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112 lines
3.9 KiB
Python
112 lines
3.9 KiB
Python
##
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# Copyright 2016 Jeffrey D. Walter
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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 monotonic
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import sseclient
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import threading
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import sys
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if sys.version[0] == '2':
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import Queue as queue
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else:
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import queue as queue
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# TODO: There's a lot more refactoring that could/should be done to abstract out the arlo-specific implementation details.
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class EventStream(object):
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"""This class provides a queue-based EventStream object."""
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def __init__(self, event_handler, heartbeat_handler, args):
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self.connected = False
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self.registered = False
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self.queue = queue.Queue()
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self.heartbeat_stop_event = threading.Event()
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self.event_stream_stop_event = threading.Event()
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self.arlo = args[0]
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self.heartbeat_handler = heartbeat_handler
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try:
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event_stream = sseclient.SSEClient('https://my.arlo.com/hmsweb/client/subscribe?token='+self.arlo.request.session.headers.get('Authorization'), session=self.arlo.request.session)
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self.event_stream_thread = threading.Thread(name="EventStream", target=event_handler, args=(self.arlo, event_stream, self.event_stream_stop_event, ))
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self.event_stream_thread.setDaemon(True)
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print(self.arlo.request)
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print(self.arlo)
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except Exception as e:
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raise Exception('Failed to subscribe to eventstream: {0}'.format(e))
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def __del__(self):
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self.Disconnect()
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def Get(self, block=True, timeout=None):
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if sys.version[0] == '2' and block:
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if timeout:
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timeout += monotonic.monotonic()
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# If timeout is None, then just pick some arbitrarily large # for the timeout value.
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else:
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timeout = 1000000 + monotonic.monotonic()
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while True:
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try:
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# Allow check for Ctrl-C every second
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item = self.queue.get(timeout=min(1, timeout - monotonic.monotonic()))
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self.queue.task_done()
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return item
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except queue.Empty:
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if monotonic.monotonic() > timeout:
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return None
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else:
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pass
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else:
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try:
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item = self.queue.get(block=block, timeout=timeout)
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self.queue.task_done()
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return item
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except queue.Empty as e:
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return None
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except Exception as e:
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return None
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def Start(self):
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self.event_stream_thread.start()
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return self
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def Connect(self):
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self.connected = True
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def Disconnect(self):
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self.connected = False
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self.Unregister()
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def Register(self):
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self.heartbeat_thread = threading.Thread(name='HeartbeatThread', target=self.heartbeat_handler, args=(self.arlo, self.heartbeat_stop_event, ))
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self.heartbeat_thread.setDaemon(True)
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self.heartbeat_thread.start()
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self.registered = True
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def Unregister(self):
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self.registered = False
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if self.queue:
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self.queue.put(None)
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self.event_stream_stop_event.set()
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self.heartbeat_stop_event.set()
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if self.event_stream_thread != threading.current_thread():
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self.event_stream_thread.join()
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if self.heartbeat_thread != threading.current_thread():
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self.heartbeat_thread.join()
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