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66 lines
2.7 KiB
Python
66 lines
2.7 KiB
Python
# This file is part of Radicale - CalDAV and CardDAV server
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# Copyright © 2014 Jean-Marc Martins
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# Copyright © 2012-2017 Guillaume Ayoub
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# Copyright © 2017-2018 Unrud <unrud@outlook.com>
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#
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# This library is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Radicale. If not, see <http://www.gnu.org/licenses/>.
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import json
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import os
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from typing import Mapping, Optional, TextIO, Union, cast, overload
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import radicale.item as radicale_item
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from radicale.storage import multifilesystem
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from radicale.storage.multifilesystem.base import CollectionBase
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class CollectionPartMeta(CollectionBase):
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_meta_cache: Optional[Mapping[str, str]]
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_props_path: str
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def __init__(self, storage_: "multifilesystem.Storage", path: str,
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filesystem_path: Optional[str] = None) -> None:
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super().__init__(storage_, path, filesystem_path)
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self._meta_cache = None
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self._props_path = os.path.join(
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self._filesystem_path, ".Radicale.props")
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@overload
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def get_meta(self, key: None = None) -> Mapping[str, str]: ...
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@overload
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def get_meta(self, key: str) -> Optional[str]: ...
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def get_meta(self, key: Optional[str] = None) -> Union[Mapping[str, str],
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Optional[str]]:
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# reuse cached value if the storage is read-only
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if self._storage._lock.locked == "w" or self._meta_cache is None:
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try:
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try:
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with open(self._props_path, encoding=self._encoding) as f:
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temp_meta = json.load(f)
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except FileNotFoundError:
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temp_meta = {}
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self._meta_cache = radicale_item.check_and_sanitize_props(
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temp_meta)
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except ValueError as e:
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raise RuntimeError("Failed to load properties of collection "
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"%r: %s" % (self.path, e)) from e
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return self._meta_cache if key is None else self._meta_cache.get(key)
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def set_meta(self, props: Mapping[str, str]) -> None:
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with self._atomic_write(self._props_path, "w") as fo:
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f = cast(TextIO, fo)
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json.dump(props, f, sort_keys=True)
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