annotate sat_pubsub/iidavoll.py @ 311:a776544d84e5

copyright update
author Goffi <goffi@goffi.org>
date Sun, 03 Jan 2016 18:28:34 +0100
parents 002c59dbc23f
children 5d7c3787672e
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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 """
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5 Copyright (c) 2003-2011 Ralph Meijer
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a776544d84e5 copyright update
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6 Copyright (c) 2012-2016 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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33
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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 """
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56 Interfaces for idavoll.
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57 """
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58
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59 from zope.interface import Attribute, Interface
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60
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61 class IBackendService(Interface):
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62 """ Interface to a backend service of a pubsub service. """
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63
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64
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65 def __init__(storage):
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66 """
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67 @param storage: Object providing L{IStorage}.
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68 """
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70
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71 def supportsPublisherAffiliation():
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72 """ Reports if the backend supports the publisher affiliation.
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73
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74 @rtype: C{bool}
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75 """
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76
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77
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78 def supportsOutcastAffiliation():
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79 """ Reports if the backend supports the publisher affiliation.
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80
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81 @rtype: C{bool}
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82 """
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83
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84
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85 def supportsPersistentItems():
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86 """ Reports if the backend supports persistent items.
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87
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88 @rtype: C{bool}
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89 """
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91
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92 def getNodeType(nodeIdentifier):
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93 """ Return type of a node.
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94
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95 @return: a deferred that returns either 'leaf' or 'collection'
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96 """
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98
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99 def getNodes():
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100 """ Returns list of all nodes.
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101
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102 @return: a deferred that returns a C{list} of node ids.
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103 """
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104
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105
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106 def getNodeMetaData(nodeIdentifier):
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107 """ Return meta data for a node.
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108
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109 @return: a deferred that returns a C{list} of C{dict}s with the
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110 metadata.
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111 """
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112
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113
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114 def createNode(nodeIdentifier, requestor):
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115 """ Create a node.
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116
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117 @return: a deferred that fires when the node has been created.
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118 """
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119
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120
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121 def registerPreDelete(preDeleteFn):
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122 """ Register a callback that is called just before a node deletion.
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123
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124 The function C{preDeletedFn} is added to a list of functions to be
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125 called just before deletion of a node. The callback C{preDeleteFn} is
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126 called with the C{nodeIdentifier} that is about to be deleted and
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127 should return a deferred that returns a list of deferreds that are to
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128 be fired after deletion. The backend collects the lists from all these
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129 callbacks before actually deleting the node in question. After
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130 deletion all collected deferreds are fired to do post-processing.
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131
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132 The idea is that you want to be able to collect data from the node
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133 before deleting it, for example to get a list of subscribers that have
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134 to be notified after the node has been deleted. To do this,
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135 C{preDeleteFn} fetches the subscriber list and passes this list to a
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136 callback attached to a deferred that it sets up. This deferred is
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137 returned in the list of deferreds.
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138 """
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141 def deleteNode(nodeIdentifier, requestor):
167
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142 """ Delete a node.
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143
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144 @return: a deferred that fires when the node has been deleted.
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145 """
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146
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147
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148 def purgeNode(nodeIdentifier, requestor):
167
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149 """ Removes all items in node from persistent storage """
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150
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151
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152 def subscribe(nodeIdentifier, subscriber, requestor):
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153 """ Request the subscription of an entity to a pubsub node.
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154
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155 Depending on the node's configuration and possible business rules, the
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156 C{subscriber} is added to the list of subscriptions of the node with id
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157 C{nodeIdentifier}. The C{subscriber} might be different from the
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158 C{requestor}, and if the C{requestor} is not allowed to subscribe this
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159 entity an exception should be raised.
167
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160
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161 @return: a deferred that returns the subscription state
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162 """
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163
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164
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165 def unsubscribe(nodeIdentifier, subscriber, requestor):
167
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166 """ Cancel the subscription of an entity to a pubsub node.
