bazarr/libs/apprise/py3compat/asyncio.py

121 lines
3.8 KiB
Python

# -*- coding: utf-8 -*-
# Copyright (C) 2020 Chris Caron <lead2gold@gmail.com>
# All rights reserved.
#
# This code is licensed under the MIT License.
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files(the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions :
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
import sys
import asyncio
from functools import partial
from ..URLBase import URLBase
from ..logger import logger
# A global flag that tracks if we are Python v3.7 or higher
ASYNCIO_RUN_SUPPORT = \
sys.version_info.major > 3 or \
(sys.version_info.major == 3 and sys.version_info.minor >= 7)
# async reference produces a SyntaxError (E999) in Python v2.7
# For this reason we turn on the noqa flag
async def notify(coroutines): # noqa: E999
"""
An async wrapper to the AsyncNotifyBase.async_notify() calls allowing us
to call gather() and collect the responses
"""
# Create log entry
logger.info(
'Notifying {} service(s) asynchronously.'.format(len(coroutines)))
results = await asyncio.gather(*coroutines, return_exceptions=True)
# Returns True if all notifications succeeded, otherwise False is
# returned.
failed = any(not status or isinstance(status, Exception)
for status in results)
return not failed
def tosync(cor, debug=False):
"""
Await a coroutine from non-async code.
"""
if ASYNCIO_RUN_SUPPORT:
return asyncio.run(cor, debug=debug)
else:
# The Deprecated Way (<= Python v3.6)
try:
# acquire access to our event loop
loop = asyncio.get_event_loop()
except RuntimeError:
# This happens if we're inside a thread of another application
# where there is no running event_loop(). Pythong v3.7 and
# higher automatically take care of this case for us. But for
# the lower versions we need to do the following:
loop = asyncio.new_event_loop()
asyncio.set_event_loop(loop)
# Enable debug mode
loop.set_debug(debug)
return loop.run_until_complete(cor)
async def toasyncwrap(v): # noqa: E999
"""
Create a coroutine that, when run, returns the provided value.
"""
return v
class AsyncNotifyBase(URLBase):
"""
asyncio wrapper for the NotifyBase object
"""
async def async_notify(self, *args, **kwargs): # noqa: E999
"""
Async Notification Wrapper
"""
loop = asyncio.get_event_loop()
try:
return await loop.run_in_executor(
None, partial(self.notify, *args, **kwargs))
except TypeError:
# These our our internally thrown notifications
pass
except Exception:
# A catch all so we don't have to abort early
# just because one of our plugins has a bug in it.
logger.exception("Notification Exception")
return False