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
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
|
# -*- coding: utf-8 -
#
# This file is part of gunicorn released under the MIT license.
# See the NOTICE for more information.
import os
import sys
from datetime import datetime
from functools import partial
import time
try:
import gevent
except ImportError:
raise RuntimeError("gevent worker requires gevent 1.4 or higher")
else:
from packaging.version import parse as parse_version
if parse_version(gevent.__version__) < parse_version('1.4'):
raise RuntimeError("gevent worker requires gevent 1.4 or higher")
from gevent.pool import Pool
from gevent.server import StreamServer
from gevent import hub, monkey, socket, pywsgi
import gunicorn
from gunicorn.http.wsgi import base_environ
from gunicorn.sock import ssl_context
from gunicorn.workers.base_async import AsyncWorker
VERSION = "gevent/%s gunicorn/%s" % (gevent.__version__, gunicorn.__version__)
class GeventWorker(AsyncWorker):
server_class = None
wsgi_handler = None
def patch(self):
monkey.patch_all()
# patch sockets
sockets = []
for s in self.sockets:
sockets.append(socket.socket(s.FAMILY, socket.SOCK_STREAM,
fileno=s.sock.fileno()))
self.sockets = sockets
def notify(self):
super().notify()
if self.ppid != os.getppid():
self.log.info("Parent changed, shutting down: %s", self)
sys.exit(0)
def timeout_ctx(self):
return gevent.Timeout(self.cfg.keepalive, False)
def run(self):
servers = []
ssl_args = {}
if self.cfg.is_ssl:
ssl_args = {"ssl_context": ssl_context(self.cfg)}
for s in self.sockets:
s.setblocking(1)
pool = Pool(self.worker_connections)
if self.server_class is not None:
environ = base_environ(self.cfg)
environ.update({
"wsgi.multithread": True,
"SERVER_SOFTWARE": VERSION,
})
server = self.server_class(
s, application=self.wsgi, spawn=pool, log=self.log,
handler_class=self.wsgi_handler, environ=environ,
**ssl_args)
else:
hfun = partial(self.handle, s)
server = StreamServer(s, handle=hfun, spawn=pool, **ssl_args)
if self.cfg.workers > 1:
server.max_accept = 1
server.start()
servers.append(server)
while self.alive:
self.notify()
gevent.sleep(1.0)
try:
# Stop accepting requests
for server in servers:
if hasattr(server, 'close'): # gevent 1.0
server.close()
if hasattr(server, 'kill'): # gevent < 1.0
server.kill()
# Handle current requests until graceful_timeout
ts = time.time()
while time.time() - ts <= self.cfg.graceful_timeout:
accepting = 0
for server in servers:
if server.pool.free_count() != server.pool.size:
accepting += 1
# if no server is accepting a connection, we can exit
if not accepting:
return
self.notify()
gevent.sleep(1.0)
# Force kill all active the handlers
self.log.warning("Worker graceful timeout (pid:%s)", self.pid)
for server in servers:
server.stop(timeout=1)
except Exception:
pass
def handle(self, listener, client, addr):
# Connected socket timeout defaults to socket.getdefaulttimeout().
# This forces to blocking mode.
client.setblocking(1)
super().handle(listener, client, addr)
def handle_request(self, listener_name, req, sock, addr):
try:
super().handle_request(listener_name, req, sock, addr)
except gevent.GreenletExit:
pass
except SystemExit:
pass
def handle_quit(self, sig, frame):
# Move this out of the signal handler so we can use
# blocking calls. See #1126
gevent.spawn(super().handle_quit, sig, frame)
def handle_usr1(self, sig, frame):
# Make the gevent workers handle the usr1 signal
# by deferring to a new greenlet. See #1645
gevent.spawn(super().handle_usr1, sig, frame)
def init_process(self):
self.patch()
hub.reinit()
super().init_process()
class GeventResponse(object):
status = None
headers = None
sent = None
def __init__(self, status, headers, clength):
self.status = status
self.headers = headers
self.sent = clength
class PyWSGIHandler(pywsgi.WSGIHandler):
def log_request(self):
start = datetime.fromtimestamp(self.time_start)
finish = datetime.fromtimestamp(self.time_finish)
response_time = finish - start
resp_headers = getattr(self, 'response_headers', {})
resp = GeventResponse(self.status, resp_headers, self.response_length)
if hasattr(self, 'headers'):
req_headers = self.headers.items()
else:
req_headers = []
self.server.log.access(resp, req_headers, self.environ, response_time)
def get_environ(self):
env = super().get_environ()
env['gunicorn.sock'] = self.socket
env['RAW_URI'] = self.path
return env
class PyWSGIServer(pywsgi.WSGIServer):
pass
class GeventPyWSGIWorker(GeventWorker):
"The Gevent StreamServer based workers."
server_class = PyWSGIServer
wsgi_handler = PyWSGIHandler
|
