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annotate libervia/server/session_iface.py @ 1321:eb85ef26cb4a

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server: use `bulma` theme as default for default site: `default` theme is not used for now as real default, because dev work is focusing on bulma theme, and the default one may be broken. This should (or may not) change in the future.
author Goffi <goffi@goffi.org>
date Sat, 01 Aug 2020 16:56:04 +0200
parents 334d044f2713
children a0954b6610aa
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rev   line source
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1 #!/usr/bin/env python3
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2
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3 # Libervia: a SàT frontend
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4 # Copyright (C) 2009-2020 Jérôme Poisson (goffi@goffi.org)
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5
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6 # This program is free software: you can redistribute it and/or modify
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7 # it under the terms of the GNU Affero General Public License as published by
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8 # the Free Software Foundation, either version 3 of the License, or
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9 # (at your option) any later version.
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10
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11 # This program is distributed in the hope that it will be useful,
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12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 # GNU Affero General Public License for more details.
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15
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16 # You should have received a copy of the GNU Affero General Public License
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17 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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18 from zope.interface import Interface, Attribute
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19 from zope.interface import implementer
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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 libervia.server.classes import Notification
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23 from collections import OrderedDict
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24 import os.path
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25 import shortuuid
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26 import time
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27
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28 FLAGS_KEY = "_flags"
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29 NOTIFICATIONS_KEY = "_notifications"
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30 MAX_CACHE_AFFILIATIONS = 100 # number of nodes to keep in cache
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32
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33 class ISATSession(Interface):
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34 profile = Attribute("Sat profile")
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35 jid = Attribute("JID associated with the profile")
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36 uuid = Attribute("uuid associated with the profile session")
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37 identities = Attribute("Identities of XMPP entities")
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39
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40 @implementer(ISATSession)
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41 class SATSession(object):
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42
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43 def __init__(self, session):
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44 self.profile = None
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45 self.jid = None
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46 self.started = time.time()
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47 # time when the backend session was started
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48 self.backend_started = None
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49 self.uuid = str(shortuuid.uuid())
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50 self.identities = data_objects.Identities()
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51 self.csrf_token = str(shortuuid.uuid())
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52 self.locale = None # i18n of the pages
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53 self.theme = None
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54 self.pages_data = {} # used to keep data accross reloads (key is page instance)
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55 self.affiliations = OrderedDict() # cache for node affiliations
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56
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57 @property
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58 def cache_dir(self):
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59 if self.profile is None:
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60 return self.service_cache_url + "/"
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61 return os.path.join("/", C.CACHE_DIR, self.uuid) + "/"
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62
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63 @property
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64 def connected(self):
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65 return self.profile is not None
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66
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67 @property
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68 def guest(self):
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69 """True if this is a guest session"""
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70 if self.profile is None:
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71 return False
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72 else:
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73 return self.profile.startswith("guest@@")
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74
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75 def getPageData(self, page, key):
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76 """get session data for a page
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77
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78 @param page(LiberviaPage): instance of the page
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79 @param key(object): data key
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80 return (None, object): value of the key
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81 None if not found or page_data doesn't exist
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82 """
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83 return self.pages_data.get(page, {}).get(key)
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84
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85 def popPageData(self, page, key, default=None):
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86 """like getPageData, but remove key once value is gotten
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87
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88 @param page(LiberviaPage): instance of the page
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89 @param key(object): data key
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90 @param default(object): value to return if key is not found
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91 @return (object): found value or default
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92 """
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93 page_data = self.pages_data.get(page)
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94 if page_data is None:
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95 return default
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96 value = page_data.pop(key, default)
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97 if not page_data:
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98 # no need to keep unused page_data
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99 del self.pages_data[page]
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100 return value
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101
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102 def setPageData(self, page, key, value):
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103 """set data to persist on reload
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104
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105 @param page(LiberviaPage): instance of the page
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106 @param key(object): data key
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107 @param value(object): value to set
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108 @return (object): set value
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109 """
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110 page_data = self.pages_data.setdefault(page, {})
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111 page_data[key] = value
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112 return value
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113
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114 def setPageFlag(self, page, flag):
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115 """set a flag for this page
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116
