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Aircraft
的Aircraft::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