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167
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168 The subscription of C{subscriber} is removed from the list of
198
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169 subscriptions of the node with id C{nodeIdentifier}. If the
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170 C{requestor} is not allowed to unsubscribe C{subscriber}, an an
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171 exception should be raised.
167
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172
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173 @return: a deferred that fires when unsubscription is complete.
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174 """
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175
198
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176
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177 def getSubscribers(nodeIdentifier):
167
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178 """ Get node subscriber list.
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179
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180 @return: a deferred that fires with the list of subscribers.
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181 """
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182
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183
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184 def getSubscriptions(entity):
167
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185 """ Report the list of current subscriptions with this pubsub service.
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186
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187 Report the list of the current subscriptions with all nodes within this
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188 pubsub service, for the C{entity}.
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189
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190 @return: a deferred that returns the list of all current subscriptions
198
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191 as tuples C{(nodeIdentifier, subscriber, subscription)}.
167
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192 """
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193
198
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194
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195 def getAffiliations(entity):
167
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196 """ Report the list of current affiliations with this pubsub service.
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197
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198 Report the list of the current affiliations with all nodes within this
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199 pubsub service, for the C{entity}.
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200
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201 @return: a deferred that returns the list of all current affiliations
198
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202 as tuples C{(nodeIdentifier, affiliation)}.
167
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203 """
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204
198
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205
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206 def publish(nodeIdentifier, items, requestor):
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207 """ Publish items to a pubsub node.
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208
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209 @return: a deferred that fires when the items have been published.
173
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210 @rtype: L{Deferred<twisted.internet.defer.Deferred>}
167
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211 """
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212
198
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213
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214 def registerNotifier(observerfn, *args, **kwargs):
167
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215 """ Register callback which is called for notification. """
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216
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217
206
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218 def getNotifications(nodeIdentifier, items):
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219 """
206
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220 Get notification list.
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221
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222 This method is called to discover which entities should receive
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223 notifications for the given items that have just been published to the
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224 given node.
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225
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226 The notification list contains tuples (subscriber, subscriptions,
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227 items) to result in one notification per tuple: the given subscriptions
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228 yielded the given items to be notified to this subscriber. This
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229 structure is needed allow for letting the subscriber know which
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230 subscriptions yielded which notifications, while catering for
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231 collection nodes and content-based subscriptions.
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232
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233 To minimize the amount of notifications per entity, implementers
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234 should take care that if all items in C{items} were yielded
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235 by the same set of subscriptions, exactly one tuple is for this
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236 subscriber is returned, so that the subscriber would get exactly one
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237 notification. Alternatively, one tuple per subscription combination.
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238
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239 @param nodeIdentifier: The identifier of the node the items were
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240 published to.
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241 @type nodeIdentifier: C{unicode}.
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242 @param items: The list of published items as
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243 L{Element<twisted.words.xish.domish.Element>}s.
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244 @type items: C{list}
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245 @return: The notification list as tuples of
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246 (L{JID<twisted.words.protocols.jabber.jid.JID>},
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247 C{list} of L{Subscription<wokkel.pubsub.Subscription>},
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248 C{list} of L{Element<twisted.words.xish.domish.Element>}.
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249 @rtype: C{list}
167
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250 """
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251
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252
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253 def getItems(nodeIdentifier, requestor, maxItems=None, itemIdentifiers=[]):
167
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254 """ Retrieve items from persistent storage
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255
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256 If C{maxItems} is given, return the C{maxItems} last published
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257 items, else if C{itemIdentifiers} is not empty, return the items
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258 requested. If neither is given, return all items.
167
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259
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260 @return: a deferred that returns the requested items
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261 """
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262
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263
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264 def retractItem(nodeIdentifier, itemIdentifier, requestor):
167
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265 """ Removes item in node from persistent storage """
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266
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267
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268
167
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269 class IStorage(Interface):
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270 """
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271 Storage interface.
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272 """
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273
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274
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275 def getNode(nodeIdentifier):
167
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276 """
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277 Get Node.
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278
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279 @param nodeIdentifier: NodeID of the desired node.
