mirror of
https://github.com/avatao-content/baseimage-tutorial-framework
synced 2024-09-19 02:44:10 +00:00
92 lines
2.9 KiB
Python
92 lines
2.9 KiB
Python
# Copyright (C) 2018 Avatao.com Innovative Learning Kft.
|
|
# All Rights Reserved. See LICENSE file for details.
|
|
|
|
import json
|
|
from abc import ABC, abstractmethod
|
|
|
|
from tornado.websocket import WebSocketHandler
|
|
|
|
from tfw.networking import deserialize_tfw_msg, validate_message
|
|
from tfw.config.logs import logging
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
|
|
class ZMQWebSocketHandler(WebSocketHandler, ABC):
|
|
instances = set()
|
|
|
|
def initialize(self, **kwargs): # pylint: disable=arguments-differ
|
|
self._event_handler_connector = kwargs['event_handler_connector']
|
|
|
|
def prepare(self):
|
|
ZMQWebSocketHandler.instances.add(self)
|
|
|
|
def on_close(self):
|
|
ZMQWebSocketHandler.instances.remove(self)
|
|
|
|
def open(self, *args, **kwargs):
|
|
LOG.debug('WebSocket connection initiated')
|
|
self._event_handler_connector.register_callback(self.zmq_callback)
|
|
|
|
def zmq_callback(self, msg_parts):
|
|
keyhandlers = {'mirror': self.mirror}
|
|
|
|
message = deserialize_tfw_msg(*msg_parts)
|
|
LOG.debug('Received on pull socket: %s', message)
|
|
if not validate_message(message):
|
|
return
|
|
|
|
self.handle_trigger(message)
|
|
if message['key'] not in keyhandlers:
|
|
for instance in ZMQWebSocketHandler.instances:
|
|
instance.write_message(message)
|
|
else:
|
|
try:
|
|
keyhandlers[message['key']](message)
|
|
except KeyError:
|
|
LOG.error('Invalid mirror message format! Ignoring.')
|
|
|
|
def mirror(self, message):
|
|
message = message['data']
|
|
self._event_handler_connector.send_message(message)
|
|
|
|
def on_message(self, message):
|
|
LOG.debug('Received on WebSocket: %s', message)
|
|
if validate_message(message):
|
|
self.send_message(self.make_eventhandler_message(message))
|
|
|
|
@abstractmethod
|
|
def make_eventhandler_message(self, message):
|
|
raise NotImplementedError
|
|
|
|
def send_message(self, message: dict):
|
|
self._event_handler_connector.send_message(message)
|
|
|
|
@abstractmethod
|
|
def handle_trigger(self, message):
|
|
raise NotImplementedError
|
|
|
|
# much secure, very cors, wow
|
|
def check_origin(self, origin):
|
|
return True
|
|
|
|
|
|
class ZMQWebSocketProxy(ZMQWebSocketHandler):
|
|
# pylint: disable=abstract-method
|
|
def initialize(self, **kwargs): # pylint: disable=arguments-differ
|
|
super(ZMQWebSocketProxy, self).initialize(**kwargs)
|
|
self._make_eventhandler_message = kwargs['make_eventhandler_message']
|
|
self._proxy_filter = kwargs['proxy_filter']
|
|
self._handle_trigger = kwargs['handle_trigger']
|
|
|
|
def on_message(self, message):
|
|
message = json.loads(message)
|
|
if self._proxy_filter(message):
|
|
super().on_message(message)
|
|
|
|
def make_eventhandler_message(self, message):
|
|
return self._make_eventhandler_message(message)
|
|
|
|
def handle_trigger(self, message):
|
|
self._handle_trigger(message)
|