annotate sat_pubsub/memory_storage.py @ 235:64f780413b82

fixed Ralph Meijer copyright years (last commit was in 2011, not in 2009)
author Goffi <goffi@goffi.org>
date Thu, 17 May 2012 01:59:56 +0200
parents 51af2ed8bd50
children d55620ceafed
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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 """
235
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5 Copyright (c) 2003-2011 Ralph Meijer
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6 Copyright (c) 2012 Jérôme Poisson
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7
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8
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9 This program is free software: you can redistribute it and/or modify
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10 it under the terms of the GNU Affero General Public License as published by
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11 the Free Software Foundation, either version 3 of the License, or
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12 (at your option) any later version.
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13
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14 This program is distributed in the hope that it will be useful,
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15 but WITHOUT ANY WARRANTY; without even the implied warranty of
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16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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17 GNU Affero General Public License for more details.
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18
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19 You should have received a copy of the GNU Affero General Public License
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20 along with this program. If not, see <http://www.gnu.org/licenses/>.
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21 --
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22
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23 This program is based on Idavoll (http://idavoll.ik.nu/),
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24 originaly written by Ralph Meijer (http://ralphm.net/blog/)
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25 It is sublicensed under AGPL v3 (or any later version) as allowed by the original
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26 license.
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27
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28 --
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29
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30 Here is a copy of the original license:
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31
235
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32 Copyright (c) 2003-2011 Ralph Meijer
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34 Permission is hereby granted, free of charge, to any person obtaining
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35 a copy of this software and associated documentation files (the
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36 "Software"), to deal in the Software without restriction, including
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37 without limitation the rights to use, copy, modify, merge, publish,
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38 distribute, sublicense, and/or sell copies of the Software, and to
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39 permit persons to whom the Software is furnished to do so, subject to
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40 the following conditions:
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41
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42 The above copyright notice and this permission notice shall be
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43 included in all copies or substantial portions of the Software.
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44
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45 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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46 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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47 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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48 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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49 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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50 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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51 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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52
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53 """
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54
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55 import copy
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56 from zope.interface import implements
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57 from twisted.internet import defer
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58 from twisted.words.protocols.jabber import jid
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59
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60 from wokkel.pubsub import Subscription
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61
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62 from sat_pubsub import error, iidavoll
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63
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64 class Storage:
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65
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66 implements(iidavoll.IStorage)
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67
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68 defaultConfig = {
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69 'leaf': {
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70 "pubsub#persist_items": True,
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71 "pubsub#deliver_payloads": True,
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72 "pubsub#send_last_published_item": 'on_sub',
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73 },
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74 'collection': {
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75 "pubsub#deliver_payloads": True,
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76 "pubsub#send_last_published_item": 'on_sub',
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77 }
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78 }
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79
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80 def __init__(self):
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81 rootNode = CollectionNode('', jid.JID('localhost'),
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82 copy.copy(self.defaultConfig['collection']))
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83 self._nodes = {'': rootNode}
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84
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85
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86 def getNode(self, nodeIdentifier):
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87 try:
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88 node = self._nodes[nodeIdentifier]
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89 except KeyError:
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90 return defer.fail(error.NodeNotFound())
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91
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92 return defer.succeed(node)
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93
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94
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95 def getNodeIds(self):
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96 return defer.succeed(self._nodes.keys())
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97
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98
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99 def createNode(self, nodeIdentifier, owner, config):
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100 if nodeIdentifier in self._nodes:
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101 return defer.fail(error.NodeExists())
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102
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103 if config['pubsub#node_type'] != 'leaf':
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104 raise error.NoCollections()
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105
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106 node = LeafNode(nodeIdentifier, owner, config)
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107 self._nodes[nodeIdentifier] = node
107
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108
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109 return defer.succeed(None)
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110
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111
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112 def deleteNode(self, nodeIdentifier):
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113 try:
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114 del self._nodes[nodeIdentifier]
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115 except KeyError:
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116 return defer.fail(error.NodeNotFound())
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117
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118 return defer.succeed(None)
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119
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120
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121 def getAffiliations(self, entity):
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122 entity = entity.userhost()
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123 return defer.succeed([(node.nodeIdentifier, node._affiliations[entity])
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124 for name, node in self._nodes.iteritems()
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125 if entity in node._affiliations])
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126
