airflow __init__ 源码
airflow init 代码
文件路径:/airflow/datasets/init.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
#
# 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 Any
from urllib.parse import urlparse
import attr
@attr.define()
class Dataset:
"""A Dataset is used for marking data dependencies between workflows."""
uri: str = attr.field(validator=[attr.validators.min_len(1), attr.validators.max_len(3000)])
extra: dict[str, Any] | None = None
@uri.validator
def _check_uri(self, attr, uri: str):
if uri.isspace():
raise ValueError(f'{attr.name} cannot be just whitespace')
try:
uri.encode('ascii')
except UnicodeEncodeError:
raise ValueError(f'{attr.name!r} must be ascii')
parsed = urlparse(uri)
if parsed.scheme and parsed.scheme.lower() == 'airflow':
raise ValueError(f'{attr.name!r} scheme `airflow` is reserved')
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