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# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
from __future__ import annotations
from typing import TYPE_CHECKING
from flask import current_app, g
from superset.tasks.exceptions import ExecutorNotFoundError
from superset.tasks.types import ExecutorType
if TYPE_CHECKING:
from superset.models.dashboard import Dashboard
from superset.models.slice import Slice
from superset.reports.models import ReportSchedule
# pylint: disable=too-many-branches
def get_executor(
executor_types: list[ExecutorType],
model: Dashboard | ReportSchedule | Slice,
current_user: str | None = None,
) -> tuple[ExecutorType, str]:
"""
Extract the user that should be used to execute a scheduled task. Certain executor
types extract the user from the underlying object (e.g. CREATOR), the constant
Selenium user (SELENIUM), or the user that initiated the request.
:param executor_types: The requested executor type in descending order. When the
first user is found it is returned.
:param model: The underlying object
:param current_user: The username of the user that initiated the task. For
thumbnails this is the user that requested the thumbnail, while for alerts
and reports this is None (=initiated by Celery).
:return: User to execute the report as
:raises ScheduledTaskExecutorNotFoundError: If no users were found in after
iterating through all entries in `executor_types`
"""
owners = model.owners
owner_dict = {owner.id: owner for owner in owners}
for executor_type in executor_types:
if executor_type == ExecutorType.SELENIUM:
return executor_type, current_app.config["THUMBNAIL_SELENIUM_USER"]
if executor_type == ExecutorType.CURRENT_USER and current_user:
return executor_type, current_user
if executor_type == ExecutorType.CREATOR_OWNER:
if (user := model.created_by) and (owner := owner_dict.get(user.id)):
return executor_type, owner.username
if executor_type == ExecutorType.CREATOR:
if user := model.created_by:
return executor_type, user.username
if executor_type == ExecutorType.MODIFIER_OWNER:
if (user := model.changed_by) and (owner := owner_dict.get(user.id)):
return executor_type, owner.username
if executor_type == ExecutorType.MODIFIER:
if user := model.changed_by:
return executor_type, user.username
if executor_type == ExecutorType.OWNER:
owners = model.owners
if len(owners) == 1:
return executor_type, owners[0].username
if len(owners) > 1:
if modifier := model.changed_by:
if modifier and (user := owner_dict.get(modifier.id)):
return executor_type, user.username
if creator := model.created_by:
if creator and (user := owner_dict.get(creator.id)):
return executor_type, user.username
return executor_type, owners[0].username
raise ExecutorNotFoundError()
def get_current_user() -> str | None:
user = g.user if hasattr(g, "user") and g.user else None
if user and not user.is_anonymous:
return user.username
return None