mirror of
https://github.com/apache/superset.git
synced 2026-04-10 11:55:24 +00:00
72 lines
2.4 KiB
Python
72 lines
2.4 KiB
Python
# 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.
|
|
|
|
"""
|
|
This is the main entrypoint used by Celery workers. As such,
|
|
it needs to call create_app() in order to initialize things properly
|
|
"""
|
|
|
|
from typing import Any
|
|
|
|
from celery.signals import task_postrun, worker_process_init
|
|
|
|
# Superset framework imports
|
|
from superset import create_app
|
|
from superset.extensions import celery_app, db
|
|
|
|
# Init the Flask app / configure everything
|
|
flask_app = create_app()
|
|
|
|
# Need to import late, as the celery_app will have been setup by "create_app()"
|
|
# ruff: noqa: E402, F401
|
|
# pylint: disable=wrong-import-position, unused-import
|
|
from . import cache, scheduler
|
|
|
|
# Export the celery app globally for Celery (as run on the cmd line) to find
|
|
app = celery_app
|
|
|
|
|
|
@worker_process_init.connect
|
|
def reset_db_connection_pool(**kwargs: Any) -> None: # pylint: disable=unused-argument
|
|
with flask_app.app_context():
|
|
# https://docs.sqlalchemy.org/en/14/core/connections.html#engine-disposal
|
|
db.engine.dispose()
|
|
|
|
|
|
@task_postrun.connect
|
|
def teardown( # pylint: disable=unused-argument
|
|
retval: Any,
|
|
*args: Any,
|
|
**kwargs: Any,
|
|
) -> None:
|
|
"""
|
|
After each Celery task teardown the Flask-SQLAlchemy session.
|
|
|
|
Note for non eagar requests Flask-SQLAlchemy will perform the teardown.
|
|
|
|
:param retval: The return value of the task
|
|
:see: https://docs.celeryq.dev/en/stable/userguide/signals.html#task-postrun
|
|
:see: https://gist.github.com/twolfson/a1b329e9353f9b575131
|
|
"""
|
|
|
|
if flask_app.config.get("SQLALCHEMY_COMMIT_ON_TEARDOWN"):
|
|
if not isinstance(retval, Exception):
|
|
db.session.commit() # pylint: disable=consider-using-transaction
|
|
|
|
if not flask_app.config.get("CELERY_ALWAYS_EAGER"):
|
|
db.session.remove()
|