root / test / ganeti.locking_unittest.py @ 84152b96
History | View | Annotate | Download (7.7 kB)
1 | 162c1c1f | Guido Trotter | #!/usr/bin/python
|
---|---|---|---|
2 | 162c1c1f | Guido Trotter | #
|
3 | 162c1c1f | Guido Trotter | |
4 | 162c1c1f | Guido Trotter | # Copyright (C) 2006, 2007 Google Inc.
|
5 | 162c1c1f | Guido Trotter | #
|
6 | 162c1c1f | Guido Trotter | # This program is free software; you can redistribute it and/or modify
|
7 | 162c1c1f | Guido Trotter | # it under the terms of the GNU General Public License as published by
|
8 | 162c1c1f | Guido Trotter | # the Free Software Foundation; either version 2 of the License, or
|
9 | 162c1c1f | Guido Trotter | # (at your option) any later version.
|
10 | 162c1c1f | Guido Trotter | #
|
11 | 162c1c1f | Guido Trotter | # This program is distributed in the hope that it will be useful, but
|
12 | 162c1c1f | Guido Trotter | # WITHOUT ANY WARRANTY; without even the implied warranty of
|
13 | 162c1c1f | Guido Trotter | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
14 | 162c1c1f | Guido Trotter | # General Public License for more details.
|
15 | 162c1c1f | Guido Trotter | #
|
16 | 162c1c1f | Guido Trotter | # You should have received a copy of the GNU General Public License
|
17 | 162c1c1f | Guido Trotter | # along with this program; if not, write to the Free Software
|
18 | 162c1c1f | Guido Trotter | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
19 | 162c1c1f | Guido Trotter | # 0.0510-1301, USA.
|
20 | 162c1c1f | Guido Trotter | |
21 | 162c1c1f | Guido Trotter | |
22 | 162c1c1f | Guido Trotter | """Script for unittesting the locking module"""
|
23 | 162c1c1f | Guido Trotter | |
24 | 162c1c1f | Guido Trotter | |
25 | 162c1c1f | Guido Trotter | import os |
26 | 162c1c1f | Guido Trotter | import unittest |
27 | 162c1c1f | Guido Trotter | import time |
28 | 162c1c1f | Guido Trotter | import Queue |
29 | 162c1c1f | Guido Trotter | |
30 | 162c1c1f | Guido Trotter | from ganeti import locking |
31 | a95fd5d7 | Guido Trotter | from ganeti import errors |
32 | 162c1c1f | Guido Trotter | from threading import Thread |
33 | 162c1c1f | Guido Trotter | |
34 | 162c1c1f | Guido Trotter | |
35 | 162c1c1f | Guido Trotter | class TestSharedLock(unittest.TestCase): |
36 | d6646186 | Guido Trotter | """SharedLock tests"""
|
37 | 162c1c1f | Guido Trotter | |
38 | 162c1c1f | Guido Trotter | def setUp(self): |
39 | 162c1c1f | Guido Trotter | self.sl = locking.SharedLock()
|
40 | 162c1c1f | Guido Trotter | # helper threads use the 'done' queue to tell the master they finished.
