Mercurial > libervia-backend

annotate sat/memory/cache.py @ 2609:75d2ac872965

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
jp (base): do not crash when item is specified (e.g. in URL) but not needed in command, but display a message on stderr.
author Goffi <goffi@goffi.org>
date Wed, 06 Jun 2018 19:24:15 +0200
parents 26edcf3a30eb
children 56f94936df1e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
2109
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
1 #!/usr/bin/env python2
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
2 # -*- coding: utf-8 -*-
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
3
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
4 # SAT: a jabber client
2483
0046283a285d dates update
Goffi <goffi@goffi.org>
parents: 2414
diff changeset
5 # Copyright (C) 2009-2018 Jérôme Poisson (goffi@goffi.org)
2109
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
6
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
7 # This program is free software: you can redistribute it and/or modify
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
8 # it under the terms of the GNU Affero General Public License as published by
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
9 # the Free Software Foundation, either version 3 of the License, or
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
10 # (at your option) any later version.
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
11
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
12 # This program is distributed in the hope that it will be useful,
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
15 # GNU Affero General Public License for more details.
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
16
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
17 # You should have received a copy of the GNU Affero General Public License
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
19
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
20 from sat.core.log import getLogger
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
21 log = getLogger(__name__)
2166
1b3fbb76984b core (memory/cache): escape profile when creating cache dir
Goffi <goffi@goffi.org>
parents: 2116
diff changeset
22 from sat.tools.common import regex
2109
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
23 from sat.core import exceptions
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
24 from sat.core.constants import Const as C
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
25 import cPickle as pickle
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
26 import mimetypes
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
27 import os.path
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
28 import time
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
29
2509
d485e9416493 core (memory/cache): common cache:
Goffi <goffi@goffi.org>
parents: 2506
diff changeset
30 DEFAULT_EXT = '.raw'
d485e9416493 core (memory/cache): common cache:
Goffi <goffi@goffi.org>
parents: 2506
diff changeset
31
2109
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
32
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
33 class Cache(object):
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
34 """generic file caching"""
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
35
2509
d485e9416493 core (memory/cache): common cache:
Goffi <goffi@goffi.org>
parents: 2506
diff changeset
36 def __init__(self, host, profile):
d485e9416493 core (memory/cache): common cache:
Goffi <goffi@goffi.org>
parents: 2506
diff changeset
37 """
d485e9416493 core (memory/cache): common cache:
Goffi <goffi@goffi.org>
parents: 2506
diff changeset
38 @param profile(unicode, None): ame of the profile to set the cache for
d485e9416493 core (memory/cache): common cache:
Goffi <goffi@goffi.org>
parents: 2506
diff changeset
39 if None, the cache will be common for all profiles
d485e9416493 core (memory/cache): common cache:
Goffi <goffi@goffi.org>
parents: 2506
diff changeset
40 """
2109
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
41 self.profile = profile
2509
d485e9416493 core (memory/cache): common cache:
Goffi <goffi@goffi.org>
parents: 2506
diff changeset
42 path_elts = [host.memory.getConfig('', 'local_dir'), C.CACHE_DIR]
d485e9416493 core (memory/cache): common cache:
Goffi <goffi@goffi.org>
parents: 2506
diff changeset
43 if profile:
d485e9416493 core (memory/cache): common cache:
Goffi <goffi@goffi.org>
parents: 2506
diff changeset
44 path_elts.extend([u'profiles',regex.pathEscape(profile)])
d485e9416493 core (memory/cache): common cache:
Goffi <goffi@goffi.org>
parents: 2506
diff changeset
45 else:
d485e9416493 core (memory/cache): common cache:
Goffi <goffi@goffi.org>
parents: 2506
diff changeset
46 path_elts.append(u'common')
d485e9416493 core (memory/cache): common cache:
Goffi <goffi@goffi.org>
parents: 2506
diff changeset
47 self.cache_dir = os.path.join(*path_elts)
d485e9416493 core (memory/cache): common cache:
Goffi <goffi@goffi.org>
parents: 2506
diff changeset
48
2109
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
49 if not os.path.exists(self.cache_dir):
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
50 os.makedirs(self.cache_dir)
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
51
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
52 def getPath(self, filename):
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
53 """return cached file URL
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
54
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
55 @param filename(unicode): cached file name (cache data or actual file)
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
56 """
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
57 if not filename or u'/' in filename:
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
58 log.error(u"invalid char found in file name, hack attempt? name:{}".format(filename))
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
59 raise exceptions.DataError(u"Invalid char found")
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
60 return os.path.join(self.cache_dir, filename)
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
61
2517
cd7a53c31eb6 core (memory/cache): new getMetadata method to retrieve metadata without opening the file
Goffi <goffi@goffi.org>
parents: 2509
diff changeset
62 def getMetadata(self, uid):
cd7a53c31eb6 core (memory/cache): new getMetadata method to retrieve metadata without opening the file
Goffi <goffi@goffi.org>
parents: 2509
diff changeset
63 """retrieve metadata for cached data
2109
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
64
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
65 @param uid(unicode): unique identifier of file
2517
cd7a53c31eb6 core (memory/cache): new getMetadata method to retrieve metadata without opening the file
Goffi <goffi@goffi.org>
parents: 2509
diff changeset
66 @return (dict, None): metadata with following keys:
cd7a53c31eb6 core (memory/cache): new getMetadata method to retrieve metadata without opening the file
Goffi <goffi@goffi.org>
parents: 2509
diff changeset
67 see [cacheData] for data details, an additional "path" key is the full path to cached file.
