2013-09-06 23:15:28 +02:00
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# -*- coding: utf-8 -*-
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2014-01-20 14:53:08 +01:00
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"utils used by storage"
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2017-07-08 15:59:56 +02:00
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# Copyright (C) 2013-2017 Team tiramisu (see AUTHORS for all contributors)
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2013-09-06 23:15:28 +02:00
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#
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2013-09-22 22:33:09 +02:00
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# This program is free software: you can redistribute it and/or modify it
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# under the terms of the GNU Lesser General Public License as published by the
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# Free Software Foundation, either version 3 of the License, or (at your
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# option) any later version.
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2013-09-06 23:15:28 +02:00
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#
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2013-09-22 22:33:09 +02:00
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# This program is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
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# details.
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2013-09-06 23:15:28 +02:00
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#
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2013-09-22 22:33:09 +02:00
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# You should have received a copy of the GNU Lesser General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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2013-09-06 23:15:28 +02:00
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# ____________________________________________________________
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2017-11-12 14:33:05 +01:00
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FIXME = 0
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def POUET(obj):
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return(obj.__class__.__name__.lower())
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DEBUG = False
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#DEBUG = True
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2013-09-22 20:57:52 +02:00
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2013-09-06 23:15:28 +02:00
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class Cache(object):
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2013-09-22 20:57:52 +02:00
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__slots__ = ('_cache', '_storage')
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2013-09-06 23:15:28 +02:00
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key_is_path = False
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def __init__(self, storage):
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self._cache = {}
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2013-09-22 20:57:52 +02:00
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self._storage = storage
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2015-11-29 23:03:08 +01:00
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def setcache(self, path, val, time, index):
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2017-07-08 15:59:56 +02:00
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"""add val in cache for a specified path
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if slave, add index
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"""
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2017-11-12 14:33:05 +01:00
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if DEBUG:
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global FIXME
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FIXME += 1
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2017-11-23 16:56:14 +01:00
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print('ca set cache', path, val, POUET(self), FIXME, id(self))
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2017-11-12 14:33:05 +01:00
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#if path is not None and (path.startswith('od.st.') or path.startswith('od.dod.')):
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# raise Exception('mais ... mais ... mais')
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#if FIXME == 111:
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# raise Exception('rah')
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2015-11-29 23:03:08 +01:00
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self._cache.setdefault(path, {})[index] = (val, time)
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2013-09-06 23:15:28 +02:00
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2015-11-29 23:03:08 +01:00
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def getcache(self, path, exp, index):
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value, created = self._cache[path][index]
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2013-09-07 22:37:13 +02:00
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if created is None or exp <= created:
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2017-11-12 14:33:05 +01:00
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if DEBUG:
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global FIXME
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FIXME += 1
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2017-11-23 16:56:14 +01:00
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print('ca trouve dans le cache', path, value, POUET(self), FIXME, id(self))
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2017-11-12 14:33:05 +01:00
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#if path is not None and (path.startswith('od.st.') or path.startswith('od.dod.')):
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# raise Exception('mais ... mais ... mais')
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#if FIXME == 45:
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# raise Exception('rah')
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2013-09-06 23:15:28 +02:00
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return True, value
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2017-02-03 23:39:24 +01:00
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return False, None # pragma: no cover
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2013-09-06 23:15:28 +02:00
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2017-07-08 15:59:56 +02:00
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def delcache(self, path):
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"""remove cache for a specified path
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"""
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2017-11-12 14:33:05 +01:00
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if DEBUG:
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global FIXME
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FIXME += 1
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2017-11-23 16:56:14 +01:00
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print('ca del cache', path, POUET(self), FIXME, id(self))
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2017-11-12 14:33:05 +01:00
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#if path is not None and (path.startswith('od.st.') or path.startswith('od.dod.')):
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# raise Exception('mais ... mais ... mais')
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#if FIXME == 23:
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# raise Exception('rah')
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2017-07-08 15:59:56 +02:00
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if path in self._cache:
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del self._cache[path]
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2015-11-29 23:03:08 +01:00
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def hascache(self, path, index):
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""" path is in the cache
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:param path: the path's option
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"""
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2017-11-12 14:33:05 +01:00
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if DEBUG:
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print('ca cherche dans le cache', path, POUET(self), id(self))
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2015-11-29 23:03:08 +01:00
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return path in self._cache and index in self._cache[path]
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2013-09-06 23:15:28 +02:00
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2013-09-07 17:25:22 +02:00
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def reset_expired_cache(self, exp):
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2016-03-19 21:27:37 +01:00
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cache_keys = list(self._cache.keys())
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for key in cache_keys:
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key_cache_keys = list(self._cache[key].keys())
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for index in key_cache_keys:
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2015-11-29 23:03:08 +01:00
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val, created = self._cache[key][index]
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if created is not None and exp > created:
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del(self._cache[key][index])
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if self._cache[key] == {}:
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del(self._cache[key])
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2013-09-06 23:15:28 +02:00
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2013-09-07 17:25:22 +02:00
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def reset_all_cache(self):
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2013-09-06 23:15:28 +02:00
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"empty the cache"
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2017-11-12 14:33:05 +01:00
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if DEBUG:
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2017-11-23 16:56:14 +01:00
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print('bzzzzzzzzzzzz delete tout le cache', POUET(self), id(self))
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2013-09-06 23:15:28 +02:00
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self._cache.clear()
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2017-09-22 08:26:11 +02:00
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def get_cached(self):
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2013-09-06 23:15:28 +02:00
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"""return all values in a dictionary
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2015-11-29 23:03:08 +01:00
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example: {'path1': {'index1': ('value1', 'time1')}, 'path2': {'index2': ('value2', 'time2', )}}
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2013-09-06 23:15:28 +02:00
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"""
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return self._cache
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