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127
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128 def getSubscriptions(self, entity):
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129 subscriptions = []
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130 for node in self._nodes.itervalues():
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131 for subscriber, subscription in node._subscriptions.iteritems():
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132 subscriber = jid.internJID(subscriber)
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133 if subscriber.userhostJID() == entity.userhostJID():
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134 subscriptions.append(subscription)
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135
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136 return defer.succeed(subscriptions)
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137
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138
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139 def getDefaultConfiguration(self, nodeType):
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140 if nodeType == 'collection':
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141 raise error.NoCollections()
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142
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143 return self.defaultConfig[nodeType]
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144
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145
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146 class Node:
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147
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148 implements(iidavoll.INode)
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150 def __init__(self, nodeIdentifier, owner, config):
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151 self.nodeIdentifier = nodeIdentifier
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152 self._affiliations = {owner.userhost(): 'owner'}
107
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153 self._subscriptions = {}
221
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154 self._config = copy.copy(config)
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155
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156
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157 def getType(self):
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158 return self.nodeType
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159
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160
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161 def getConfiguration(self):
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162 return self._config
171
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163
198
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164
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165 def getMetaData(self):
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166 config = copy.copy(self._config)
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167 config["pubsub#node_type"] = self.nodeType
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168 return config
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169
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170
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171 def setConfiguration(self, options):
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172 for option in options:
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173 if option in self._config:
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174 self._config[option] = options[option]
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175
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176 return defer.succeed(None)
171
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177
198
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178
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179 def getAffiliation(self, entity):
226
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180 return defer.succeed(self._affiliations.get(entity.userhost()))
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181
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182
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183 def getSubscription(self, subscriber):
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184 try:
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185 subscription = self._subscriptions[subscriber.full()]
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186 except KeyError:
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187 return defer.succeed(None)
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188 else:
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189 return defer.succeed(subscription)
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190
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191
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192 def getSubscriptions(self, state=None):
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193 return defer.succeed(
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194 [subscription
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195 for subscription in self._subscriptions.itervalues()
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196 if state is None or subscription.state == state])
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197
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198
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199
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200 def addSubscription(self, subscriber, state, options):
120
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201 if self._subscriptions.get(subscriber.full()):
167
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
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202 return defer.fail(error.SubscriptionExists())
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203
206
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204 subscription = Subscription(self.nodeIdentifier, subscriber, state,
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205 options)
120
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206 self._subscriptions[subscriber.full()] = subscription
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207 return defer.succeed(None)
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208
198
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209
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210 def removeSubscription(self, subscriber):
120
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211 try:
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212 del self._subscriptions[subscriber.full()]
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213 except KeyError:
171
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214 return defer.fail(error.NotSubscribed())
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215
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216 return defer.succeed(None)
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217
198
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218
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219 def isSubscribed(self, entity):
146
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220 for subscriber, subscription in self._subscriptions.iteritems():
148
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221 if jid.internJID(subscriber).userhost() == entity.userhost() and \
146
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222 subscription.state == 'subscribed':
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223 return defer.succeed(True)
171
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224
146
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225 return defer.succeed(False)
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226
198
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227
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228 def getAffiliations(self):
148
b03e5ad81173 Change all calls to jid.JID to jid.internJID to avoid redoing stringprep.
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229 affiliations = [(jid.internJID(entity), affiliation) for entity, affiliation
145
f393bccec4bc Add get_affiliations to Node class in storage facilities in preparation of
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diff changeset
230 in self._affiliations.iteritems()]
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diff changeset
231
f393bccec4bc Add get_affiliations to Node class in storage facilities in preparation of
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232 return defer.succeed(affiliations)
f393bccec4bc Add get_affiliations to Node class in storage facilities in preparation of
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233
171
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234
198
e404775b12df Change naming and spacing conventions to match Twisted's.
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235
202
77c61e2b8c75 Use `domish.Element`s to represent items, instead of serialized XML.
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236 class PublishedItem(object):
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237 """
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238 A published item.
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239
77c61e2b8c75 Use `domish.Element`s to represent items, instead of serialized XML.
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240 This represent an item as it was published by an entity.
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241
77c61e2b8c75 Use `domish.Element`s to represent items, instead of serialized XML.
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diff changeset
242 @ivar element: The DOM representation of the item that was published.
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243 @type element: L{Element<twisted.words.xish.domish.Element>}
77c61e2b8c75 Use `domish.Element`s to represent items, instead of serialized XML.
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diff changeset
244 @ivar publisher: The entity that published the item.
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diff changeset
245 @type publisher: L{JID<twisted.words.protocols.jabber.jid.JID>}
77c61e2b8c75 Use `domish.Element`s to represent items, instead of serialized XML.
