async def test_async_comprehension(event_loop):
def embiggen(e):
data = e.json()
data["Height"] *= 10
data["Distance"] *= 10
stream_name = str(uuid.uuid4())
async with connect(
loop=event_loop,
username="******",
password="******",
name="comprehensions",
) as c:
await given_a_stream_with_three_events(c, stream_name)
jumps = (
e.event
async for e in c.iter(stream_name, batch_size=2)
if e.type == "pony_jumped"
)
big_jumps = (embiggen(e) async for e in jumps)
events_read = 0
async for event in big_jumps:
print(event)
events_read += 1
assert events_read == 3
async def aggregate_fn(self):
log.trace("enter Aggregate.aggregate_fn()")
_loop = asyncio.get_event_loop()
async with connect(host=EVENT_STORE_URL,
port=EVENT_STORE_TCP_PORT,
username=EVENT_STORE_USER,
password=EVENT_STORE_PASS,
loop=_loop) as c:
await c.connect()
try:
await self.create_subscription(c)
except exceptions.SubscriptionCreationFailed as e:
if e.message.find("already exists"):
log.info(
f"{self.subscription_name} {self.watched_stream_name} subscription found."
)
else:
log.exception(e)
dialogue_stream = await c.connect_subscription(
self.subscription_name, self.watched_stream_name)
async for event in dialogue_stream.events:
event_obj = json.loads(event.event.data)
log.debug("aggregate_fn() responding to: %s" %
json.dumps(event_obj))
try:
await self.post_to_aggregate_stream(
str(event_obj["event_id"]), await
self.update_backend(event_obj), event.type)
await dialogue_stream.ack(event)
except KeyError as e:
log.error(f"key missing from event: {e}")
except Exception as e:
log.exception(e)
log.trace("exit Aggregate.aggregate_fn()")
async def test_single_event_roundtrip(event_loop):
stream_name = str(uuid.uuid4())
try:
async with connect(loop=event_loop) as c:
print("1")
await c.publish_event(stream_name,
"thing_happened",
body={
"thing": 1,
"happening": True
})
print("1")
result = await c.get_event(stream_name, 0)
print("1")
assert isinstance(result, messages.Event)
assert result.event.type == "thing_happened"
print("1")
data = result.event.json()
assert data["thing"] == 1
assert data["happening"] is True
except Exception as e:
print(e)
assert False
async def __run_writer(self, stream_name, stream_type, data):
async with photonpump.connect(
host=self.config['host'],
port=self.config['port'],
username=self.config['username'],
password=self.config['password']) as conn:
await self.__write_event(conn, stream_name, stream_type, data)
async def __run_reader(self, stream_name):
async with photonpump.connect(
host=self.config['host'],
port=self.config['port'],
username=self.config['username'],
password=self.config['password']) as conn:
return await self.__read_an_event(conn, stream_name)
async def test_three_events_publish(event_loop):
stream_name = str(uuid.uuid4())
async with connect(username="******", password="******") as c:
result = await c.publish(
stream_name,
[
messages.NewEvent(
"pony_jumped",
data={
"Pony": "Derpy Hooves",
"Height": 10,
"Distance": 13
},
),
messages.NewEvent(
"pony_jumped",
data={
"Pony": "Sparkly Hooves",
"Height": 4,
"Distance": 9
},
),
messages.NewEvent(
"pony_jumped",
data={
"Pony": "Unlikely Hooves",
"Height": 73,
"Distance": 912
},
),
],
)
assert result.first_event_number == 0
assert result.last_event_number == 2
async def run(cfg):
async with photonpump.connect(host=cfg['host'],
port=cfg['port'],
username=cfg['username'],
password=cfg['password']) as conn:
logging.info('Connected to EventStore')
actions = []
for stream in cfg['streams']:
try:
subscription = await setup_subscription(
conn, stream['name'], cfg['subscription'])
logging.info("Created subscriptions %s", subscription)
except Exception as exn:
logging.error(
"Failed while connecting to subscriptions: %s \n sleeping before exit",
exn,
exc_info=True)
return
actions.append(events_actor(subscription, stream['events']))
return await asyncio.gather(*actions)
async def responder_fn(_slack_client):
_loop = asyncio.get_event_loop()
async with connect(host=EVENT_STORE_URL,
port=EVENT_STORE_TCP_PORT,
username=EVENT_STORE_USER,
password=EVENT_STORE_PASS,
loop=_loop) as c:
await c.connect()
try:
await create_subscription("slackposter", "aggregate", c)
except exceptions.SubscriptionCreationFailed as e:
if e.message.find("'slackposter' already exists."):
log.info("Slackposter aggregate subscription found.")
