I have the Tornado server. It receives messages from websocket-connections. I need to run the worker function as a separate process and the worker should answer to client. The main idea is to work in a parallel mode. Something like this
def worker(ws,message):
input = json.loads(message)
t = input["time"]
time.sleep(t)
ws.write_message("Hello, World!"*int(t))
class MainHandler(tornado.web.RequestHandler):
def get(self):
self.render('index.html')
class WebSocket(tornado.websocket.WebSocketHandler):
def check_origin(self, origin):
return True
def open(self):
print("WebSocket opened")
self.application.webSocketsPool.append(self)
def on_message(self, message):
for key, value in enumerate(self.application.webSocketsPool):
if value == self:
p = Process(target=worker, args=(value.ws_connection,message,))
p.start()
def on_close(self):
print("WebSocket closed")
for key, value in enumerate(self.application.webSocketsPool):
if value == self:
del self.application.webSocketsPool[key]
Of course, this doesn't work because of pickling error. How to solve this problem?