|
41 | 162c1c1f | Guido Trotter | self.done = Queue.Queue(0) |
42 | 162c1c1f | Guido Trotter | |
43 | 162c1c1f | Guido Trotter | def testSequenceAndOwnership(self): |
44 | 162c1c1f | Guido Trotter | self.assert_(not self.sl._is_owned()) |
45 | 162c1c1f | Guido Trotter | self.sl.acquire(shared=1) |
46 | 162c1c1f | Guido Trotter | self.assert_(self.sl._is_owned()) |
47 | 162c1c1f | Guido Trotter | self.assert_(self.sl._is_owned(shared=1)) |
48 | 162c1c1f | Guido Trotter | self.assert_(not self.sl._is_owned(shared=0)) |
49 | 162c1c1f | Guido Trotter | self.sl.release()
|
50 | 162c1c1f | Guido Trotter | self.assert_(not self.sl._is_owned()) |
51 | 162c1c1f | Guido Trotter | self.sl.acquire()
|
52 | 162c1c1f | Guido Trotter | self.assert_(self.sl._is_owned()) |
53 | 162c1c1f | Guido Trotter | self.assert_(not self.sl._is_owned(shared=1)) |
54 | 162c1c1f | Guido Trotter | self.assert_(self.sl._is_owned(shared=0)) |
55 | 162c1c1f | Guido Trotter | self.sl.release()
|
56 | 162c1c1f | Guido Trotter | self.assert_(not self.sl._is_owned()) |
57 | 162c1c1f | Guido Trotter | self.sl.acquire(shared=1) |
58 | 162c1c1f | Guido Trotter | self.assert_(self.sl._is_owned()) |
59 | 162c1c1f | Guido Trotter | self.assert_(self.sl._is_owned(shared=1)) |
60 | 162c1c1f | Guido Trotter | self.assert_(not self.sl._is_owned(shared=0)) |
61 | 162c1c1f | Guido Trotter | self.sl.release()
|
62 | 162c1c1f | Guido Trotter | self.assert_(not self.sl._is_owned()) |
63 | 162c1c1f | Guido Trotter | |
64 | 162c1c1f | Guido Trotter | def testBooleanValue(self): |
65 | 162c1c1f | Guido Trotter | # semaphores are supposed to return a true value on a successful acquire
|
66 | 162c1c1f | Guido Trotter | self.assert_(self.sl.acquire(shared=1)) |
67 | 162c1c1f | Guido Trotter | self.sl.release()
|
68 | 162c1c1f | Guido Trotter | self.assert_(self.sl.acquire()) |
69 | 162c1c1f | Guido Trotter | self.sl.release()
|
70 | 162c1c1f | Guido Trotter | |
71 | 162c1c1f | Guido Trotter | def testDoubleLockingStoE(self): |
72 | 162c1c1f | Guido Trotter | self.sl.acquire(shared=1) |
73 | 162c1c1f | Guido Trotter | self.assertRaises(AssertionError, self.sl.acquire) |
74 | 162c1c1f | Guido Trotter | |
75 | 162c1c1f | Guido Trotter | def testDoubleLockingEtoS(self): |
76 | 162c1c1f | Guido Trotter | self.sl.acquire()
|
77 | 162c1c1f | Guido Trotter | self.assertRaises(AssertionError, self.sl.acquire, shared=1) |
78 | 162c1c1f | Guido Trotter | |
79 | 162c1c1f | Guido Trotter | def testDoubleLockingStoS(self): |
80 | 162c1c1f | Guido Trotter | self.sl.acquire(shared=1) |
81 | 162c1c1f | Guido Trotter | self.assertRaises(AssertionError, self.sl.acquire, shared=1) |
82 | 162c1c1f | Guido Trotter | |
83 | 162c1c1f | Guido Trotter | def testDoubleLockingEtoE(self): |
84 | 162c1c1f | Guido Trotter | self.sl.acquire()
|
85 | 162c1c1f | Guido Trotter | self.assertRaises(AssertionError, self.sl.acquire) |
86 | 162c1c1f | Guido Trotter | |
87 | 162c1c1f | Guido Trotter | # helper functions: called in a separate thread they acquire the lock, send
|
88 | 162c1c1f | Guido Trotter | # their identifier on the done queue, then release it.
