4

我使用async_sinatragem 来实现异步路由,但我在某处看到一篇文章说可以使用 Sinatra 的流 API 来代替async_sinatra此目的。可以使用流实现与以下相同的功能吗?

require 'em-hiredis'
require 'sinatra/async'

class App < Sinatra::Base
  register Sinatra::Async

  def redis
    @redis ||= EM::Hiredis.connect
  end

  aget '/' do
    redis.blpop('abcdef', 15).
      callback {|x| body "x=#{x}"}.
      errback {|e| body "e=#{e}"}
  end

  run! if app_file == $0
end
4

1 回答 1

3

回答我自己的问题:

require 'em-hiredis'
require 'sinatra/base'

class App < Sinatra::Base
  def redis
    @redis ||= EM::Hiredis.connect
  end

  get '/' do
    stream :keep_open do |out|
      redis.blpop('abcdef', 15).callback do |x|
        out << "x=#{x}"
        out.close
      end.errback do |e|
        out << "e=#{e}"
        out.close
      end
    end
  end

  run! if app_file == $0
end
于 2013-02-21T05:10:27.323 回答