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diff changeset
246 """
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diff changeset
247
77c61e2b8c75 Use `domish.Element`s to represent items, instead of serialized XML.
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248 def __init__(self, element, publisher):
77c61e2b8c75 Use `domish.Element`s to represent items, instead of serialized XML.
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249 self.element = element
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250 self.publisher = publisher
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diff changeset
251
77c61e2b8c75 Use `domish.Element`s to represent items, instead of serialized XML.
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diff changeset
252
77c61e2b8c75 Use `domish.Element`s to represent items, instead of serialized XML.
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253
206
274a45d2a5ab Implement root collection that includes all leaf nodes.
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diff changeset
254 class LeafNode(Node):
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255
274a45d2a5ab Implement root collection that includes all leaf nodes.
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diff changeset
256 implements(iidavoll.ILeafNode)
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257
198
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diff changeset
258 nodeType = 'leaf'
107
d252d793f0ed Initial revision.
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259
206
274a45d2a5ab Implement root collection that includes all leaf nodes.
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260 def __init__(self, nodeIdentifier, owner, config):
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261 Node.__init__(self, nodeIdentifier, owner, config)
107
d252d793f0ed Initial revision.
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262 self._items = {}
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263 self._itemlist = []
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264
198
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diff changeset
265
e404775b12df Change naming and spacing conventions to match Twisted's.
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diff changeset
266 def storeItems(self, items, publisher):
202
77c61e2b8c75 Use `domish.Element`s to represent items, instead of serialized XML.
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diff changeset
267 for element in items:
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diff changeset
268 item = PublishedItem(element, publisher)
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diff changeset
269 itemIdentifier = element["id"]
198
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270 if itemIdentifier in self._items:
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271 self._itemlist.remove(self._items[itemIdentifier])
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272 self._items[itemIdentifier] = item
107
d252d793f0ed Initial revision.
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273 self._itemlist.append(item)
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274
d252d793f0ed Initial revision.
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275 return defer.succeed(None)
d252d793f0ed Initial revision.
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276
198
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diff changeset
277
e404775b12df Change naming and spacing conventions to match Twisted's.
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diff changeset
278 def removeItems(self, itemIdentifiers):
107
d252d793f0ed Initial revision.
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279 deleted = []
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280
198
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diff changeset
281 for itemIdentifier in itemIdentifiers:
142
812300cdbc22 Changed behaviour of retraction of items so that only the actually deleted
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parents: 139
diff changeset
282 try:
198
e404775b12df Change naming and spacing conventions to match Twisted's.
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diff changeset
283 item = self._items[itemIdentifier]
142
812300cdbc22 Changed behaviour of retraction of items so that only the actually deleted
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parents: 139
diff changeset
284 except KeyError:
812300cdbc22 Changed behaviour of retraction of items so that only the actually deleted
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parents: 139
diff changeset
285 pass
812300cdbc22 Changed behaviour of retraction of items so that only the actually deleted
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parents: 139
diff changeset
286 else:
812300cdbc22 Changed behaviour of retraction of items so that only the actually deleted
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diff changeset
287 self._itemlist.remove(item)
198
e404775b12df Change naming and spacing conventions to match Twisted's.
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diff changeset
288 del self._items[itemIdentifier]
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diff changeset
289 deleted.append(itemIdentifier)
171
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parents: 167
diff changeset
290
142
812300cdbc22 Changed behaviour of retraction of items so that only the actually deleted
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diff changeset
291 return defer.succeed(deleted)
107
d252d793f0ed Initial revision.
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parents:
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292
198
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diff changeset
293
e404775b12df Change naming and spacing conventions to match Twisted's.
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diff changeset
294 def getItems(self, maxItems=None):
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diff changeset
295 if maxItems:
202
77c61e2b8c75 Use `domish.Element`s to represent items, instead of serialized XML.
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diff changeset
296 itemList = self._itemlist[-maxItems:]
107
d252d793f0ed Initial revision.
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parents:
diff changeset
297 else:
202
77c61e2b8c75 Use `domish.Element`s to represent items, instead of serialized XML.
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diff changeset
298 itemList = self._itemlist
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diff changeset
299 return defer.succeed([item.element for item in itemList])
171
bc269696ef42 Reply with the correct error condition on subscription when not subscribed.
Ralph Meijer <ralphm@ik.nu>
parents: 167
diff changeset
300
198
e404775b12df Change naming and spacing conventions to match Twisted's.
Ralph Meijer <ralphm@ik.nu>
parents: 180
diff changeset
301
e404775b12df Change naming and spacing conventions to match Twisted's.
