async def test_consume_events(transactional_bus: BusPath,
aiopg_connection_factory, dummy_api):
events = []
def listener(event_message, *, field):
events.append(event_message)
connection1 = await aiopg_connection_factory()
async with lightbus_set_database(transactional_bus,
connection1,
apis=["my.dummy"]):
listener_co = await transactional_bus.my.dummy.my_event.listen_async(
listener)
task = asyncio.ensure_future(listener_co)
await asyncio.sleep(0.2)
connection2 = await aiopg_connection_factory()
print("connection 1", connection1)
print("connection 2", connection2)
async with lightbus_set_database(transactional_bus,
connection2,
apis=["my.dummy"]):
await transactional_bus.my.dummy.my_event.fire_async(field=1)
await asyncio.sleep(0.2)
await cancel(task)
assert len(events) == 1
def test_init_multiple_transports(dummy_bus: BusPath, aiopg_connection):
registry = dummy_bus.client.transport_registry
registry.set_event_transport(
"another_api", TransactionalEventTransport(DebugEventTransport()))
with pytest.raises(ApisMustUseSameTransport):
lightbus_set_database(dummy_bus,
aiopg_connection,
apis=["some_api", "another_api"])
def atomic_context(dummy_bus: BusPath, aiopg_connection):
registry = dummy_bus.client.transport_registry
current_event_transport = registry.get_event_transport("default")
registry.set_event_transport(
"default", TransactionalEventTransport(child_transport=current_event_transport)
)
return lightbus_set_database(dummy_bus, aiopg_connection, apis=["some_api", "some_api2"])
def __call__(self, request):
connection = connections["default"]
if connection.in_atomic_block:
start_transaction = False
elif connection.autocommit:
start_transaction = True
else:
start_transaction = None
lightbus_transaction_context = lightbus_set_database(
self.bus, connection)
block(lightbus_transaction_context.__aenter__(), self.loop, timeout=5)
response = self.get_response(request)
if 500 <= response.status_code < 600:
block(lightbus_transaction_context.__aexit__(True, True, True),
self.loop,
timeout=5)
else:
block(lightbus_transaction_context.__aexit__(None, None, None),
self.loop,
timeout=5)
return response
async def start_firing(number):
async with aiopg.connect(loop=loop, **pg_kwargs) as connection:
async with connection.cursor(
cursor_factory=cursor_factory) as cursor:
bus = await transactional_bus_factory()
for x in range(0, 50):
async with lightbus_set_database(bus,
connection,
apis=["my.dummy"]):
await bus.my.dummy.my_event.fire_async(field=1)
await cursor.execute(
"INSERT INTO test_table VALUES (%s)",
[f"{number}-{x}"])
async def test_fire_events_all_ok(
transactional_bus,
aiopg_connection,
test_table,
dummy_api,
aiopg_cursor,
messages_in_redis,
get_outbox,
):
async with lightbus_set_database(transactional_bus,
aiopg_connection,
apis=["foo", "bar"]):
await transactional_bus.my.dummy.my_event.fire_async(field=1)
await aiopg_cursor.execute("INSERT INTO test_table VALUES ('hey')")
assert await test_table.total_rows() == 1 # Test table has data
assert len(await
get_outbox()) == 0 # Sent messages are removed from outbox
assert len(await messages_in_redis("my.dummy",
"my_event")) == 1 # Message in redis
async def test_fire_events_exception(
transactional_bus,
aiopg_connection,
test_table,
dummy_api,
aiopg_cursor,
messages_in_redis,
get_outbox,
):
class OhNo(Exception):
pass
with pytest.raises(OhNo):
async with lightbus_set_database(transactional_bus,
aiopg_connection,
apis=["foo", "bar"]):
await transactional_bus.my.dummy.my_event.fire_async(field=1)
await aiopg_cursor.execute("INSERT INTO test_table VALUES ('hey')")
raise OhNo()
assert await test_table.total_rows() == 0 # No data in tests table
assert len(await get_outbox()) == 0 # No messages sat in outbox
assert len(await messages_in_redis("my.dummy",
"my_event")) == 0 # Nothing in redis
def test_init_bad_transport(dummy_bus: BusPath, aiopg_connection):
with pytest.raises(ApisMustUseTransactionalTransport):
lightbus_set_database(dummy_bus, aiopg_connection, apis=["some_api"])
def test_init_no_apis(dummy_bus: BusPath, aiopg_connection):
with pytest.raises(NoApisSpecified):
lightbus_set_database(dummy_bus, aiopg_connection, apis=[])