else:
raise e
responses_to_send = await c.connect_subscription(
"slackposter", "aggregate")
async for event in responses_to_send.events:
if event.type == "response_created":
event_obj = json.loads(event.event.data)
log.debug("responder_fn() responding to: %s" %
json.dumps(event_obj))
dialogue_object = await fetch_dialogue_object(event.event.data)
try:
await slackclient_call(_slack_client,
dialogue_object["response"],
dialogue_object["event"]["channel"],
dialogue_object["event"]["ts"])
await post_to_dialogue_stream(dialogue_object["event_id"])
await responses_to_send.ack(event)
except Exception as e:
log.exception(e)
else:
await responses_to_send.ack(event)
async def test_iter_from_missing_stream(event_loop):
async with connect(loop=event_loop) as c:
try:
[e async for e in c.iter("my-stream-that-isnt-a-stream")]
assert False
except Exception as e:
assert isinstance(e, exceptions.StreamNotFound)
async def test_missing_stream(event_loop):
stream_name = str(uuid.uuid4())
async with connect(
loop=event_loop, username="******", password="******"
) as c:
with pytest.raises(exceptions.StreamNotFound) as exc:
await c.get_event(stream_name, 0)
assert exc.value.stream == stream_name
async def test_publish_raises_exception_if_not_authenticated(event_loop):
stream_name = str(uuid.uuid4())
async with connect() as conn:
with pytest.raises(exceptions.AccessDenied):
await conn.publish(
stream_name,
[messages.NewEvent("pony_jumped", data={})],
)
async def test_connect_logs_deprecation_warning_when_used_with_loop_parameter(
event_loop, ):
with pytest.warns(DeprecationWarning) as record:
async with connect(loop=event_loop) as conn:
await conn.ping(conversation_id=uuid.uuid4())
assert len(record) == 1
assert "The loop parameter has been deprecated" in record[0].message.args[
0]
async def test_subscribe_to(event_loop):
async with connect(username="******", password="******") as conn:
stream_name = str(uuid.uuid4())
event_id = uuid.uuid4()
await conn.publish_event(stream_name, "my-event-type", id=event_id)
subscription = await conn.subscribe_to(stream_name, start_from=0)
event = await subscription.events.anext()
assert event.received_event.id == event_id
async def test_connect_subscription(event_loop):
async with connect(username="******", password="******", loop=event_loop) as conn:
subscription_name = str(uuid.uuid4())
stream_name = str(uuid.uuid4())
event_id = uuid.uuid4()
await conn.create_subscription(subscription_name, stream_name, start_from=-1)
subscription = await conn.connect_subscription(subscription_name, stream_name)
await conn.publish_event(stream_name, "my-event-type", id=event_id)
event = await subscription.events.anext()
assert event.original_event_id == event_id
async def test_read_with_max_count_and_from_event(event_loop):
stream_name = str(uuid.uuid4())
async with connect(username="******", password="******") as c:
await given_a_stream_with_three_events(c, stream_name)
result = await c.get(stream_name, max_count=1, from_event=2)
assert isinstance(result, list)
assert len(result) == 1
event = result[0]
assert event.type == "pony_jumped"
data = event.json()
assert data["Pony"] == "Unlikely Hooves"
async def test_read_multiple(event_loop):
stream_name = str(uuid.uuid4())
async with connect(username="******", password="******") as c:
await given_a_stream_with_three_events(c, stream_name)
result = await c.get(stream_name)
assert isinstance(result, messages.StreamSlice)
assert len(result) == 3
event = result[1]
assert event.type == "pony_jumped"
data = event.json()
assert data["Pony"] == "Sparkly Hooves"
assert data["Height"] == 4
async def test_single_event_publish(event_loop):
stream_name = str(uuid.uuid4())
async with connect(username="******", password="******") as conn:
result = await conn.publish_event(
stream_name,
"testEvent",
id=uuid.uuid4(),
body={
"greeting": "hello",
"target": "world"
},
)
assert isinstance(result, messages_pb2.WriteEventsCompleted)
assert result.first_event_number == 0
async def test_iterall(event_loop):
async with connect(loop=event_loop,
name="iter_all",
username="******",
password="******") as c:
stream_name = str(uuid.uuid4())
await given_a_stream_with_three_events(c, stream_name)
events_read = 0
async for event in c.iter_all(batch_size=2):
events_read += 1
assert events_read >= 3
async def test_setting_retry_policy(event_loop):
class silly_retry_policy(DiscoveryRetryPolicy):
def __init__(self):
super().__init__()
