annotate src/memory/persistent.py @ 1290:faa1129559b8 frontends_multi_profiles

core, frontends: refactoring to base Libervia on QuickFrontend (big mixed commit): /!\ not finished, everything is still instable ! - bridge: DBus bridge has been modified to allow blocking call to be called in the same way as asynchronous calls - bridge: calls with a callback and no errback are now possible, default errback log the error - constants: removed hack to manage presence without OrderedDict, as an OrderedDict like class has been implemented in Libervia - core: getLastResource has been removed and replaced by getMainResource (there is a global better management of resources) - various style improvments: use of constants when possible, fixed variable overlaps, import of module instead of direct class import - frontends: printInfo and printMessage methods in (Quick)Chat are more generic (use of extra instead of timestamp) - frontends: bridge creation and option parsing (command line arguments) are now specified by the frontend in QuickApp __init__ - frontends: ProfileManager manage a more complete plug sequence (some stuff formerly manage in contact_list have moved to ProfileManager) - quick_frontend (quick_widgets): QuickWidgetsManager is now iterable (all widgets are then returned), or can return an iterator on a specific class (return all widgets of this class) with getWidgets - frontends: tools.jid can now be used in Pyjamas, with some care - frontends (XMLUI): profile is now managed - core (memory): big improvment on entities cache management (and specially resource management) - core (params/exceptions): added PermissionError - various fixes and improvments, check diff for more details
author Goffi <goffi@goffi.org>
date Sat, 24 Jan 2015 01:00:29 +0100
parents f6182f6418ea
children b29a065a66f0
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1 #!/usr/bin/python
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2 # -*- coding: utf-8 -*-
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3
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4 # SAT: a jabber client
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5 # Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014 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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11
609
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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 sat.core.i18n import _
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21 from sat.core.log import getLogger
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22 log = getLogger(__name__)
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25 class MemoryNotInitializedError(Exception):
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26 pass
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28
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29 class PersistentDict(object):
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30 r"""A dictionary which save persistently each value assigned
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31 /!\ be careful, each assignment means a database write
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32 /!\ Memory must be initialised before loading/setting value with instances of this class"""
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33 storage = None
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34
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35 def __init__(self, namespace, profile=None):
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36 """@param namespace: unique namespace for this dictionary
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37 @param profile: profile which *MUST* exists, or None for general values"""
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38 if not self.storage:
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39 log.error(_("PersistentDict can't be used before memory initialisation"))
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40 raise MemoryNotInitializedError
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41 self._cache = {}
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42 self.namespace = namespace
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43 self.profile = profile
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45 def load(self):
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46 """Load persistent data from storage.
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48 @return: defers the PersistentDict instance itself
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49 """
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50 if not self.profile:
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51 d = self.storage.loadGenPrivates(self._cache, self.namespace)
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52 else:
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53 d = self.storage.loadIndPrivates(self._cache, self.namespace, self.profile)
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54 return d.addCallback(lambda dummy: self)
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55
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56 def __repr__(self):
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57 return self._cache.__repr__()
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58
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59 def __str__(self):
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60 return self._cache.__str__()
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62 def __lt__(self, other):
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63 return self._cache.__lt__(other)
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64
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65 def __le__(self, other):
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66 return self._cache.__le__(other)
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68 def __eq__(self, other):
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69 return self._cache.__eq__(other)
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71 def __ne__(self, other):
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72 return self._cache.__ne__(other)
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74 def __gt__(self, other):
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75 return self._cache.__gt__(other)
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77 def __ge__(self, other):
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78 return self._cache.__ge__(other)
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79
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80 def __cmp__(self, other):
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81 return self._cache.__cmp__(other)
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82
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83 def __hash__(self):
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84 return self._cache.__hash__()
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85
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86 def __nonzero__(self):
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87 return self._cache.__len__()
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88
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89 def __contains__(self, key):
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90 return self._cache.__contains__(key)
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91
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92 def __iter__(self):
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93 return self._cache.__iter__()
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94
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95 def __getitem__(self, key):
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96 return self._cache.__getitem__(key)
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98 def __setitem__(self, key, value):
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99 if not self.profile:
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100 self.storage.setGenPrivate(self.namespace, key, value)
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101 else:
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102 self.storage.setIndPrivate(self.namespace, key, value, self.profile)
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103 return self._cache.__setitem__(key, value)
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104
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105 def __delitem__(self, key):
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106 if not self.profile:
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107 self.storage.delGenPrivate(self.namespace, key)
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108 else:
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109 self.storage.delIndPrivate(self.namespace, key, self.profile)
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110 return self._cache.__delitem__(key)
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111
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112 def get(self, key, default=None):
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113 return self._cache.get(key, default)
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114
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115 def force(self, name):
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116 """Force saving of an attribute to storage
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117 @return: deferred fired when data is actually saved"""
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118 if not self.profile:
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119 return self.storage.setGenPrivate(self.namespace, name, self._cache[name])
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120 return self.storage.setIndPrivate(self.namespace, name, self._cache[name], self.profile)
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121
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122
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123 class PersistentBinaryDict(PersistentDict):
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124 """Persistent dict where value can be any python data (instead of string only)"""
587
952322b1d490 Remove trailing whitespaces.
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125
432
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126 def load(self):
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127 """load persistent data from storage
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128 """
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129 if not self.profile:
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130 return self.storage.loadGenPrivatesBinary(self._cache, self.namespace)
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131 else:
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132 return self.storage.loadIndPrivatesBinary(self._cache, self.namespace, self.profile)
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133
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134 def __setitem__(self, key, value):
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135 if not self.profile:
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136 self.storage.setGenPrivateBinary(self.namespace, key, value)
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137 else:
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138 self.storage.setIndPrivateBinary(self.namespace, key, value, self.profile)
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139 return self._cache.__setitem__(key, value)
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140
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141 def __delitem__(self, key):
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142 if not self.profile:
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143 self.storage.delGenPrivateBinary(self.namespace, key)
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144 else:
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145 self.storage.delIndPrivateBinary(self.namespace, key, self.profile)
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146 return self._cache.__delitem__(key)
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147
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148 def force(self, name):
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149 """Force saving of an attribute to storage
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150 @return: deferred fired when data is actually saved"""
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151 if not self.profile:
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152 return self.storage.setGenPrivateBinary(self.namespace, name, self._cache[name])
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153 return self.storage.setIndPrivateBinary(self.namespace, name, self._cache[name], self.profile)