annotate libervia/backend/memory/persistent.py @ 4118:07370d2a9bde

plugin XEP-0167: keep media order when starting a call: media content order is relevant when building Jingle contents/SDP notably for bundling. This patch fixes the previous behaviour of always using the same order by keeping the order of the data (i.e. order of original SDP offer). Previous behaviour could lead to call failure. rel 424
author Goffi <goffi@goffi.org>
date Tue, 03 Oct 2023 15:15:24 +0200
parents 4b842c1fb686
children 0d7bb4df2343
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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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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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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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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 from twisted.internet import defer
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21 from twisted.python import failure
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22 from libervia.backend.core.i18n import _
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23 from libervia.backend.core.log import getLogger
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26 log = getLogger(__name__)
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29 class MemoryNotInitializedError(Exception):
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30 pass
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32
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33 class PersistentDict:
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34 r"""A dictionary which save persistently each value assigned
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35
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36 /!\ be careful, each assignment means a database write
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37 /!\ Memory must be initialised before loading/setting value with instances of this class"""
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38 storage = None
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39 binary = False
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40
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41 def __init__(self, namespace, profile=None):
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42 """
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43
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44 @param namespace: unique namespace for this dictionary
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45 @param profile(unicode, None): profile which *MUST* exists, or None for general values
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46 """
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47 if not self.storage:
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48 log.error(_("PersistentDict can't be used before memory initialisation"))
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49 raise MemoryNotInitializedError
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50 self._cache = {}
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51 self.namespace = namespace
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52 self.profile = profile
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53
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54 def _set_cache(self, data):
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55 self._cache = data
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56
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57 def load(self):
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58 """Load persistent data from storage.
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59
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60 need to be called before any other operation
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61 @return: defers the PersistentDict instance itself
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62 """
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63 d = defer.ensureDeferred(self.storage.get_privates(
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64 self.namespace, binary=self.binary, profile=self.profile
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65 ))
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66 d.addCallback(self._set_cache)
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67 d.addCallback(lambda __: self)
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68 return d
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69
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70 def iteritems(self):
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71 return iter(self._cache.items())
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73 def items(self):
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74 return self._cache.items()
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76 def __repr__(self):
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77 return self._cache.__repr__()
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78
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79 def __str__(self):
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80 return self._cache.__str__()
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81
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82 def __lt__(self, other):
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83 return self._cache.__lt__(other)
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85 def __le__(self, other):
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86 return self._cache.__le__(other)
