annotate sat/memory/cache.py @ 3643:30196b9a2b4c

plugin XEP-0277: use `common.uri` to parse comment URIs
author Goffi <goffi@goffi.org>
date Wed, 08 Sep 2021 11:14:53 +0200
parents b3fa179417e7
children 2863345c9bbb
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1 #!/usr/bin/env python3
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2
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3
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4 # SAT: a jabber client
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5 # Copyright (C) 2009-2021 Jérôme Poisson (goffi@goffi.org)
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6
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7 # This program is free software: you can redistribute it and/or modify
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8 # it under the terms of the GNU Affero General Public License as published by
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9 # the Free Software Foundation, either version 3 of the License, or
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10 # (at your option) any later version.
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11
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12 # This program is distributed in the hope that it will be useful,
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 # GNU Affero General Public License for more details.
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16
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17 # You should have received a copy of the GNU Affero General Public License
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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19
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20 import pickle as pickle
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21 import mimetypes
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22 import time
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23 from pathlib import Path
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24 from sat.core.i18n import _
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25 from sat.core.log import getLogger
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26 from sat.core.constants import Const as C
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27 from sat.core import exceptions
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28 from sat.tools.common import regex
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29
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30
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31 log = getLogger(__name__)
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32
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33 DEFAULT_EXT = ".raw"
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34
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35
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36 class Cache(object):
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37 """generic file caching"""
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38
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39 def __init__(self, host, profile):
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40 """
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41 @param profile(unicode, None): ame of the profile to set the cache for
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42 if None, the cache will be common for all profiles
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43 """
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44 self.profile = profile
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45 path_elts = [host.memory.getConfig("", "local_dir"), C.CACHE_DIR]
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46 if profile:
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47 path_elts.extend(["profiles", regex.pathEscape(profile)])
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48 else:
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49 path_elts.append("common")
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50 self.cache_dir = Path(*path_elts)
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51
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52 self.cache_dir.mkdir(0o700, parents=True, exist_ok=True)
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53 self.purge()
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54
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55 def purge(self):
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56 # remove expired files from cache
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57 # TODO: this should not be called only on startup, but at regular interval
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58 # (e.g. once a day)
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59 purged = set()
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60 # we sort files to have metadata files first
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61 for cache_file in sorted(self.cache_dir.iterdir()):
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62 if cache_file in purged:
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63 continue
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64 try:
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65 with cache_file.open('rb') as f:
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66 cache_data = pickle.load(f)
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67 except IOError:
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68 log.warning(
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69 _("Can't read metadata file at {path}")
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70 .format(path=cache_file))
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71 continue
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72 except (pickle.UnpicklingError, EOFError):
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73 log.debug(f"File at {cache_file} is not a metadata file")
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74 continue
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75 try:
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76 eol = cache_data['eol']
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77 filename = cache_data['filename']
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78 except KeyError:
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79 log.warning(
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80 _("Invalid cache metadata at {path}")
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81 .format(path=cache_file))
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82 continue
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83
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84 filepath = self.getPath(filename)
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85
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86 if not filepath.exists():
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87 log.warning(_(
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88 "cache {cache_file!r} references an inexisting file: {filepath!r}"
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89 ).format(cache_file=str(cache_file), filepath=str(filepath)))
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90 log.debug("purging cache with missing file")
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91 cache_file.unlink()
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92 elif eol < time.time():
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93 log.debug(
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94 "purging expired cache {filepath!r} (expired for {time}s)"
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95 .format(filepath=str(filepath), time=int(time.time() - eol))
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96 )
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97 cache_file.unlink()
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98 try:
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99 filepath.unlink()
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100 except FileNotFoundError:
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101 log.warning(
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102 _("following file is missing while purging cache: {path}")
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103 .format(path=filepath)
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104 )
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105 purged.add(cache_file)
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106 purged.add(filepath)
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107
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108 def getPath(self, filename):
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109 """return cached file URL
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110
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111 @param filename(str): cached file name (cache data or actual file)
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112 @return (Path): path to the cached file
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113 """
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114 if not filename or "/" in filename:
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115 log.error(
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116 "invalid char found in file name, hack attempt? name:{}".format(filename)
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117 )
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118 raise exceptions.DataError("Invalid char found")
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119 return self.cache_dir / filename
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120
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121 def getMetadata(self, uid, update_eol=True):
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122 """Retrieve metadata for cached data
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123
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124 @param uid(unicode): unique identifier of file
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125 @param update_eol(bool): True if eol must extended
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126 if True, max_age will be added to eol (only if it is not already expired)
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127 @return (dict, None): metadata with following keys:
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128 see [cacheData] for data details, an additional "path" key is the full path to
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129 cached file.
