mirror of
https://github.com/avatao-content/baseimage-tutorial-framework
synced 2024-09-17 00:24:09 +00:00
73 lines
2.2 KiB
Python
73 lines
2.2 KiB
Python
import json
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from abc import ABC, abstractmethod
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from tornado.websocket import WebSocketHandler
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from tfw.networking.serialization import deserialize_all
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from tfw.networking.server.event_handler_connector import EventHandlerConnector
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from tfw.config.logs import logging
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LOG = logging.getLogger(__name__)
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class ZMQWebSocketHandler(WebSocketHandler, ABC):
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_event_handler_connector = EventHandlerConnector()
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instances = set()
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def prepare(self):
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ZMQWebSocketHandler.instances.add(self)
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def on_close(self):
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ZMQWebSocketHandler.instances.remove(self)
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def open(self, *args, **kwargs):
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LOG.debug('WebSocket connection initiated')
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self._event_handler_connector.register_callback(self.zmq_callback)
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@classmethod
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def zmq_callback(cls, msg_parts):
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keyhandlers = {'mirror': cls.mirror}
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key, data = deserialize_all(*msg_parts)
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LOG.debug('Received on pull socket: %s', data)
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if key not in keyhandlers:
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for instance in cls.instances:
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instance.write_message(data)
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else:
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try: keyhandlers[key](data['data'])
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except KeyError: LOG.error('Invalid mirror message format! Ignoring.')
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@classmethod
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def mirror(cls, data):
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key = data['key']
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cls._event_handler_connector.send_message({'data': data}, key)
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def on_message(self, message):
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LOG.debug('Received on WebSocket: %s', message)
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self.send_message(self.make_response(message))
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@abstractmethod
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def make_response(self, message):
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raise NotImplementedError
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def send_message(self, message: dict, key: str = None):
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self._event_handler_connector.send_message(message, key)
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# much secure, very cors, wow
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def check_origin(self, origin):
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return True
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class ZMQWebSocketProxy(ZMQWebSocketHandler):
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def initialize(self, make_response, proxy_filter):
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self._make_response = make_response
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self._proxy_filter = proxy_filter
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def on_message(self, message):
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message = json.loads(message)
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if self._proxy_filter(message):
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super().on_message(message)
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def make_response(self, message):
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return self._make_response(message)
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