1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
|
###############################################################################
#
# The MIT License (MIT)
#
# Copyright (c) typedef int GmbH
#
# 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.
#
###############################################################################
def run_once():
"""
A helper that takes one trip through the event-loop to process any
pending Futures. This is a no-op for Twisted, because you don't
need to use the event-loop to get callbacks to happen in Twisted.
"""
import txaio
if txaio.using_twisted:
return
try:
import sys
import asyncio
if sys.version_info >= (3, 7):
# https://github.com/crossbario/txaio/issues/139
def _run_once(loop):
"""Legacy API to run once through the event loop.
This is the recommended pattern for test code. It will poll the
selector once and run all callbacks scheduled in response to I/O
events.
"""
loop.call_soon(loop.stop)
loop.run_forever()
else:
from asyncio.test_utils import run_once as _run_once
return _run_once(txaio.config.loop or _get_loop())
except ImportError:
import trollius as asyncio
# let any trollius import error out; if we're not using
# twisted, and have no asyncio *and* no trollius, that's a
# problem.
# copied from asyncio.testutils because trollius has no
# testutils"
# just like modern asyncio.testutils.run_once does it...
loop = asyncio.get_event_loop()
loop.stop()
loop.run_forever()
asyncio.gather(*asyncio.Task.all_tasks())
def _get_loop():
import asyncio
try:
return asyncio.get_event_loop()
except RuntimeError:
loop = asyncio.new_event_loop()
asyncio.set_event_loop(loop)
return loop
def _await(future):
"""
Essentially just a way to call "run_until_complete" that becomes a
no-op if we're using Twisted.
"""
import txaio
if txaio.using_twisted:
return
try:
import asyncio
except ImportError:
import trollius as asyncio
asyncio.get_event_loop().run_until_complete(future)
|