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130 None if file is not in cache (or cache is invalid)
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131 """
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132
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133 uid = uid.strip()
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134 if not uid:
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135 raise exceptions.InternalError("uid must not be empty")
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136 cache_url = self.getPath(uid)
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137 if not cache_url.exists():
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138 return None
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parents:
diff changeset
139
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
140 try:
3185
554b3b632378 memory (cache): purge + pathlib:
Goffi <goffi@goffi.org>
parents: 3137
diff changeset
141 with cache_url.open("rb") as f:
2109
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parents:
diff changeset
142 cache_data = pickle.load(f)
3572
b3fa179417e7 core (memory/cache): don't crash on EOFError in getMetadata
Goffi <goffi@goffi.org>
parents: 3479
diff changeset
143 except (IOError, EOFError) as e:
3188
a15773c6c273 memory(cache): extend EOL when a file metadata is retrieved
Goffi <goffi@goffi.org>
parents: 3185
diff changeset
144 log.warning(f"can't read cache at {cache_url}: {e}")
2109
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
145 return None
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
146 except pickle.UnpicklingError:
3188
a15773c6c273 memory(cache): extend EOL when a file metadata is retrieved
Goffi <goffi@goffi.org>
parents: 3185
diff changeset
147 log.warning(f"invalid cache found at {cache_url}")
2109
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
148 return None
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 try:
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parents: 2562
diff changeset
151 eol = cache_data["eol"]
2109
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parents:
diff changeset
152 except KeyError:
3028
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
153 log.warning("no End Of Life found for cached file {}".format(uid))
2109
85f3e12e984d core (memory/cache): file caching handling, first draft:
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parents:
diff changeset
154 eol = 0
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
155 if eol < time.time():
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
156 log.debug(
3028
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
157 "removing expired cache (expired for {}s)".format(time.time() - eol)
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
158 )
2109
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
159 return None
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
160
3188
a15773c6c273 memory(cache): extend EOL when a file metadata is retrieved
Goffi <goffi@goffi.org>
parents: 3185
diff changeset
161 if update_eol:
a15773c6c273 memory(cache): extend EOL when a file metadata is retrieved
Goffi <goffi@goffi.org>
parents: 3185
diff changeset
162 try:
a15773c6c273 memory(cache): extend EOL when a file metadata is retrieved
Goffi <goffi@goffi.org>
parents: 3185
diff changeset
163 max_age = cache_data["max_age"]
a15773c6c273 memory(cache): extend EOL when a file metadata is retrieved
Goffi <goffi@goffi.org>
parents: 3185
diff changeset
164 except KeyError:
a15773c6c273 memory(cache): extend EOL when a file metadata is retrieved
Goffi <goffi@goffi.org>
parents: 3185
diff changeset
165 log.warning(f"no max_age found for cache at {cache_url}, using default")
a15773c6c273 memory(cache): extend EOL when a file metadata is retrieved
Goffi <goffi@goffi.org>
parents: 3185
diff changeset
166 max_age = cache_data["max_age"] = C.DEFAULT_MAX_AGE
3198
08151c103636 core (memory/cache): added some metadata:
Goffi <goffi@goffi.org>
parents: 3188
diff changeset
167 now = int(time.time())
08151c103636 core (memory/cache): added some metadata:
Goffi <goffi@goffi.org>
parents: 3188
diff changeset
168 cache_data["last_access"] = now
08151c103636 core (memory/cache): added some metadata:
Goffi <goffi@goffi.org>
parents: 3188
diff changeset
169 cache_data["eol"] = now + max_age
3188
a15773c6c273 memory(cache): extend EOL when a file metadata is retrieved
Goffi <goffi@goffi.org>
parents: 3185
diff changeset
170 with cache_url.open("wb") as f:
a15773c6c273 memory(cache): extend EOL when a file metadata is retrieved
Goffi <goffi@goffi.org>
parents: 3185
diff changeset
171 pickle.dump(cache_data, f, protocol=2)
a15773c6c273 memory(cache): extend EOL when a file metadata is retrieved
Goffi <goffi@goffi.org>
parents: 3185
diff changeset
172
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
173 cache_data["path"] = self.getPath(cache_data["filename"])
2517
cd7a53c31eb6 core (memory/cache): new getMetadata method to retrieve metadata without opening the file
Goffi <goffi@goffi.org>
parents: 2509
diff changeset
174 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
175
