136 lines
4.1 KiB
Python
136 lines
4.1 KiB
Python
# Copyright 2017 Mycroft AI Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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import json
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import time
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from multiprocessing.pool import ThreadPool
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from pyee import EventEmitter
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from websocket import WebSocketApp
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from mycroft.configuration import ConfigurationManager
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from mycroft.messagebus.message import Message
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from mycroft.util import validate_param
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from mycroft.util.log import LOG
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class WebsocketClient(object):
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def __init__(self, host=None, port=None, route=None, ssl=None):
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config = ConfigurationManager.get().get("websocket")
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host = host or config.get("host")
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port = port or config.get("port")
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route = route or config.get("route")
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ssl = ssl or config.get("ssl")
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validate_param(host, "websocket.host")
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validate_param(port, "websocket.port")
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validate_param(route, "websocket.route")
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self.url = WebsocketClient.build_url(host, port, route, ssl)
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self.emitter = EventEmitter()
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self.client = self.create_client()
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self.pool = ThreadPool(10)
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self.retry = 5
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@staticmethod
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def build_url(host, port, route, ssl):
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scheme = "wss" if ssl else "ws"
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return scheme + "://" + host + ":" + str(port) + route
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def create_client(self):
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return WebSocketApp(self.url,
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on_open=self.on_open, on_close=self.on_close,
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on_error=self.on_error, on_message=self.on_message)
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def on_open(self, ws):
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LOG.info("Connected")
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self.emitter.emit("open")
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# Restore reconnect timer to 5 seconds on sucessful connect
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self.retry = 5
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def on_close(self, ws):
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self.emitter.emit("close")
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def on_error(self, ws, error):
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try:
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self.emitter.emit('error', error)
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self.client.close()
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except Exception, e:
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LOG.error(repr(e))
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LOG.warning("WS Client will reconnect in %d seconds." % self.retry)
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time.sleep(self.retry)
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self.retry = min(self.retry * 2, 60)
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self.client = self.create_client()
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self.run_forever()
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def on_message(self, ws, message):
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self.emitter.emit('message', message)
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parsed_message = Message.deserialize(message)
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self.pool.apply_async(
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self.emitter.emit, (parsed_message.type, parsed_message))
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def emit(self, message):
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if (not self.client or not self.client.sock or
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not self.client.sock.connected):
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return
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if hasattr(message, 'serialize'):
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self.client.send(message.serialize())
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else:
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self.client.send(json.dumps(message.__dict__))
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def on(self, event_name, func):
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self.emitter.on(event_name, func)
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def once(self, event_name, func):
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self.emitter.once(event_name, func)
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def remove(self, event_name, func):
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self.emitter.remove_listener(event_name, func)
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def remove_all_listeners(self, event_name):
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'''
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Remove all listeners connected to event_name.
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Args:
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event_name: event from which to remove listeners
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'''
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if event_name is None:
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raise ValueError
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self.emitter.remove_all_listeners(event_name)
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def run_forever(self):
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self.client.run_forever()
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def close(self):
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self.client.close()
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def echo():
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ws = WebsocketClient()
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def echo(message):
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LOG.info(message)
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def repeat_utterance(message):
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message.type = 'speak'
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ws.emit(message)
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ws.on('message', echo)
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ws.on('recognizer_loop:utterance', repeat_utterance)
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ws.run_forever()
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if __name__ == "__main__":
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echo()
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