/
testlib.py
480 lines (389 loc) · 13.3 KB
/
testlib.py
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
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
import logging
import os
import random
import re
import signal
import socket
import subprocess
import sys
import threading
import time
import traceback
import unittest2
import mitogen.core
import mitogen.fork
import mitogen.master
import mitogen.utils
try:
import faulthandler
except ImportError:
faulthandler = None
try:
import urlparse
except ImportError:
import urllib.parse as urlparse
try:
from cStringIO import StringIO
except ImportError:
from io import StringIO
try:
BaseException
except NameError:
BaseException = Exception
LOG = logging.getLogger(__name__)
DATA_DIR = os.path.join(os.path.dirname(__file__), 'data')
sys.path.append(DATA_DIR)
if mitogen.is_master:
mitogen.utils.log_to_file()
if faulthandler is not None:
faulthandler.enable()
def get_fd_count():
"""
Return the number of FDs open by this process.
"""
import psutil
return psutil.Process().num_fds()
def data_path(suffix):
path = os.path.join(DATA_DIR, suffix)
if path.endswith('.key'):
# SSH is funny about private key permissions.
os.chmod(path, int('0600', 8))
return path
def subprocess__check_output(*popenargs, **kwargs):
# Missing from 2.6.
process = subprocess.Popen(stdout=subprocess.PIPE, *popenargs, **kwargs)
output, _ = process.communicate()
retcode = process.poll()
if retcode:
cmd = kwargs.get("args")
if cmd is None:
cmd = popenargs[0]
raise subprocess.CalledProcessError(retcode, cmd)
return output
def Popen__terminate(proc):
os.kill(proc.pid, signal.SIGTERM)
if hasattr(subprocess, 'check_output'):
subprocess__check_output = subprocess.check_output
if hasattr(subprocess.Popen, 'terminate'):
Popen__terminate = subprocess.Popen.terminate
def wait_for_port(
host,
port,
pattern=None,
connect_timeout=0.5,
receive_timeout=0.5,
overall_timeout=5.0,
sleep=0.1,
):
"""Attempt to connect to host/port, for upto overall_timeout seconds.
If a regex pattern is supplied try to find it in the initial data.
Return None on success, or raise on error.
"""
start = time.time()
end = start + overall_timeout
addr = (host, port)
while time.time() < end:
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.settimeout(connect_timeout)
try:
sock.connect(addr)
except socket.error:
# Failed to connect. So wait then retry.
time.sleep(sleep)
continue
if not pattern:
# Success: We connected & there's no banner check to perform.
sock.shutdown(socket.SHUTD_RDWR)
sock.close()
return
sock.settimeout(receive_timeout)
data = mitogen.core.b('')
found = False
while time.time() < end:
try:
resp = sock.recv(1024)
except socket.timeout:
# Server stayed up, but had no data. Retry the recv().
continue
if not resp:
# Server went away. Wait then retry the connection.
time.sleep(sleep)
break
data += resp
if re.search(mitogen.core.b(pattern), data):
found = True
break
try:
sock.shutdown(socket.SHUT_RDWR)
except socket.error:
e = sys.exc_info()[1]
# On Mac OS X - a BSD variant - the above code only succeeds if the
# operating system thinks that the socket is still open when
# shutdown() is invoked. If Python is too slow and the FIN packet
# arrives before that statement can be reached, then OS X kills the
# sock.shutdown() statement with:
#
# socket.error: [Errno 57] Socket is not connected
#
# Protect shutdown() with a try...except that catches the
# socket.error, test to make sure Errno is right, and ignore it if
# Errno matches.
if e.errno == 57:
pass
else:
raise
sock.close()
if found:
# Success: We received the banner & found the desired pattern
return
else:
# Failure: The overall timeout expired
if pattern:
raise socket.timeout('Timed out while searching for %r from %s:%s'
% (pattern, host, port))
else:
raise socket.timeout('Timed out while connecting to %s:%s'
% (host, port))
def sync_with_broker(broker, timeout=10.0):
"""
Insert a synchronization barrier between the calling thread and the Broker
thread, ensuring it has completed at least one full IO loop before
returning.
