root / test / ganeti.locking_unittest.py @ 3fc175f0
History | View | Annotate | Download (28.9 kB)
1 |
#!/usr/bin/python
|
---|---|
2 |
#
|
3 |
|
4 |
# Copyright (C) 2006, 2007 Google Inc.
|
5 |
#
|
6 |
# This program is free software; you can redistribute it and/or modify
|
7 |
# it under the terms of the GNU General Public License as published by
|
8 |
# the Free Software Foundation; either version 2 of the License, or
|
9 |
# (at your option) any later version.
|
10 |
#
|
11 |
# This program is distributed in the hope that it will be useful, but
|
12 |
# WITHOUT ANY WARRANTY; without even the implied warranty of
|
13 |
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
14 |
# General Public License for more details.
|
15 |
#
|
16 |
# You should have received a copy of the GNU General Public License
|
17 |
# along with this program; if not, write to the Free Software
|
18 |
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
19 |
# 0.0510-1301, USA.
|
20 |
|
21 |
|
22 |
"""Script for unittesting the locking module"""
|
23 |
|
24 |
|
25 |
import os |
26 |
import unittest |
27 |
import time |
28 |
import Queue |
29 |
|
30 |
from ganeti import locking |
31 |
from ganeti import errors |
32 |
from threading import Thread |
33 |
|
34 |
|
35 |
# This is used to test the ssynchronize decorator.
|
36 |
# Since it's passed as input to a decorator it must be declared as a global.
|
37 |
_decoratorlock = locking.SharedLock() |
38 |
|
39 |
|
40 |
class TestSharedLock(unittest.TestCase): |
41 |
"""SharedLock tests"""
|
42 |
|
43 |
def setUp(self): |
44 |
self.sl = locking.SharedLock()
|
45 |
# helper threads use the 'done' queue to tell the master they finished.
|
46 |
self.done = Queue.Queue(0) |
47 |
|
48 |
def testSequenceAndOwnership(self): |
49 |
self.assert_(not self.sl._is_owned()) |
50 |
self.sl.acquire(shared=1) |
51 |
self.assert_(self.sl._is_owned()) |
52 |
self.assert_(self.sl._is_owned(shared=1)) |
53 |
self.assert_(not self.sl._is_owned(shared=0)) |
54 |
self.sl.release()
|
55 |
self.assert_(not self.sl._is_owned()) |
56 |
self.sl.acquire()
|
57 |
self.assert_(self.sl._is_owned()) |
58 |
self.assert_(not self.sl._is_owned(shared=1)) |
59 |
self.assert_(self.sl._is_owned(shared=0)) |
60 |
self.sl.release()
|
61 |
self.assert_(not self.sl._is_owned()) |
62 |
self.sl.acquire(shared=1) |
63 |
self.assert_(self.sl._is_owned()) |
64 |
self.assert_(self.sl._is_owned(shared=1)) |
65 |
self.assert_(not self.sl._is_owned(shared=0)) |
66 |
self.sl.release()
|
67 |
self.assert_(not self.sl._is_owned()) |
68 |
|
69 |
def testBooleanValue(self): |
70 |
# semaphores are supposed to return a true value on a successful acquire
|
71 |
self.assert_(self.sl.acquire(shared=1)) |
72 |
self.sl.release()
|
73 |
self.assert_(self.sl.acquire()) |
74 |
self.sl.release()
|
75 |
|
76 |
def testDoubleLockingStoE(self): |
77 |
self.sl.acquire(shared=1) |
78 |
self.assertRaises(AssertionError, self.sl.acquire) |
79 |
|
80 |
def testDoubleLockingEtoS(self): |
81 |
self.sl.acquire()
|
82 |
self.assertRaises(AssertionError, self.sl.acquire, shared=1) |
83 |
|
84 |
def testDoubleLockingStoS(self): |
85 |
self.sl.acquire(shared=1) |
86 |
self.assertRaises(AssertionError, self.sl.acquire, shared=1) |
87 |
|
88 |
def testDoubleLockingEtoE(self): |
89 |
self.sl.acquire()
