content: #  Copyright (c) ZenML GmbH 2022. All Rights Reserved.
  #
  #  Licensed 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:
  #
  #       https://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.
  """Base class for all ZenML settings."""
  
  from enum import IntFlag, auto
  from typing import Any, ClassVar, Dict, Union
  
  from pydantic import ConfigDict
  
  from zenml.config.secret_reference_mixin import SecretReferenceMixin
  
  SettingsOrDict = Union[Dict[str, Any], "BaseSettings"]
  
  
  class ConfigurationLevel(IntFlag):
      """Settings configuration level.
  
      Bit flag that can be used to specify where a `BaseSettings` subclass
      can be specified.
      """
  
      STEP = auto()
      PIPELINE = auto()
  
  
  class BaseSettings(SecretReferenceMixin):
      """Base class for settings.
  
      The `LEVEL` class variable defines on which level the settings can be
      specified. By default, subclasses can be defined on both pipelines and
      steps.
      """
  
      LEVEL: ClassVar[ConfigurationLevel] = (
          ConfigurationLevel.PIPELINE | ConfigurationLevel.STEP
      )
  
      model_config = ConfigDict(
          # public attributes are immutable
          frozen=True,
          # allow extra attributes so this class can be used to parse dicts
          # of arbitrary subclasses
          extra="allow",
      )
  