97 lines
3.5 KiB
Python
97 lines
3.5 KiB
Python
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# coding=utf-8
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# Copyright 2022-present, the HuggingFace Inc. team.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Contain helper class to retrieve/store token from/to local cache."""
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import warnings
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from pathlib import Path
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from typing import Optional
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from .. import constants
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from ._token import get_token
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class HfFolder:
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path_token = Path(constants.HF_TOKEN_PATH)
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# Private attribute. Will be removed in v0.15
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_old_path_token = Path(constants._OLD_HF_TOKEN_PATH)
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# TODO: deprecate when adapted in transformers/datasets/gradio
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# @_deprecate_method(version="1.0", message="Use `huggingface_hub.login` instead.")
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@classmethod
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def save_token(cls, token: str) -> None:
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"""
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Save token, creating folder as needed.
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Token is saved in the huggingface home folder. You can configure it by setting
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the `HF_HOME` environment variable.
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Args:
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token (`str`):
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The token to save to the [`HfFolder`]
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"""
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cls.path_token.parent.mkdir(parents=True, exist_ok=True)
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cls.path_token.write_text(token)
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# TODO: deprecate when adapted in transformers/datasets/gradio
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# @_deprecate_method(version="1.0", message="Use `huggingface_hub.get_token` instead.")
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@classmethod
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def get_token(cls) -> Optional[str]:
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"""
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Get token or None if not existent.
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This method is deprecated in favor of [`huggingface_hub.get_token`] but is kept for backward compatibility.
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Its behavior is the same as [`huggingface_hub.get_token`].
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Returns:
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`str` or `None`: The token, `None` if it doesn't exist.
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"""
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# 0. Check if token exist in old path but not new location
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try:
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cls._copy_to_new_path_and_warn()
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except Exception: # if not possible (e.g. PermissionError), do not raise
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pass
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return get_token()
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# TODO: deprecate when adapted in transformers/datasets/gradio
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# @_deprecate_method(version="1.0", message="Use `huggingface_hub.logout` instead.")
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@classmethod
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def delete_token(cls) -> None:
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"""
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Deletes the token from storage. Does not fail if token does not exist.
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"""
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try:
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cls.path_token.unlink()
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except FileNotFoundError:
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pass
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try:
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cls._old_path_token.unlink()
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except FileNotFoundError:
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pass
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@classmethod
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def _copy_to_new_path_and_warn(cls):
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if cls._old_path_token.exists() and not cls.path_token.exists():
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cls.save_token(cls._old_path_token.read_text())
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warnings.warn(
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f"A token has been found in `{cls._old_path_token}`. This is the old"
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" path where tokens were stored. The new location is"
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f" `{cls.path_token}` which is configurable using `HF_HOME` environment"
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" variable. Your token has been copied to this new location. You can"
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" now safely delete the old token file manually or use"
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" `huggingface-cli logout`."
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)
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