|
90 |
self.assertRaises(AssertionError, self.sl.acquire) |
91 |
|
92 |
# helper functions: called in a separate thread they acquire the lock, send
|
93 |
# their identifier on the done queue, then release it.
|
94 |
def _doItSharer(self): |
95 |
try:
|
96 |
self.sl.acquire(shared=1) |
97 |
self.done.put('SHR') |
98 |
self.sl.release()
|
99 |
except errors.LockError:
|
100 |
self.done.put('ERR') |
101 |
|
102 |
def _doItExclusive(self): |
103 |
try:
|
104 |
self.sl.acquire()
|
105 |
self.done.put('EXC') |
106 |
self.sl.release()
|
107 |
except errors.LockError:
|
108 |
self.done.put('ERR') |
109 |
|
110 |
def _doItDelete(self): |
111 |
try:
|
112 |
self.sl.delete()
|
113 |
self.done.put('DEL') |
114 |
except errors.LockError:
|
115 |
self.done.put('ERR') |
116 |
|
117 |
def testSharersCanCoexist(self): |
118 |
self.sl.acquire(shared=1) |
119 |
Thread(target=self._doItSharer).start()
|
120 |
self.assert_(self.done.get(True, 1)) |
121 |
self.sl.release()
|
122 |
|
123 |
def testExclusiveBlocksExclusive(self): |
124 |
self.sl.acquire()
|
125 |
Thread(target=self._doItExclusive).start()
|
126 |
# give it a bit of time to check that it's not actually doing anything
|
127 |
self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
128 |
self.sl.release()
|
129 |
self.assert_(self.done.get(True, 1)) |
130 |
|
131 |
def testExclusiveBlocksDelete(self): |
132 |
self.sl.acquire()
|
133 |
Thread(target=self._doItDelete).start()
|
134 |
# give it a bit of time to check that it's not actually doing anything
|
135 |
self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
136 |
self.sl.release()
|
137 |
self.assert_(self.done.get(True, 1)) |
138 |
|
139 |
def testExclusiveBlocksSharer(self): |
140 |
self.sl.acquire()
|
141 |
Thread(target=self._doItSharer).start()
|
142 |
time.sleep(0.05)
|
143 |
self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
144 |
self.sl.release()
|
145 |
self.assert_(self.done.get(True, 1)) |
146 |
|
147 |
def testSharerBlocksExclusive(self): |
148 |
self.sl.acquire(shared=1) |
149 |
Thread(target=self._doItExclusive).start()
|
150 |
time.sleep(0.05)
|
151 |
self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
152 |
self.sl.release()
|
153 |
self.assert_(self.done.get(True, 1)) |
154 |
|
155 |
def testSharerBlocksDelete(self): |
156 |
self.sl.acquire(shared=1) |
157 |
Thread(target=self._doItDelete).start()
|
158 |
time.sleep(0.05)
|
159 |
self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
160 |
self.sl.release()
|
161 |
self.assert_(self.done.get(True, 1)) |
162 |
|
163 |
def testWaitingExclusiveBlocksSharer(self): |
164 |
self.sl.acquire(shared=1) |
165 |
# the lock is acquired in shared mode...
|
166 |
Thread(target=self._doItExclusive).start()
|
167 |
# ...but now an exclusive is waiting...
|
168 |
time.sleep(0.05)
|
169 |
Thread(target=self._doItSharer).start()
|
170 |
# ...so the sharer should be blocked as well
|
171 |
self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
172 |
self.sl.release()
|
173 |
# The exclusive passed before
|
174 |
self.assertEqual(self.done.get(True, 1), 'EXC') |
175 |
self.assertEqual(self.done.get(True, 1), 'SHR') |
176 |
|
177 |
def testWaitingSharerBlocksExclusive(self): |
178 |
self.sl.acquire()
|
179 |
# the lock is acquired in exclusive mode...
|
180 |
Thread(target=self._doItSharer).start()
|
181 |
# ...but now a sharer is waiting...
|
182 |
time.sleep(0.05)
|
183 |
Thread(target=self._doItExclusive).start()
