50 lines
1.9 KiB
Python
50 lines
1.9 KiB
Python
# This file is part of Radicale Server - Calendar 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 radicale import item as radicale_item
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class CollectionMetaMixin:
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def __init__(self):
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super().__init__()
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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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def get_meta(self, key=None):
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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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self._meta_cache = json.load(f)
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except FileNotFoundError:
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self._meta_cache = {}
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radicale_item.check_and_sanitize_props(self._meta_cache)
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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.get(key) if key else self._meta_cache
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def set_meta(self, props):
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with self._atomic_write(self._props_path, "w") as f:
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json.dump(props, f, sort_keys=True)
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