def test_multithread(self):
with ConnectionPool(connector,
DirectConnectionErrorHandler,
max_connection_pool_size=5,
connection_acquisition_timeout=10) as pool:
address = ("127.0.0.1", 7687)
releasing_event = Event()
# We start 10 threads to compete connections from pool with size of 5
threads = []
for i in range(10):
t = Thread(target=acquire_release_conn,
args=(pool, address, releasing_event))
t.start()
threads.append(t)
# The pool size should be 5, all are in-use
self.assert_pool_size(address, 5, 0, pool)
# Now we allow thread to release connections they obtained from pool
releasing_event.set()
# wait for all threads to release connections back to pool
for t in threads:
t.join()
# The pool size is still 5, but all are free
self.assert_pool_size(address, 0, 5, pool)
def test_max_conn_pool_size(self):
with ConnectionPool(connector, DirectConnectionErrorHandler,
max_connection_pool_size=1, connection_acquisition_timeout=0) as pool:
address = ("127.0.0.1", 7687)
pool.acquire_direct(address)
self.assertEqual(pool.in_use_connection_count(address), 1)
with self.assertRaises(ClientError):
pool.acquire_direct(address)
self.assertEqual(pool.in_use_connection_count(address), 1)
def setUp(self):
self.pool = ConnectionPool(connector, DirectConnectionErrorHandler())
class ConnectionPoolTestCase(TestCase):
def setUp(self):
self.pool = ConnectionPool(connector, DirectConnectionErrorHandler())
def tearDown(self):
self.pool.close()
def assert_pool_size(self,
address,
expected_active,
expected_inactive,
pool=None):
if pool is None:
pool = self.pool
try:
connections = pool.connections[address]
except KeyError:
assert 0 == expected_active
assert 0 == expected_inactive
else:
assert len([c for c in connections if c.in_use]) == expected_active
assert len([c for c in connections
if not c.in_use]) == expected_inactive
def test_can_acquire(self):
address = ("127.0.0.1", 7687)
connection = self.pool.acquire_direct(address)
assert connection.address == address
self.assert_pool_size(address, 1, 0)
def test_can_acquire_twice(self):
address = ("127.0.0.1", 7687)
connection_1 = self.pool.acquire_direct(address)
connection_2 = self.pool.acquire_direct(address)
assert connection_1.address == address
assert connection_2.address == address
assert connection_1 is not connection_2
self.assert_pool_size(address, 2, 0)
def test_can_acquire_two_addresses(self):
address_1 = ("127.0.0.1", 7687)
address_2 = ("127.0.0.1", 7474)
connection_1 = self.pool.acquire_direct(address_1)
connection_2 = self.pool.acquire_direct(address_2)
assert connection_1.address == address_1
assert connection_2.address == address_2
self.assert_pool_size(address_1, 1, 0)
self.assert_pool_size(address_2, 1, 0)
def test_can_acquire_and_release(self):
address = ("127.0.0.1", 7687)
connection = self.pool.acquire_direct(address)
self.assert_pool_size(address, 1, 0)
self.pool.release(connection)
self.assert_pool_size(address, 0, 1)
def test_releasing_twice(self):
address = ("127.0.0.1", 7687)
connection = self.pool.acquire_direct(address)
self.pool.release(connection)
self.assert_pool_size(address, 0, 1)
self.pool.release(connection)
self.assert_pool_size(address, 0, 1)
def test_cannot_acquire_after_close(self):
with ConnectionPool(lambda a: QuickConnection(FakeSocket(a)),
DirectConnectionErrorHandler()) as pool:
pool.close()
with self.assertRaises(ServiceUnavailable):
_ = pool.acquire_direct("X")
def test_in_use_count(self):
address = ("127.0.0.1", 7687)
self.assertEqual(self.pool.in_use_connection_count(address), 0)
connection = self.pool.acquire_direct(address)
self.assertEqual(self.pool.in_use_connection_count(address), 1)
self.pool.release(connection)
self.assertEqual(self.pool.in_use_connection_count(address), 0)
def test_max_conn_pool_size(self):
with ConnectionPool(connector,
DirectConnectionErrorHandler,
max_connection_pool_size=1,
connection_acquisition_timeout=0) as pool:
address = ("127.0.0.1", 7687)
pool.acquire_direct(address)
self.assertEqual(pool.in_use_connection_count(address), 1)
with self.assertRaises(ClientError):
pool.acquire_direct(address)
self.assertEqual(pool.in_use_connection_count(address), 1)
def test_multithread(self):
with ConnectionPool(connector,
DirectConnectionErrorHandler,
max_connection_pool_size=5,
connection_acquisition_timeout=10) as pool:
address = ("127.0.0.1", 7687)
releasing_event = Event()
# We start 10 threads to compete connections from pool with size of 5
threads = []
for i in range(10):
t = Thread(target=acquire_release_conn,
args=(pool, address, releasing_event))
t.start()
threads.append(t)
# The pool size should be 5, all are in-use
self.assert_pool_size(address, 5, 0, pool)
# Now we allow thread to release connections they obtained from pool
releasing_event.set()
# wait for all threads to release connections back to pool
for t in threads:
t.join()
# The pool size is still 5, but all are free
self.assert_pool_size(address, 0, 5, pool)
def test_cannot_acquire_after_close(self):
with ConnectionPool(lambda a: QuickConnection(FakeSocket(a)),
DirectConnectionErrorHandler()) as pool:
pool.close()
with self.assertRaises(ServiceUnavailable):
_ = pool.acquire_direct("X")