|
184 |
# ...the exclusive is waiting too...
|
185 |
self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
186 |
self.sl.release()
|
187 |
# The sharer passed before
|
188 |
self.assertEqual(self.done.get(True, 1), 'SHR') |
189 |
self.assertEqual(self.done.get(True, 1), 'EXC') |
190 |
|
191 |
def testNoNonBlocking(self): |
192 |
self.assertRaises(NotImplementedError, self.sl.acquire, blocking=0) |
193 |
self.assertRaises(NotImplementedError, self.sl.delete, blocking=0) |
194 |
self.sl.acquire()
|
195 |
self.sl.delete(blocking=0) # Fine, because the lock is already acquired |
196 |
|
197 |
def testDelete(self): |
198 |
self.sl.delete()
|
199 |
self.assertRaises(errors.LockError, self.sl.acquire) |
200 |
self.assertRaises(errors.LockError, self.sl.acquire, shared=1) |
201 |
self.assertRaises(errors.LockError, self.sl.delete) |
202 |
|
203 |
def testNoDeleteIfSharer(self): |
204 |
self.sl.acquire(shared=1) |
205 |
self.assertRaises(AssertionError, self.sl.delete) |
206 |
|
207 |
def testDeletePendingSharersExclusiveDelete(self): |
208 |
self.sl.acquire()
|
209 |
Thread(target=self._doItSharer).start()
|
210 |
Thread(target=self._doItSharer).start()
|
211 |
time.sleep(0.05)
|
212 |
Thread(target=self._doItExclusive).start()
|
213 |
Thread(target=self._doItDelete).start()
|
214 |
time.sleep(0.05)
|
215 |
self.sl.delete()
|
216 |
# The two threads who were pending return both ERR
|
217 |
self.assertEqual(self.done.get(True, 1), 'ERR') |
218 |
self.assertEqual(self.done.get(True, 1), 'ERR') |
219 |
self.assertEqual(self.done.get(True, 1), 'ERR') |
220 |
self.assertEqual(self.done.get(True, 1), 'ERR') |
221 |
|
222 |
def testDeletePendingDeleteExclusiveSharers(self): |
223 |
self.sl.acquire()
|
224 |
Thread(target=self._doItDelete).start()
|
225 |
Thread(target=self._doItExclusive).start()
|
226 |
time.sleep(0.05)
|
227 |
Thread(target=self._doItSharer).start()
|
228 |
Thread(target=self._doItSharer).start()
|
229 |
time.sleep(0.05)
|
230 |
self.sl.delete()
|
231 |
# The two threads who were pending return both ERR
|
232 |
self.assertEqual(self.done.get(True, 1), 'ERR') |
233 |
self.assertEqual(self.done.get(True, 1), 'ERR') |
234 |
self.assertEqual(self.done.get(True, 1), 'ERR') |
235 |
self.assertEqual(self.done.get(True, 1), 'ERR') |
236 |
|
237 |
|
238 |
class TestSSynchronizedDecorator(unittest.TestCase): |
239 |
"""Shared Lock Synchronized decorator test"""
|
240 |
|
241 |
def setUp(self): |
242 |
# helper threads use the 'done' queue to tell the master they finished.
|
243 |
self.done = Queue.Queue(0) |
244 |
|
245 |
@locking.ssynchronized(_decoratorlock)
|
246 |
def _doItExclusive(self): |
247 |
self.assert_(_decoratorlock._is_owned())
|
248 |
self.done.put('EXC') |
249 |
|
250 |
@locking.ssynchronized(_decoratorlock, shared=1) |
251 |
def _doItSharer(self): |
252 |
self.assert_(_decoratorlock._is_owned(shared=1)) |
253 |
self.done.put('SHR') |
254 |
|
255 |
def testDecoratedFunctions(self): |
256 |
self._doItExclusive()
|
257 |
self.assert_(not _decoratorlock._is_owned()) |
258 |
self._doItSharer()
|
259 |
self.assert_(not _decoratorlock._is_owned()) |
260 |
|
261 |
def testSharersCanCoexist(self): |
262 |
_decoratorlock.acquire(shared=1)
|
263 |
Thread(target=self._doItSharer).start()
|
264 |
self.assert_(self.done.get(True, 1)) |
265 |
_decoratorlock.release() |
266 |
|
267 |
def testExclusiveBlocksExclusive(self): |
268 |
_decoratorlock.acquire() |
269 |
Thread(target=self._doItExclusive).start()
|
270 |
# give it a bit of time to check that it's not actually doing anything
|
271 |
self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
272 |
_decoratorlock.release() |
273 |
self.assert_(self.done.get(True, 1)) |
274 |
|
275 |
def testExclusiveBlocksSharer(self): |
276 |
_decoratorlock.acquire() |
277 |
Thread(target=self._doItSharer).start()
|
278 |
time.sleep(0.05)
|
279 |
self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
280 |
_decoratorlock.release() |
281 |
self.assert_(self.done.get(True, 1)) |
282 |
|
283 |
def testSharerBlocksExclusive(self): |
284 |
_decoratorlock.acquire(shared=1)
|
285 |
Thread(target=self._doItExclusive).start()
|
286 |
time.sleep(0.05)
|
287 |
self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
288 |
_decoratorlock.release() |
289 |
self.assert_(self.done.get(True, 1)) |
290 |
|
291 |
|
292 |
class TestLockSet(unittest.TestCase): |
293 |
"""LockSet tests"""
