|
1
|
|
|
# Licensed to the StackStorm, Inc ('StackStorm') under one or more |
|
2
|
|
|
# contributor license agreements. See the NOTICE file distributed with |
|
3
|
|
|
# this work for additional information regarding copyright ownership. |
|
4
|
|
|
# The ASF licenses this file to You under the Apache License, Version 2.0 |
|
5
|
|
|
# (the "License"); you may not use this file except in compliance with |
|
6
|
|
|
# the License. You may obtain a copy of the License at |
|
7
|
|
|
# |
|
8
|
|
|
# http://www.apache.org/licenses/LICENSE-2.0 |
|
9
|
|
|
# |
|
10
|
|
|
# Unless required by applicable law or agreed to in writing, software |
|
11
|
|
|
# distributed under the License is distributed on an "AS IS" BASIS, |
|
12
|
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
|
13
|
|
|
# See the License for the specific language governing permissions and |
|
14
|
|
|
# |
|
15
|
|
|
|
|
16
|
|
|
""" |
|
17
|
|
|
Module for performing eventlet and other monkey patching. |
|
18
|
|
|
""" |
|
19
|
|
|
|
|
20
|
|
|
from __future__ import absolute_import |
|
21
|
|
|
|
|
22
|
|
|
import sys |
|
23
|
|
|
|
|
24
|
|
|
__all__ = [ |
|
25
|
|
|
'monkey_patch', |
|
26
|
|
|
'monkey_patch_pkg_resources' |
|
27
|
|
|
] |
|
28
|
|
|
|
|
29
|
|
|
USE_DEBUGGER_FLAG = '--use-debugger' |
|
30
|
|
|
PARENT_ARGS_FLAG = '--parent-args=' |
|
31
|
|
|
|
|
32
|
|
|
|
|
33
|
|
|
def monkey_patch(): |
|
34
|
|
|
""" |
|
35
|
|
|
Function which performs eventlet monkey patching and also takes into account "--use-debugger" |
|
36
|
|
|
argument in the command line arguments. |
|
37
|
|
|
|
|
38
|
|
|
If this argument is found, no monkey patching is performed for the thread module. This allows |
|
39
|
|
|
user to use remote debuggers. |
|
40
|
|
|
""" |
|
41
|
|
|
import eventlet |
|
42
|
|
|
|
|
43
|
|
|
patch_thread = not is_use_debugger_flag_provided() |
|
44
|
|
|
eventlet.monkey_patch(os=True, select=True, socket=True, thread=patch_thread, time=True) |
|
45
|
|
|
|
|
46
|
|
|
|
|
47
|
|
|
def monkey_patch_pkg_resources(): |
|
48
|
|
|
# Note: This is a work-around for a very slow "pkg_resources" import. |
|
49
|
|
|
# pkg_resources is used by cryptography which is used by eventlet and importing pkg_resources |
|
50
|
|
|
# adds ~500-600ms to the import time of any script which uses that code :/ |
|
51
|
|
|
# See https://github.com/pypa/setuptools/issues/510 for details |
|
52
|
|
|
import entrypoints |
|
53
|
|
|
sys.modules['pkg_resources'] = entrypoints |
|
54
|
|
|
|
|
55
|
|
|
|
|
56
|
|
|
def is_use_debugger_flag_provided(): |
|
57
|
|
|
# 1. Check sys.argv directly |
|
58
|
|
|
if USE_DEBUGGER_FLAG in sys.argv: |
|
59
|
|
|
return True |
|
60
|
|
|
|
|
61
|
|
|
# 2. Check "parent-args" arguments. This is used for spawned processes such as sensors and |
|
62
|
|
|
# Python runner actions |
|
63
|
|
|
|
|
64
|
|
|
for arg in sys.argv: |
|
65
|
|
|
if arg.startswith(PARENT_ARGS_FLAG) and USE_DEBUGGER_FLAG in arg: |
|
66
|
|
|
return True |
|
67
|
|
|
|
|
68
|
|
|
return False |
|
69
|
|
|
|
StackStorm /
st2
