我正在尝试运行一个处理飞行跟踪数据的进程,并将其主动转换为json字符串(连续循环进程),同时运行一个sinatra服务器,用这些json字符串响应get请求。我试图用线程来处理这个问题,但没有成功。如何并行运行这两个进程?以下是一些更详细的信息:
我有一个类Aircraft和一个名为AircraftAircraft::All对象数组。我有一个持续更新这个数组的方法,我想和一个sinatra服务器一起运行,该服务器用json格式的飞机列表响应get请求。
代码如下:

# starting the data stream from external process
IO.popen("./dump1090") do |data|
    block = ""
    # created sinatra server thread
    t1 = Thread.new do
        set :port, 8080
        set :environment, :production

        get '/aircrafts' do
            return_message = {}
            if !Aircraft::All.first.nil?
                return_message[:status] == 'success'
                return_message[:aircrafts] = message_maker
            else
                return_message[:status] = 'sorry - something went wrong'
                return_message[:aircrafts] = []
            end
            return_message.to_json
        end
    end
    # parsing the data in main thread -- the process
    # I want to run alongside the server (parse_block updates Aircraft::All)
    while line = data.gets
        if line.to_s.split('').first == '*'
          parse_block(block)
          puts block
          Aircraft::All.reject { |aircraft| Time.now.to_f - aircraft.contact_time > 30 }
          block = ""
        end
        block += line.to_s
  end
end

最佳答案

这里的主线程是sinatra应用程序,附加线程加载数据,这对我来说更为常见。

class Aircraft
  @aircrafts = {}

  def self.all
    @aircrafts
  end
end

Thread.new do
  no = 1
  while true
    Aircraft.all[no] = 'Boing'
    no += 1
    sleep(3)
  end
end

get '/aircrafts' do
  Aircraft.all.to_json
end

09-30 14:13
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