|
294 |
|
295 |
def setUp(self): |
296 |
self.resources = ['one', 'two', 'three'] |
297 |
self.ls = locking.LockSet(members=self.resources) |
298 |
# helper threads use the 'done' queue to tell the master they finished.
|
299 |
self.done = Queue.Queue(0) |
300 |
|
301 |
def testResources(self): |
302 |
self.assertEquals(self.ls._names(), set(self.resources)) |
303 |
newls = locking.LockSet() |
304 |
self.assertEquals(newls._names(), set()) |
305 |
|
306 |
def testAcquireRelease(self): |
307 |
self.assert_(self.ls.acquire('one')) |
308 |
self.assertEquals(self.ls._list_owned(), set(['one'])) |
309 |
self.ls.release()
|
310 |
self.assertEquals(self.ls._list_owned(), set()) |
311 |
self.assertEquals(self.ls.acquire(['one']), set(['one'])) |
312 |
self.assertEquals(self.ls._list_owned(), set(['one'])) |
313 |
self.ls.release()
|
314 |
self.assertEquals(self.ls._list_owned(), set()) |
315 |
self.ls.acquire(['one', 'two', 'three']) |
316 |
self.assertEquals(self.ls._list_owned(), set(['one', 'two', 'three'])) |
317 |
self.ls.release('one') |
318 |
self.assertEquals(self.ls._list_owned(), set(['two', 'three'])) |
319 |
self.ls.release(['three']) |
320 |
self.assertEquals(self.ls._list_owned(), set(['two'])) |
321 |
self.ls.release()
|
322 |
self.assertEquals(self.ls._list_owned(), set()) |
323 |
self.assertEquals(self.ls.acquire(['one', 'three']), set(['one', 'three'])) |
324 |
self.assertEquals(self.ls._list_owned(), set(['one', 'three'])) |
325 |
self.ls.release()
|
326 |
self.assertEquals(self.ls._list_owned(), set()) |
327 |
|
328 |
def testNoDoubleAcquire(self): |
329 |
self.ls.acquire('one') |
330 |
self.assertRaises(AssertionError, self.ls.acquire, 'one') |
331 |
self.assertRaises(AssertionError, self.ls.acquire, ['two']) |
332 |
self.assertRaises(AssertionError, self.ls.acquire, ['two', 'three']) |
333 |
self.ls.release()
|
334 |
self.ls.acquire(['one', 'three']) |
335 |
self.ls.release('one') |
336 |
self.assertRaises(AssertionError, self.ls.acquire, ['two']) |
337 |
self.ls.release('three') |
338 |
|
339 |
def testNoWrongRelease(self): |
340 |
self.assertRaises(AssertionError, self.ls.release) |
341 |
self.ls.acquire('one') |
342 |
self.assertRaises(AssertionError, self.ls.release, 'two') |
343 |
|
344 |
def testAddRemove(self): |
345 |
self.ls.add('four') |
346 |
self.assertEquals(self.ls._list_owned(), set()) |
347 |
self.assert_('four' in self.ls._names()) |
348 |
self.ls.add(['five', 'six', 'seven'], acquired=1) |
349 |
self.assert_('five' in self.ls._names()) |
350 |
self.assert_('six' in self.ls._names()) |
351 |
self.assert_('seven' in self.ls._names()) |
352 |
self.assertEquals(self.ls._list_owned(), set(['five', 'six', 'seven'])) |
353 |
self.assertEquals(self.ls.remove(['five', 'six']), ['five', 'six']) |
354 |
self.assert_('five' not in self.ls._names()) |
355 |
self.assert_('six' not in self.ls._names()) |
356 |
self.assertEquals(self.ls._list_owned(), set(['seven'])) |
357 |
self.ls.add('eight', acquired=1, shared=1) |
358 |
self.assert_('eight' in self.ls._names()) |
359 |
self.assertEquals(self.ls._list_owned(), set(['seven', 'eight'])) |
360 |
self.ls.remove('seven') |
361 |
self.assert_('seven' not in self.ls._names()) |
362 |
self.assertEquals(self.ls._list_owned(), set(['eight'])) |
363 |
self.ls.release()
