root / test / ganeti.locking_unittest.py @ b5c0e9d9
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#!/usr/bin/python
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#
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# Copyright (C) 2006, 2007 Google Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 0.0510-1301, USA.
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"""Script for unittesting the locking module"""
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import os |
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import unittest |
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import time |
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import Queue |
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from ganeti import locking |
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from ganeti import errors |
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from threading import Thread |
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class TestSharedLock(unittest.TestCase): |
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"""SharedLock tests"""
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def setUp(self): |
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self.sl = locking.SharedLock()
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# helper threads use the 'done' queue to tell the master they finished.
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self.done = Queue.Queue(0) |
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def testSequenceAndOwnership(self): |
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self.assert_(not self.sl._is_owned()) |
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self.sl.acquire(shared=1) |
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self.assert_(self.sl._is_owned()) |
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self.assert_(self.sl._is_owned(shared=1)) |
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self.assert_(not self.sl._is_owned(shared=0)) |
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self.sl.release()
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self.assert_(not self.sl._is_owned()) |
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self.sl.acquire()
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self.assert_(self.sl._is_owned()) |
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self.assert_(not self.sl._is_owned(shared=1)) |
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self.assert_(self.sl._is_owned(shared=0)) |
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self.sl.release()
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self.assert_(not self.sl._is_owned()) |
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self.sl.acquire(shared=1) |
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self.assert_(self.sl._is_owned()) |
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self.assert_(self.sl._is_owned(shared=1)) |
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self.assert_(not self.sl._is_owned(shared=0)) |
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self.sl.release()
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self.assert_(not self.sl._is_owned()) |
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def testBooleanValue(self): |
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# semaphores are supposed to return a true value on a successful acquire
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self.assert_(self.sl.acquire(shared=1)) |
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self.sl.release()
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self.assert_(self.sl.acquire()) |
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self.sl.release()
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def testDoubleLockingStoE(self): |
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self.sl.acquire(shared=1) |
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self.assertRaises(AssertionError, self.sl.acquire) |
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def testDoubleLockingEtoS(self): |
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self.sl.acquire()
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self.assertRaises(AssertionError, self.sl.acquire, shared=1) |
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def testDoubleLockingStoS(self): |
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self.sl.acquire(shared=1) |
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self.assertRaises(AssertionError, self.sl.acquire, shared=1) |
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def testDoubleLockingEtoE(self): |
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self.sl.acquire()
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self.assertRaises(AssertionError, self.sl.acquire) |
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# helper functions: called in a separate thread they acquire the lock, send
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# their identifier on the done queue, then release it.
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def _doItSharer(self): |
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try:
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self.sl.acquire(shared=1) |
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self.done.put('SHR') |
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self.sl.release()
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except errors.LockError:
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self.done.put('ERR') |
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def _doItExclusive(self): |
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try:
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self.sl.acquire()
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self.done.put('EXC') |
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self.sl.release()
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except errors.LockError:
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self.done.put('ERR') |
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def _doItDelete(self): |
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try:
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self.sl.delete()
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self.done.put('DEL') |
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except errors.LockError:
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self.done.put('ERR') |
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def testSharersCanCoexist(self): |
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self.sl.acquire(shared=1) |
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Thread(target=self._doItSharer).start()
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self.assert_(self.done.get(True, 1)) |
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self.sl.release()
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def testExclusiveBlocksExclusive(self): |
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self.sl.acquire()
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Thread(target=self._doItExclusive).start()
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# give it a bit of time to check that it's not actually doing anything
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self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
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self.sl.release()
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self.assert_(self.done.get(True, 1)) |
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def testExclusiveBlocksDelete(self): |
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self.sl.acquire()
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Thread(target=self._doItDelete).start()
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# give it a bit of time to check that it's not actually doing anything
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self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
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self.sl.release()
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self.assert_(self.done.get(True, 1)) |
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def testExclusiveBlocksSharer(self): |
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self.sl.acquire()
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Thread(target=self._doItSharer).start()
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time.sleep(0.05)
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self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
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self.sl.release()
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self.assert_(self.done.get(True, 1)) |
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def testSharerBlocksExclusive(self): |
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self.sl.acquire(shared=1) |
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Thread(target=self._doItExclusive).start()
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time.sleep(0.05)
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self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
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self.sl.release()
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self.assert_(self.done.get(True, 1)) |
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def testSharerBlocksDelete(self): |
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self.sl.acquire(shared=1) |
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Thread(target=self._doItDelete).start()
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time.sleep(0.05)
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self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
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self.sl.release()
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self.assert_(self.done.get(True, 1)) |
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def testWaitingExclusiveBlocksSharer(self): |
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self.sl.acquire(shared=1) |
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# the lock is acquired in shared mode...
