def test_stale_lock_with_fail(self):
l1 = CassandraDistributedRowLock(
self.pool, TEST_CF, "test_stale_lock",
ttl=TEST_TTL, consistency_level=ConsistencyLevel.ONE,
timeout=1.0
)
l2 = CassandraDistributedRowLock(
self.pool, TEST_CF, "test_stale_lock",
ttl=TEST_TTL, consistency_level=ConsistencyLevel.ONE,
timeout=9.0, fail_on_stale_lock=True
)
try:
l1.acquire()
time.sleep(2)
try:
l2.acquire()
assert False, "derp"
except StaleLockException:
print 'things are working smoothly'
except:
raise
finally:
l2.release()
except:
raise
finally:
l2.release()
def test_ttl(self):
l = CassandraDistributedRowLock(
self.pool, TEST_CF, "test_ttl",
ttl=2.0,
consistency_level=ConsistencyLevel.ONE,
timeout=1.0
)
try:
l.acquire()
self.assertEqual(1, len(l.read_lock_columns()))
time.sleep(3)
self.assertEqual(0, len(l.read_lock_columns()))
except:
raise
finally:
l.release()
self.assertEqual(0, len(l.read_lock_columns()))
def test_stale_lock(self):
l1 = CassandraDistributedRowLock(
self.pool, TEST_CF, "test_stale_lock",
ttl=TEST_TTL, consistency_level=ConsistencyLevel.ONE,
timeout=1.0
)
l2 = CassandraDistributedRowLock(
self.pool, TEST_CF, "test_stale_lock",
ttl=TEST_TTL, consistency_level=ConsistencyLevel.ONE,
timeout=9.0
)
try:
l1.acquire()
time.sleep(5)
try:
l2.acquire()
except:
raise
finally:
l2.release()
except:
raise
finally:
l1.release()