airflow/models/base.py

# -*- coding: utf-8 -*-
#
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# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
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#
#   http://www.apache.org/licenses/LICENSE-2.0
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from typing import Any

from sqlalchemy import MetaData
from sqlalchemy.ext.declarative import declarative_base

from airflow.configuration import conf

SQL_ALCHEMY_SCHEMA = conf.get("core", "SQL_ALCHEMY_SCHEMA")

metadata = (
    None
    if not SQL_ALCHEMY_SCHEMA or SQL_ALCHEMY_SCHEMA.isspace()
    else MetaData(schema=SQL_ALCHEMY_SCHEMA)
)
Base = declarative_base(metadata=metadata)  # type: Any

ID_LEN = 250