cd7a53c31eb6 core (memory/cache): new getMetadata method to retrieve metadata without opening the file
Goffi <goffi@goffi.org>
parents: 2509
diff changeset
176 def getFilePath(self, uid):
3185
554b3b632378 memory (cache): purge + pathlib:
Goffi <goffi@goffi.org>
parents: 3137
diff changeset
177 """Retrieve absolute path to file
2517
cd7a53c31eb6 core (memory/cache): new getMetadata method to retrieve metadata without opening the file
Goffi <goffi@goffi.org>
parents: 2509
diff changeset
178
cd7a53c31eb6 core (memory/cache): new getMetadata method to retrieve metadata without opening the file
Goffi <goffi@goffi.org>
parents: 2509
diff changeset
179 @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
180 @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
181 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
182 """
cd7a53c31eb6 core (memory/cache): new getMetadata method to retrieve metadata without opening the file
Goffi <goffi@goffi.org>
parents: 2509
diff changeset
183 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
184 if metadata is not None:
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
185 return metadata["path"]
2109
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
186
3210
fedec192a83f core (memory/cache): new removeFromCache method
Goffi <goffi@goffi.org>
parents: 3209
diff changeset
187 def removeFromCache(self, uid, metadata=None):
fedec192a83f core (memory/cache): new removeFromCache method
Goffi <goffi@goffi.org>
parents: 3209
diff changeset
188 """Remove data from cache
fedec192a83f core (memory/cache): new removeFromCache method
Goffi <goffi@goffi.org>
parents: 3209
diff changeset
189
fedec192a83f core (memory/cache): new removeFromCache method
Goffi <goffi@goffi.org>
parents: 3209
diff changeset
190 @param uid(unicode): unique identifier cache file
fedec192a83f core (memory/cache): new removeFromCache method
Goffi <goffi@goffi.org>
parents: 3209
diff changeset
191 """
fedec192a83f core (memory/cache): new removeFromCache method
Goffi <goffi@goffi.org>
parents: 3209
diff changeset
192 cache_data = self.getMetadata(uid, update_eol=False)
fedec192a83f core (memory/cache): new removeFromCache method
Goffi <goffi@goffi.org>
parents: 3209
diff changeset
193 if cache_data is None:
fedec192a83f core (memory/cache): new removeFromCache method
Goffi <goffi@goffi.org>
parents: 3209
diff changeset
194 log.debug(f"cache with uid {uid!r} has already expired or been removed")
fedec192a83f core (memory/cache): new removeFromCache method
Goffi <goffi@goffi.org>
parents: 3209
diff changeset
195 return
fedec192a83f core (memory/cache): new removeFromCache method
Goffi <goffi@goffi.org>
parents: 3209
diff changeset
196
fedec192a83f core (memory/cache): new removeFromCache method
Goffi <goffi@goffi.org>
parents: 3209
diff changeset
197 try:
fedec192a83f core (memory/cache): new removeFromCache method
Goffi <goffi@goffi.org>
parents: 3209
diff changeset
198 filename = cache_data['filename']
fedec192a83f core (memory/cache): new removeFromCache method
Goffi <goffi@goffi.org>
parents: 3209
diff changeset
199 except KeyError:
fedec192a83f core (memory/cache): new removeFromCache method
Goffi <goffi@goffi.org>
parents: 3209
diff changeset
200 log.warning(_("missing filename for cache {uid!r}") .format(uid=uid))
fedec192a83f core (memory/cache): new removeFromCache method
Goffi <goffi@goffi.org>
parents: 3209
diff changeset
201 else:
fedec192a83f core (memory/cache): new removeFromCache method
Goffi <goffi@goffi.org>
parents: 3209
diff changeset
202 filepath = self.getPath(filename)
fedec192a83f core (memory/cache): new removeFromCache method
Goffi <goffi@goffi.org>
parents: 3209
diff changeset
203 try:
fedec192a83f core (memory/cache): new removeFromCache method
Goffi <goffi@goffi.org>
parents: 3209
diff changeset
204 filepath.unlink()
fedec192a83f core (memory/cache): new removeFromCache method
Goffi <goffi@goffi.org>
parents: 3209
diff changeset
205 except FileNotFoundError:
fedec192a83f core (memory/cache): new removeFromCache method
Goffi <goffi@goffi.org>
parents: 3209
diff changeset
206 log.warning(
fedec192a83f core (memory/cache): new removeFromCache method
Goffi <goffi@goffi.org>
parents: 3209
diff changeset
207 _("missing file referenced in cache {uid!r}: {filename}")
fedec192a83f core (memory/cache): new removeFromCache method
Goffi <goffi@goffi.org>
parents: 3209
diff changeset
208 .format(uid=uid, filename=filename)
fedec192a83f core (memory/cache): new removeFromCache method
Goffi <goffi@goffi.org>
parents: 3209
diff changeset
209 )
fedec192a83f core (memory/cache): new removeFromCache method
Goffi <goffi@goffi.org>
parents: 3209
diff changeset
210
fedec192a83f core (memory/cache): new removeFromCache method
Goffi <goffi@goffi.org>
parents: 3209
diff changeset
211 cache_file = self.getPath(uid)
fedec192a83f core (memory/cache): new removeFromCache method
Goffi <goffi@goffi.org>
parents: 3209
diff changeset
212 cache_file.unlink()
fedec192a83f core (memory/cache): new removeFromCache method
Goffi <goffi@goffi.org>
parents: 3209
diff changeset
213 log.debug(f"cache with uid {uid!r} has been removed")
fedec192a83f core (memory/cache): new removeFromCache method
Goffi <goffi@goffi.org>
parents: 3209
diff changeset
214
2509
