def find_by_id(self, writer_id: ExternalWriterId) -> Optional[ExternalWriter]:
external_writer = CacheService.external_writer().get(writer_id)
if external_writer is not None:
if external_writer.tenantId != self.principalService.get_tenant_id():
raise DataKernelException(
f'External writer[id={writer_id}] not belongs to '
f'current tenant[id={self.principalService.get_tenant_id()}].')
register_external_writer(external_writer)
return external_writer
storage_service = ExternalWriterStorageService(
ask_meta_storage(), ask_snowflake_generator(), self.principalService)
storage_service.begin_transaction()
try:
# noinspection PyTypeChecker
external_writer: ExternalWriter = storage_service.find_by_id(writer_id)
if external_writer is None:
return None
CacheService.external_writer().put(external_writer)
register_external_writer(external_writer)
return external_writer
finally:
storage_service.close_transaction()
async def clear_all_external_writers_cache(
principal_service: PrincipalService = Depends(
get_super_admin_principal)) -> None:
CacheService.external_writer().clear()