2109
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
68 None if file is not in cache (or cache is invalid)
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
69 """
2517
cd7a53c31eb6 core (memory/cache): new getMetadata method to retrieve metadata without opening the file
Goffi <goffi@goffi.org>
parents: 2509
diff changeset
70
2116
766dbbec56f2 core (memory/cache): geFilePath now return None when uid is empty
Goffi <goffi@goffi.org>
parents: 2109
diff changeset
71 uid = uid.strip()
766dbbec56f2 core (memory/cache): geFilePath now return None when uid is empty
Goffi <goffi@goffi.org>
parents: 2109
diff changeset
72 if not uid:
2509
d485e9416493 core (memory/cache): common cache:
Goffi <goffi@goffi.org>
parents: 2506
diff changeset
73 raise exceptions.InternalError(u"uid must not be empty")
2109
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
74 cache_url = self.getPath(uid)
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
75 if not os.path.exists(cache_url):
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
76 return None
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
77
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
78 try:
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
79 with open(cache_url, 'rb') as f:
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
80 cache_data = pickle.load(f)
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
81 except IOError:
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
82 log.warning(u"can't read cache at {}".format(cache_url))
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
83 return None
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
84 except pickle.UnpicklingError:
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
85 log.warning(u'invalid cache found at {}'.format(cache_url))
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
86 return None
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
87
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
88 try:
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
89 eol = cache_data['eol']
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
90 except KeyError:
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
91 log.warning(u'no End Of Life found for cached file {}'.format(uid))
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
92 eol = 0
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
93 if eol < time.time():
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
94 log.debug(u"removing expired cache (expired for {}s)".format(
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
95 time.time() - eol))
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
96 return None
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
97
2517
cd7a53c31eb6 core (memory/cache): new getMetadata method to retrieve metadata without opening the file
Goffi <goffi@goffi.org>
parents: 2509
diff changeset
98 cache_data['path'] = self.getPath(cache_data['filename'])
cd7a53c31eb6 core (memory/cache): new getMetadata method to retrieve metadata without opening the file
Goffi <goffi@goffi.org>
parents: 2509
diff changeset
99 return cache_data
cd7a53c31eb6 core (memory/cache): new getMetadata method to retrieve metadata without opening the file
Goffi <goffi@goffi.org>
parents: 2509
diff changeset
100
cd7a53c31eb6 core (memory/cache): new getMetadata method to retrieve metadata without opening the file
Goffi <goffi@goffi.org>
parents: 2509
diff changeset
101 def getFilePath(self, uid):
cd7a53c31eb6 core (memory/cache): new getMetadata method to retrieve metadata without opening the file
Goffi <goffi@goffi.org>
parents: 2509
diff changeset
102 """retrieve absolute path to file
cd7a53c31eb6 core (memory/cache): new getMetadata method to retrieve metadata without opening the file
Goffi <goffi@goffi.org>
parents: 2509
diff changeset
103
cd7a53c31eb6 core (memory/cache): new getMetadata method to retrieve metadata without opening the file
Goffi <goffi@goffi.org>
parents: 2509
diff changeset
104 @param uid(unicode): unique identifier of file
cd7a53c31eb6 core (memory/cache): new getMetadata method to retrieve metadata without opening the file
Goffi <goffi@goffi.org>
parents: 2509
diff changeset
105 @return (unicode, None): absolute path to cached file
cd7a53c31eb6 core (memory/cache): new getMetadata method to retrieve metadata without opening the file
Goffi <goffi@goffi.org>
parents: 2509
diff changeset
106 None if file is not in cache (or cache is invalid)
cd7a53c31eb6 core (memory/cache): new getMetadata method to retrieve metadata without opening the file
Goffi <goffi@goffi.org>
parents: 2509
diff changeset
107 """
cd7a53c31eb6 core (memory/cache): new getMetadata method to retrieve metadata without opening the file
Goffi <goffi@goffi.org>
parents: 2509
diff changeset
108 metadata = self.getMetadata(uid)
cd7a53c31eb6 core (memory/cache): new getMetadata method to retrieve metadata without opening the file