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Thread(target=self._doItExclusive).start()
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# ...but now an exclusive is waiting...
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time.sleep(0.05)
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Thread(target=self._doItSharer).start()
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# ...so the sharer should be blocked as well
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self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
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self.sl.release()
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# The exclusive passed before
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self.assertEqual(self.done.get(True, 1), 'EXC') |
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self.assertEqual(self.done.get(True, 1), 'SHR') |
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def testWaitingSharerBlocksExclusive(self): |
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self.sl.acquire()
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# the lock is acquired in exclusive mode...
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Thread(target=self._doItSharer).start()
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# ...but now a sharer is waiting...
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time.sleep(0.05)
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Thread(target=self._doItExclusive).start()
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# ...the exclusive is waiting too...
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self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
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self.sl.release()
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# The sharer passed before
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self.assertEqual(self.done.get(True, 1), 'SHR') |
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self.assertEqual(self.done.get(True, 1), 'EXC') |
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def testNoNonBlocking(self): |
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self.assertRaises(NotImplementedError, self.sl.acquire, blocking=0) |
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self.assertRaises(NotImplementedError, self.sl.delete, blocking=0) |
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self.sl.acquire()
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self.sl.delete(blocking=0) # Fine, because the lock is already acquired |
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def testDelete(self): |
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self.sl.delete()
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self.assertRaises(errors.LockError, self.sl.acquire) |
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self.assertRaises(errors.LockError, self.sl.acquire, shared=1) |
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self.assertRaises(errors.LockError, self.sl.delete) |
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def testNoDeleteIfSharer(self): |
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self.sl.acquire(shared=1) |
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self.assertRaises(AssertionError, self.sl.delete) |
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def testDeletePendingSharersExclusiveDelete(self): |
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self.sl.acquire()
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Thread(target=self._doItSharer).start()
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Thread(target=self._doItSharer).start()
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time.sleep(0.05)
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Thread(target=self._doItExclusive).start()
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Thread(target=self._doItDelete).start()
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time.sleep(0.05)
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self.sl.delete()
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# The two threads who were pending return both ERR
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self.assertEqual(self.done.get(True, 1), 'ERR') |
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self.assertEqual(self.done.get(True, 1), 'ERR') |
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self.assertEqual(self.done.get(True, 1), 'ERR') |
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self.assertEqual(self.done.get(True, 1), 'ERR') |
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def testDeletePendingDeleteExclusiveSharers(self): |
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self.sl.acquire()
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Thread(target=self._doItDelete).start()
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Thread(target=self._doItExclusive).start()
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time.sleep(0.05)
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Thread(target=self._doItSharer).start()
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Thread(target=self._doItSharer).start()
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time.sleep(0.05)
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self.sl.delete()
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# The two threads who were pending return both ERR
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self.assertEqual(self.done.get(True, 1), 'ERR') |
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self.assertEqual(self.done.get(True, 1), 'ERR') |
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self.assertEqual(self.done.get(True, 1), 'ERR') |
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self.assertEqual(self.done.get(True, 1), 'ERR') |
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class TestLockSet(unittest.TestCase): |
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"""LockSet tests"""
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def setUp(self): |
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self.resources = ['one', 'two', 'three'] |
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self.ls = locking.LockSet(members=self.resources) |
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# helper threads use the 'done' queue to tell the master they finished.
