使用autbahn.asyncio.wamp非阻塞地运行几个ApplicationSession


问题内容

我正在尝试autobahn.asyncio.wamp.ApplicationSession在python中同时运行两个s。以前,我是通过修改高速公路库来实现此目的的,本文的答案所示。我现在需要更专业的解决方案。

经过一段时间的搜索,这篇文章看起来很有希望,但是使用的是twisted库,而不是asyncio。我无法asyncio为该autobahn库的分支标识类似的解决方案,因为它似乎没有使用Reactors

我的主要问题ApplicationRunner.run()是阻塞(这就是我以前将其外包给线程的原因),所以我不能只ApplicationRunner在它之后运行一秒钟。

我确实需要同时访问2个websocket通道,但似乎无法使用单个通道ApplicationSession

到目前为止,我的代码:

from autobahn.asyncio.wamp import ApplicationSession
from autobahn.asyncio.wamp import ApplicationRunner
from asyncio import coroutine
import time


channel1 = 'BTC_LTC'
channel2 = 'BTC_XMR'

class LTCComponent(ApplicationSession):

    def onConnect(self):
        self.join(self.config.realm)

    @coroutine
    def onJoin(self, details):
        def onTicker(*args, **kwargs):
            print('LTCComponent', args, kwargs)

        try:
            yield from self.subscribe(onTicker, channel1)
        except Exception as e:
            print("Could not subscribe to topic:", e)

class XMRComponent(ApplicationSession):

    def onConnect(self):
        self.join(self.config.realm)

    @coroutine
    def onJoin(self, details):
        def onTicker(*args, **kwargs):
            print('XMRComponent', args, kwargs)

        try:
            yield from self.subscribe(onTicker, channel2)
        except Exception as e:
            print("Could not subscribe to topic:", e)

def main():
    runner = ApplicationRunner("wss://api.poloniex.com:443", "realm1", extra={})
    runner.run(LTCComponent)
    runner.run(XMRComponent) # <- is not being called


if __name__ == "__main__":

    try:
        main()
    except KeyboardInterrupt:
        quit()

    except Exception as e:
        print(time.time(), e)

我对autobahn图书馆的了解有限,而且恐怕文档没有太大改善。我在这里俯瞰什么吗?一个函数,一个参数,它将使我能够复合组件或一次运行它们?

也许是这里提供的类似解决方案,可以实现替代方案ApplicationRunner


相关话题

扭曲地运行两个ApplicationSession

在线程中运行Autobahn
ApplicationRunner

Autobahn.wamp.ApplicationSession源

Autobahn.wamp.Applicationrunner源


根据要求,使用multithreading代码从@stovfl的答案进行回溯:

Exception in thread Thread-2:
Traceback (most recent call last):
  File "/home/nils/anaconda3/lib/python3.5/threading.py", line     914, in _bootstrap_inner
    self.run()
  File "/home/nils/git/tools/gemini_wss/t2.py", line 27, in run
    self.appRunner.run(self.__ApplicationSession)
  File "/home/nils/anaconda3/lib/python3.5/site-packages/autobahn-    0.14.1-py3.5.egg/autobahn/asyncio/wamp.py", line 143,     in run
    transport_factory = WampWebSocketClientFactory(create,         url=self.url,                 serializers=self.serializers)
  File "/home/nils/anaconda3/lib/python3.5/site-packages/autobahn-    0.14.1-py3.5.egg/autobahn/asyncio/websocket.py", line     319, in __init__
    WebSocketClientFactory.__init__(self, *args, **kwargs)
  File "/home/nils/anaconda3/lib/python3.5/site-packages/autobahn-    0.14.1-py3.5.egg/autobahn/asyncio/websocket.py", line     268, in __init__
    self.loop = loop or asyncio.get_event_loop()
  File "/home/nils/anaconda3/lib/python3.5/asyncio/events.py",     line 626, in get_event_loop
    return get_event_loop_policy().get_event_loop()
  File "/home/nils/anaconda3/lib/python3.5/asyncio/events.py",     line 572, in get_event_loop
    % threading.current_thread().name)
RuntimeError: There is no current event loop in thread 'Thread-2'.
Exception in thread Thread-1:
**Same as in Thread-2**
...
RuntimeError: There is no current event loop in thread 'Thread-1'.

问题答案:

按照您链接扭曲的方法我设法通过asyncio设置 start_loop = False 来获得相同的行为 __

import asyncio
from autobahn.asyncio.wamp import ApplicationSession, ApplicationRunner

runner1 = ApplicationRunner(url, realm, extra={'cli_id': 1})
coro1 = runner1.run(MyApplicationSession, start_loop=False)

runner2 = ApplicationRunner(url, realm, extra={'cli_id': 2})
coro2 = runner2.run(MyApplicationSession, start_loop=False)

asyncio.get_event_loop().run_until_complete(coro1)
asyncio.get_event_loop().run_until_complete(coro2)
asyncio.get_event_loop().run_forever()

class MyApplicationSession(ApplicationSession):

    def __init__(self, cfg):
        super().__init__(cfg)
        self.cli_id = cfg.extra['cli_id']

   def onJoin(self, details):
        print("session attached", self.cli_id)