blob: 7ec820021627092c87e6a85762b4a28f489cfa33 (
plain)
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
|
import functools
import os
from keystone.common import config
from keystone.openstack.common import log as logging
CONF = config.CONF
LOG = logging.getLogger(__name__)
__all__ = ['Server', 'httplib', 'subprocess']
_configured = False
Server = None
httplib = None
subprocess = None
def configure_once(name):
"""Ensure that environment configuration is only run once.
If environment is reconfigured in the same way then it is ignored.
It is an error to attempt to reconfigure environment in a different way.
"""
def decorator(func):
@functools.wraps(func)
def wrapper(*args, **kwargs):
global _configured
if _configured:
if _configured == name:
return
else:
raise SystemError("Environment has already been "
"configured as %s" % _configured)
LOG.info(_("Environment configured as: %s"), name)
_configured = name
return func(*args, **kwargs)
return wrapper
return decorator
@configure_once('eventlet')
def use_eventlet(monkeypatch_thread=None):
global httplib, subprocess, Server
# This must be set before the initial import of eventlet because if
# dnspython is present in your environment then eventlet monkeypatches
# socket.getaddrinfo() with an implementation which doesn't work for IPv6.
os.environ['EVENTLET_NO_GREENDNS'] = 'yes'
import eventlet
from eventlet.green import httplib as _httplib
from eventlet.green import subprocess as _subprocess
from keystone.common.environment import eventlet_server
if monkeypatch_thread is None:
monkeypatch_thread = not os.getenv('STANDARD_THREADS')
# Raise the default from 8192 to accommodate large tokens
eventlet.wsgi.MAX_HEADER_LINE = 16384
eventlet.patcher.monkey_patch(all=False, socket=True, time=True,
thread=monkeypatch_thread)
Server = eventlet_server.Server
httplib = _httplib
subprocess = _subprocess
@configure_once('stdlib')
def use_stdlib():
global httplib, subprocess
import httplib as _httplib
import subprocess as _subprocess
httplib = _httplib
subprocess = _subprocess
|