|
364 |
self.ls.remove(['two']) |
365 |
self.assert_('two' not in self.ls._names()) |
366 |
self.ls.acquire('three') |
367 |
self.assertEquals(self.ls.remove(['three']), ['three']) |
368 |
self.assert_('three' not in self.ls._names()) |
369 |
self.assertEquals(self.ls.remove('three'), []) |
370 |
self.assertEquals(self.ls.remove(['one', 'three', 'six']), ['one']) |
371 |
self.assert_('one' not in self.ls._names()) |
372 |
|
373 |
def testRemoveNonBlocking(self): |
374 |
self.assertRaises(NotImplementedError, self.ls.remove, 'one', blocking=0) |
375 |
self.ls.acquire('one') |
376 |
self.assertEquals(self.ls.remove('one', blocking=0), ['one']) |
377 |
self.ls.acquire(['two', 'three']) |
378 |
self.assertEquals(self.ls.remove(['two', 'three'], blocking=0), |
379 |
['two', 'three']) |
380 |
|
381 |
def testNoDoubleAdd(self): |
382 |
self.assertRaises(errors.LockError, self.ls.add, 'two') |
383 |
self.ls.add('four') |
384 |
self.assertRaises(errors.LockError, self.ls.add, 'four') |
385 |
|
386 |
def testNoWrongRemoves(self): |
387 |
self.ls.acquire(['one', 'three'], shared=1) |
388 |
# Cannot remove 'two' while holding something which is not a superset
|
389 |
self.assertRaises(AssertionError, self.ls.remove, 'two') |
390 |
# Cannot remove 'three' as we are sharing it
|
391 |
self.assertRaises(AssertionError, self.ls.remove, 'three') |
392 |
|
393 |
def testAcquireSetLock(self): |
394 |
# acquire the set-lock exclusively
|
395 |
self.assertEquals(self.ls.acquire(None), set(['one', 'two', 'three'])) |
396 |
# I can still add/remove elements...
|
397 |
self.assertEquals(self.ls.remove(['two', 'three']), ['two', 'three']) |
398 |
self.assert_(self.ls.add('six')) |
399 |
self.ls.release()
|
400 |
# share the set-lock
|
401 |
self.assertEquals(self.ls.acquire(None, shared=1), set(['one', 'six'])) |
402 |
# adding new elements is not possible
|
403 |
self.assertRaises(AssertionError, self.ls.add, 'five') |
404 |
self.ls.release()
|
405 |
|
406 |
def testAcquireWithRepetitions(self): |
407 |
self.assertEquals(self.ls.acquire(['two', 'two', 'three'], shared=1), |
408 |
set(['two', 'two', 'three'])) |
409 |
self.ls.release(['two', 'two']) |
410 |
self.assertEquals(self.ls._list_owned(), set(['three'])) |
411 |
|
412 |
def testEmptyAcquire(self): |
413 |
# Acquire an empty list of locks...
|
414 |
self.assertEquals(self.ls.acquire([]), set()) |
415 |
self.assertEquals(self.ls._list_owned(), set()) |
416 |
# New locks can still be addded
|
417 |
self.assert_(self.ls.add('six')) |
418 |
# "re-acquiring" is not an issue, since we had really acquired nothing
|
419 |
self.assertEquals(self.ls.acquire([], shared=1), set()) |
420 |
self.assertEquals(self.ls._list_owned(), set()) |
421 |
# We haven't really acquired anything, so we cannot release
|
422 |
self.assertRaises(AssertionError, self.ls.release) |
423 |
|
424 |
def _doLockSet(self, set, shared): |
425 |
try:
|
426 |
self.ls.acquire(set, shared=shared) |
427 |
self.done.put('DONE') |
428 |
self.ls.release()
|
429 |
except errors.LockError:
|
430 |
self.done.put('ERR') |
431 |
|
432 |
def _doAddSet(self, set): |
433 |
try:
|
434 |
self.ls.add(set, acquired=1) |
435 |
self.done.put('DONE') |
436 |
self.ls.release()
|
437 |
except errors.LockError:
|
438 |
self.done.put('ERR') |
439 |
|
440 |
def _doRemoveSet(self, set): |
441 |
self.done.put(self.ls.remove(set)) |
442 |
|
443 |
def testConcurrentSharedAcquire(self): |
444 |
self.ls.acquire(['one', 'two'], shared=1) |
445 |
Thread(target=self._doLockSet, args=(['one', 'two'], 1)).start() |
446 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
447 |
Thread(target=self._doLockSet, args=(['one', 'two', 'three'], 1)).start() |
448 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
449 |
Thread(target=self._doLockSet, args=('three', 1)).start() |
450 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
451 |
Thread(target=self._doLockSet, args=(['one', 'two'], 0)).start() |
452 |
Thread(target=self._doLockSet, args=(['two', 'three'], 0)).start() |
453 |
self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
454 |
self.ls.release()
|
455 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
456 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
457 |
|
458 |
def testConcurrentExclusiveAcquire(self): |
459 |
self.ls.acquire(['one', 'two']) |
460 |
Thread(target=self._doLockSet, args=('three', 1)).start() |
461 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
462 |
Thread(target=self._doLockSet, args=('three', 0)).start() |
463 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
464 |
Thread(target=self._doLockSet, args=(['one', 'two'], 0)).start() |
465 |
Thread(target=self._doLockSet, args=(['one', 'two'], 1)).start() |
466 |
Thread(target=self._doLockSet, args=('one', 0)).start() |
467 |
Thread(target=self._doLockSet, args=('one', 1)).start() |
468 |
Thread(target=self._doLockSet, args=(['two', 'three'], 0)).start() |
469 |
Thread(target=self._doLockSet, args=(['two', 'three'], 1)).start() |
470 |
self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
471 |
self.ls.release()
|
472 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
473 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
474 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
475 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
476 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
