我没有找到解决问题的方法。我需要创建一个带有两个线程的python应用程序,每个线程都使用autobahn库连接到WAMP路由器。
关注我写下我的实验代码:
wampAddress = 'ws://172.17.3.139:8181/ws'
wampRealm = 's4t'
from threading import Thread
from autobahn.twisted.wamp import ApplicationRunner
from autobahn.twisted.wamp import ApplicationSession
from twisted.internet.defer import inlineCallbacks
class AutobahnMRS(ApplicationSession):
@inlineCallbacks
def onJoin(self, details):
print("Sessio attached [Connect to WAMP Router]")
def onMessage(*args):
print args
try:
yield self.subscribe(onMessage, 'test')
print ("Subscribed to topic: test")
except Exception as e:
print("Exception:" +e)
class AutobahnIM(ApplicationSession):
@inlineCallbacks
def onJoin(self, details):
print("Sessio attached [Connect to WAMP Router]")
try:
yield self.publish('test','YOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO')
print ("Subscribed to topic: test")
except Exception as e:
print("Exception:" +e)
class ManageRemoteSystem:
def __init__(self):
self.runner = ApplicationRunner(url= wampAddress, realm = wampRealm)
def start(self):
self.runner.run(AutobahnMRS);
class InternalMessages:
def __init__(self):
self.runner = ApplicationRunner(url= wampAddress, realm = wampRealm)
def start(self):
self.runner.run(AutobahnIM);
#class S4tServer:
if __name__ == '__main__':
server = ManageRemoteSystem()
sendMessage = InternalMessages()
thread1 = Thread(target = server.start())
thread1.start()
thread1.join()
thread2 = Thread(target = sendMessage.start())
thread2.start()
thread2.join()
当我启动这个python应用程序时,只启动了thread1,之后当我终止应用程序(ctrl-c)时,会显示以下错误消息:
Sessio attached [Connect to WAMP Router]
Subscribed to topic: test
^CTraceback (most recent call last):
File "test_pub.py", line 71, in <module>
p2 = multiprocessing.Process(target = server.start())
File "test_pub.py", line 50, in start
self.runner.run(AutobahnMRS);
File "/usr/local/lib/python2.7/dist-packages/autobahn/twisted/wamp.py", line 175, in run
reactor.run()
File "/usr/local/lib/python2.7/dist-packages/twisted/internet/base.py", line 1191, in run
self.startRunning(installSignalHandlers=installSignalHandlers)
File "/usr/local/lib/python2.7/dist-packages/twisted/internet/base.py", line 1171, in startRunning
ReactorBase.startRunning(self)
File "/usr/local/lib/python2.7/dist-packages/twisted/internet/base.py", line 683, in startRunning
raise error.ReactorNotRestartable()
twisted.internet.error.ReactorNotRestartable
我需要在一个具有其功能的应用程序中实现,并且它必须有一个系统,用于与具有autobahn python库的WAMP路由器进行通信。
换句话说,我需要一个能够与WAMP路由器通信的解决方案,但同时这个应用程序不必用高速公路部分阻止(我认为解决方案是启动两个线程,一个线程管理一些功能,第二个线程管理高速公路部分。)
使用我之前提出的架构,还有另一个问题,即需要在WAMP路由器的特定主题中从“没有高速公路线程”中的应用程序部分发送消息,此功能应该通过特定功能调用,而不会阻止其他功能。
我希望我已经提供了所有细节。
非常感谢您的回复
-------------------------------- EDIT -------------- -------------------
经过一些研究后,我已经实现了我对websocket协议的需求,代码如下:
# ----- twisted ----------
class _WebSocketClientProtocol(WebSocketClientProtocol):
def __init__(self, factory):
self.factory = factory
def onOpen(self):
#log.debug("Client connected")
self.factory.protocol_instance = self
self.factory.base_client._connected_event.set()
class _WebSocketClientFactory(WebSocketClientFactory):
def __init__(self, *args, **kwargs):
WebSocketClientFactory.__init__(self, *args, **kwargs)
self.protocol_instance = None
self.base_client = None
def buildProtocol(self, addr):
return _WebSocketClientProtocol(self)
# ------ end twisted -------
lass BaseWBClient(object):
def __init__(self, websocket_settings):
#self.settings = websocket_settings
# instance to be set by the own factory
self.factory = None
# this event will be triggered on onOpen()
self._connected_event = threading.Event()
# queue to hold not yet dispatched messages
self._send_queue = Queue.Queue()
self._reactor_thread = None
def connect(self):
log.msg("Connecting to host:port")
self.factory = _WebSocketClientFactory(
"ws://host:port",
debug=True)
self.factory.base_client = self
c = connectWS(self.factory)
self._reactor_thread = threading.Thread(target=reactor.run,
args=(False,))
self._reactor_thread.daemon = True
self._reactor_thread.start()
def send_message(self, body):
if not self._check_connection():
return
log.msg("Queing send")
self._send_queue.put(body)
reactor.callFromThread(self._dispatch)
def _check_connection(self):
if not self._connected_event.wait(timeout=10):
log.err("Unable to connect to server")
self.close()
return False
return True
def _dispatch(self):
log.msg("Dispatching")
while True:
try:
body = self._send_queue.get(block=False)
except Queue.Empty:
break
self.factory.protocol_instance.sendMessage(body)
def close(self):
reactor.callFromThread(reactor.stop)
import time
def Ppippo(coda):
while True:
coda.send_message('YOOOOOOOO')
time.sleep(5)
if __name__ == '__main__':
ws_setting = {'host':'', 'port':}
client = BaseWBClient(ws_setting)
t1 = threading.Thread(client.connect())
t11 = threading.Thread(Ppippo(client))
t11.start()
t1.start()
以前的代码工作正常,但我需要将其翻译为在WAMP协议上运行websocket。
有谁知道我如何解决?
答案 0 :(得分:5)
坏消息是Autobahn正在使用Twisted主循环,所以你不能同时在两个线程中运行它。
好消息是你没有需要在两个线程中运行它来运行两件事,而且两条线程无论如何都会更复杂。
开始使用多个应用程序的API有点令人困惑,因为你有两个ApplicationRunner
个对象,乍看之下在高速公路上运行应用程序的方式是调用ApplicationRunner.run
然而,ApplicationRunner
只是一种方便,它包含了设置应用程序的东西以及运行主循环的东西;工作的真正内容发生在WampWebSocketClientFactory
。
为了实现你想要的,你只需要摆脱线程,并自己运行主循环,使ApplicationRunner
实例只是设置他们的应用程序。
为了实现这一目标,您需要更改程序的最后一部分来执行此操作:
class ManageRemoteSystem:
def __init__(self):
self.runner = ApplicationRunner(url=wampAddress, realm=wampRealm)
def start(self):
# Pass start_reactor=False to all runner.run() calls
self.runner.run(AutobahnMRS, start_reactor=False)
class InternalMessages:
def __init__(self):
self.runner = ApplicationRunner(url=wampAddress, realm=wampRealm)
def start(self):
# Same as above
self.runner.run(AutobahnIM, start_reactor=False)
if __name__ == '__main__':
server = ManageRemoteSystem()
sendMessage = InternalMessages()
server.start()
sendMessage.start()
from twisted.internet import reactor
reactor.run()