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annotate libervia/server/session_iface.py @ 1165:6424d3684d1e

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pages: locale handling: language/locale can be set using C.KEY_LANG in url query (e.g. [url]?lang=fr), it is set for the whole session.
author Goffi <goffi@goffi.org>
date Wed, 10 Apr 2019 21:06:34 +0200
parents 2af117bfe6cc
children 352865f4a268
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rev   line source
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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 # Libervia: a SAT frontend
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5 # Copyright (C) 2009-2019 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 from zope.interface import Interface, Attribute, implements
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20 from sat.tools.common import data_objects
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21 from libervia.server.constants import Const as C
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22 from collections import OrderedDict
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23 import os.path
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24 import shortuuid
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25 import time
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26
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27 FLAGS_KEY = "_flags"
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28 MAX_CACHE_AFFILIATIONS = 100 # number of nodes to keep in cache
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29
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30
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31 class ISATSession(Interface):
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32 profile = Attribute("Sat profile")
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33 jid = Attribute("JID associated with the profile")
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34 uuid = Attribute("uuid associated with the profile session")
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35 identities = Attribute("Identities of XMPP entities")
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36
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37
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38 class SATSession(object):
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39 implements(ISATSession)
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40
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41 def __init__(self, session):
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42 self.profile = None
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43 self.jid = None
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44 self.started = time.time()
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45 # time when the backend session was started
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46 self.backend_started = None
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47 self.uuid = unicode(shortuuid.uuid())
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48 self.identities = data_objects.Identities()
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49 self.csrf_token = unicode(shortuuid.uuid())
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50 self.locale = None # i18n of the pages
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51 self.pages_data = {} # used to keep data accross reloads (key is page instance)
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52 self.affiliations = OrderedDict() # cache for node affiliations
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53
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54 @property
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55 def cache_dir(self):
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56 if self.profile is None:
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57 return self.service_cache_url + u"/"
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58 return os.path.join(u"/", C.CACHE_DIR, self.uuid) + u"/"
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59
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60 @property
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61 def connected(self):
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62 return self.profile is not None
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63
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64 @property
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65 def guest(self):
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66 """True if this is a guest session"""
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67 if self.profile is None:
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68 return False
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69 else:
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70 return self.profile.startswith("guest@@")
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71
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72 def getPageData(self, page, key):
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73 """get session data for a page
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74
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75 @param page(LiberviaPage): instance of the page
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76 @param key(object): data key
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77 return (None, object): value of the key
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78 None if not found or page_data doesn't exist
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79 """
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80 return self.pages_data.get(page, {}).get(key)
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81
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82 def popPageData(self, page, key, default=None):
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83 """like getPageData, but remove key once value is gotten
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84
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85 @param page(LiberviaPage): instance of the page
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86 @param key(object): data key
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87 @param default(object): value to return if key is not found
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88 @return (object): found value or default
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89 """
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90 page_data = self.pages_data.get(page)
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91 if page_data is None:
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92 return default
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93 value = page_data.pop(key, default)
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94 if not page_data:
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95 # no need to keep unused page_data
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96 del self.pages_data[page]
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97 return value
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98
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99 def setPageData(self, page, key, value):
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100 """set data to persist on reload
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101
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102 @param page(LiberviaPage): instance of the page
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103 @param key(object): data key
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104 @param value(object): value to set
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105 @return (object): set value
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106 """
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107 page_data = self.pages_data.setdefault(page, {})
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108 page_data[key] = value
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109 return value
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110
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111 def setPageFlag(self, page, flag):
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112 """set a flag for this page
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113
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114 @param page(LiberviaPage): instance of the page
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115 @param flag(unicode): flag to set
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116 """
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117 flags = self.getPageData(page, FLAGS_KEY)
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118 if flags is None:
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119 flags = self.setPageData(page, FLAGS_KEY, set())
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120 flags.add(flag)
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121
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122 def popPageFlag(self, page, flag):