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87
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88 def __eq__(self, other):
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89 return self._cache.__eq__(other)
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90
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91 def __ne__(self, other):
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92 return self._cache.__ne__(other)
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93
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94 def __gt__(self, other):
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95 return self._cache.__gt__(other)
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97 def __ge__(self, other):
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98 return self._cache.__ge__(other)
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99
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100 def __cmp__(self, other):
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101 return self._cache.__cmp__(other)
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102
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103 def __hash__(self):
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104 return self._cache.__hash__()
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105
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106 def __bool__(self):
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107 return self._cache.__len__() != 0
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108
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109 def __contains__(self, key):
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110 return self._cache.__contains__(key)
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111
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112 def __iter__(self):
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113 return self._cache.__iter__()
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114
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115 def __getitem__(self, key):
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116 return self._cache.__getitem__(key)
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117
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118 def __setitem__(self, key, value):
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119 defer.ensureDeferred(
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120 self.storage.set_private_value(
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121 self.namespace, key, value, self.binary, self.profile
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122 )
888109774673 core: various changes and fixes to work with new storage and D-Bus bridge:
Goffi <goffi@goffi.org>
parents: 3479
diff changeset
123 )
432
31e8c48b5f5d core: - memory refactoring (moved memory.py and sqlite.py from tools to memory)
Goffi <goffi@goffi.org>
parents:
diff changeset
124 return self._cache.__setitem__(key, value)
31e8c48b5f5d core: - memory refactoring (moved memory.py and sqlite.py from tools to memory)
Goffi <goffi@goffi.org>
parents:
diff changeset
125
31e8c48b5f5d core: - memory refactoring (moved memory.py and sqlite.py from tools to memory)
Goffi <goffi@goffi.org>
parents:
diff changeset
126 def __delitem__(self, key):
4037
524856bd7b19 massive refactoring to switch from camelCase to snake_case:
Goffi <goffi@goffi.org>
parents: 3661
diff changeset
127 self.storage.del_private_value(self.namespace, key, self.binary, self.profile)
432
31e8c48b5f5d core: - memory refactoring (moved memory.py and sqlite.py from tools to memory)
Goffi <goffi@goffi.org>
parents:
diff changeset
128 return self._cache.__delitem__(key)
31e8c48b5f5d core: - memory refactoring (moved memory.py and sqlite.py from tools to memory)
Goffi <goffi@goffi.org>
parents:
diff changeset
129
2890
c652d079a9a1 core (memory/persistent): added clear method + initialise with a dict:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
130 def clear(self):
c652d079a9a1 core (memory/persistent): added clear method + initialise with a dict:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
131 """Delete all values from this namespace"""
c652d079a9a1 core (memory/persistent): added clear method + initialise with a dict:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
132 self._cache.clear()
4037
524856bd7b19 massive refactoring to switch from camelCase to snake_case:
Goffi <goffi@goffi.org>
parents: 3661
diff changeset
133 return self.storage.del_private_namespace(self.namespace, self.binary, self.profile)
2890
c652d079a9a1 core (memory/persistent): added clear method + initialise with a dict:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
134
442
ab9ddf6c7eaf core: added get method to PersistentDictionary
Goffi <goffi@goffi.org>
parents: 439
diff changeset
135 def get(self, key, default=None):
ab9ddf6c7eaf core: added get method to PersistentDictionary
Goffi <goffi@goffi.org>
parents: 439
diff changeset
136 return self._cache.get(key, default)
ab9ddf6c7eaf core: added get method to PersistentDictionary
Goffi <goffi@goffi.org>
parents: 439
diff changeset
137
3225
843a9279fb5a core (memory/persistent): implemented `aset` and `adel`:
Goffi <goffi@goffi.org>
parents: 3137
diff changeset
138 def aset(self, key, value):
843a9279fb5a core (memory/persistent): implemented `aset` and `adel`:
Goffi <goffi@goffi.org>
parents: 3137
diff changeset
139 """Async set, return a Deferred fired when value is actually stored"""
843a9279fb5a core (memory/persistent): implemented `aset` and `adel`:
Goffi <goffi@goffi.org>
parents: 3137
diff changeset
140 self._cache.__setitem__(key, value)
3541