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280 @type nodeIdentifier: C{str}
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281 @return: deferred that returns a L{INode} providing object.
167
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282 """
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283
198
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284
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285 def getNodeIds():
167
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286 """
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287 Return all NodeIDs.
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288
206
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289 @return: deferred that returns a list of NodeIDs (C{unicode}).
167
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290 """
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291
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292
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293 def createNode(nodeIdentifier, owner, config):
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294 """
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295 Create new node.
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296
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297 The implementation should make sure, the passed owner JID is stripped
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298 of the resource (e.g. using C{owner.userhostJID()}). The passed config
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299 is expected to have values for the fields returned by
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300 L{getDefaultConfiguration}, as well as a value for
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301 C{'pubsub#node_type'}.
167
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302
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303 @param nodeIdentifier: NodeID of the new node.
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304 @type nodeIdentifier: C{unicode}
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305 @param owner: JID of the new nodes's owner.
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306 @type owner: L{JID<twisted.words.protocols.jabber.jid.JID>}
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307 @param config: Node configuration.
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308 @type config: C{dict}
167
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309 @return: deferred that fires on creation.
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310 """
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311
198
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312
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313 def deleteNode(nodeIdentifier):
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314 """
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315 Delete a node.
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316
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317 @param nodeIdentifier: NodeID of the new node.
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318 @type nodeIdentifier: C{unicode}
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319 @return: deferred that fires on deletion.
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320 """
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321
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322
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323 def getAffiliations(entity):
167
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324 """
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325 Get all affiliations for entity.
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326
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327 The implementation should make sure, the passed owner JID is stripped
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328 of the resource (e.g. using C{owner.userhostJID()}).
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329
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330 @param entity: JID of the entity.
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331 @type entity: L{JID<twisted.words.protocols.jabber.jid.JID>}
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332 @return: deferred that returns a C{list} of tuples of the form
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333 C{(nodeIdentifier, affiliation)}, where C{nodeIdentifier} is
206
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334 of the type L{unicode} and C{affiliation} is one of
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335 C{'owner'}, C{'publisher'} and C{'outcast'}.
167
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336 """
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337
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338
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339 def getSubscriptions(entity):
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340 """
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341 Get all subscriptions for an entity.
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342
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343 The implementation should make sure, the passed owner JID is stripped
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344 of the resource (e.g. using C{owner.userhostJID()}).
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345
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346 @param entity: JID of the entity.
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347 @type entity: L{JID<twisted.words.protocols.jabber.jid.JID>}
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348 @return: deferred that returns a C{list} of tuples of the form
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349 C{(nodeIdentifier, subscriber, state)}, where
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350 C{nodeIdentifier} is of the type C{unicode}, C{subscriber} of
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351 the type J{JID<twisted.words.protocols.jabber.jid.JID>}, and
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352 C{state} is C{'subscribed'}, C{'pending'} or
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353 C{'unconfigured'}.
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354 """
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355
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356
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357 def getDefaultConfiguration(nodeType):
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358 """
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359 Get the default configuration for the given node type.
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360
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361 @param nodeType: Either C{'leaf'} or C{'collection'}.
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362 @type nodeType: C{str}
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363 @return: The default configuration.
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364 @rtype: C{dict}.
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365 @raises: L{idavoll.error.NoCollections} if collections are not
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366 supported.
167
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367 """
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368
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369
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370
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371 class INode(Interface):
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372 """
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373 Interface to the class of objects that represent nodes.
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374 """
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375
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376 nodeType = Attribute("""The type of this node. One of {'leaf'},
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377 {'collection'}.""")
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378 nodeIdentifier = Attribute("""The node identifer of this node""")
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379
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380
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381 def getType():
167
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382 """
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383 Get node's type.
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384
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385 @return: C{'leaf'} or C{'collection'}.
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386 """
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387
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388
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389 def getConfiguration():
167
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390 """
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391 Get node's configuration.
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392
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393 The configuration must at least have two options:
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394 C{pubsub#persist_items}, and C{pubsub#deliver_payloads}.
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395
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396 @return: C{dict} of configuration options.