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self.done = Queue.Queue(0) |
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def testResources(self): |
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self.assertEquals(self.ls._names(), set(self.resources)) |
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newls = locking.LockSet() |
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self.assertEquals(newls._names(), set()) |
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def testAcquireRelease(self): |
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self.assert_(self.ls.acquire('one')) |
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self.assertEquals(self.ls._list_owned(), set(['one'])) |
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self.ls.release()
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self.assertEquals(self.ls._list_owned(), set()) |
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self.assertEquals(self.ls.acquire(['one']), set(['one'])) |
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self.assertEquals(self.ls._list_owned(), set(['one'])) |
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self.ls.release()
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self.assertEquals(self.ls._list_owned(), set()) |
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self.ls.acquire(['one', 'two', 'three']) |
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self.assertEquals(self.ls._list_owned(), set(['one', 'two', 'three'])) |
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self.ls.release('one') |
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self.assertEquals(self.ls._list_owned(), set(['two', 'three'])) |
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self.ls.release(['three']) |
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self.assertEquals(self.ls._list_owned(), set(['two'])) |
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self.ls.release()
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self.assertEquals(self.ls._list_owned(), set()) |
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self.assertEquals(self.ls.acquire(['one', 'three']), set(['one', 'three'])) |
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self.assertEquals(self.ls._list_owned(), set(['one', 'three'])) |
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self.ls.release()
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self.assertEquals(self.ls._list_owned(), set()) |
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def testNoDoubleAcquire(self): |
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self.ls.acquire('one') |
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self.assertRaises(AssertionError, self.ls.acquire, 'one') |
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self.assertRaises(AssertionError, self.ls.acquire, ['two']) |
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self.assertRaises(AssertionError, self.ls.acquire, ['two', 'three']) |
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self.ls.release()
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self.ls.acquire(['one', 'three']) |
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self.ls.release('one') |
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self.assertRaises(AssertionError, self.ls.acquire, ['two']) |
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self.ls.release('three') |
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def testNoWrongRelease(self): |
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self.assertRaises(AssertionError, self.ls.release) |
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self.ls.acquire('one') |
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self.assertRaises(AssertionError, self.ls.release, 'two') |
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def testAddRemove(self): |
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self.ls.add('four') |
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self.assertEquals(self.ls._list_owned(), set()) |
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self.assert_('four' in self.ls._names()) |
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self.ls.add(['five', 'six', 'seven'], acquired=1) |
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self.assert_('five' in self.ls._names()) |
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self.assert_('six' in self.ls._names()) |
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self.assert_('seven' in self.ls._names()) |
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self.assertEquals(self.ls._list_owned(), set(['five', 'six', 'seven'])) |
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self.assertEquals(self.ls.remove(['five', 'six']), ['five', 'six']) |
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self.assert_('five' not in self.ls._names()) |
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self.assert_('six' not in self.ls._names()) |
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self.assertEquals(self.ls._list_owned(), set(['seven'])) |
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self.ls.add('eight', acquired=1, shared=1) |
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self.assert_('eight' in self.ls._names()) |
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self.assertEquals(self.ls._list_owned(), set(['seven', 'eight'])) |
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self.ls.remove('seven') |
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self.assert_('seven' not in self.ls._names()) |
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self.assertEquals(self.ls._list_owned(), set(['eight'])) |
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self.ls.release()
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self.ls.remove(['two']) |
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self.assert_('two' not in self.ls._names()) |
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self.ls.acquire('three') |
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self.assertEquals(self.ls.remove(['three']), ['three']) |
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self.assert_('three' not in self.ls._names()) |
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self.assertEquals(self.ls.remove('three'), []) |
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self.assertEquals(self.ls.remove(['one', 'three', 'six']), ['one']) |
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self.assert_('one' not in self.ls._names()) |
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def testRemoveNonBlocking(self): |
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self.assertRaises(NotImplementedError, self.ls.remove, 'one', blocking=0) |
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self.ls.acquire('one') |
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self.assertEquals(self.ls.remove('one', blocking=0), ['one']) |
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self.ls.acquire(['two', 'three']) |
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self.assertEquals(self.ls.remove(['two', 'three'], blocking=0), |
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['two', 'three']) |
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def testNoDoubleAdd(self): |
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self.assertRaises(errors.LockError, self.ls.add, 'two') |
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self.ls.add('four') |
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self.assertRaises(errors.LockError, self.ls.add, 'four') |
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def testNoWrongRemoves(self): |
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self.ls.acquire(['one', 'three'], shared=1) |
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# Cannot remove 'two' while holding something which is not a superset
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self.assertRaises(AssertionError, self.ls.remove, 'two') |
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# Cannot remove 'three' as we are sharing it
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self.assertRaises(AssertionError, self.ls.remove, 'three') |
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def testAcquireSetLock(self): |
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# acquire the set-lock exclusively
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self.assertEquals(self.ls.acquire(None), set(['one', 'two', 'three'])) |
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# I can still add/remove elements...
