async def update_status_history(payload: Something,
context: EventContext) -> Something:
if payload.status:
payload.history.append(payload.status)
payload.status = Status(ts=datetime.now(tz=timezone.utc),
type=StatusType.LOADED)
return payload
def stream_event(payload: Something, context: EventContext) -> Something:
logger.info(context,
"streaming event",
extra=extra(something_id=payload.id))
if payload.status:
payload.history.append(payload.status)
payload.status = Status(ts=datetime.now(tz=timezone.utc),
type=StatusType.SUBMITTED)
return payload
async def fork_something(payload: Something, context: EventContext) -> Spawn[Union[FirstPart, SecondPart]]:
"""
Produces 2 variants from payload to be processed in parallel
"""
logger.info(context, "producing 2 variants of payload", extra=extra(something_id=payload.id))
if payload.status:
payload.history.append(payload.status)
payload.status = Status(
ts=datetime.now(tz=timezone.utc),
type=StatusType.SUBMITTED
)
yield FirstPart(payload)
yield SecondPart(payload)
def update_status(payload: Something, context: EventContext) -> Something:
"""
Updates status of payload to PROCESSED and puts previous status in history.
:param payload: Something, object
:param context: EventContext
"""
logger.info(context,
"updating something status",
extra=extra(something_id=payload.id))
if payload.status:
payload.history.append(payload.status)
payload.status = Status(ts=datetime.now(), type=StatusType.PROCESSED)
return payload
async def spawn_many_events(payload: Something,
context: EventContext) -> Spawn[Something]:
"""
Produces 3 events to be published to stream
"""
logger.info(context,
"spawning event 3 times",
extra=extra(something_id=payload.id))
if payload.status:
payload.history.append(payload.status)
for i in range(3):
payload.status = Status(ts=datetime.now(tz=timezone.utc),
type=StatusType.SUBMITTED)
payload.id = str(i)
yield payload