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397 """
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398
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399
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400 def getMetaData():
167
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401 """
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402 Get node's meta data.
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403
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404 The meta data must be a superset of the configuration options, and
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405 also at least should have a C{pubsub#node_type} entry.
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406
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407 @return: C{dict} of meta data.
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408 """
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409
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410
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411 def setConfiguration(options):
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412 """
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413 Set node's configuration.
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414
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415 The elements of {options} will set the new values for those
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
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416 configuration items. This means that only changing items have to
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
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parents:
diff changeset
417 be given.
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parents:
diff changeset
418
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parents:
diff changeset
419 @param options: a dictionary of configuration options.
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parents:
diff changeset
420 @returns: a deferred that fires upon success.
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Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
421 """
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parents:
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422
198
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diff changeset
423
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diff changeset
424 def getAffiliation(entity):
167
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425 """
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Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
426 Get affiliation of entity with this node.
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
427
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
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parents:
diff changeset
428 @param entity: JID of entity.
206
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diff changeset
429 @type entity: L{JID<twisted.words.protocols.jabber.jid.JID>}
167
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parents:
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430 @return: deferred that returns C{'owner'}, C{'publisher'}, C{'outcast'}
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Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
431 or C{None}.
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
432 """
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
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parents:
diff changeset
433
198
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diff changeset
434
e404775b12df Change naming and spacing conventions to match Twisted's.
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diff changeset
435 def getSubscription(subscriber):
167
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parents:
diff changeset
436 """
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Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
437 Get subscription to this node of subscriber.
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
438
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
439 @param subscriber: JID of the new subscriptions' entity.
206
274a45d2a5ab Implement root collection that includes all leaf nodes.
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diff changeset
440 @type subscriber: L{JID<twisted.words.protocols.jabber.jid.JID>}
167
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parents:
diff changeset
441 @return: deferred that returns the subscription state (C{'subscribed'},
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
442 C{'pending'} or C{None}).
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
443 """
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
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parents:
diff changeset
444
198
e404775b12df Change naming and spacing conventions to match Twisted's.
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parents: 189
diff changeset
445
206
274a45d2a5ab Implement root collection that includes all leaf nodes.
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diff changeset
446 def getSubscriptions(state=None):
274a45d2a5ab Implement root collection that includes all leaf nodes.
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parents: 204
diff changeset
447 """
274a45d2a5ab Implement root collection that includes all leaf nodes.
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parents: 204
diff changeset
448 Get list of subscriptions to this node.
274a45d2a5ab Implement root collection that includes all leaf nodes.
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parents: 204
diff changeset
449
274a45d2a5ab Implement root collection that includes all leaf nodes.
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diff changeset
450 The optional C{state} argument filters the subscriptions to their
274a45d2a5ab Implement root collection that includes all leaf nodes.
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parents: 204
diff changeset
451 state.
274a45d2a5ab Implement root collection that includes all leaf nodes.
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parents: 204
diff changeset
452
274a45d2a5ab Implement root collection that includes all leaf nodes.
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parents: 204
diff changeset
453 @param state: Subscription state filter. One of C{'subscribed'},
274a45d2a5ab Implement root collection that includes all leaf nodes.
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diff changeset
454 C{'pending'}, C{'unconfigured'}.
274a45d2a5ab Implement root collection that includes all leaf nodes.
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parents: 204
diff changeset
455 @type state: C{str}
274a45d2a5ab Implement root collection that includes all leaf nodes.
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parents: 204
diff changeset
456 @return: a deferred that returns a C{list} of
274a45d2a5ab Implement root collection that includes all leaf nodes.
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parents: 204
diff changeset
457 L{wokkel.pubsub.Subscription}s.
274a45d2a5ab Implement root collection that includes all leaf nodes.
Ralph Meijer <ralphm@ik.nu>
parents: 204
diff changeset
458 """
274a45d2a5ab Implement root collection that includes all leaf nodes.
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parents: 204
diff changeset
459
274a45d2a5ab Implement root collection that includes all leaf nodes.
