root / test / ganeti.locking_unittest.py @ 0cc00929
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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(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.ls.remove(['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.ls.remove(['three']) |
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self.assert_('three' not in self.ls._names()) |
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self.assertEquals(self.ls.remove('three'), ['three']) |
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self.assertEquals(self.ls.remove(['one', 'three', 'six']), ['three', 'six']) |
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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), []) |
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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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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 _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 _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), ['four']) |
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Thread(target=self._doRemoveSet, args=(['two'])).start() |
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self.assertEqual(self.done.get(True, 1), []) |
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self.ls.release()
|
| 413 |
|
| 414 |
|
| 415 |
class TestGanetiLockManager(unittest.TestCase): |
| 416 |
|
| 417 |
def setUp(self): |
| 418 |
self.nodes=['n1', 'n2'] |
| 419 |
self.instances=['i1', 'i2', 'i3'] |
| 420 |
self.GL = locking.GanetiLockManager(nodes=self.nodes, |
| 421 |
instances=self.instances)
|
| 422 |
self.done = Queue.Queue(0) |
| 423 |
|
| 424 |
def tearDown(self): |
| 425 |
# Don't try this at home...
|
| 426 |
locking.GanetiLockManager._instance = None
|
| 427 |
|
| 428 |
def testLockingConstants(self): |
| 429 |
# The locking library internally cheats by assuming its constants have some
|
| 430 |
# relationships with each other. Check those hold true.
|
| 431 |
for i in range(len(locking.LEVELS)): |
| 432 |
self.assertEqual(i, locking.LEVELS[i])
|
| 433 |
|
| 434 |
def testDoubleGLFails(self): |
| 435 |
# We are not passing test=True, so instantiating a new one should fail
|
| 436 |
self.assertRaises(AssertionError, locking.GanetiLockManager) |
| 437 |
|
| 438 |
def testLockNames(self): |
| 439 |
self.assertEqual(self.GL._names(locking.LEVEL_CLUSTER), set(['BGL'])) |
| 440 |
self.assertEqual(self.GL._names(locking.LEVEL_NODE), set(self.nodes)) |
| 441 |
self.assertEqual(self.GL._names(locking.LEVEL_INSTANCE), set(self.instances)) |
| 442 |
self.assertEqual(self.GL._names(locking.LEVEL_CONFIG), set(['config'])) |
| 443 |
|
| 444 |
def testInitAndResources(self): |
| 445 |
locking.GanetiLockManager._instance = None
|
| 446 |
self.GL = locking.GanetiLockManager()
|
| 447 |
self.assertEqual(self.GL._names(locking.LEVEL_CLUSTER), set(['BGL'])) |
| 448 |
self.assertEqual(self.GL._names(locking.LEVEL_NODE), set()) |
| 449 |
self.assertEqual(self.GL._names(locking.LEVEL_INSTANCE), set()) |
| 450 |
self.assertEqual(self.GL._names(locking.LEVEL_CONFIG), set(['config'])) |
| 451 |
|
| 452 |
locking.GanetiLockManager._instance = None
|
| 453 |
self.GL = locking.GanetiLockManager(nodes=self.nodes) |
| 454 |
self.assertEqual(self.GL._names(locking.LEVEL_CLUSTER), set(['BGL'])) |
| 455 |
self.assertEqual(self.GL._names(locking.LEVEL_NODE), set(self.nodes)) |
| 456 |
self.assertEqual(self.GL._names(locking.LEVEL_INSTANCE), set()) |
| 457 |
self.assertEqual(self.GL._names(locking.LEVEL_CONFIG), set(['config'])) |
| 458 |
|
| 459 |
locking.GanetiLockManager._instance = None
|
| 460 |
self.GL = locking.GanetiLockManager(instances=self.instances) |
| 461 |
self.assertEqual(self.GL._names(locking.LEVEL_CLUSTER), set(['BGL'])) |
| 462 |
self.assertEqual(self.GL._names(locking.LEVEL_NODE), set()) |
| 463 |
self.assertEqual(self.GL._names(locking.LEVEL_INSTANCE), set(self.instances)) |
| 464 |
self.assertEqual(self.GL._names(locking.LEVEL_CONFIG), set(['config'])) |
| 465 |
|
| 466 |
def testAcquireRelease(self): |
| 467 |
self.GL.acquire(locking.LEVEL_CLUSTER, ['BGL'], shared=1) |
| 468 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_CLUSTER), set(['BGL'])) |
| 469 |
self.GL.acquire(locking.LEVEL_NODE, ['n1', 'n2'], shared=1) |
| 470 |
self.GL.release(locking.LEVEL_NODE)
|
| 471 |
self.GL.acquire(locking.LEVEL_NODE, ['n1']) |
| 472 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_NODE), set(['n1'])) |
| 473 |
self.GL.acquire(locking.LEVEL_INSTANCE, ['i1', 'i2']) |
| 474 |
self.GL.acquire(locking.LEVEL_CONFIG, ['config']) |
