龙卷风websocket错误代码：现有数据导出：无法调整对象大小

Question

python = 3.72    龙卷风= 5.1    客户订阅了市场数据，当推送的数据量很大时会发生此问题。如果同时推送两个数据，则可能会发生错误。

ERROR:asyncio:Future exception was never retrieved
    future: <Future finished exception=BufferError('Existing exports of data: object cannot be re-sized')>
    Traceback (most recent call last):
      File "F:\wechat\venv\lib\site-packages\tornado\gen.py", line 1141, in run
        yielded = self.gen.throw(*exc_info)
      File "F:\DeXun\QuoteWebsocket\controller\quoteHandler.py", line 36, in ticks
        yield self.sendm(message)
      File "F:\wechat\venv\lib\site-packages\tornado\gen.py", line 1133, in run
        value = future.result()
      File "C:\Users\rongjin03\AppData\Local\Programs\Python\Python37\lib\concurrent\futures\thread.py", line 57, in run
        result = self.fn(*self.args, **self.kwargs)
      File "F:\DeXun\QuoteWebsocket\controller\quoteHandler.py", line 42, in sendm
        ProStatus().sendMessage(self, message)
      File "F:\DeXun\QuoteWebsocket\common\comDealWith.py", line 52, in sendMessage
        self.Sub(tt['user'], tt['data'], callbacker)
      File "F:\DeXun\QuoteWebsocket\common\comDealWith.py", line 78, in Sub
        ProStatus().makelines(callbacker, item['data'])
      File "F:\DeXun\QuoteWebsocket\common\comDealWith.py", line 34, in makelines
        self.trigger(callbacker,lines)
      File "F:\DeXun\QuoteWebsocket\common\comDealWith.py", line 39, in trigger
        callbacker.write_message(line)
      File "F:\wechat\venv\lib\site-packages\tornado\websocket.py", line 262, in write_message
        return self.ws_connection.write_message(message, binary=binary)
      File "F:\wechat\venv\lib\site-packages\tornado\websocket.py", line 867, in write_message
        fut = self._write_frame(True, opcode, message, flags=flags)
      File "F:\wechat\venv\lib\site-packages\tornado\websocket.py", line 846, in _write_frame
        return self.stream.write(frame)
      File "F:\wechat\venv\lib\site-packages\tornado\iostream.py", line 575, in write
        self._write_buffer.append(data)
      File "F:\wechat\venv\lib\site-packages\tornado\iostream.py", line 159, in append
        b += data
    BufferError: Existing exports of data: object cannot be re-sized
    enter code here

QuoteHandler.py 此文件是tornado-websocket处理类。我使用“ tornado.gen.coroutine”和“ run_on_executor”来进行请求处理并推送数据。

from concurrent.futures.thread import ThreadPoolExecutor

from tornado import gen
from tornado.concurrent import run_on_executor

from QuoteWebsocket.common.comDealWith import ProStatus
from tornado.websocket import WebSocketHandler


class quoteHandler(WebSocketHandler):
    _thread_pool = ThreadPoolExecutor(2)

    def check_origin(self, origin):  
        return True

    def open(self):

        ProStatus().register(self)

    def on_close(self):
        ProStatus().unregister(self) 

    def on_message(self, message):
        # user_name = self.get_secure_cookie("nickname").decode('utf-8')
        self.ticks(message)

    @gen.coroutine
    def ticks(self, message):
        yield self.sendm(message)


    @run_on_executor(executor='_thread_pool')
    def sendm(self,message):

        ProStatus().sendMessage(self, message)

ComDealWith.py 我正在使用redis进行订阅和推送。这主要用于Redis订阅和取消订阅，处理用户订阅请求和取消订阅请求。

import asyncio
import threading

from QuoteWebsocket.common.comPubSub import SubscribeMessage
import json

from QuoteWebsocket.common.redisp import redisPool

class ProStatus(object):

    SubUserDist = dict()
    w_register = set()

    def register(self, callbacker):

        self.w_register.add(callbacker)

    def unregister(self, callbacker):

        self.w_register.remove(callbacker)


    def makelines(self,callbacker,lines):

        self.trigger(callbacker,lines)

    def trigger(self,callbacker, line):

        # try:
        callbacker.write_message(line)
        # except Exception as ex:
        #     data = json.loads(str(line))
        #     key = data.keys()
        #     self.UnSub()
        #     print(ex)

    def sendMessage(self, callbacker, message):

        tt = json.loads(message)
        # tt = {"msg":"sub","user":"a","data":"rb1910"}
        if tt['msg'] == 'sub':
            self.addSubUser(tt['user'])
            self.Sub(tt['user'], tt['data'], callbacker)


        elif tt['msg'] == 'unsub':
            self.UnSub(tt['user'], tt['data'])


    def addSubUser(self, user):
        if user not in self.SubUserDist.keys():
            rc = redisPool().getRedisPool(1)
            ps = rc.pubsub()
            self.SubUserDist[user] = ps

    def removeSubUser(self, user):
        self.SubUserDist.pop(user)


    def Sub(self, user, InstrumentList, callbacker):
        asyncio.set_event_loop(asyncio.new_event_loop())
        ps = self.SubUserDist[user]
        ps.subscribe(InstrumentList)  
        for item in ps.listen(): 
            if item['type'] == 'message':

                print(item['data'])
                ProStatus().makelines(callbacker, item['data'])


    def UnSub(self, user, InstrumentList):
        ps = self.SubUserDist[user]
        ps.unsubscribe(InstrumentList)