Urwid，高速公路和扭曲的eventloop集成

Question

我正在使用高速公路連接到服務器並獲得"push"通知，我想使用他們的扭曲事件循環創建一個簡單的urwid界面。 但是我不確定從我的高速公路處理程序類設置urwid文本的最佳方法是什么。 在下面的代碼中，您可以看到我當前的實現，我想從我的"MyFrontendComponent"類中調用"updateText"方法。 這樣做的最佳方式是什么？

import urwid
from twisted.internet import reactor
from twisted.internet.defer import inlineCallbacks
from twisted.internet.endpoints import clientFromString

from autobahn.twisted import wamp, websocket
from autobahn.wamp import types
from autobahn.wamp.serializer import *


class MyFrontendComponent( wamp.ApplicationSession, object):
    @inlineCallbacks
    def onJoin(self, details):
        ## call a remote procedure
        try:
            now = yield self.call(u'com.timeservice.now')
        except Exception as e:
            print("Error: {}".format(e))
        else:
            print("Current time from time service: {}".format(now))

        ## subscribe to a topic
        self.received = 0

        def on_event(i):
            print("Got event: {}".format(i))
            self.received += 1
            if self.received > 5:
                self.leave()

        sub = yield self.subscribe(on_event, u'com.myapp.topic1')
        print("Subscribed with subscription ID {}".format(sub.id))

    def onDisconnect(self):
        reactor.stop()

class MyApp(object):
    txt = urwid.Text(u"Hello World")
    def __init__(self):
        component_config = types.ComponentConfig(realm="realm1")
        session_factory = wamp.ApplicationSessionFactory(config=component_config)
        session_factory.session = MyFrontendComponent
        serializers = None
        serializers = []
        serializers.append(JsonSerializer())
        transport_factory = websocket.WampWebSocketClientFactory(session_factory,
                                                             serializers=serializers, debug=False, debug_wamp=False)
        client = clientFromString(reactor, "tcp:127.0.0.1:8080")
        client.connect(transport_factory)
        fill = urwid.Filler(self.txt, 'top')
        loop = urwid.MainLoop(fill, unhandled_input=self.show_or_exit, event_loop=urwid.TwistedEventLoop())
        loop.run()

    def updateText(self, input):
        self.txt.set_text(input)

    def show_or_exit(self, key):
        if key in ('q', 'Q'):
            raise urwid.ExitMainLoop()
        self.txt.set_text(repr(key))

if __name__ == '__main__':
    MyApp()

和服務器代碼：

import sys
import six
import datetime
from twisted.python import log
from twisted.internet import reactor
from twisted.internet.defer import inlineCallbacks
from twisted.internet.endpoints import serverFromString
from autobahn.wamp import types
from autobahn.twisted.util import sleep
from autobahn.twisted import wamp, websocket

class MyBackendComponent(wamp.ApplicationSession):
    @inlineCallbacks
    def onJoin(self, details):
        ## register a procedure for remote calling
        def utcnow():
            print("Someone is calling me;)")
            now = datetime.datetime.utcnow()
            return six.u(now.strftime("%Y-%m-%dT%H:%M:%SZ"))

        reg = yield self.register(utcnow, u'com.timeservice.now')
        print("Registered procedure with ID {}".format(reg.id))

        ## publish events to a topic
        counter = 0
        while True:
            self.publish(u'com.myapp.topic1', counter)
            print("Published event.")
            counter += 1
            yield sleep(1)

if __name__ == '__main__':
    ## 0) start logging to console
    log.startLogging(sys.stdout)
    ## 1) create a WAMP router factory
    router_factory = wamp.RouterFactory()
    ## 2) create a WAMP router session factory
    session_factory = wamp.RouterSessionFactory(router_factory)
    ## 3) Optionally, add embedded WAMP application sessions to the router
    component_config = types.ComponentConfig(realm="realm1")
    component_session = MyBackendComponent(component_config)
    session_factory.add(component_session)
    ## 4) create a WAMP-over-WebSocket transport server factory
    transport_factory = websocket.WampWebSocketServerFactory(session_factory,
                                                             debug=False,
                                                             debug_wamp=False)
    ## 5) start the server from a Twisted endpoint
    server = serverFromString(reactor, "tcp:8080")
    server.listen(transport_factory)
    ## 6) now enter the Twisted reactor loop
    reactor.run()

謝謝！

Answer 1

由於我沒有足夠的回復在評論中回復，我會在這里做！ oberstet評論中給出的答案提示幫助我在沒有任何全局變量的情況下正確地做到了這一點！ :)

謝謝