airflow init_manifest_files 源码
airflow init_manifest_files 代码
文件路径：/airflow/www/extensions/init_manifest_files.py
#
# 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
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# software distributed under the License is distributed on an
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# KIND, either express or implied. See the License for the
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from __future__ import annotations
import json
import os
from flask import url_for
def configure_manifest_files(app):
"""
Loads the manifest file and register the `url_for_asset_` template tag.
:param app:
:return:
"""
manifest = {}
def parse_manifest_json():
try:
manifest_file = os.path.join(os.path.dirname(__file__), os.pardir, 'static/dist/manifest.json')
with open(manifest_file) as file:
manifest.update(json.load(file))
for source, target in manifest.copy().items():
manifest[source] = os.path.join("dist", target)
except Exception:
print("Please make sure to build the frontend in static/ directory and restart the server")
def get_asset_url(filename):
if app.debug:
parse_manifest_json()
return url_for('static', filename=manifest.get(filename, ''))
parse_manifest_json()
@app.context_processor
def get_url_for_asset():
"""
Template tag to return the asset URL.
WebPack renders the assets after minification and modification
under the static/dist folder.
This template tag reads the asset name in manifest.json and returns
the appropriate file.
"""
return dict(url_for_asset=get_asset_url)
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