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self.assertEquals(self.ls.remove(['two', 'three']), ['two', 'three']) |
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self.assert_(self.ls.add('six')) |
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self.ls.release()
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# share the set-lock
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self.assertEquals(self.ls.acquire(None, shared=1), set(['one', 'six'])) |
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# adding new elements is not possible
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self.assertRaises(AssertionError, self.ls.add, 'five') |
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self.ls.release()
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def _doLockSet(self, set, shared): |
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try:
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self.ls.acquire(set, shared=shared) |
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self.done.put('DONE') |
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self.ls.release()
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except errors.LockError:
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self.done.put('ERR') |
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def _doAddSet(self, set): |
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try:
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self.ls.add(set, acquired=1) |
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self.done.put('DONE') |
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self.ls.release()
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except errors.LockError:
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self.done.put('ERR') |
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def _doRemoveSet(self, set): |
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self.done.put(self.ls.remove(set)) |
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def testConcurrentSharedAcquire(self): |
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self.ls.acquire(['one', 'two'], shared=1) |
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Thread(target=self._doLockSet, args=(['one', 'two'], 1)).start() |
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self.assertEqual(self.done.get(True, 1), 'DONE') |
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Thread(target=self._doLockSet, args=(['one', 'two', 'three'], 1)).start() |
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self.assertEqual(self.done.get(True, 1), 'DONE') |
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Thread(target=self._doLockSet, args=('three', 1)).start() |
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self.assertEqual(self.done.get(True, 1), 'DONE') |
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Thread(target=self._doLockSet, args=(['one', 'two'], 0)).start() |
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Thread(target=self._doLockSet, args=(['two', 'three'], 0)).start() |
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self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
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self.ls.release()
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self.assertEqual(self.done.get(True, 1), 'DONE') |
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self.assertEqual(self.done.get(True, 1), 'DONE') |
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def testConcurrentExclusiveAcquire(self): |
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self.ls.acquire(['one', 'two']) |
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Thread(target=self._doLockSet, args=('three', 1)).start() |
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self.assertEqual(self.done.get(True, 1), 'DONE') |
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Thread(target=self._doLockSet, args=('three', 0)).start() |
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self.assertEqual(self.done.get(True, 1), 'DONE') |
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Thread(target=self._doLockSet, args=(['one', 'two'], 0)).start() |
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Thread(target=self._doLockSet, args=(['one', 'two'], 1)).start() |
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Thread(target=self._doLockSet, args=('one', 0)).start() |
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Thread(target=self._doLockSet, args=('one', 1)).start() |
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Thread(target=self._doLockSet, args=(['two', 'three'], 0)).start() |
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Thread(target=self._doLockSet, args=(['two', 'three'], 1)).start() |
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self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
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self.ls.release()
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self.assertEqual(self.done.get(True, 1), 'DONE') |
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self.assertEqual(self.done.get(True, 1), 'DONE') |
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self.assertEqual(self.done.get(True, 1), 'DONE') |
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self.assertEqual(self.done.get(True, 1), 'DONE') |
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self.assertEqual(self.done.get(True, 1), 'DONE') |
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self.assertEqual(self.done.get(True, 1), 'DONE') |
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def testConcurrentRemove(self): |
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self.ls.add('four') |
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self.ls.acquire(['one', 'two', 'four']) |
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Thread(target=self._doLockSet, args=(['one', 'four'], 0)).start() |
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Thread(target=self._doLockSet, args=(['one', 'four'], 1)).start() |
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Thread(target=self._doLockSet, args=(['one', 'two'], 0)).start() |
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Thread(target=self._doLockSet, args=(['one', 'two'], 1)).start() |
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self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
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self.ls.remove('one') |
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self.ls.release()
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self.assertEqual(self.done.get(True, 1), 'ERR') |
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self.assertEqual(self.done.get(True, 1), 'ERR') |
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self.assertEqual(self.done.get(True, 1), 'ERR') |
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self.assertEqual(self.done.get(True, 1), 'ERR') |
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self.ls.add(['five', 'six'], acquired=1) |
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Thread(target=self._doLockSet, args=(['three', 'six'], 1)).start() |
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Thread(target=self._doLockSet, args=(['three', 'six'], 0)).start() |
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Thread(target=self._doLockSet, args=(['four', 'six'], 1)).start() |
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Thread(target=self._doLockSet, args=(['four', 'six'], 0)).start() |
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self.ls.remove('five') |
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self.ls.release()
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self.assertEqual(self.done.get(True, 1), 'DONE') |
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self.assertEqual(self.done.get(True, 1), 'DONE') |
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self.assertEqual(self.done.get(True, 1), 'DONE') |
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self.assertEqual(self.done.get(True, 1), 'DONE') |
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self.ls.acquire(['three', 'four']) |
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Thread(target=self._doRemoveSet, args=(['four', 'six'], )).start() |
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self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
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self.ls.remove('four') |
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self.assertEqual(self.done.get(True, 1), ['six']) |
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Thread(target=self._doRemoveSet, args=(['two'])).start() |
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self.assertEqual(self.done.get(True, 1), ['two']) |
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self.ls.release()
