2018-01-26 14:15:05 +00:00
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import json
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2017-11-17 14:47:22 +00:00
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from tornado.websocket import WebSocketHandler
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2018-02-06 13:19:41 +00:00
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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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2018-01-29 17:36:29 +00:00
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log = logging.getLogger(__name__)
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2018-01-29 16:24:17 +00:00
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2017-11-17 14:47:22 +00:00
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class ZMQWebSocketHandler(WebSocketHandler):
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2018-02-05 13:23:46 +00:00
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_event_handler_connector = EventHandlerConnector()
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2018-02-16 16:47:30 +00:00
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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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2018-02-05 13:23:46 +00:00
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2017-11-17 14:47:22 +00:00
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def open(self, *args, **kwargs):
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2018-01-29 17:36:29 +00:00
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log.debug('WebSocket connection initiated')
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2018-01-29 16:24:17 +00:00
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self._event_handler_connector.register_callback(self.zmq_callback)
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2017-12-20 10:34:21 +00:00
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2018-02-16 16:47:30 +00:00
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@staticmethod
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def zmq_callback(msg_parts):
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2018-02-21 14:28:16 +00:00
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key, data = deserialize_all(*msg_parts)
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2018-02-02 16:30:26 +00:00
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log.debug('Received on pull socket: {}'.format(data))
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2018-02-16 16:47:30 +00:00
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for instance in ZMQWebSocketHandler.instances:
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instance.write_message(data)
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2017-11-17 14:47:22 +00:00
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def on_message(self, message):
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2018-01-29 17:36:29 +00:00
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log.debug('Received on WebSocket: {}'.format(message))
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2018-02-23 11:07:30 +00:00
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self.send_message(self.make_response(message))
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2018-01-29 13:09:40 +00:00
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2018-02-21 15:46:25 +00:00
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def make_response(self, message):
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raise NotImplementedError
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2018-02-21 14:28:16 +00:00
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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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2017-11-17 14:47:22 +00:00
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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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2018-01-29 13:09:40 +00:00
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2018-02-23 11:07:30 +00:00
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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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2018-01-29 16:24:17 +00:00
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2018-02-23 11:07:30 +00:00
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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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2018-01-29 13:09:40 +00:00
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def make_response(self, message):
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2018-02-23 11:07:30 +00:00
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return self._make_response(message)
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