Ralph Meijer <ralphm@ik.nu>
parents: 204
diff changeset
460
274a45d2a5ab Implement root collection that includes all leaf nodes.
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diff changeset
461 def addSubscription(subscriber, state, config):
167
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parents:
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462 """
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
463 Add new subscription to this node with given state.
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
464
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
465 @param subscriber: JID of the new subscriptions' entity.
206
274a45d2a5ab Implement root collection that includes all leaf nodes.
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diff changeset
466 @type subscriber: L{JID<twisted.words.protocols.jabber.jid.JID>}
167
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
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parents:
diff changeset
467 @param state: C{'subscribed'} or C{'pending'}
206
274a45d2a5ab Implement root collection that includes all leaf nodes.
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diff changeset
468 @type state: C{str}
274a45d2a5ab Implement root collection that includes all leaf nodes.
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parents: 204
diff changeset
469 @param config: Subscription configuration.
274a45d2a5ab Implement root collection that includes all leaf nodes.
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diff changeset
470 @param config: C{dict}
167
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
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parents:
diff changeset
471 @return: deferred that fires on subscription.
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
472 """
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
473
198
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diff changeset
474
e404775b12df Change naming and spacing conventions to match Twisted's.
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parents: 189
diff changeset
475 def removeSubscription(subscriber):
167
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parents:
diff changeset
476 """
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
477 Remove subscription to this node.
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
478
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
479 @param subscriber: JID of the subscriptions' entity.
206
274a45d2a5ab Implement root collection that includes all leaf nodes.
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diff changeset
480 @type subscriber: L{JID<twisted.words.protocols.jabber.jid.JID>}
167
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parents:
diff changeset
481 @return: deferred that fires on removal.
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
482 """
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
483
198
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parents: 189
diff changeset
484
e404775b12df Change naming and spacing conventions to match Twisted's.
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diff changeset
485 def isSubscribed(entity):
167
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parents:
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486 """
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Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
487 Returns whether entity has any subscription to this node.
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
488
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Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
489 Only returns C{True} when the subscription state (if present) is
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
490 C{'subscribed'} for any subscription that matches the bare JID.
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Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
491
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
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diff changeset
492 @param subscriber: bare JID of the subscriptions' entity.
206
274a45d2a5ab Implement root collection that includes all leaf nodes.
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diff changeset
493 @type subscriber: L{JID<twisted.words.protocols.jabber.jid.JID>}
274a45d2a5ab Implement root collection that includes all leaf nodes.
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parents: 204
diff changeset
494 @return: deferred that returns a C{bool}.
167
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parents:
diff changeset
495 """
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
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parents:
diff changeset
496
198
e404775b12df Change naming and spacing conventions to match Twisted's.
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diff changeset
497
e404775b12df Change naming and spacing conventions to match Twisted's.
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diff changeset
498 def getAffiliations():
167
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Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
499 """
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
500 Get affiliations of entities with this node.
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
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parents:
diff changeset
501
206
274a45d2a5ab Implement root collection that includes all leaf nodes.
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diff changeset
502 @return: deferred that returns a C{list} of tuples (jid, affiliation),
274a45d2a5ab Implement root collection that includes all leaf nodes.
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parents: 204
diff changeset
503 where jid is a L(JID<twisted.words.protocols.jabber.jid.JID>)
274a45d2a5ab Implement root collection that includes all leaf nodes.
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parents: 204
diff changeset
504 and affiliation is one of C{'owner'},
167
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
505 C{'publisher'}, C{'outcast'}.
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
506 """
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
507
198
e404775b12df Change naming and spacing conventions to match Twisted's.
Ralph Meijer <ralphm@ik.nu>
parents: 189
diff changeset
508
e404775b12df Change naming and spacing conventions to match Twisted's.
