superset celery_app 源码
superset celery_app 代码
文件路径：/superset/tasks/celery_app.py
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# to you under the Apache License, Version 2.0 (the
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# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
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"""
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 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()"
# pylint: disable=wrong-import-position, unused-import
from . import cache, scheduler # isort:skip
# 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()
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