Ralph Meijer <ralphm@ik.nu>
parents: 180
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302 def getItemsById(self, itemIdentifiers):
107
d252d793f0ed Initial revision.
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parents:
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303 items = []
198
e404775b12df Change naming and spacing conventions to match Twisted's.
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parents: 180
diff changeset
304 for itemIdentifier in itemIdentifiers:
107
d252d793f0ed Initial revision.
Ralph Meijer <ralphm@ik.nu>
parents:
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305 try:
198
e404775b12df Change naming and spacing conventions to match Twisted's.
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parents: 180
diff changeset
306 item = self._items[itemIdentifier]
107
d252d793f0ed Initial revision.
Ralph Meijer <ralphm@ik.nu>
parents:
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307 except KeyError:
d252d793f0ed Initial revision.
Ralph Meijer <ralphm@ik.nu>
parents:
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308 pass
d252d793f0ed Initial revision.
Ralph Meijer <ralphm@ik.nu>
parents:
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309 else:
202
77c61e2b8c75 Use `domish.Element`s to represent items, instead of serialized XML.
Ralph Meijer <ralphm@ik.nu>
parents: 198
diff changeset
310 items.append(item.element)
107
d252d793f0ed Initial revision.
Ralph Meijer <ralphm@ik.nu>
parents:
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311 return defer.succeed(items)
d252d793f0ed Initial revision.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
312
198
e404775b12df Change naming and spacing conventions to match Twisted's.
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parents: 180
diff changeset
313
107
d252d793f0ed Initial revision.
Ralph Meijer <ralphm@ik.nu>
parents:
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314 def purge(self):
d252d793f0ed Initial revision.
Ralph Meijer <ralphm@ik.nu>
parents:
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315 self._items = {}
d252d793f0ed Initial revision.
Ralph Meijer <ralphm@ik.nu>
parents:
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316 self._itemlist = []
d252d793f0ed Initial revision.
Ralph Meijer <ralphm@ik.nu>
parents:
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317
d252d793f0ed Initial revision.
Ralph Meijer <ralphm@ik.nu>
parents:
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318 return defer.succeed(None)
d252d793f0ed Initial revision.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
319
171
bc269696ef42 Reply with the correct error condition on subscription when not subscribed.
Ralph Meijer <ralphm@ik.nu>
parents: 167
diff changeset
320
206
274a45d2a5ab Implement root collection that includes all leaf nodes.
Ralph Meijer <ralphm@ik.nu>
parents: 204
diff changeset
321 class CollectionNode(Node):
274a45d2a5ab Implement root collection that includes all leaf nodes.
Ralph Meijer <ralphm@ik.nu>
parents: 204
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322 nodeType = 'collection'
204
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
323
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
324
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
325
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
326 class GatewayStorage(object):
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Ralph Meijer <ralphm@ik.nu>
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327 """
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Ralph Meijer <ralphm@ik.nu>
parents: 202
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328 Memory based storage facility for the XMPP-HTTP gateway.
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
329 """
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
330
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
331 def __init__(self):
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Ralph Meijer <ralphm@ik.nu>
parents: 202
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332 self.callbacks = {}
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
333
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
334
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
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335 def addCallback(self, service, nodeIdentifier, callback):
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Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
336 try:
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
337 callbacks = self.callbacks[service, nodeIdentifier]
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
338 except KeyError:
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
339 callbacks = set([callback])
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
340 self.callbacks[service, nodeIdentifier] = callbacks
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
341 else:
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Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
342 callbacks.add(callback)
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
343 pass
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
344
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
345 return defer.succeed(None)
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
346
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
347
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
348 def removeCallback(self, service, nodeIdentifier, callback):
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Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
349 try:
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
350 callbacks = self.callbacks[service, nodeIdentifier]
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
351 callbacks.remove(callback)
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
352 except KeyError:
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
353 return defer.fail(error.NotSubscribed())
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
354 else:
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
355 if not callbacks:
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
356 del self.callbacks[service, nodeIdentifier]
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
357
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
358 return defer.succeed(not callbacks)
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
359
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
360
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
361 def getCallbacks(self, service, nodeIdentifier):
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
362 try:
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
363 callbacks = self.callbacks[service, nodeIdentifier]
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
364 except KeyError:
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
365 return defer.fail(error.NoCallbacks())
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
366 else:
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
367 return defer.succeed(callbacks)
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
368
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
369
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
370 def hasCallbacks(self, service, nodeIdentifier):
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 202
diff changeset
371 return defer.succeed((service, nodeIdentifier) in self.callbacks)