|
89 | 162c1c1f | Guido Trotter | def _doItSharer(self): |
90 | a95fd5d7 | Guido Trotter | try:
|
91 | a95fd5d7 | Guido Trotter | self.sl.acquire(shared=1) |
92 | a95fd5d7 | Guido Trotter | self.done.put('SHR') |
93 | a95fd5d7 | Guido Trotter | self.sl.release()
|
94 | a95fd5d7 | Guido Trotter | except errors.LockError:
|
95 | a95fd5d7 | Guido Trotter | self.done.put('ERR') |
96 | 162c1c1f | Guido Trotter | |
97 | 162c1c1f | Guido Trotter | def _doItExclusive(self): |
98 | a95fd5d7 | Guido Trotter | try:
|
99 | a95fd5d7 | Guido Trotter | self.sl.acquire()
|
100 | a95fd5d7 | Guido Trotter | self.done.put('EXC') |
101 | a95fd5d7 | Guido Trotter | self.sl.release()
|
102 | a95fd5d7 | Guido Trotter | except errors.LockError:
|
103 | a95fd5d7 | Guido Trotter | self.done.put('ERR') |
104 | a95fd5d7 | Guido Trotter | |
105 | a95fd5d7 | Guido Trotter | def _doItDelete(self): |
106 | a95fd5d7 | Guido Trotter | try:
|
107 | 4354ab03 | Guido Trotter | self.sl.delete()
|
108 | a95fd5d7 | Guido Trotter | self.done.put('DEL') |
109 | a95fd5d7 | Guido Trotter | except errors.LockError:
|
110 | a95fd5d7 | Guido Trotter | self.done.put('ERR') |
111 | 162c1c1f | Guido Trotter | |
112 | 162c1c1f | Guido Trotter | def testSharersCanCoexist(self): |
113 | 162c1c1f | Guido Trotter | self.sl.acquire(shared=1) |
114 | 162c1c1f | Guido Trotter | Thread(target=self._doItSharer).start()
|
115 | 162c1c1f | Guido Trotter | self.assert_(self.done.get(True, 1)) |
116 | 162c1c1f | Guido Trotter | self.sl.release()
|
117 | 162c1c1f | Guido Trotter | |
118 | 162c1c1f | Guido Trotter | def testExclusiveBlocksExclusive(self): |
119 | 162c1c1f | Guido Trotter | self.sl.acquire()
|
120 | 162c1c1f | Guido Trotter | Thread(target=self._doItExclusive).start()
|
121 | 162c1c1f | Guido Trotter | # give it a bit of time to check that it's not actually doing anything
|
122 | 162c1c1f | Guido Trotter | self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
123 | 162c1c1f | Guido Trotter | self.sl.release()
|
124 | 162c1c1f | Guido Trotter | self.assert_(self.done.get(True, 1)) |
125 | 162c1c1f | Guido Trotter | |
126 | a95fd5d7 | Guido Trotter | def testExclusiveBlocksDelete(self): |
127 | a95fd5d7 | Guido Trotter | self.sl.acquire()
|
128 | a95fd5d7 | Guido Trotter | Thread(target=self._doItDelete).start()
|
129 | a95fd5d7 | Guido Trotter | # give it a bit of time to check that it's not actually doing anything
|
130 | a95fd5d7 | Guido Trotter | self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
131 | a95fd5d7 | Guido Trotter | self.sl.release()
|
132 | a95fd5d7 | Guido Trotter | self.assert_(self.done.get(True, 1)) |
133 | a95fd5d7 | Guido Trotter | |
134 | 162c1c1f | Guido Trotter | def testExclusiveBlocksSharer(self): |
135 | 162c1c1f | Guido Trotter | self.sl.acquire()
|
136 | 162c1c1f | Guido Trotter | Thread(target=self._doItSharer).start()
|
137 | 162c1c1f | Guido Trotter | time.sleep(0.05)
|
138 | 162c1c1f | Guido Trotter | self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
139 | 162c1c1f | Guido Trotter | self.sl.release()
|
140 | 162c1c1f | Guido Trotter | self.assert_(self.done.get(True, 1)) |
141 | 162c1c1f | Guido Trotter | |
142 | 162c1c1f | Guido Trotter | def testSharerBlocksExclusive(self): |
143 | 162c1c1f | Guido Trotter | self.sl.acquire(shared=1) |
144 | 162c1c1f | Guido Trotter | Thread(target=self._doItExclusive).start()
|
145 | 162c1c1f | Guido Trotter | time.sleep(0.05)
|
146 | 162c1c1f | Guido Trotter | self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
147 | 162c1c1f | Guido Trotter | self.sl.release()
|
148 | 162c1c1f | Guido Trotter | self.assert_(self.done.get(True, 1)) |
149 | 162c1c1f | Guido Trotter | |
150 | a95fd5d7 | Guido Trotter | def testSharerBlocksDelete(self): |
151 | a95fd5d7 | Guido Trotter | self.sl.acquire(shared=1) |
152 | a95fd5d7 | Guido Trotter | Thread(target=self._doItDelete).start()
|
153 | a95fd5d7 | Guido Trotter | time.sleep(0.05)
|
154 | a95fd5d7 | Guido Trotter | self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
155 | a95fd5d7 | Guido Trotter | self.sl.release()
|
156 | a95fd5d7 | Guido Trotter | self.assert_(self.done.get(True, 1)) |
157 | a95fd5d7 | Guido Trotter | |
158 | 162c1c1f | Guido Trotter | def testWaitingExclusiveBlocksSharer(self): |
159 | 162c1c1f | Guido Trotter | self.sl.acquire(shared=1) |
160 | 162c1c1f | Guido Trotter | # the lock is acquired in shared mode...