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123 """return True if flag is set
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124
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125 flag is removed if it was set
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126 @param page(LiberviaPage): instance of the page
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127 @param flag(unicode): flag to set
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128 @return (bool): True if flaag was set
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129 """
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130 page_data = self.pages_data.get(page, {})
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131 flags = page_data.get(FLAGS_KEY)
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132 if flags is None:
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133 return False
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134 if flag in flags:
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Goffi <goffi@goffi.org>
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135 flags.remove(flag)
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Goffi <goffi@goffi.org>
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136 # we remove data if they are not used anymore
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Goffi <goffi@goffi.org>
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137 if not flags:
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Goffi <goffi@goffi.org>
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138 del page_data[FLAGS_KEY]
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139 if not page_data:
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140 del self.pages_data[page]
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141 return True
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Goffi <goffi@goffi.org>
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142 else:
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143 return False
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144
1093
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Goffi <goffi@goffi.org>
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145 def getAffiliation(self, service, node):
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Goffi <goffi@goffi.org>
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146 """retrieve affiliation for a pubsub node
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147
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148 @param service(jid.JID): pubsub service
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149 @param node(unicode): pubsub node
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150 @return (unicode, None): affiliation, or None if it is not in cache
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Goffi <goffi@goffi.org>
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151 """
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Goffi <goffi@goffi.org>
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152 if service.resource:
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Goffi <goffi@goffi.org>
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153 raise ValueError(u"Service must not have a resource")
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Goffi <goffi@goffi.org>
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154 if not node:
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Goffi <goffi@goffi.org>
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155 raise ValueError(u"node must be set")
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Goffi <goffi@goffi.org>
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156 try:
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Goffi <goffi@goffi.org>
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157 affiliation = self.affiliations.pop((service, node))
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158 except KeyError:
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159 return None
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Goffi <goffi@goffi.org>
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160 else:
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Goffi <goffi@goffi.org>
parents: 1090
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161 # we replace at the top to get the most recently used on top
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Goffi <goffi@goffi.org>
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162 # so less recently used will be removed if cache is full
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Goffi <goffi@goffi.org>
parents: 1090
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163 self.affiliations[(service, node)] = affiliation
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Goffi <goffi@goffi.org>
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164 return affiliation
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Goffi <goffi@goffi.org>
parents: 1090
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165
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Goffi <goffi@goffi.org>
parents: 1090
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166 def setAffiliation(self, service, node, affiliation):
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Goffi <goffi@goffi.org>
parents: 1090
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167 """cache affiliation for a node
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Goffi <goffi@goffi.org>
parents: 1090
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168
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Goffi <goffi@goffi.org>
parents: 1090
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169 will empty cache when it become too big
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Goffi <goffi@goffi.org>
parents: 1090
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170 @param service(jid.JID): pubsub service
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Goffi <goffi@goffi.org>
parents: 1090
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171 @param node(unicode): pubsub node
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Goffi <goffi@goffi.org>
parents: 1090
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172 @param affiliation(unicode): affiliation to this node
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Goffi <goffi@goffi.org>
parents: 1090
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173 """
eda7a1c6532a server: new getAffiliation method:
Goffi <goffi@goffi.org>
parents: 1090
diff changeset
174 if service.resource:
eda7a1c6532a server: new getAffiliation method:
Goffi <goffi@goffi.org>
parents: 1090
diff changeset
175 raise ValueError(u"Service must not have a resource")
eda7a1c6532a server: new getAffiliation method:
Goffi <goffi@goffi.org>
parents: 1090
diff changeset
176 if not node:
eda7a1c6532a server: new getAffiliation method:
Goffi <goffi@goffi.org>
parents: 1090
diff changeset
177 raise ValueError(u"node must be set")
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Goffi <goffi@goffi.org>
parents: 1090
diff changeset
178 self.affiliations[(service, node)] = affiliation
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Goffi <goffi@goffi.org>
parents: 1090
diff changeset
179 while len(self.affiliations) > MAX_CACHE_AFFILIATIONS:
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Goffi <goffi@goffi.org>
parents: 1090
diff changeset
180 self.affiliations.popitem(last=False)
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Goffi <goffi@goffi.org>
parents: 1090
diff changeset
181
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parents:
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182
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Goffi <goffi@goffi.org>
parents:
diff changeset
183 class ISATGuestSession(Interface):
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Goffi <goffi@goffi.org>
parents:
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184 id = Attribute("UUID of the guest")
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Goffi <goffi@goffi.org>
parents:
diff changeset
185 data = Attribute("data associated with the guest")
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Goffi <goffi@goffi.org>
parents:
diff changeset
186
7b267496da1d server: moved session interfaces to session_iface module + added SATGuestSession
Goffi <goffi@goffi.org>
parents:
diff changeset
187
7b267496da1d server: moved session interfaces to session_iface module + added SATGuestSession
Goffi <goffi@goffi.org>
parents:
diff changeset
188 class SATGuestSession(object):
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Goffi <goffi@goffi.org>
parents:
diff changeset
189 implements(ISATGuestSession)
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Goffi <goffi@goffi.org>
parents:
diff changeset
190
7b267496da1d server: moved session interfaces to session_iface module + added SATGuestSession
Goffi <goffi@goffi.org>
parents:
diff changeset
191 def __init__(self, session):
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Goffi <goffi@goffi.org>
parents:
diff changeset
192 self.id = None
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Goffi <goffi@goffi.org>
parents:
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193 self.data = None