888109774673 core: various changes and fixes to work with new storage and D-Bus bridge:
Goffi <goffi@goffi.org>
parents: 3479
diff changeset
141 return defer.ensureDeferred(
4037
524856bd7b19 massive refactoring to switch from camelCase to snake_case:
Goffi <goffi@goffi.org>
parents: 3661
diff changeset
142 self.storage.set_private_value(
3541
888109774673 core: various changes and fixes to work with new storage and D-Bus bridge:
Goffi <goffi@goffi.org>
parents: 3479
diff changeset
143 self.namespace, key, value, self.binary, self.profile
888109774673 core: various changes and fixes to work with new storage and D-Bus bridge:
Goffi <goffi@goffi.org>
parents: 3479
diff changeset
144 )
888109774673 core: various changes and fixes to work with new storage and D-Bus bridge:
Goffi <goffi@goffi.org>
parents: 3479
diff changeset
145 )
3225
843a9279fb5a core (memory/persistent): implemented `aset` and `adel`:
Goffi <goffi@goffi.org>
parents: 3137
diff changeset
146
843a9279fb5a core (memory/persistent): implemented `aset` and `adel`:
Goffi <goffi@goffi.org>
parents: 3137
diff changeset
147 def adel(self, key):
843a9279fb5a core (memory/persistent): implemented `aset` and `adel`:
Goffi <goffi@goffi.org>
parents: 3137
diff changeset
148 """Async del, return a Deferred fired when value is actually deleted"""
843a9279fb5a core (memory/persistent): implemented `aset` and `adel`:
Goffi <goffi@goffi.org>
parents: 3137
diff changeset
149 self._cache.__delitem__(key)
4037
524856bd7b19 massive refactoring to switch from camelCase to snake_case:
Goffi <goffi@goffi.org>
parents: 3661
diff changeset
150 return self.storage.del_private_value(
3225
843a9279fb5a core (memory/persistent): implemented `aset` and `adel`:
Goffi <goffi@goffi.org>
parents: 3137
diff changeset
151 self.namespace, key, self.binary, self.profile)
843a9279fb5a core (memory/persistent): implemented `aset` and `adel`:
Goffi <goffi@goffi.org>
parents: 3137
diff changeset
152
1340
91e72da1d093 core (persistent dict): added setdefault method
Goffi <goffi@goffi.org>
parents: 1292
diff changeset
153 def setdefault(self, key, default):
91e72da1d093 core (persistent dict): added setdefault method
Goffi <goffi@goffi.org>
parents: 1292
diff changeset
154 try:
91e72da1d093 core (persistent dict): added setdefault method
Goffi <goffi@goffi.org>
parents: 1292
diff changeset
155 return self._cache[key]
91e72da1d093 core (persistent dict): added setdefault method
Goffi <goffi@goffi.org>
parents: 1292
diff changeset
156 except:
91e72da1d093 core (persistent dict): added setdefault method
Goffi <goffi@goffi.org>
parents: 1292
diff changeset
157 self.__setitem__(key, default)
91e72da1d093 core (persistent dict): added setdefault method
Goffi <goffi@goffi.org>
parents: 1292
diff changeset
158 return default
91e72da1d093 core (persistent dict): added setdefault method
Goffi <goffi@goffi.org>
parents: 1292
diff changeset
159
432
31e8c48b5f5d core: - memory refactoring (moved memory.py and sqlite.py from tools to memory)
Goffi <goffi@goffi.org>
parents:
diff changeset
160 def force(self, name):
31e8c48b5f5d core: - memory refactoring (moved memory.py and sqlite.py from tools to memory)
Goffi <goffi@goffi.org>
parents:
diff changeset
161 """Force saving of an attribute to storage
2182
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
162
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
163 @return: deferred fired when data is actually saved
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
164 """
3541
888109774673 core: various changes and fixes to work with new storage and D-Bus bridge:
Goffi <goffi@goffi.org>
parents: 3479
diff changeset
165 return defer.ensureDeferred(
4037
524856bd7b19 massive refactoring to switch from camelCase to snake_case:
Goffi <goffi@goffi.org>
parents: 3661
diff changeset
166 self.storage.set_private_value(
3541
888109774673 core: various changes and fixes to work with new storage and D-Bus bridge:
Goffi <goffi@goffi.org>
parents: 3479
diff changeset
167 self.namespace, name, self._cache[name], self.binary, self.profile
888109774673 core: various changes and fixes to work with new storage and D-Bus bridge:
Goffi <goffi@goffi.org>
parents: 3479
diff changeset
168 )
888109774673 core: various changes and fixes to work with new storage and D-Bus bridge:
Goffi <goffi@goffi.org>
parents: 3479
diff changeset
169 )
432
31e8c48b5f5d core: - memory refactoring (moved memory.py and sqlite.py from tools to memory)
Goffi <goffi@goffi.org>
parents:
diff changeset
170
31e8c48b5f5d core: - memory refactoring (moved memory.py and sqlite.py from tools to memory)
Goffi <goffi@goffi.org>
parents:
diff changeset
171
31e8c48b5f5d core: - memory refactoring (moved memory.py and sqlite.py from tools to memory)
Goffi <goffi@goffi.org>
parents:
diff changeset
172 class PersistentBinaryDict(PersistentDict):
31e8c48b5f5d core: - memory refactoring (moved memory.py and sqlite.py from tools to memory)
Goffi <goffi@goffi.org>
parents:
diff changeset
173 """Persistent dict where value can be any python data (instead of string only)"""
2182
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
174 binary = True
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
175
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
176
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
177 class LazyPersistentBinaryDict(PersistentBinaryDict):
3028
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2890
diff changeset
178 r"""PersistentBinaryDict which get key/value when needed
2182
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
179
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
180 This Persistent need more database access, it is suitable for largest data,
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
181 to save memory.