|
161 | 162c1c1f | Guido Trotter | Thread(target=self._doItExclusive).start()
|
162 | 162c1c1f | Guido Trotter | # ...but now an exclusive is waiting...
|
163 | 162c1c1f | Guido Trotter | time.sleep(0.05)
|
164 | 162c1c1f | Guido Trotter | Thread(target=self._doItSharer).start()
|
165 | 162c1c1f | Guido Trotter | # ...so the sharer should be blocked as well
|
166 | 162c1c1f | Guido Trotter | self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
167 | 162c1c1f | Guido Trotter | self.sl.release()
|
168 | 162c1c1f | Guido Trotter | # The exclusive passed before
|
169 | 162c1c1f | Guido Trotter | self.assertEqual(self.done.get(True, 1), 'EXC') |
170 | 162c1c1f | Guido Trotter | self.assertEqual(self.done.get(True, 1), 'SHR') |
171 | 162c1c1f | Guido Trotter | |
172 | 162c1c1f | Guido Trotter | def testWaitingSharerBlocksExclusive(self): |
173 | 162c1c1f | Guido Trotter | self.sl.acquire()
|
174 | 162c1c1f | Guido Trotter | # the lock is acquired in exclusive mode...
|
175 | 162c1c1f | Guido Trotter | Thread(target=self._doItSharer).start()
|
176 | 162c1c1f | Guido Trotter | # ...but now a sharer is waiting...
|
177 | 162c1c1f | Guido Trotter | time.sleep(0.05)
|
178 | 162c1c1f | Guido Trotter | Thread(target=self._doItExclusive).start()
|
179 | 162c1c1f | Guido Trotter | # ...the exclusive is waiting too...
|
180 | 162c1c1f | Guido Trotter | self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
181 | 162c1c1f | Guido Trotter | self.sl.release()
|
182 | 162c1c1f | Guido Trotter | # The sharer passed before
|
183 | 162c1c1f | Guido Trotter | self.assertEqual(self.done.get(True, 1), 'SHR') |
184 | 162c1c1f | Guido Trotter | self.assertEqual(self.done.get(True, 1), 'EXC') |
185 | 162c1c1f | Guido Trotter | |
186 | a95fd5d7 | Guido Trotter | def testNoNonBlocking(self): |
187 | a95fd5d7 | Guido Trotter | self.assertRaises(NotImplementedError, self.sl.acquire, blocking=0) |
188 | a95fd5d7 | Guido Trotter | self.assertRaises(NotImplementedError, self.sl.delete, blocking=0) |
189 | a95fd5d7 | Guido Trotter | self.sl.acquire()
|
190 | a95fd5d7 | Guido Trotter | self.sl.delete(blocking=0) # Fine, because the lock is already acquired |
191 | a95fd5d7 | Guido Trotter | |
192 | a95fd5d7 | Guido Trotter | def testDelete(self): |
193 | a95fd5d7 | Guido Trotter | self.sl.delete()
|
194 | a95fd5d7 | Guido Trotter | self.assertRaises(errors.LockError, self.sl.acquire) |
195 | 84152b96 | Guido Trotter | self.assertRaises(errors.LockError, self.sl.acquire, shared=1) |
196 | a95fd5d7 | Guido Trotter | self.assertRaises(errors.LockError, self.sl.delete) |
197 | a95fd5d7 | Guido Trotter | |