|
435 |
|
436 |
def testConcurrentSharedSetLock(self): |
437 |
# share the set-lock...
|
438 |
self.ls.acquire(None, shared=1) |
439 |
# ...another thread can share it too
|
440 |
Thread(target=self._doLockSet, args=(None, 1)).start() |
441 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
442 |
# ...or just share some elements
|
443 |
Thread(target=self._doLockSet, args=(['one', 'three'], 1)).start() |
444 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
445 |
# ...but not add new ones or remove any
|
446 |
Thread(target=self._doAddSet, args=(['nine'])).start() |
447 |
Thread(target=self._doRemoveSet, args=(['two'], )).start() |
448 |
self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
449 |
# this just releases the set-lock
|
450 |
self.ls.release([])
|
451 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
452 |
# release the lock on the actual elements so remove() can proceed too
|
453 |
self.ls.release()
|
454 |
self.assertEqual(self.done.get(True, 1), ['two']) |
455 |
|
456 |
def testConcurrentExclusiveSetLock(self): |
457 |
# acquire the set-lock...
|
458 |
self.ls.acquire(None, shared=0) |
459 |
# ...no one can do anything else
|
460 |
Thread(target=self._doLockSet, args=(None, 1)).start() |
461 |
Thread(target=self._doLockSet, args=(None, 0)).start() |
462 |
Thread(target=self._doLockSet, args=(['three'], 0)).start() |
463 |
Thread(target=self._doLockSet, args=(['two'], 1)).start() |
464 |
Thread(target=self._doAddSet, args=(['nine'])).start() |
465 |
self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
466 |
self.ls.release()
|
467 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
468 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
469 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
470 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
471 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
472 |
|
473 |
|
474 |
class TestGanetiLockManager(unittest.TestCase): |
475 |
|
476 |
def setUp(self): |
477 |
self.nodes=['n1', 'n2'] |
478 |
self.instances=['i1', 'i2', 'i3'] |
479 |
self.GL = locking.GanetiLockManager(nodes=self.nodes, |
480 |
instances=self.instances)