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
182 /!\ most of methods return a Deferred
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
183 """
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
184 # TODO: missing methods should be implemented using database access
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
185 # TODO: a cache would be useful (which is deleted after a timeout)
587
952322b1d490 Remove trailing whitespaces.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 585
diff changeset
186
432
31e8c48b5f5d core: - memory refactoring (moved memory.py and sqlite.py from tools to memory)
Goffi <goffi@goffi.org>
parents:
diff changeset
187 def load(self):
2182
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
188 # we show a warning as calling load on LazyPersistentBinaryDict sounds like a code mistake
3028
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2890
diff changeset
189 log.warning(_("Calling load on LazyPersistentBinaryDict while it's not needed"))
2182
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
190
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
191 def iteritems(self):
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
192 raise NotImplementedError
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
193
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
194 def items(self):
4037
524856bd7b19 massive refactoring to switch from camelCase to snake_case:
Goffi <goffi@goffi.org>
parents: 3661
diff changeset
195 d = defer.ensureDeferred(self.storage.get_privates(
3541
888109774673 core: various changes and fixes to work with new storage and D-Bus bridge:
Goffi <goffi@goffi.org>
parents: 3479
diff changeset
196 self.namespace, binary=self.binary, profile=self.profile
888109774673 core: various changes and fixes to work with new storage and D-Bus bridge:
Goffi <goffi@goffi.org>
parents: 3479
diff changeset
197 ))
3253
1af840e84af7 core (memory/persistent): fixed "items", added "all" + "adel" to LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 3234
diff changeset
198 d.addCallback(lambda data_dict: data_dict.items())
1af840e84af7 core (memory/persistent): fixed "items", added "all" + "adel" to LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 3234
diff changeset
199 return d
1af840e84af7 core (memory/persistent): fixed "items", added "all" + "adel" to LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 3234
diff changeset
200
1af840e84af7 core (memory/persistent): fixed "items", added "all" + "adel" to LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 3234
diff changeset
201 def all(self):
4037
524856bd7b19 massive refactoring to switch from camelCase to snake_case:
Goffi <goffi@goffi.org>
parents: 3661
diff changeset
202 return defer.ensureDeferred(self.storage.get_privates(
3541
888109774673 core: various changes and fixes to work with new storage and D-Bus bridge:
Goffi <goffi@goffi.org>
parents: 3479
diff changeset
203 self.namespace, binary=self.binary, profile=self.profile
888109774673 core: various changes and fixes to work with new storage and D-Bus bridge:
Goffi <goffi@goffi.org>
parents: 3479
diff changeset
204 ))
2182
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
205
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
206 def __repr__(self):
3653
d2b17f0f2615 core (memory/persistent): implement `__repr__` (via `__str__`)
Goffi <goffi@goffi.org>
parents: 3479
diff changeset
207 return self.__str__()
2182
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
208
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
209 def __str__(self):
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
210 return "LazyPersistentBinaryDict (namespace: {})".format(self.namespace)
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
211
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
212 def __lt__(self, other):
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
213 raise NotImplementedError
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
214
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
215 def __le__(self, other):
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
216 raise NotImplementedError
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
217
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
218 def __eq__(self, other):
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
219 raise NotImplementedError
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
220
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
221 def __ne__(self, other):
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
222 raise NotImplementedError
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
223
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
224 def __gt__(self, other):
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
225 raise NotImplementedError
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
226
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
227 def __ge__(self, other):
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
228 raise NotImplementedError
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
229
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
230 def __cmp__(self, other):
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
231 raise NotImplementedError
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
232
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
233 def __hash__(self):
3028
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2890
diff changeset
234 return hash(str(self.__class__) + self.namespace + (self.profile or ''))
2182
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
235
3028
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2890
diff changeset
236 def __bool__(self):
2182
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
237 raise NotImplementedError
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
238
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
239 def __contains__(self, key):
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
240 raise NotImplementedError
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
241
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
242 def __iter__(self):
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
243 raise NotImplementedError
087eec4c6c07 memory (persistent, sqlite): better private values handling + new LazyPersistentBinaryDict:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
244
2644
e107089d6640 core (memory/persistent): better default value handling in LazyPersistentBinaryDict (don't jump to debugger in debug mode if value is not found)
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
