def test_acquire_already_taken_lock_timeout(self):
if not self.is_set_up:
return
name = rand_string()
default_ns = rand_string()
lock_manager = LockManager(self.backend_type, default_ns)
lock1 = lock_manager.acquire(name, ttl=2)
self.assertEquals(lock1.acquired, True)
# This raises LockTimeout because we wait for 1 second only and the lock above has ttl of 2 seconds.
try:
lock_manager.acquire(name, block=1)
except LockTimeout, e:
expected = 'Could not obtain lock for `{}` `{}` within 1s'.format(default_ns, name)
self.assertEquals(e.args[0], expected)
def test_acquire_already_taken_auto_release(self):
if not self.is_set_up:
return
name = rand_string()
default_ns = rand_string()
lock_manager = LockManager(self.backend_type, default_ns)
lock1 = lock_manager.acquire(name, ttl=1)
self.assertEquals(lock1.acquired, True)
# This will not obtain the lock because it's just been taken above ..
lock2 = lock_manager.acquire(name, block=False)
self.assertEquals(lock2.acquired, False)
# .. however, if we wait a moment we will get it because the original will have expired.
sleep(2)
lock3 = lock_manager.acquire(name)
self.assertEquals(lock3.acquired, True)
def test_acquire_already_taken_manual_release(self):
if not self.is_set_up:
return
name = rand_string()
default_ns = rand_string()
lock_manager = LockManager(self.backend_type, default_ns)
lock1 = lock_manager.acquire(name, ttl=10)
self.assertEquals(lock1.acquired, True)
# This will not obtain the lock because it's just been taken above ..
lock2 = lock_manager.acquire(name, block=False)
self.assertEquals(lock2.acquired, False)
# .. however, if we release the lock manually it will become available straightaway.
lock1.release()
lock3 = lock_manager.acquire(name)
self.assertEquals(lock3.acquired, True)