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117 @param page(LiberviaPage): instance of the page
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118 @param flag(unicode): flag to set
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119 """
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120 flags = self.getPageData(page, FLAGS_KEY)
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121 if flags is None:
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122 flags = self.setPageData(page, FLAGS_KEY, set())
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123 flags.add(flag)
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124
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125 def popPageFlag(self, page, flag):
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126 """return True if flag is set
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127
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128 flag is removed if it was set
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129 @param page(LiberviaPage): instance of the page
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130 @param flag(unicode): flag to set
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131 @return (bool): True if flaag was set
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132 """
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133 page_data = self.pages_data.get(page, {})
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134 flags = page_data.get(FLAGS_KEY)
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135 if flags is None:
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136 return False
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137 if flag in flags:
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138 flags.remove(flag)
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139 # we remove data if they are not used anymore
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140 if not flags:
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141 del page_data[FLAGS_KEY]
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142 if not page_data:
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143 del self.pages_data[page]
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144 return True
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145 else:
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146 return False
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147
1186
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148 def setPageNotification(self, page, message, level=C.LVL_INFO):
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149 """set a flag for this page
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150
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151 @param page(LiberviaPage): instance of the page
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152 @param flag(unicode): flag to set
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153 """
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154 notif = Notification(message, level)
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155 notifs = self.getPageData(page, NOTIFICATIONS_KEY)
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156 if notifs is None:
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157 notifs = self.setPageData(page, NOTIFICATIONS_KEY, [])
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158 notifs.append(notif)
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159
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160 def popPageNotifications(self, page):
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161 """Return and remove last page notification
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162
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163 @param page(LiberviaPage): instance of the page
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164 @return (list[Notification]): notifications if any
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165 """
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166 page_data = self.pages_data.get(page, {})
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167 notifs = page_data.get(NOTIFICATIONS_KEY)
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168 if not notifs:
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169 return []
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170 ret = notifs[:]
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171 del notifs[:]
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172 return ret
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173
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174 def getAffiliation(self, service, node):
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175 """retrieve affiliation for a pubsub node
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176
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177 @param service(jid.JID): pubsub service
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178 @param node(unicode): pubsub node
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179 @return (unicode, None): affiliation, or None if it is not in cache
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180 """
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181 if service.resource:
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182 raise ValueError("Service must not have a resource")
1093
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183 if not node:
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184 raise ValueError("node must be set")
1093
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185 try:
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186 affiliation = self.affiliations.pop((service, node))
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187 except KeyError:
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188 return None
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189 else:
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190 # we replace at the top to get the most recently used on top
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191 # so less recently used will be removed if cache is full
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192 self.affiliations[(service, node)] = affiliation
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193 return affiliation
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194
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195 def setAffiliation(self, service, node, affiliation):
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196 """cache affiliation for a node
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parents: 1090
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197
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198 will empty cache when it become too big
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199 @param service(jid.JID): pubsub service
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diff changeset
200 @param node(unicode): pubsub node
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Goffi <goffi@goffi.org>
parents: 1090
diff changeset
201 @param affiliation(unicode): affiliation to this node
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Goffi <goffi@goffi.org>
parents: 1090
diff changeset
202 """
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Goffi <goffi@goffi.org>
parents: 1090
diff changeset
203 if service.resource:
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diff changeset
204 raise ValueError("Service must not have a resource")
1093
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Goffi <goffi@goffi.org>
parents: 1090
diff changeset
205 if not node:
1216
b2d067339de3 python 3 port:
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parents: 1186
diff changeset
206 raise ValueError("node must be set")
1093
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parents: 1090
diff changeset
207 self.affiliations[(service, node)] = affiliation
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Goffi <goffi@goffi.org>
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diff changeset
208 while len(self.affiliations) > MAX_CACHE_AFFILIATIONS:
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parents: 1090
diff changeset
209 self.affiliations.popitem(last=False)
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diff changeset
210
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parents:
diff changeset
211
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Goffi <goffi@goffi.org>
parents:
diff changeset
212 class ISATGuestSession(Interface):
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Goffi <goffi@goffi.org>
parents:
diff changeset
213 id = Attribute("UUID of the guest")
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Goffi <goffi@goffi.org>
parents:
diff changeset
214 data = Attribute("data associated with the guest")
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Goffi <goffi@goffi.org>
parents:
diff changeset
215
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Goffi <goffi@goffi.org>
parents:
diff changeset
216
1216
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Goffi <goffi@goffi.org>
parents: 1186
diff changeset
217 @implementer(ISATGuestSession)
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parents:
diff changeset
218 class SATGuestSession(object):
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Goffi <goffi@goffi.org>
parents:
diff changeset
219
7b267496da1d server: moved session interfaces to session_iface module + added SATGuestSession
Goffi <goffi@goffi.org>
parents:
diff changeset
220 def __init__(self, session):
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Goffi <goffi@goffi.org>
parents:
diff changeset
221 self.id = None
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Goffi <goffi@goffi.org>
parents:
diff changeset
222 self.data = None