245 def _data2value(self, data, key):
e107089d6640 core (memory/persistent): better default value handling in LazyPersistentBinaryDict (don't jump to debugger in debug mode if value is not found)
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
246 try:
e107089d6640 core (memory/persistent): better default value handling in LazyPersistentBinaryDict (don't jump to debugger in debug mode if value is not found)
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
247 return data[key]
e107089d6640 core (memory/persistent): better default value handling in LazyPersistentBinaryDict (don't jump to debugger in debug mode if value is not found)
Goffi <goffi@goffi.org>
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248 except KeyError as e:
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249 # we return a Failure here to avoid the jump
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250 # into debugger in debug mode.
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251 raise failure.Failure(e)
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252
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253 def __getitem__(self, key):
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254 """get the value as a Deferred"""
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255 d = defer.ensureDeferred(self.storage.get_privates(
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256 self.namespace, keys=[key], binary=self.binary, profile=self.profile
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257 ))
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258 d.addCallback(self._data2value, key)
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259 return d
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260
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261 def __setitem__(self, key, value):
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262 defer.ensureDeferred(
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263 self.storage.set_private_value(
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264 self.namespace, key, value, self.binary, self.profile
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265 )
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266 )
432
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267
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268 def __delitem__(self, key):
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269 self.storage.del_private_value(self.namespace, key, self.binary, self.profile)
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270
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271 def _default_or_exception(self, failure_, default):
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272 failure_.trap(KeyError)
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273 return default
432
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274
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275 def get(self, key, default=None):
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276 d = self.__getitem__(key)
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277 d.addErrback(self._default_or_exception, default=default)
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278 return d
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279
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280 def aset(self, key, value):
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281 """Async set, return a Deferred fired when value is actually stored"""
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282 # FIXME: redundant with force, force must be removed
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283 # XXX: similar as PersistentDict.aset, but doesn't use cache
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284 return defer.ensureDeferred(
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285 self.storage.set_private_value(
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286 self.namespace, key, value, self.binary, self.profile
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287 )
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288 )
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289
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290 def adel(self, key):
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291 """Async del, return a Deferred fired when value is actually deleted"""
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292 # XXX: similar as PersistentDict.adel, but doesn't use cache
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293 return self.storage.del_private_value(
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294 self.namespace, key, self.binary, self.profile)
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295
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296 def setdefault(self, key, default):
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297 raise NotImplementedError
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298
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299 def force(self, name, value):
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300 """Force saving of an attribute to storage
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301
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302 @param value(object): value is needed for LazyPersistentBinaryDict
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303 @return: deferred fired when data is actually saved
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304 """
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305 return defer.ensureDeferred(
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306 self.storage.set_private_value(
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307 self.namespace, name, value, self.binary, self.profile
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308 )
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309 )
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310
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311 def remove(self, key):
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312 """Delete a key from sotrage, and return a deferred called when it's done
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313
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314 @param key(unicode): key to delete
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315 @return (D): A deferred fired when delete is done
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316 """
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317 return self.storage.del_private_value(self.namespace, key, self.binary, self.profile)