Ralph Meijer <ralphm@ik.nu>
parents: 189
diff changeset
509
167
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
510 class ILeafNode(Interface):
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
511 """
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
512 Interface to the class of objects that represent leaf nodes.
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
513 """
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
514
198
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parents: 189
diff changeset
515 def storeItems(items, publisher):
167
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
516 """
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
517 Store items in persistent storage for later retrieval.
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
518
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
519 @param items: The list of items to be stored. Each item is the
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
520 L{domish} representation of the XML fragment as defined
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
521 for C{<item/>} in the
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
522 C{http://jabber.org/protocol/pubsub} namespace.
206
274a45d2a5ab Implement root collection that includes all leaf nodes.
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diff changeset
523 @type items: C{list} of {domish.Element}
167
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
524 @param publisher: JID of the publishing entity.
206
274a45d2a5ab Implement root collection that includes all leaf nodes.
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parents: 204
diff changeset
525 @type publisher: L{JID<twisted.words.protocols.jabber.jid.JID>}
167
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
526 @return: deferred that fires upon success.
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
527 """
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
528
198
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Ralph Meijer <ralphm@ik.nu>
parents: 189
diff changeset
529
e404775b12df Change naming and spacing conventions to match Twisted's.
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parents: 189
diff changeset
530 def removeItems(itemIdentifiers):
167
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
531 """
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
532 Remove items by id.
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
533
206
274a45d2a5ab Implement root collection that includes all leaf nodes.
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parents: 204
diff changeset
534 @param itemIdentifiers: C{list} of item ids.
274a45d2a5ab Implement root collection that includes all leaf nodes.
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parents: 204
diff changeset
535 @return: deferred that fires with a C{list} of ids of the items that
167
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
536 were deleted
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
537 """
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
538
198
e404775b12df Change naming and spacing conventions to match Twisted's.
Ralph Meijer <ralphm@ik.nu>
parents: 189
diff changeset
539
265
89493845d3dd fix the method signatures of iidavoll.ILeafNode and memory_storage.LeafNode according to pgsql_storage.LeafNode
souliane <souliane@mailoo.org>
parents: 263
diff changeset
540 def getItems(authorized_groups, unrestricted, maxItems=None):
89493845d3dd fix the method signatures of iidavoll.ILeafNode and memory_storage.LeafNode according to pgsql_storage.LeafNode
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parents: 263
diff changeset
541 """ Get all authorised items
89493845d3dd fix the method signatures of iidavoll.ILeafNode and memory_storage.LeafNode according to pgsql_storage.LeafNode
souliane <souliane@mailoo.org>
parents: 263
diff changeset
542 If C{maxItems} is not given, all authorised items in the node are returned,
198
e404775b12df Change naming and spacing conventions to match Twisted's.
Ralph Meijer <ralphm@ik.nu>
parents: 189
diff changeset
543 just like C{getItemsById}. Otherwise, C{maxItems} limits
167
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
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parents:
diff changeset
544 the returned items to a maximum of that number of most recently
265
89493845d3dd fix the method signatures of iidavoll.ILeafNode and memory_storage.LeafNode according to pgsql_storage.LeafNode
souliane <souliane@mailoo.org>
parents: 263
diff changeset
545 published and authorised items.
167
ef22e4150caa Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
546
265
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547 @param authorized_groups: we want to get items that these groups can access
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548 @param unrestricted: if true, don't check permissions (i.e.: get all items)
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549 @param maxItems: if given, a natural number (>0) that limits the
167
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550 returned number of items.
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551 @return: deferred that fires a C{list} of (item, access_model, id)
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552 if unrestricted is True, else a C{list} of items.
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553 """
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554
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555
278
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556 def countItems(authorized_groups, unrestricted):
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557 """ Count the accessible items.
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558
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559 @param authorized_groups: we want to get items that these groups can access.
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560 @param unrestricted: if true, don't check permissions (i.e.: get all items).
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561 @return: deferred that fires a C{int}.
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562 """
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563
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564
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565 def getIndex(authorized_groups, unrestricted, item):
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566 """ Retrieve the index of the given item within the accessible window.
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567
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568 @param authorized_groups: we want to get items that these groups can access.
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569 @param unrestricted: if true, don't check permissions (i.e.: get all items).
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570 @param item: item identifier.
