187:in `call'
from /usr/local/rvm/gems/ruby-1.9.3-p286/gems/eventmachine-1.0.0/lib/eventmachine.rb:187:in `run_machine'
from /usr/local/rvm/gems/ruby-1.9.3-p286/gems/eventmachine-1.0.0/lib/eventmachine.rb:187:in `run'
from /usr/local/rvm/gems/ruby-1.9.3-p286/gems/thin-2.0.0.pre/lib/thin/backends/prefork.rb:23:in `block in start'
from /usr/local/rvm/gems/ruby-1.9.3-p286/gems/preforker-0.1.1/lib/preforker/worker.rb:52:in `call'
from /usr/local/rvm/gems/ruby-1.9.3-p286/gems/preforker-0.1.1/lib/preforker/worker.rb:52:in `work'
from /usr/local/rvm/gems/ruby-1.9.3-p286/gems/preforker-0.1.1/lib/preforker.rb:129:in `block (2 levels) in spawn_missing_workers'
from (eval):6:in `block in fork'
from (eval):6:in `fork'
from (eval):6:in `fork'
from /usr/local/rvm/gems/ruby-1.9.3-p286/gems/preforker-0.1.1/lib/preforker.rb:126:in `block in spawn_missing_workers'
from /usr/local/rvm/gems/ruby-1.9.3-p286/gems/preforker-0.1.1/lib/preforker.rb:124:in `times'
from /usr/local/rvm/gems/ruby-1.9.3-p286/gems/preforker-0.1.1/lib/preforker.rb:124:in `spawn_missing_workers'
from /usr/local/rvm/gems/ruby-1.9.3-p286/gems/preforker-0.1.1/lib/preforker.rb:44:in `run'
from /usr/local/rvm/gems/ruby-1.9.3-p286/gems/thin-2.0.0.pre/lib/thin/backends/prefork.rb:37:in `start'
from /usr/local/rvm/gems/ruby-1.9.3-p286/gems/thin-2.0.0.pre/lib/thin/server.rb:187:in `start'
from /usr/local/rvm/gems/ruby-1.9.3-p286/gems/rack-1.4.1/lib/rack/handler/thin.rb:13:in `run'
from /usr/local/rvm/gems/ruby-1.9.3-p286/gems/sinatra-1.3.3/lib/sinatra/base.rb:1350:in `run!'
from /home/devel/ISF_Server/server-work.rb:122:in `block in <top (required)>'
from /usr/local/rvm/gems/ruby-1.9.3-p286/gems/eventmachine-1.0.0/lib/eventmachine.rb:187:in `call'
from /usr/local/rvm/gems/ruby-1.9.3-p286/gems/eventmachine-1.0.0/lib/eventmachine.rb:187:in `run_machine'
from /usr/local/rvm/gems/ruby-1.9.3-p286/gems/eventmachine-1.0.0/lib/eventmachine.rb:187:in `run'
from /home/devel/ISF_Server/server-work.rb:15:in `<top (required)>'
from /usr/local/rvm/gems/ruby-1.9.3-p286/gems/ruby-debug-ide-0.4.17.beta14/lib/ruby-debug-ide.rb:127:in `debug_load'
from /usr/local/rvm/gems/ruby-1.9.3-p286/gems/ruby-debug-ide-0.4.17.beta14/lib/ruby-debug-ide.rb:127:in `debug_program'
from /usr/local/rvm/gems/ruby-1.9.3-p286/gems/ruby-debug-ide-0.4.17.beta14/bin/rdebug-ide:118:in `<top (required)>'
from -e:1:in `load'
from -e:1:in `<main>'
我确实注意到 Thin gem 最近更新了，但 EM 还没有。这是我的下一个调查点。其他人发布了 Thin 不应从 EM.run 块中运行，但我正在构建的示例是这样的。