198 | 84152b96 | Guido Trotter | def testNoDeleteIfSharer(self): |
199 | 84152b96 | Guido Trotter | self.sl.acquire(shared=1) |
200 | 84152b96 | Guido Trotter | self.assertRaises(AssertionError, self.sl.delete) |
201 | 84152b96 | Guido Trotter | |
202 | a95fd5d7 | Guido Trotter | def testDeletePendingSharersExclusiveDelete(self): |
203 | a95fd5d7 | Guido Trotter | self.sl.acquire()
|
204 | a95fd5d7 | Guido Trotter | Thread(target=self._doItSharer).start()
|
205 | a95fd5d7 | Guido Trotter | Thread(target=self._doItSharer).start()
|
206 | a95fd5d7 | Guido Trotter | time.sleep(0.05)
|
207 | a95fd5d7 | Guido Trotter | Thread(target=self._doItExclusive).start()
|
208 | a95fd5d7 | Guido Trotter | Thread(target=self._doItDelete).start()
|
209 | a95fd5d7 | Guido Trotter | time.sleep(0.05)
|
210 | a95fd5d7 | Guido Trotter | self.sl.delete()
|
211 | a95fd5d7 | Guido Trotter | # The two threads who were pending return both ERR
|
212 | a95fd5d7 | Guido Trotter | self.assertEqual(self.done.get(True, 1), 'ERR') |
213 | a95fd5d7 | Guido Trotter | self.assertEqual(self.done.get(True, 1), 'ERR') |
214 | a95fd5d7 | Guido Trotter | self.assertEqual(self.done.get(True, 1), 'ERR') |
215 | a95fd5d7 | Guido Trotter | self.assertEqual(self.done.get(True, 1), 'ERR') |
216 | a95fd5d7 | Guido Trotter | |
217 | a95fd5d7 | Guido Trotter | def testDeletePendingDeleteExclusiveSharers(self): |
218 | a95fd5d7 | Guido Trotter | self.sl.acquire()
|
219 | a95fd5d7 | Guido Trotter | Thread(target=self._doItDelete).start()
|
220 | a95fd5d7 | Guido Trotter | Thread(target=self._doItExclusive).start()
|
221 | a95fd5d7 | Guido Trotter | time.sleep(0.05)
|
222 | a95fd5d7 | Guido Trotter | Thread(target=self._doItSharer).start()
|
223 | a95fd5d7 | Guido Trotter | Thread(target=self._doItSharer).start()
|
224 | a95fd5d7 | Guido Trotter | time.sleep(0.05)
|
225 | a95fd5d7 | Guido Trotter | self.sl.delete()
|
226 | a95fd5d7 | Guido Trotter | # The two threads who were pending return both ERR
|
227 | a95fd5d7 | Guido Trotter | self.assertEqual(self.done.get(True, 1), 'ERR') |
228 | a95fd5d7 | Guido Trotter | self.assertEqual(self.done.get(True, 1), 'ERR') |
229 | a95fd5d7 | Guido Trotter | self.assertEqual(self.done.get(True, 1), 'ERR') |
230 | a95fd5d7 | Guido Trotter | self.assertEqual(self.done.get(True, 1), 'ERR') |
231 | a95fd5d7 | Guido Trotter | |
232 | 162c1c1f | Guido Trotter | |
233 | 162c1c1f | Guido Trotter | if __name__ == '__main__': |
234 | 162c1c1f | Guido Trotter | unittest.main() |
235 | 162c1c1f | Guido Trotter | #suite = unittest.TestLoader().loadTestsFromTestCase(TestSharedLock)
|
236 | 162c1c1f | Guido Trotter | #unittest.TextTestRunner(verbosity=2).run(suite) |