-import asyncio
-import atexit
import base64
import binascii
import calendar
compat_os_name,
compat_shlex_quote,
)
-from ..dependencies import websockets, xattr
+from ..dependencies import xattr
__name__ = __name__.rsplit('.', 1)[0] # Pretend to be the parent module
return self.parser.parse_args(self.all_args)
-class WebSocketsWrapper:
- """Wraps websockets module to use in non-async scopes"""
- pool = None
-
- def __init__(self, url, headers=None, connect=True):
- self.loop = asyncio.new_event_loop()
- # XXX: "loop" is deprecated
- self.conn = websockets.connect(
- url, extra_headers=headers, ping_interval=None,
- close_timeout=float('inf'), loop=self.loop, ping_timeout=float('inf'))
- if connect:
- self.__enter__()
- atexit.register(self.__exit__, None, None, None)
-
- def __enter__(self):
- if not self.pool:
- self.pool = self.run_with_loop(self.conn.__aenter__(), self.loop)
- return self
-
- def send(self, *args):
- self.run_with_loop(self.pool.send(*args), self.loop)
-
- def recv(self, *args):
- return self.run_with_loop(self.pool.recv(*args), self.loop)
-
- def __exit__(self, type, value, traceback):
- try:
- return self.run_with_loop(self.conn.__aexit__(type, value, traceback), self.loop)
- finally:
- self.loop.close()
- self._cancel_all_tasks(self.loop)
-
- # taken from https://github.com/python/cpython/blob/3.9/Lib/asyncio/runners.py with modifications
- # for contributors: If there's any new library using asyncio needs to be run in non-async, move these function out of this class
- @staticmethod
- def run_with_loop(main, loop):
- if not asyncio.iscoroutine(main):
- raise ValueError(f'a coroutine was expected, got {main!r}')
-
- try:
- return loop.run_until_complete(main)
- finally:
- loop.run_until_complete(loop.shutdown_asyncgens())
- if hasattr(loop, 'shutdown_default_executor'):
- loop.run_until_complete(loop.shutdown_default_executor())
-
- @staticmethod
- def _cancel_all_tasks(loop):
- to_cancel = asyncio.all_tasks(loop)
-
- if not to_cancel:
- return
-
- for task in to_cancel:
- task.cancel()
-
- # XXX: "loop" is removed in python 3.10+
- loop.run_until_complete(
- asyncio.gather(*to_cancel, loop=loop, return_exceptions=True))
-
- for task in to_cancel:
- if task.cancelled():
- continue
- if task.exception() is not None:
- loop.call_exception_handler({
- 'message': 'unhandled exception during asyncio.run() shutdown',
- 'exception': task.exception(),
- 'task': task,
- })
-
-
def merge_headers(*dicts):
"""Merge dicts of http headers case insensitively, prioritizing the latter ones"""
return {k.title(): v for k, v in itertools.chain.from_iterable(map(dict.items, dicts))}