477 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
478 |
|
479 |
def testConcurrentRemove(self): |
480 |
self.ls.add('four') |
481 |
self.ls.acquire(['one', 'two', 'four']) |
482 |
Thread(target=self._doLockSet, args=(['one', 'four'], 0)).start() |
483 |
Thread(target=self._doLockSet, args=(['one', 'four'], 1)).start() |
484 |
Thread(target=self._doLockSet, args=(['one', 'two'], 0)).start() |
485 |
Thread(target=self._doLockSet, args=(['one', 'two'], 1)).start() |
486 |
self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
487 |
self.ls.remove('one') |
488 |
self.ls.release()
|
489 |
self.assertEqual(self.done.get(True, 1), 'ERR') |
490 |
self.assertEqual(self.done.get(True, 1), 'ERR') |
491 |
self.assertEqual(self.done.get(True, 1), 'ERR') |
492 |
self.assertEqual(self.done.get(True, 1), 'ERR') |
493 |
self.ls.add(['five', 'six'], acquired=1) |
494 |
Thread(target=self._doLockSet, args=(['three', 'six'], 1)).start() |
495 |
Thread(target=self._doLockSet, args=(['three', 'six'], 0)).start() |
496 |
Thread(target=self._doLockSet, args=(['four', 'six'], 1)).start() |
497 |
Thread(target=self._doLockSet, args=(['four', 'six'], 0)).start() |
498 |
self.ls.remove('five') |
499 |
self.ls.release()
|
500 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
501 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
502 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
503 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
504 |
self.ls.acquire(['three', 'four']) |
505 |
Thread(target=self._doRemoveSet, args=(['four', 'six'], )).start() |
506 |
self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
507 |
self.ls.remove('four') |
508 |
self.assertEqual(self.done.get(True, 1), ['six']) |
509 |
Thread(target=self._doRemoveSet, args=(['two'])).start() |
510 |
self.assertEqual(self.done.get(True, 1), ['two']) |
511 |
self.ls.release()
|
512 |
|
513 |
def testConcurrentSharedSetLock(self): |
514 |
# share the set-lock...
|
515 |
self.ls.acquire(None, shared=1) |
516 |
# ...another thread can share it too
|
517 |
Thread(target=self._doLockSet, args=(None, 1)).start() |
518 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
519 |
# ...or just share some elements
|
520 |
Thread(target=self._doLockSet, args=(['one', 'three'], 1)).start() |
521 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
522 |
# ...but not add new ones or remove any
|
523 |
Thread(target=self._doAddSet, args=(['nine'])).start() |
524 |
Thread(target=self._doRemoveSet, args=(['two'], )).start() |
525 |
self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
526 |
# this just releases the set-lock
|
527 |
self.ls.release([])
|
528 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
529 |
# release the lock on the actual elements so remove() can proceed too
|
530 |
self.ls.release()
|
531 |
self.assertEqual(self.done.get(True, 1), ['two']) |
532 |
|
533 |
def testConcurrentExclusiveSetLock(self): |
534 |
# acquire the set-lock...
|
535 |
self.ls.acquire(None, shared=0) |
536 |
# ...no one can do anything else
|
537 |
Thread(target=self._doLockSet, args=(None, 1)).start() |
538 |
Thread(target=self._doLockSet, args=(None, 0)).start() |
539 |
Thread(target=self._doLockSet, args=(['three'], 0)).start() |
540 |
Thread(target=self._doLockSet, args=(['two'], 1)).start() |
541 |
Thread(target=self._doAddSet, args=(['nine'])).start() |
542 |
self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
543 |
self.ls.release()
|
544 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
545 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
546 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
547 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
548 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
549 |
|
550 |
def testEmptyLockSet(self): |
551 |
# get the set-lock
|
552 |
self.assertEqual(self.ls.acquire(None), set(['one', 'two', 'three'])) |
553 |
# now empty it...
|
554 |
self.ls.remove(['one', 'two', 'three']) |
555 |
# and adds/locks by another thread still wait
|
556 |
Thread(target=self._doAddSet, args=(['nine'])).start() |
557 |
Thread(target=self._doLockSet, args=(None, 1)).start() |
558 |
Thread(target=self._doLockSet, args=(None, 0)).start() |
559 |
self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
560 |
self.ls.release()
|
561 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
562 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
563 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
564 |
# empty it again...
|
565 |
self.assertEqual(self.ls.remove(['nine']), ['nine']) |
566 |
# now share it...
|
567 |
self.assertEqual(self.ls.acquire(None, shared=1), set()) |
568 |
# other sharers can go, adds still wait
|
569 |
Thread(target=self._doLockSet, args=(None, 1)).start() |
570 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
571 |
Thread(target=self._doAddSet, args=(['nine'])).start() |
572 |
self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
573 |
self.ls.release()
|
574 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
575 |
|
576 |
|
577 |
class TestGanetiLockManager(unittest.TestCase): |
578 |
|
579 |
def setUp(self): |
580 |
self.nodes=['n1', 'n2'] |
581 |
self.instances=['i1', 'i2', 'i3'] |
582 |
self.GL = locking.GanetiLockManager(nodes=self.nodes, |
583 |
instances=self.instances)
