def acquire(self, hostId, lease):
if lease != self._lease:
raise MultipleLeasesNotSupported("acquire", lease)
with self._globalLockMapSync:
self.log.info("Acquiring local lock for domain %s (id: %s)", self._sdUUID, hostId)
hostId, lockFile = self._getLease()
if lockFile:
try:
osutils.uninterruptible(fcntl.fcntl, lockFile, fcntl.F_GETFD)
except IOError as e:
# We found a stale file descriptor, removing.
del self._globalLockMap[self._sdUUID]
# Raise any other unkown error.
if e.errno != errno.EBADF:
raise
else:
self.log.debug("Local lock already acquired for domain " "%s (id: %s)", self._sdUUID, hostId)
return # success, the lock was already acquired
lockFile = osutils.uninterruptible(os.open, self._idsPath, os.O_RDONLY)
try:
osutils.uninterruptible(fcntl.flock, lockFile, fcntl.LOCK_EX | fcntl.LOCK_NB)
except IOError as e:
osutils.close_fd(lockFile)
if e.errno in (errno.EACCES, errno.EAGAIN):
raise se.AcquireLockFailure(self._sdUUID, e.errno, "Cannot acquire local lock", str(e))
raise
else:
self._globalLockMap[self._sdUUID] = (hostId, lockFile)
self.log.debug("Local lock for domain %s successfully acquired " "(id: %s)", self._sdUUID, hostId)
def test_close(self):
fds = os.pipe()
for fd in fds:
osutils.close_fd(fd)
time.sleep(0.1)
for fd in fds:
path = "/proc/self/fd/%d" % fd
self.assertFalse(os.path.exists(path))
def test_close(self):
fds = os.pipe()
for fd in fds:
osutils.close_fd(fd)
time.sleep(0.1)
for fd in fds:
path = "/proc/self/fd/%d" % fd
self.assertFalse(os.path.exists(path))
def release(self, lease):
if lease != self._lease:
raise MultipleLeasesNotSupported("release", lease)
with self._globalLockMapSync:
self.log.info("Releasing local lock for domain %s", self._sdUUID)
hostId, lockFile = self._getLease()
if not lockFile:
self.log.debug("Local lock already released for domain %s", self._sdUUID)
return
osutils.close_fd(lockFile)
self._globalLockMap[self._sdUUID] = (hostId, None)
self.log.debug("Local lock for domain %s successfully released", self._sdUUID)
def acquire(self, hostId, lease):
if lease != self._lease:
raise MultipleLeasesNotSupported("acquire", lease)
with self._globalLockMapSync:
self.log.info("Acquiring local lock for domain %s (id: %s)",
self._sdUUID, hostId)
hostId, lockFile = self._getLease()
if lockFile:
try:
osutils.uninterruptible(fcntl.fcntl, lockFile,
fcntl.F_GETFD)
except IOError as e:
# We found a stale file descriptor, removing.
del self._globalLockMap[self._sdUUID]
# Raise any other unkown error.
if e.errno != errno.EBADF:
raise
else:
self.log.debug(
"Local lock already acquired for domain "
"%s (id: %s)", self._sdUUID, hostId)
return # success, the lock was already acquired
lockFile = osutils.uninterruptible(os.open, self._idsPath,
os.O_RDONLY)
try:
osutils.uninterruptible(fcntl.flock, lockFile,
fcntl.LOCK_EX | fcntl.LOCK_NB)
except IOError as e:
osutils.close_fd(lockFile)
if e.errno in (errno.EACCES, errno.EAGAIN):
raise se.AcquireLockFailure(self._sdUUID, e.errno,
"Cannot acquire local lock",
str(e))
raise
else:
self._globalLockMap[self._sdUUID] = (hostId, lockFile)
self.log.debug(
"Local lock for domain %s successfully acquired "
"(id: %s)", self._sdUUID, hostId)
def release(self, lease):
if lease != self._lease:
raise MultipleLeasesNotSupported("release", lease)
with self._globalLockMapSync:
self.log.info("Releasing local lock for domain %s", self._sdUUID)
hostId, lockFile = self._getLease()
if not lockFile:
self.log.debug("Local lock already released for domain %s",
self._sdUUID)
return
osutils.close_fd(lockFile)
self._globalLockMap[self._sdUUID] = (hostId, None)
self.log.debug("Local lock for domain %s successfully released",
self._sdUUID)
def wrapper(*a, **kw):
r, w = os.pipe()
try:
pid = os.fork()
if pid == 0:
try:
f(*a, **kw)
os._exit(0)
except Exception as e:
os.write(w, pickle.dumps(e))
os._exit(1)
else:
_, status = os.waitpid(pid, 0)
if status != 0:
e = pickle.loads(os.read(r, 4006))
raise e
finally:
osutils.close_fd(r)
osutils.close_fd(w)
def wrapper(*a, **kw):
r, w = os.pipe()
try:
pid = os.fork()
if pid == 0:
try:
f(*a, **kw)
os._exit(0)
except Exception as e:
os.write(w, pickle.dumps(e))
os._exit(1)
else:
_, status = osutils.uninterruptible(os.waitpid, pid, 0)
if status != 0:
e = pickle.loads(os.read(r, 4006))
raise e
finally:
osutils.close_fd(r)
osutils.close_fd(w)
def test_propagate_other_errors(self):
with self.assertRaises(OSError) as e:
osutils.close_fd(-1)
self.assertEqual(e.exception.errno, errno.EBADF)
def test_propagate_other_errors(self):
with self.assertRaises(OSError) as e:
osutils.close_fd(-1)
self.assertEqual(e.exception.errno, errno.EBADF)