d485e9416493 core (memory/cache): common cache:
Goffi <goffi@goffi.org>
parents: 2506
diff changeset
215 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
216 """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
217
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
218 @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
219 @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
220 @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
221 it will be used notably to guess file extension
3198
08151c103636 core (memory/cache): added some metadata:
Goffi <goffi@goffi.org>
parents: 3188
diff changeset
222 It may be autogenerated if filename is specified
2109
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
223 @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
224 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
225 None to use default value
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
226 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
227 @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
228 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
229 @return(file): file object opened in write mode
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
230 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
231 """
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
232 cache_url = self.getPath(uid)
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
233 if filename is None:
2509
d485e9416493 core (memory/cache): common cache:
Goffi <goffi@goffi.org>
parents: 2506
diff changeset
234 if mime_type:
d485e9416493 core (memory/cache): common cache:
Goffi <goffi@goffi.org>
parents: 2506
diff changeset
235 ext = mimetypes.guess_extension(mime_type, strict=False)
d485e9416493 core (memory/cache): common cache:
Goffi <goffi@goffi.org>
parents: 2506
diff changeset
236 if ext is None:
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
237 log.warning(
3028
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
238 "can't find extension for MIME type {}".format(mime_type)
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
239 )
2509
d485e9416493 core (memory/cache): common cache:
Goffi <goffi@goffi.org>
parents: 2506
diff changeset
240 ext = DEFAULT_EXT
3028
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
241 elif ext == ".jpe":
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
242 ext = ".jpg"
2509
d485e9416493 core (memory/cache): common cache:
Goffi <goffi@goffi.org>
parents: 2506
diff changeset
243 else:
d485e9416493 core (memory/cache): common cache:
Goffi <goffi@goffi.org>
parents: 2506
diff changeset
244 ext = DEFAULT_EXT
d485e9416493 core (memory/cache): common cache:
Goffi <goffi@goffi.org>
parents: 2506
diff changeset
245 mime_type = None
2109
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
246 filename = uid + ext
3198
08151c103636 core (memory/cache): added some metadata:
Goffi <goffi@goffi.org>
parents: 3188
diff changeset
247 elif mime_type is None:
08151c103636 core (memory/cache): added some metadata:
Goffi <goffi@goffi.org>
parents: 3188
diff changeset
248 # we have filename but not MIME type, we try to guess the later
08151c103636 core (memory/cache): added some metadata:
Goffi <goffi@goffi.org>
parents: 3188
diff changeset
249 mime_type = mimetypes.guess_type(filename, strict=False)[0]
2109
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
250 if max_age is None:
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
251 max_age = C.DEFAULT_MAX_AGE
3198
08151c103636 core (memory/cache): added some metadata:
Goffi <goffi@goffi.org>
parents: 3188
diff changeset
252 now = int(time.time())
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
253 cache_data = {
3028
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
254 "source": source,
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
255 "filename": filename,
3198
08151c103636 core (memory/cache): added some metadata:
Goffi <goffi@goffi.org>
parents: 3188
diff changeset
256 "creation": now,
08151c103636 core (memory/cache): added some metadata:
Goffi <goffi@goffi.org>
parents: 3188
diff changeset
257 "eol": now + max_age,
3188
a15773c6c273 memory(cache): extend EOL when a file metadata is retrieved
Goffi <goffi@goffi.org>
parents: 3185
diff changeset
258 # we also store max_age for updating eol
a15773c6c273 memory(cache): extend EOL when a file metadata is retrieved
Goffi <goffi@goffi.org>
parents: 3185
diff changeset
259 "max_age": max_age,
3028
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
260 "mime_type": mime_type,
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
261 }
2109
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
262 file_path = self.getPath(filename)
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
263
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
264 with open(cache_url, "wb") as f:
2109
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
265 pickle.dump(cache_data, f, protocol=2)
85f3e12e984d core (memory/cache): file caching handling, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
266
3185
554b3b632378 memory (cache): purge + pathlib:
Goffi <goffi@goffi.org>
parents: 3137
diff changeset
267 return file_path.open("wb")