72 lines
2.2 KiB
Python
72 lines
2.2 KiB
Python
# -*- coding: utf-8 -*-
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"default plugin for cache: set it in a simple dictionary"
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# Copyright (C) 2013 Team tiramisu (see AUTHORS for all contributors)
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#
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# This program 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 2 of the License, or
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# (at your option) any later version.
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#
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# This program 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 this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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# ____________________________________________________________
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from tiramisu.i18n import _
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class Storage(object):
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__slots__ = tuple()
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def __init__(self, config_id, is_persistent):
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if is_persistent:
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raise ValueError(_('a dictionary cannot be persistent'))
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class Cache(object):
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__slots__ = ('_cache',)
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key_is_path = False
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def __init__(self):
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self._cache = {}
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def setcache(self, cache_type, path, val, time):
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self._cache[path] = (val, time)
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def getcache(self, cache_type, path, exp):
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value, created = self._cache[path]
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if exp < created:
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return True, value
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return False, None
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def hascache(self, cache_type, path):
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""" path is in the cache
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:param cache_type: value | property
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:param path: the path's option
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"""
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return path in self._cache
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def reset_expired_cache(self, cache_type, exp):
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keys = self._cache.keys()
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for key in keys:
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val, created = self._cache[key]
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if exp > created:
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del(self._cache[key])
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def reset_all_cache(self, cache_type):
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"empty the cache"
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self._cache.clear()
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def get_cached(self, cache_type, context):
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"""return all values in a dictionary
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example: {'path1': ('value1', 'time1'), 'path2': ('value2', 'time2')}
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"""
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return self._cache
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