|
481 |
self.done = Queue.Queue(0) |
482 |
|
483 |
def tearDown(self): |
484 |
# Don't try this at home...
|
485 |
locking.GanetiLockManager._instance = None
|
486 |
|
487 |
def testLockingConstants(self): |
488 |
# The locking library internally cheats by assuming its constants have some
|
489 |
# relationships with each other. Check those hold true.
|
490 |
for i in range(len(locking.LEVELS)): |
491 |
self.assertEqual(i, locking.LEVELS[i])
|
492 |
|
493 |
def testDoubleGLFails(self): |
494 |
# We are not passing test=True, so instantiating a new one should fail
|
495 |
self.assertRaises(AssertionError, locking.GanetiLockManager) |
496 |
|
497 |
def testLockNames(self): |
498 |
self.assertEqual(self.GL._names(locking.LEVEL_CLUSTER), set(['BGL'])) |
499 |
self.assertEqual(self.GL._names(locking.LEVEL_NODE), set(self.nodes)) |
500 |
self.assertEqual(self.GL._names(locking.LEVEL_INSTANCE), |
501 |
set(self.instances)) |
502 |
self.assertEqual(self.GL._names(locking.LEVEL_CONFIG), set(['config'])) |
503 |
|
504 |
def testInitAndResources(self): |
505 |
locking.GanetiLockManager._instance = None
|
506 |
self.GL = locking.GanetiLockManager()
|
507 |
self.assertEqual(self.GL._names(locking.LEVEL_CLUSTER), set(['BGL'])) |
508 |
self.assertEqual(self.GL._names(locking.LEVEL_NODE), set()) |
509 |
self.assertEqual(self.GL._names(locking.LEVEL_INSTANCE), set()) |
510 |
self.assertEqual(self.GL._names(locking.LEVEL_CONFIG), set(['config'])) |
511 |
|
512 |
locking.GanetiLockManager._instance = None
|
513 |
self.GL = locking.GanetiLockManager(nodes=self.nodes) |
514 |
self.assertEqual(self.GL._names(locking.LEVEL_CLUSTER), set(['BGL'])) |
515 |
self.assertEqual(self.GL._names(locking.LEVEL_NODE), set(self.nodes)) |
516 |
self.assertEqual(self.GL._names(locking.LEVEL_INSTANCE), set()) |
517 |
self.assertEqual(self.GL._names(locking.LEVEL_CONFIG), set(['config'])) |
518 |
|
519 |
locking.GanetiLockManager._instance = None
|
520 |
self.GL = locking.GanetiLockManager(instances=self.instances) |
521 |
self.assertEqual(self.GL._names(locking.LEVEL_CLUSTER), set(['BGL'])) |
522 |
self.assertEqual(self.GL._names(locking.LEVEL_NODE), set()) |
523 |
self.assertEqual(self.GL._names(locking.LEVEL_INSTANCE), |
524 |
set(self.instances)) |
525 |
self.assertEqual(self.GL._names(locking.LEVEL_CONFIG), set(['config'])) |
526 |
|
527 |
def testAcquireRelease(self): |
528 |
self.GL.acquire(locking.LEVEL_CLUSTER, ['BGL'], shared=1) |
529 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_CLUSTER), set(['BGL'])) |
530 |
self.GL.acquire(locking.LEVEL_NODE, ['n1', 'n2'], shared=1) |
531 |
self.GL.release(locking.LEVEL_NODE)
|
532 |
self.GL.acquire(locking.LEVEL_NODE, ['n1']) |
533 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_NODE), set(['n1'])) |
534 |
self.GL.acquire(locking.LEVEL_INSTANCE, ['i1', 'i2']) |
535 |
self.GL.acquire(locking.LEVEL_CONFIG, ['config']) |
536 |
self.GL.release(locking.LEVEL_INSTANCE, ['i2']) |
537 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_INSTANCE), set(['i1'])) |
538 |
self.GL.release(locking.LEVEL_NODE)
|
539 |
self.GL.release(locking.LEVEL_INSTANCE)
|
540 |
self.GL.release(locking.LEVEL_CONFIG)
|
541 |
self.assertRaises(errors.LockError, self.GL.acquire, |
542 |
locking.LEVEL_INSTANCE, ['i5'])
|
543 |
self.GL.acquire(locking.LEVEL_INSTANCE, ['i3'], shared=1) |
544 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_INSTANCE), set(['i3'])) |
545 |
|
546 |
def testBGLDependency(self): |
547 |
self.assertRaises(AssertionError, self.GL.acquire, |
548 |
locking.LEVEL_NODE, ['n1', 'n2']) |
549 |
self.assertRaises(AssertionError, self.GL.acquire, |
550 |
locking.LEVEL_INSTANCE, ['i3'])
|