|
584 |
self.done = Queue.Queue(0) |
585 |
|
586 |
def tearDown(self): |
587 |
# Don't try this at home...
|
588 |
locking.GanetiLockManager._instance = None
|
589 |
|
590 |
def testLockingConstants(self): |
591 |
# The locking library internally cheats by assuming its constants have some
|
592 |
# relationships with each other. Check those hold true.
|
593 |
# This relationship is also used in the Processor to recursively acquire
|
594 |
# the right locks. Again, please don't break it.
|
595 |
for i in range(len(locking.LEVELS)): |
596 |
self.assertEqual(i, locking.LEVELS[i])
|
597 |
|
598 |
def testDoubleGLFails(self): |
599 |
self.assertRaises(AssertionError, locking.GanetiLockManager) |
600 |
|
601 |
def testLockNames(self): |
602 |
self.assertEqual(self.GL._names(locking.LEVEL_CLUSTER), set(['BGL'])) |
603 |
self.assertEqual(self.GL._names(locking.LEVEL_NODE), set(self.nodes)) |
604 |
self.assertEqual(self.GL._names(locking.LEVEL_INSTANCE), |
605 |
set(self.instances)) |
606 |
|
607 |
def testInitAndResources(self): |
608 |
locking.GanetiLockManager._instance = None
|
609 |
self.GL = locking.GanetiLockManager()
|
610 |
self.assertEqual(self.GL._names(locking.LEVEL_CLUSTER), set(['BGL'])) |
611 |
self.assertEqual(self.GL._names(locking.LEVEL_NODE), set()) |
612 |
self.assertEqual(self.GL._names(locking.LEVEL_INSTANCE), set()) |
613 |
|
614 |
locking.GanetiLockManager._instance = None
|
615 |
self.GL = locking.GanetiLockManager(nodes=self.nodes) |
616 |
self.assertEqual(self.GL._names(locking.LEVEL_CLUSTER), set(['BGL'])) |
617 |
self.assertEqual(self.GL._names(locking.LEVEL_NODE), set(self.nodes)) |
618 |
self.assertEqual(self.GL._names(locking.LEVEL_INSTANCE), set()) |
619 |
|
620 |
locking.GanetiLockManager._instance = None
|
621 |
self.GL = locking.GanetiLockManager(instances=self.instances) |
622 |
self.assertEqual(self.GL._names(locking.LEVEL_CLUSTER), set(['BGL'])) |
623 |
self.assertEqual(self.GL._names(locking.LEVEL_NODE), set()) |
624 |
self.assertEqual(self.GL._names(locking.LEVEL_INSTANCE), |
625 |
set(self.instances)) |
626 |
|
627 |
def testAcquireRelease(self): |
628 |
self.GL.acquire(locking.LEVEL_CLUSTER, ['BGL'], shared=1) |
629 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_CLUSTER), set(['BGL'])) |
630 |
self.GL.acquire(locking.LEVEL_INSTANCE, ['i1']) |
631 |
self.GL.acquire(locking.LEVEL_NODE, ['n1', 'n2'], shared=1) |
632 |
self.GL.release(locking.LEVEL_NODE, ['n2']) |
633 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_NODE), set(['n1'])) |
634 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_INSTANCE), set(['i1'])) |
635 |
self.GL.release(locking.LEVEL_NODE)
|
636 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_NODE), set()) |
637 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_INSTANCE), set(['i1'])) |
638 |
self.GL.release(locking.LEVEL_INSTANCE)
|
639 |
self.assertRaises(errors.LockError, self.GL.acquire, |
640 |
locking.LEVEL_INSTANCE, ['i5'])
|
641 |
self.GL.acquire(locking.LEVEL_INSTANCE, ['i3'], shared=1) |
642 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_INSTANCE), set(['i3'])) |
643 |
|
644 |
def testAcquireWholeSets(self): |
645 |
self.GL.acquire(locking.LEVEL_CLUSTER, ['BGL'], shared=1) |
646 |
self.assertEquals(self.GL.acquire(locking.LEVEL_INSTANCE, None), |
647 |
set(self.instances)) |
648 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_INSTANCE), |
649 |
set(self.instances)) |
650 |
self.assertEquals(self.GL.acquire(locking.LEVEL_NODE, None, shared=1), |
651 |
set(self.nodes)) |
652 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_NODE), |
653 |
set(self.nodes)) |
654 |
self.GL.release(locking.LEVEL_NODE)
|
655 |
self.GL.release(locking.LEVEL_INSTANCE)
|
656 |
self.GL.release(locking.LEVEL_CLUSTER)
