"""
Copyright 2025 Google LLC

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.
"""

from abc import ABC, abstractmethod


class RemoteStateClient(ABC):
  """This is a base class that defines methods a class for managing remote cluster state.
  Args:
      ABC (_type_): _description_
  """

  @abstractmethod
  def upload_state(self) -> None:
    """Upload state to remote storage"""
    return None

  @abstractmethod
  def download_state(self) -> None:
    """Download state from remote storage"""
    return None

  @abstractmethod
  def check_remote_state_exists(self) -> bool:
    return False
