mirror of
https://github.com/avatao-content/baseimage-tutorial-framework
synced 2024-09-19 22:41:33 +00:00
92 lines
2.9 KiB
Python
92 lines
2.9 KiB
Python
# Copyright (C) 2018 Avatao.com Innovative Learning Kft.
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# All Rights Reserved. See LICENSE file for details.
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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 import deserialize_tfw_msg, validate_message
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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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instances = set()
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def initialize(self, **kwargs): # pylint: disable=arguments-differ
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self._event_handler_connector = kwargs['event_handler_connector']
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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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def zmq_callback(self, msg_parts):
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keyhandlers = {'mirror': self.mirror}
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message = deserialize_tfw_msg(*msg_parts)
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LOG.debug('Received on pull socket: %s', message)
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if not validate_message(message):
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return
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self.handle_trigger(message)
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if message['key'] not in keyhandlers:
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for instance in ZMQWebSocketHandler.instances:
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instance.write_message(message)
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else:
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try:
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keyhandlers[message['key']](message)
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except KeyError:
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LOG.error('Invalid mirror message format! Ignoring.')
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def mirror(self, message):
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message = message['data']
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self._event_handler_connector.send_message(message)
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def on_message(self, message):
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LOG.debug('Received on WebSocket: %s', message)
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if validate_message(message):
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self.send_message(self.make_eventhandler_message(message))
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@abstractmethod
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def make_eventhandler_message(self, message):
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raise NotImplementedError
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def send_message(self, message: dict):
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self._event_handler_connector.send_message(message)
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@abstractmethod
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def handle_trigger(self, message):
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raise NotImplementedError
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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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# pylint: disable=abstract-method
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def initialize(self, **kwargs): # pylint: disable=arguments-differ
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super(ZMQWebSocketProxy, self).initialize(**kwargs)
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self._make_eventhandler_message = kwargs['make_eventhandler_message']
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self._proxy_filter = kwargs['proxy_filter']
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self._handle_trigger = kwargs['handle_trigger']
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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_eventhandler_message(self, message):
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return self._make_eventhandler_message(message)
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def handle_trigger(self, message):
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self._handle_trigger(message)
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