def should_retry(self, _):
pass
async def wait(self, seed):
pass
expected_policy = silly_retry_policy()
async with connect(retry_policy=expected_policy) as client:
assert client.connector.discovery.retry_policy == expected_policy
async def test_iterall(event_loop):
async with connect(
username="******", # iter_all aggregates all streams so it needs systemwide-read perms
password="******",
name="iter_all",
) as c:
stream_name = str(uuid.uuid4())
await given_two_streams_with_two_events(c, stream_name)
events_read = 0
async for _ in c.iter_all(batch_size=2):
events_read += 1
assert events_read >= 3
async def test_single_event_roundtrip(event_loop):
stream_name = str(uuid.uuid4())
async with connect(username="******", password="******") as c:
await c.publish_event(
stream_name, "thing_happened", body={"thing": 1, "happening": True}
)
result = await c.get_event(stream_name, 0)
assert isinstance(result, messages.Event)
assert result.event.type == "thing_happened"
data = result.event.json()
assert data["thing"] == 1
assert data["happening"] is True
async def test_missing_stream(event_loop):
stream_name = str(uuid.uuid4())
async with connect(loop=event_loop) as c:
exc = None
try:
await c.get_event(stream_name, 0)
except Exception as e:
exc = e
assert isinstance(exc, exceptions.StreamNotFound)
assert exc.stream == stream_name
async def test_readall(event_loop):
async with connect(loop=event_loop,
name="read_all",
username="******",
password="******") as c:
stream_name = str(uuid.uuid4())
await given_a_stream_with_three_events(c, stream_name)
events_read = 0
for event in await c.get_all(max_count=3):
print(event)
events_read += 1
assert events_read == 3
async def test_a_large_event(event_loop):
stream_name = str(uuid.uuid4())
async with connect(username="******", password="******") as c:
write_result = await c.publish(
stream_name,
[
messages.NewEvent("big_json", data=data.CHAIR),
messages.NewEvent("big_json", data=data.CHAIR),
messages.NewEvent("big_json", data=data.CHAIR),
],
)
assert write_result.first_event_number == 0
read_result = await c.get(stream_name, 0)
print(read_result)
assert read_result[0].event.type == "big_json"
async def test_streaming_read(event_loop):
stream_name = str(uuid.uuid4())
async with connect(loop=event_loop, name="streaming-read") as c:
await given_a_stream_with_three_events(c, stream_name)
events_read = 0
async for event in c.iter(stream_name, batch_size=1):
logging.info("Handling event!")
events_read += 1
assert event.type == "pony_jumped"
assert events_read == 3
async def test_readall(event_loop):
async with connect(
username="******", # get_all aggregates all streams so it needs systemwide-read perms
password="******",
name="iter_all",
) as c:
stream_name = str(uuid.uuid4())
await given_two_streams_with_two_events(c, stream_name)
events_read = 0
for event in await c.get_all(max_count=4):
print(event)
events_read += 1
assert events_read == 4
async def import_stream():
# Use DI to initialize in real life
database_name = f"../../../../{DATABASE_NAME}"
ledger_repository = SqliteLedgerRepository(database_name=database_name)
repository = SqliteDeclineViewRepository(database_name=database_name)
projection = DeclineProjection(repository)
projector = DeclineProjector(projection)
stream_service = EventStoreStreamService(
photonpump.connect(username=EVENT_STORE_USERNAME,
password=EVENT_STORE_PASSWORD))
projectionist = DeclineProjectionist(projector=projector,
stream_service=stream_service,
ledger_repository=ledger_repository,
ledger_name=DECLINE_PROJECTION)
await projectionist.start()
def main():
# init connection
loop = asyncio.get_event_loop()
async with connect(loop=loop) as c:
await c.ping()
# init aggregate store
store = infrastructure.aggregate_store(connection=c)
print(command.screening.v1.schedule_screening(
movie_id="thor",
screening_id="123",
starts_at=dateutil.parser.parse("1 Jan 1970"),
theater_id="vue",
))
await _app_service(
)
async def test_read_with_max_count(event_loop):
stream_name = str(uuid.uuid4())
async with connect(loop=event_loop) as c:
await given_a_stream_with_three_events(c, stream_name)
result = await c.get(stream_name, max_count=1)
assert isinstance(result, list)
assert len(result) == 1
event = result[0]
assert event.type == "pony_jumped"
data = event.json()
assert data["Pony"] == "Derpy Hooves"
async def do_things():
async with photonpump.connect() as conn:
await write_an_event(conn)
await read_an_event(conn)