Goffi <goffi@goffi.org>
parents: 2509
diff changeset
109 if metadata is not None:
cd7a53c31eb6 core (memory/cache): new getMetadata method to retrieve metadata without opening the file
Goffi <goffi@goffi.org>
parents: 2509
diff changeset
110 return metadata['path']
2109
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
111
2509
d485e9416493 core (memory/cache): common cache:
Goffi <goffi@goffi.org>
parents: 2506
diff changeset
112 def cacheData(self, source, uid, mime_type=None, max_age=None, filename=None):
2109
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
113 """create cache metadata and file object to use for actual data
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
114
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
115 @param source(unicode): source of the cache (should be plugin's import_name)
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
116 @param uid(unicode): an identifier of the file which must be unique
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
117 @param mime_type(unicode): MIME type of the file to cache
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
118 it will be used notably to guess file extension
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
119 @param max_age(int, None): maximum age in seconds
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
120 the cache metadata will have an "eol" (end of life)
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
121 None to use default value
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
122 0 to ignore cache (file will be re-downloaded on each access)
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
123 @param filename: if not None, will be used as filename
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
124 else one will be generated from uid and guessed extension
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
125 @return(file): file object opened in write mode
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
126 you have to close it yourself (hint: use with statement)
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
127 """
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
128 cache_url = self.getPath(uid)
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
129 if filename is None:
2509
d485e9416493 core (memory/cache): common cache:
Goffi <goffi@goffi.org>
parents: 2506
diff changeset
130 if mime_type:
d485e9416493 core (memory/cache): common cache:
Goffi <goffi@goffi.org>
parents: 2506
diff changeset
131 ext = mimetypes.guess_extension(mime_type, strict=False)
d485e9416493 core (memory/cache): common cache:
Goffi <goffi@goffi.org>
parents: 2506
diff changeset
132 if ext is None:
d485e9416493 core (memory/cache): common cache:
Goffi <goffi@goffi.org>
parents: 2506
diff changeset
133 log.warning(u"can't find extension for MIME type {}".format(mime_type))
d485e9416493 core (memory/cache): common cache:
Goffi <goffi@goffi.org>
parents: 2506
diff changeset
134 ext = DEFAULT_EXT
d485e9416493 core (memory/cache): common cache:
Goffi <goffi@goffi.org>
parents: 2506
diff changeset
135 elif ext == u'.jpe':
d485e9416493 core (memory/cache): common cache:
Goffi <goffi@goffi.org>
parents: 2506
diff changeset
136 ext = u'.jpg'
d485e9416493 core (memory/cache): common cache:
Goffi <goffi@goffi.org>
parents: 2506
diff changeset
137 else:
d485e9416493 core (memory/cache): common cache:
Goffi <goffi@goffi.org>
parents: 2506
diff changeset
138 ext = DEFAULT_EXT
d485e9416493 core (memory/cache): common cache:
Goffi <goffi@goffi.org>
parents: 2506
diff changeset
139 mime_type = None
2109
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
140 filename = uid + ext
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
141 if max_age is None:
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
142 max_age = C.DEFAULT_MAX_AGE
2509
d485e9416493 core (memory/cache): common cache:
Goffi <goffi@goffi.org>
parents: 2506
diff changeset
143 cache_data = {u'source': source,
d485e9416493 core (memory/cache): common cache:
Goffi <goffi@goffi.org>
parents: 2506
diff changeset
144 u'filename': filename,
d485e9416493 core (memory/cache): common cache:
Goffi <goffi@goffi.org>
parents: 2506
diff changeset
145 u'eol': int(time.time()) + max_age,
d485e9416493 core (memory/cache): common cache:
Goffi <goffi@goffi.org>
parents: 2506
diff changeset
146 u'mime_type': mime_type,
2109
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
147 }
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
148 file_path = self.getPath(filename)
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
149
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
150 with open(cache_url, 'wb') as f:
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
151 pickle.dump(cache_data, f, protocol=2)
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
152
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
153 return open(file_path, 'wb')