Used to block while asynchronous stuff (like defer()) happens on the
broker.
"""
sem = mitogen.core.Latch()
broker.defer(sem.put, None)
sem.get(timeout=10.0)
def log_fd_calls():
mypid = os.getpid()
l = threading.Lock()
real_pipe = os.pipe
def pipe():
l.acquire()
try:
rv = real_pipe()
if mypid == os.getpid():
sys.stdout.write('\n%s\n' % (rv,))
traceback.print_stack(limit=3)
sys.stdout.write('\n')
return rv
finally:
l.release()
os.pipe = pipe
real_socketpair = socket.socketpair
def socketpair(*args):
l.acquire()
try:
rv = real_socketpair(*args)
if mypid == os.getpid():
sys.stdout.write('\n%s -> %s\n' % (args, rv))
traceback.print_stack(limit=3)
sys.stdout.write('\n')
return rv
finally:
l.release()
socket.socketpair = socketpair
real_dup2 = os.dup2
def dup2(*args):
l.acquire()
try:
real_dup2(*args)
if mypid == os.getpid():
sys.stdout.write('\n%s\n' % (args,))
traceback.print_stack(limit=3)
sys.stdout.write('\n')
finally:
l.release()
os.dup2 = dup2
real_dup = os.dup
def dup(*args):
l.acquire()
try:
rv = real_dup(*args)
if mypid == os.getpid():
sys.stdout.write('\n%s -> %s\n' % (args, rv))
traceback.print_stack(limit=3)
sys.stdout.write('\n')
return rv
finally:
l.release()
os.dup = dup
class CaptureStreamHandler(logging.StreamHandler):
def __init__(self, *args, **kwargs):
logging.StreamHandler.__init__(self, *args, **kwargs)
self.msgs = []
def emit(self, msg):
self.msgs.append(msg)
logging.StreamHandler.emit(self, msg)
class LogCapturer(object):
def __init__(self, name=None):
self.sio = StringIO()
self.logger = logging.getLogger(name)
self.handler = CaptureStreamHandler(self.sio)
self.old_propagate = self.logger.propagate
self.old_handlers = self.logger.handlers
self.old_level = self.logger.level
def start(self):
self.logger.handlers = [self.handler]
self.logger.propagate = False
self.logger.level = logging.DEBUG
def raw(self):
return self.sio.getvalue()
def msgs(self):
return self.handler.msgs
def __enter__(self):
self.start()
return self
def __exit__(self, _1, _2, _3):
self.stop()
def stop(self):
self.logger.level = self.old_level
self.logger.handlers = self.old_handlers
self.logger.propagate = self.old_propagate
return self.raw()
class TestCase(unittest2.TestCase):
@classmethod
def setUpClass(cls):
# This is done in setUpClass() so we have a chance to run before any
# Broker() instantiations in setUp() etc.
mitogen.fork.on_fork()
cls._fd_count_before = get_fd_count()
super(TestCase, cls).setUpClass()
ALLOWED_THREADS = set([
'MainThread',
'mitogen.master.join_thread_async'
])
def _teardown_check_threads(self):
counts = {}
for thread in threading.enumerate():
name = thread.getName()