|
657 |
|
658 |
def testAcquireWholeAndPartial(self): |
659 |
self.GL.acquire(locking.LEVEL_CLUSTER, ['BGL'], shared=1) |
660 |
self.assertEquals(self.GL.acquire(locking.LEVEL_INSTANCE, None), |
661 |
set(self.instances)) |
662 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_INSTANCE), |
663 |
set(self.instances)) |
664 |
self.assertEquals(self.GL.acquire(locking.LEVEL_NODE, ['n2'], shared=1), |
665 |
set(['n2'])) |
666 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_NODE), |
667 |
set(['n2'])) |
668 |
self.GL.release(locking.LEVEL_NODE)
|
669 |
self.GL.release(locking.LEVEL_INSTANCE)
|
670 |
self.GL.release(locking.LEVEL_CLUSTER)
|
671 |
|
672 |
def testBGLDependency(self): |
673 |
self.assertRaises(AssertionError, self.GL.acquire, |
674 |
locking.LEVEL_NODE, ['n1', 'n2']) |
675 |
self.assertRaises(AssertionError, self.GL.acquire, |
676 |
locking.LEVEL_INSTANCE, ['i3'])
|
677 |
self.GL.acquire(locking.LEVEL_CLUSTER, ['BGL'], shared=1) |
678 |
self.GL.acquire(locking.LEVEL_NODE, ['n1']) |
679 |
self.assertRaises(AssertionError, self.GL.release, |
680 |
locking.LEVEL_CLUSTER, ['BGL'])
|
681 |
self.assertRaises(AssertionError, self.GL.release, |
682 |
locking.LEVEL_CLUSTER) |
683 |
self.GL.release(locking.LEVEL_NODE)
|
684 |
self.GL.acquire(locking.LEVEL_INSTANCE, ['i1', 'i2']) |
685 |
self.assertRaises(AssertionError, self.GL.release, |
686 |
locking.LEVEL_CLUSTER, ['BGL'])
|
687 |
self.assertRaises(AssertionError, self.GL.release, |
688 |
locking.LEVEL_CLUSTER) |
689 |
self.GL.release(locking.LEVEL_INSTANCE)
|
690 |
|
691 |
def testWrongOrder(self): |
692 |
self.GL.acquire(locking.LEVEL_CLUSTER, ['BGL'], shared=1) |
693 |
self.GL.acquire(locking.LEVEL_NODE, ['n2']) |
694 |
self.assertRaises(AssertionError, self.GL.acquire, |
695 |
locking.LEVEL_NODE, ['n1'])
|
696 |
self.assertRaises(AssertionError, self.GL.acquire, |
697 |
locking.LEVEL_INSTANCE, ['i2'])
|
698 |
|
699 |
# Helper function to run as a thread that shared the BGL and then acquires
|
700 |
# some locks at another level.
|
701 |
def _doLock(self, level, names, shared): |
702 |
try:
|
703 |
self.GL.acquire(locking.LEVEL_CLUSTER, ['BGL'], shared=1) |
704 |
self.GL.acquire(level, names, shared=shared)
|
705 |
self.done.put('DONE') |
706 |
self.GL.release(level)
|
707 |
self.GL.release(locking.LEVEL_CLUSTER)
|
708 |
except errors.LockError:
|
709 |
self.done.put('ERR') |
710 |
|
711 |
def testConcurrency(self): |
712 |
self.GL.acquire(locking.LEVEL_CLUSTER, ['BGL'], shared=1) |
713 |
Thread(target=self._doLock, args=(locking.LEVEL_INSTANCE, 'i1', 1)).start() |
714 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
715 |
self.GL.acquire(locking.LEVEL_INSTANCE, ['i3']) |
716 |
Thread(target=self._doLock, args=(locking.LEVEL_INSTANCE, 'i1', 1)).start() |
717 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
718 |
Thread(target=self._doLock, args=(locking.LEVEL_INSTANCE, 'i3', 1)).start() |
719 |
self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
720 |
self.GL.release(locking.LEVEL_INSTANCE)
|
721 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
722 |
self.GL.acquire(locking.LEVEL_INSTANCE, ['i2'], shared=1) |
723 |
Thread(target=self._doLock, args=(locking.LEVEL_INSTANCE, 'i2', 1)).start() |
724 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
725 |
Thread(target=self._doLock, args=(locking.LEVEL_INSTANCE, 'i2', 0)).start() |
726 |
self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
727 |
self.GL.release(locking.LEVEL_INSTANCE)
|
728 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
729 |
|
730 |
|
731 |
if __name__ == '__main__': |
732 |
unittest.main() |
733 |
#suite = unittest.TestLoader().loadTestsFromTestCase(TestSharedLock)
|
734 |
#unittest.TextTestRunner(verbosity=2).run(suite)
|