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571 @return: deferred that fires a C{int}.
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572 """
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573
265
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574 def getItemsById(authorized_groups, unrestricted, itemIdentifiers):
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575 """
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576 Get items by item id.
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577
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578 Each item in the returned list is a unicode string that
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579 represent the XML of the item as it was published, including the
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580 item wrapper with item id.
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581
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582 @param authorized_groups: we want to get items that these groups can access
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583 @param unrestricted: if true, don't check permissions
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584 @param itemIdentifiers: C{list} of item ids.
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585 @return: deferred that fires a C{list} of (item, access_model, id)
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586 if unrestricted is True, else a C{list} of items.
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587 """
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588
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diff changeset
589
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590 def purge():
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parents:
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591 """
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parents:
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592 Purge node of all items in persistent storage.
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593
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594 @return: deferred that fires when the node has been purged.
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595 """
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596
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diff changeset
597
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598 def filterItemsWithPublisher(itemIdentifiers, requestor):
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599 """
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600 Filter the given items by checking the items publisher against the requestor.
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601
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diff changeset
602 @param itemIdentifiers: C{list} of item ids.
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diff changeset
603 @param requestor: JID of the requestor.
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604 @type requestor: L{JID<twisted.words.protocols.jabber.jid.JID>}
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605 @return: deferred that fires with a C{list} of item identifiers.
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parents: 255
diff changeset
606 """
204
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607
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608 class IGatewayStorage(Interface):
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609
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610 def addCallback(service, nodeIdentifier, callback):
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611 """
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612 Register a callback URI.
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613
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614 The registered HTTP callback URI will have an Atom Entry documented
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615 POSTed to it upon receiving a notification for the given pubsub node.
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616
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617 @param service: The XMPP entity that holds the node.
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618 @type service: L{JID<twisted.words.protocols.jabber.jid.JID>}
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619 @param nodeIdentifier: The identifier of the publish-subscribe node.
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620 @type nodeIdentifier: C{unicode}.
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621 @param callback: The callback URI to be registered.
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622 @type callback: C{str}.
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623 @rtype: L{Deferred<twisted.internet.defer.Deferred>}
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624 """
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625
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626 def removeCallback(service, nodeIdentifier, callback):
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627 """
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628 Remove a registered callback URI.
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629
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630 The returned deferred will fire with a boolean that signals wether or
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631 not this was the last callback unregistered for this node.
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632
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633 @param service: The XMPP entity that holds the node.
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634 @type service: L{JID<twisted.words.protocols.jabber.jid.JID>}
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635 @param nodeIdentifier: The identifier of the publish-subscribe node.
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636 @type nodeIdentifier: C{unicode}.
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637 @param callback: The callback URI to be unregistered.
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638 @type callback: C{str}.
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639 @rtype: L{Deferred<twisted.internet.defer.Deferred>}
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640 """
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641
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642 def getCallbacks(service, nodeIdentifier):
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643 """
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644 Get the callbacks registered for this node.
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645
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646 Returns a deferred that fires with the set of HTTP callback URIs
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647 registered for this node.
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648
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649 @param service: The XMPP entity that holds the node.
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650 @type service: L{JID<twisted.words.protocols.jabber.jid.JID>}
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651 @param nodeIdentifier: The identifier of the publish-subscribe node.
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652 @type nodeIdentifier: C{unicode}.
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653 @rtype: L{Deferred<twisted.internet.defer.Deferred>}
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654 """
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655
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656
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657 def hasCallbacks(service, nodeIdentifier):
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658 """
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659 Return wether there are callbacks registered for a node.
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diff changeset
660
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661 @param service: The XMPP entity that holds the node.
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662 @type service: L{JID<twisted.words.protocols.jabber.jid.JID>}
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663 @param nodeIdentifier: The identifier of the publish-subscribe node.
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664 @type nodeIdentifier: C{unicode}.
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665 @returns: Deferred that fires with a boolean.
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666 @rtype: L{Deferred<twisted.internet.defer.Deferred>}
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667 """