def _raise_already_enqueued(self, exc: exceptions.UniqueViolation,
job: jobs.Job):
if exc.constraint_name == connector.QUEUEING_LOCK_CONSTRAINT:
raise exceptions.AlreadyEnqueued(
"Job cannot be enqueued: there is already a job in the queue "
f"with the lock {job.queueing_lock}") from exc
raise exc
def _raise_already_enqueued(self, exc: exceptions.UniqueViolation,
queueing_lock: Optional[str]):
if exc.constraint_name == QUEUEING_LOCK_CONSTRAINT:
raise exceptions.AlreadyEnqueued(
"Job cannot be enqueued: there is already a job in the queue "
f"with the queueing lock {queueing_lock}") from exc
raise exc
async def defer_job(self, job: jobs.Job) -> int:
try:
result = await self.connector.execute_query_one(
query=sql.queries["defer_job"],
task_name=job.task_name,
lock=job.lock,
queueing_lock=job.queueing_lock,
args=job.task_kwargs,
scheduled_at=job.scheduled_at,
queue=job.queue,
)
except exceptions.UniqueViolation as exc:
if exc.constraint_name == connector.QUEUEING_LOCK_CONSTRAINT:
raise exceptions.AlreadyEnqueued(
"Job cannot be enqueued: there is already a job in the queue "
f"with the lock {job.queueing_lock}") from exc
raise
return result["id"]