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https://github.com/Kozea/Radicale.git
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73 lines
2.9 KiB
Python
73 lines
2.9 KiB
Python
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# 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 contextlib
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import logging
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import os
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import shlex
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import subprocess
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from radicale import pathutils
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from radicale.log import logger
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class CollectionLockMixin:
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@classmethod
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def static_init(cls):
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super().static_init()
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folder = os.path.expanduser(cls.configuration.get(
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"storage", "filesystem_folder"))
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lock_path = os.path.join(folder, ".Radicale.lock")
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cls._lock = pathutils.RwLock(lock_path)
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def _acquire_cache_lock(self, ns=""):
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if self._lock.locked == "w":
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return contextlib.ExitStack()
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cache_folder = os.path.join(self._filesystem_path, ".Radicale.cache")
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self._makedirs_synced(cache_folder)
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lock_path = os.path.join(cache_folder,
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".Radicale.lock" + (".%s" % ns if ns else ""))
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lock = pathutils.RwLock(lock_path)
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return lock.acquire("w")
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@classmethod
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@contextlib.contextmanager
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def acquire_lock(cls, mode, user=None):
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with cls._lock.acquire(mode):
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yield
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# execute hook
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hook = cls.configuration.get("storage", "hook")
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if mode == "w" and hook:
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folder = os.path.expanduser(cls.configuration.get(
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"storage", "filesystem_folder"))
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logger.debug("Running hook")
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debug = logger.isEnabledFor(logging.DEBUG)
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p = subprocess.Popen(
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hook % {"user": shlex.quote(user or "Anonymous")},
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stdin=subprocess.DEVNULL,
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stdout=subprocess.PIPE if debug else subprocess.DEVNULL,
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stderr=subprocess.PIPE if debug else subprocess.DEVNULL,
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shell=True, universal_newlines=True, cwd=folder)
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stdout_data, stderr_data = p.communicate()
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if stdout_data:
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logger.debug("Captured stdout hook:\n%s", stdout_data)
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if stderr_data:
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logger.debug("Captured stderr hook:\n%s", stderr_data)
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if p.returncode != 0:
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raise subprocess.CalledProcessError(p.returncode, p.args)
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