# Python 2.4: enumerate() may return stopped threads.
assert (not thread.isAlive()) or name in self.ALLOWED_THREADS, \
'Found thread %r still running after tests.' % (name,)
counts[name] = counts.get(name, 0) + 1
for name in counts:
assert counts[name] == 1, \
'Found %d copies of thread %r running after tests.' % (name,)
def _teardown_check_fds(self):
mitogen.core.Latch._on_fork()
if get_fd_count() != self._fd_count_before:
import os; os.system('lsof -p %s' % (os.getpid(),))
assert 0, "%s leaked FDs. Count before: %s, after: %s" % (
self, self._fd_count_before, get_fd_count(),
)
def tearDown(self):
self._teardown_check_threads()
self._teardown_check_fds()
super(TestCase, self).tearDown()
def assertRaises(self, exc, func, *args, **kwargs):
"""Like regular assertRaises, except return the exception that was
raised. Can't use context manager because tests must run on Python2.4"""
try:
func(*args, **kwargs)
except exc:
e = sys.exc_info()[1]
return e
except BaseException:
LOG.exception('Original exception')
e = sys.exc_info()[1]
assert 0, '%r raised %r, not %r' % (func, e, exc)
assert 0, '%r did not raise %r' % (func, exc)
def get_docker_host():
url = os.environ.get('DOCKER_HOST')
if url in (None, 'http+docker://localunixsocket'):
return 'localhost'
parsed = urlparse.urlparse(url)
return parsed.netloc.partition(':')[0]
class DockerizedSshDaemon(object):
mitogen_test_distro = os.environ.get('MITOGEN_TEST_DISTRO', 'debian')
if '-' in mitogen_test_distro:
distro, _py3 = mitogen_test_distro.split('-')
else:
distro = mitogen_test_distro
_py3 = None
if _py3 == 'py3':
python_path = '/usr/bin/python3'
else:
python_path = '/usr/bin/python'
image = 'mitogen/%s-test' % (distro,)
# 22/tcp -> 0.0.0.0:32771
PORT_RE = re.compile(r'([^/]+)/([^ ]+) -> ([^:]+):(.*)')
port = None
def _get_container_port(self):
s = subprocess__check_output(['docker', 'port', self.container_name])
for line in s.decode().splitlines():
dport, proto, baddr, bport = self.PORT_RE.match(line).groups()
if dport == '22' and proto == 'tcp':
self.port = int(bport)
self.host = self.get_host()
if self.port is None:
raise ValueError('could not find SSH port in: %r' % (s,))
def start_container(self):
self.container_name = 'mitogen-test-%08x' % (random.getrandbits(64),)
args = [
'docker',
'run',
'--detach',
'--privileged',
'--publish-all',
'--name', self.container_name,
self.image,
]
subprocess__check_output(args)
self._get_container_port()
def __init__(self):
self.start_container()
def get_host(self):
return get_docker_host()
def wait_for_sshd(self):
wait_for_port(self.get_host(), self.port, pattern='OpenSSH')
def close(self):
args = ['docker', 'rm', '-f', self.container_name]
subprocess__check_output(args)
class BrokerMixin(object):
broker_class = mitogen.master.Broker
broker_shutdown = False
def setUp(self):
super(BrokerMixin, self).setUp()
self.broker = self.broker_class()
def tearDown(self):
if not self.broker_shutdown:
self.broker.shutdown()
self.broker.join()
del self.broker
super(BrokerMixin, self).tearDown()
def sync_with_broker(self):
sync_with_broker(self.broker)
class RouterMixin(BrokerMixin):
router_class = mitogen.master.Router
def setUp(self):
super(RouterMixin, self).setUp()
self.router = self.router_class(self.broker)
def tearDown(self):
del self.router
super(RouterMixin, self).tearDown()
class DockerMixin(RouterMixin):
@classmethod
def setUpClass(cls):
super(DockerMixin, cls).setUpClass()
if os.environ.get('SKIP_DOCKER_TESTS'):
raise unittest2.SkipTest('SKIP_DOCKER_TESTS is set')
cls.dockerized_ssh = DockerizedSshDaemon()
cls.dockerized_ssh.wait_for_sshd()
@classmethod
def tearDownClass(cls):
cls.dockerized_ssh.close()
super(DockerMixin, cls).tearDownClass()
def docker_ssh(self, **kwargs):
kwargs.setdefault('hostname', self.dockerized_ssh.host)
kwargs.setdefault('port', self.dockerized_ssh.port)
kwargs.setdefault('check_host_keys', 'ignore')
kwargs.setdefault('ssh_debug_level', 3)
kwargs.setdefault('python_path', self.dockerized_ssh.python_path)
return self.router.ssh(**kwargs)
def docker_ssh_any(self, **kwargs):
return self.docker_ssh(
username='mitogen__has_sudo_nopw',
password='has_sudo_nopw_password',
)