| 475 |
self.GL.release(locking.LEVEL_INSTANCE, ['i2']) |
| 476 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_INSTANCE), set(['i1'])) |
| 477 |
self.GL.release(locking.LEVEL_NODE)
|
| 478 |
self.GL.release(locking.LEVEL_INSTANCE)
|
| 479 |
self.GL.release(locking.LEVEL_CONFIG)
|
| 480 |
self.assertRaises(errors.LockError, self.GL.acquire, |
| 481 |
locking.LEVEL_INSTANCE, ['i5'])
|
| 482 |
self.GL.acquire(locking.LEVEL_INSTANCE, ['i3'], shared=1) |
| 483 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_INSTANCE), set(['i3'])) |
| 484 |
|
| 485 |
def testBGLDependency(self): |
| 486 |
self.assertRaises(AssertionError, self.GL.acquire, |
| 487 |
locking.LEVEL_NODE, ['n1', 'n2']) |
| 488 |
self.assertRaises(AssertionError, self.GL.acquire, |
| 489 |
locking.LEVEL_INSTANCE, ['i3'])
|
| 490 |
self.GL.acquire(locking.LEVEL_CLUSTER, ['BGL'], shared=1) |
| 491 |
self.GL.acquire(locking.LEVEL_NODE, ['n1']) |
| 492 |
self.assertRaises(AssertionError, self.GL.release, |
| 493 |
locking.LEVEL_CLUSTER, ['BGL'])
|
| 494 |
self.assertRaises(AssertionError, self.GL.release, |
| 495 |
locking.LEVEL_CLUSTER) |
| 496 |
self.GL.release(locking.LEVEL_NODE)
|
| 497 |
self.GL.acquire(locking.LEVEL_INSTANCE, ['i1', 'i2']) |
| 498 |
self.assertRaises(AssertionError, self.GL.release, |
| 499 |
locking.LEVEL_CLUSTER, ['BGL'])
|
| 500 |
self.assertRaises(AssertionError, self.GL.release, |
| 501 |
locking.LEVEL_CLUSTER) |
| 502 |
self.GL.release(locking.LEVEL_INSTANCE)
|
| 503 |
self.GL.acquire(locking.LEVEL_CONFIG, ['config']) |
| 504 |
self.assertRaises(AssertionError, self.GL.release, |
| 505 |
locking.LEVEL_CLUSTER) |
| 506 |
|
| 507 |
def testWrongOrder(self): |
| 508 |
self.GL.acquire(locking.LEVEL_CLUSTER, ['BGL'], shared=1) |
| 509 |
self.GL.acquire(locking.LEVEL_INSTANCE, ['i3']) |
| 510 |
self.assertRaises(AssertionError, self.GL.acquire, |
| 511 |
locking.LEVEL_NODE, ['n1'])
|
| 512 |
self.assertRaises(AssertionError, self.GL.acquire, |
| 513 |
locking.LEVEL_INSTANCE, ['i2'])
|
| 514 |
self.GL.acquire(locking.LEVEL_CONFIG, ['config']) |
| 515 |
self.assertRaises(AssertionError, self.GL.acquire, |
| 516 |
locking.LEVEL_CONFIG, ['config'])
|
| 517 |
self.GL.release(locking.LEVEL_INSTANCE)
|
| 518 |
self.assertRaises(AssertionError, self.GL.acquire, |
| 519 |
locking.LEVEL_NODE, ['n1'])
|
| 520 |
self.assertRaises(AssertionError, self.GL.acquire, |
| 521 |
locking.LEVEL_INSTANCE, ['i2'])
|
| 522 |
self.assertRaises(AssertionError, self.GL.acquire, |
| 523 |
locking.LEVEL_CONFIG, ['config'])
|
| 524 |
|
| 525 |
# Helper function to run as a thread that shared the BGL and then acquires
|
| 526 |
# some locks at another level.
|
| 527 |
def _doLock(self, level, names, shared): |
| 528 |
try:
|
| 529 |
self.GL.acquire(locking.LEVEL_CLUSTER, ['BGL'], shared=1) |
| 530 |
self.GL.acquire(level, names, shared=shared)
|
| 531 |
self.done.put('DONE') |
| 532 |
self.GL.release(level)
|
| 533 |
self.GL.release(locking.LEVEL_CLUSTER)
|
| 534 |
except errors.LockError:
|
| 535 |
self.done.put('ERR') |
| 536 |
|
| 537 |
def testConcurrency(self): |
| 538 |
self.GL.acquire(locking.LEVEL_CLUSTER, ['BGL'], shared=1) |
| 539 |
Thread(target=self._doLock, args=(locking.LEVEL_INSTANCE, 'i1', 1)).start() |
| 540 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
| 541 |
self.GL.acquire(locking.LEVEL_NODE, ['n1']) |
| 542 |
self.GL.acquire(locking.LEVEL_INSTANCE, ['i3']) |
| 543 |
self.GL.acquire(locking.LEVEL_CONFIG, ['config']) |
| 544 |
Thread(target=self._doLock, args=(locking.LEVEL_INSTANCE, 'i1', 1)).start() |
| 545 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
| 546 |
Thread(target=self._doLock, args=(locking.LEVEL_INSTANCE, 'i3', 1)).start() |
| 547 |
self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
| 548 |
self.GL.release(locking.LEVEL_CONFIG)
|
| 549 |
self.GL.release(locking.LEVEL_INSTANCE)
|
| 550 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
| 551 |
self.GL.acquire(locking.LEVEL_INSTANCE, ['i2'], shared=1) |
| 552 |
Thread(target=self._doLock, args=(locking.LEVEL_INSTANCE, 'i2', 1)).start() |
| 553 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
| 554 |
Thread(target=self._doLock, args=(locking.LEVEL_INSTANCE, 'i2', 0)).start() |
| 555 |
self.assertRaises(Queue.Empty, self.done.get, True, 0.2) |
| 556 |
self.GL.release(locking.LEVEL_INSTANCE)
|
| 557 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
| 558 |
|
| 559 |
|
| 560 |
if __name__ == '__main__': |
| 561 |
unittest.main() |
| 562 |
#suite = unittest.TestLoader().loadTestsFromTestCase(TestSharedLock)
|
| 563 |
#unittest.TextTestRunner(verbosity=2).run(suite)
|