autobahn access from outside of class

gistfile1.py

from autobahn.twisted.wamp import ApplicationSession, ApplicationRunner
from twisted.internet.defer import inlineCallbacks
from autobahn.twisted.util import sleep


class MyComponent(ApplicationSession):

    @inlineCallbacks
    def onJoin(self, details):
        print("session joined")
        if not self.factory._myAppSession:
            self.factory._myAppSession = self
        
        def display_image(data):
            print("Display image event received, data: {}".format(data))
            #yield sleep(1)

            # notify that image has been displayed
            self.publish(u'image_displayed', [data])
            #session.publish('image_displayed', 'from_direct_session')


        try:
            yield self.subscribe(display_image, u'display_image')
            print("subscribed to topic: display_image")
        except Exception as e:
            print("could not subscribe to topic: {0}".format(e))


if __name__ == '__main__':
    runner = ApplicationRunner(url = u"ws://localhost:8080/ws", realm = u"realm1")
    runner.run(MyComponent)