551 |
self.GL.acquire(locking.LEVEL_CLUSTER, ['BGL'], shared=1) |
552 |
self.GL.acquire(locking.LEVEL_NODE, ['n1']) |
553 |
self.assertRaises(AssertionError, self.GL.release, |
554 |
locking.LEVEL_CLUSTER, ['BGL'])
|
555 |
self.assertRaises(AssertionError, self.GL.release, |
556 |
locking.LEVEL_CLUSTER) |
557 |
self.GL.release(locking.LEVEL_NODE)
|
558 |
self.GL.acquire(locking.LEVEL_INSTANCE, ['i1', 'i2']) |
559 |
self.assertRaises(AssertionError, self.GL.release, |
560 |
locking.LEVEL_CLUSTER, ['BGL'])
|
561 |
self.assertRaises(AssertionError, self.GL.release, |
562 |
locking.LEVEL_CLUSTER) |
563 |
self.GL.release(locking.LEVEL_INSTANCE)
|
564 |
self.GL.acquire(locking.LEVEL_CONFIG, ['config']) |
565 |
self.assertRaises(AssertionError, self.GL.release, |
566 |
locking.LEVEL_CLUSTER) |
567 |
|
568 |
def testWrongOrder(self): |
569 |
self.GL.acquire(locking.LEVEL_CLUSTER, ['BGL'], shared=1) |
570 |
self.GL.acquire(locking.LEVEL_INSTANCE, ['i3']) |
571 |
self.assertRaises(AssertionError, self.GL.acquire, |
572 |
locking.LEVEL_NODE, ['n1'])
|
573 |
self.assertRaises(AssertionError, self.GL.acquire, |
574 |
locking.LEVEL_INSTANCE, ['i2'])
|
575 |
self.GL.acquire(locking.LEVEL_CONFIG, ['config']) |
576 |
self.assertRaises(AssertionError, self.GL.acquire, |
577 |
locking.LEVEL_CONFIG, ['config'])
|
578 |
self.GL.release(locking.LEVEL_INSTANCE)
|
579 |
self.assertRaises(AssertionError, self.GL.acquire, |
580 |
locking.LEVEL_NODE, ['n1'])
|
581 |
self.assertRaises(AssertionError, self.GL.acquire, |
582 |
locking.LEVEL_INSTANCE, ['i2'])
|
583 |
self.assertRaises(AssertionError, self.GL.acquire, |
584 |
locking.LEVEL_CONFIG, ['config'])
|
585 |
|
586 |
# Helper function to run as a thread that shared the BGL and then acquires
|
587 |
# some locks at another level.
|
588 |
def _doLock(self, level, names, shared): |
589 |
try:
|
590 |
self.GL.acquire(locking.LEVEL_CLUSTER, ['BGL'], shared=1) |
591 |
self.GL.acquire(level, names, shared=shared)
|
592 |
self.done.put('DONE') |
593 |
self.GL.release(level)
|
594 |
self.GL.release(locking.LEVEL_CLUSTER)
|
595 |
except errors.LockError:
|
596 |
self.done.put('ERR') |
597 |
|
598 |
def testConcurrency(self): |
599 |
self.GL.acquire(locking.LEVEL_CLUSTER, ['BGL'], shared=1) |
600 |
Thread(target=self._doLock, args=(locking.LEVEL_INSTANCE, 'i1', 1)).start() |
601 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
602 |
self.GL.acquire(locking.LEVEL_NODE, ['n1']) |
603 |
self.GL.acquire(locking.LEVEL_INSTANCE, ['i3']) |
604 |
self.GL.acquire(locking.LEVEL_CONFIG, ['config']) |
605 |
Thread(target=self._doLock, args=(locking.LEVEL_INSTANCE, 'i1', 1)).start() |
606 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
607 |
Thread(target=self._doLock, args=(locking.LEVEL_INSTANCE, 'i3', 1)).start() |
608 |
self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
609 |
self.GL.release(locking.LEVEL_CONFIG)
|
610 |
self.GL.release(locking.LEVEL_INSTANCE)
|
611 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
612 |
self.GL.acquire(locking.LEVEL_INSTANCE, ['i2'], shared=1) |
613 |
Thread(target=self._doLock, args=(locking.LEVEL_INSTANCE, 'i2', 1)).start() |
614 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
615 |
Thread(target=self._doLock, args=(locking.LEVEL_INSTANCE, 'i2', 0)).start() |
616 |
self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
617 |
self.GL.release(locking.LEVEL_INSTANCE)
|
618 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
619 |
|
620 |
|
621 |
if __name__ == '__main__': |
622 |
unittest.main() |
623 |
#suite = unittest.TestLoader().loadTestsFromTestCase(TestSharedLock)
|
624 |
#unittest.TextTestRunner(verbosity=2).run(suite)
|