Mercurial > libervia-pubsub
annotate idavoll/backend.py @ 201:d829db6095d6
Make sure that item elements lose their namespace before storage, notification.
author | Ralph Meijer <ralphm@ik.nu> |
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date | Tue, 24 Jun 2008 08:42:16 +0000 |
parents | 2189c663ba44 |
children | 77c61e2b8c75 |
rev | line source |
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1 # -*- test-case-name: idavoll.test.test_backend -*- |
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2 # |
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3 # Copyright (c) 2003-2008 Ralph Meijer |
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4 # See LICENSE for details. |
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5 |
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6 """ |
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7 Generic publish-subscribe backend. |
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8 |
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9 This module implements a generic publish-subscribe backend service with |
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10 business logic as per |
200 | 11 U{XEP-0060<http://www.xmpp.org/extensions/xep-0060.html>} that interacts with |
198
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12 a given storage facility. It also provides an adapter from the XMPP |
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13 publish-subscribe protocol. |
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14 """ |
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15 |
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16 import uuid |
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17 |
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18 from zope.interface import implements |
2 | 19 |
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20 from twisted.application import service |
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21 from twisted.python import components |
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22 from twisted.internet import defer, reactor |
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23 from twisted.words.protocols.jabber.error import StanzaError |
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24 from twisted.words.xish import domish, utility |
1 | 25 |
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26 from wokkel.iwokkel import IDisco, IPubSubService |
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27 from wokkel.pubsub import PubSubService, PubSubError |
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28 |
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29 from idavoll import error, iidavoll |
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30 from idavoll.iidavoll import IBackendService |
15 | 31 |
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32 def _getAffiliation(node, entity): |
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33 d = node.getAffiliation(entity) |
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34 d.addCallback(lambda affiliation: (node, affiliation)) |
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35 return d |
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36 |
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37 |
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38 |
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39 class BackendService(service.Service, utility.EventDispatcher): |
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40 """ |
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41 Generic publish-subscribe backend service. |
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42 |
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43 @cvar options: Node configuration form as a mapping from the field |
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44 name to a dictionary that holds the field's type, |
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45 label and possible options to choose from. |
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46 @type options: C{dict}. |
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47 @cvar defaultConfig: The default node configuration. |
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48 """ |
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49 |
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50 implements(iidavoll.IBackendService) |
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51 |
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52 options = {"pubsub#persist_items": |
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53 {"type": "boolean", |
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54 "label": "Persist items to storage"}, |
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55 "pubsub#deliver_payloads": |
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56 {"type": "boolean", |
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57 "label": "Deliver payloads with event notifications"}, |
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58 "pubsub#send_last_published_item": |
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59 {"type": "list-single", |
181 | 60 "label": "When to send the last published item", |
61 "options": { | |
62 "never": "Never", | |
63 "on_sub": "When a new subscription is processed", | |
64 } | |
65 }, | |
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66 } |
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67 |
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68 defaultConfig = {"pubsub#persist_items": True, |
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69 "pubsub#deliver_payloads": True, |
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70 "pubsub#send_last_published_item": 'on_sub', |
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71 } |
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72 |
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73 def __init__(self, storage): |
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74 utility.EventDispatcher.__init__(self) |
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75 self.storage = storage |
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76 self._callbackList = [] |
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77 |
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78 |
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79 def supportsPublisherAffiliation(self): |
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80 return True |
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81 |
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82 |
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83 def supportsOutcastAffiliation(self): |
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84 return True |
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85 |
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86 |
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87 def supportsPersistentItems(self): |
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88 return True |
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89 |
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90 |
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91 def getNodeType(self, nodeIdentifier): |
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92 d = self.storage.getNode(nodeIdentifier) |
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93 d.addCallback(lambda node: node.getType()) |
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94 return d |
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95 |
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96 |
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97 def getNodes(self): |
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98 return self.storage.getNodeIds() |
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99 |
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100 |
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101 def getNodeMetaData(self, nodeIdentifier): |
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102 d = self.storage.getNode(nodeIdentifier) |
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103 d.addCallback(lambda node: node.getMetaData()) |
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104 d.addCallback(self._makeMetaData) |
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105 return d |
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106 |
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107 |
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108 def _makeMetaData(self, metaData): |
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109 options = [] |
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110 for key, value in metaData.iteritems(): |
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111 if self.options.has_key(key): |
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112 option = {"var": key} |
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113 option.update(self.options[key]) |
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114 option["value"] = value |
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115 options.append(option) |
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116 |
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117 return options |
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118 |
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119 |
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120 def _checkAuth(self, node, requestor): |
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121 def check(affiliation, node): |
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122 if affiliation not in ['owner', 'publisher']: |
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123 raise error.Forbidden() |
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124 return node |
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125 |
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126 d = node.getAffiliation(requestor) |
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127 d.addCallback(check, node) |
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128 return d |
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129 |
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130 |
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131 def publish(self, nodeIdentifier, items, requestor): |
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132 d = self.storage.getNode(nodeIdentifier) |
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133 d.addCallback(self._checkAuth, requestor) |
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134 d.addCallback(self._doPublish, items, requestor) |
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135 return d |
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136 |
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137 |
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138 def _doPublish(self, node, items, requestor): |
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139 configuration = node.getConfiguration() |
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140 persistItems = configuration["pubsub#persist_items"] |
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141 deliverPayloads = configuration["pubsub#deliver_payloads"] |
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142 |
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143 if items and not persistItems and not deliverPayloads: |
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144 raise error.ItemForbidden() |
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145 elif not items and (persistItems or deliverPayloads): |
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146 raise error.ItemRequired() |
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147 |
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148 if persistItems or deliverPayloads: |
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149 for item in items: |
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150 item.uri = None |
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151 item.defaultUri = None |
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152 if not item.getAttribute("id"): |
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153 item["id"] = str(uuid.uuid4()) |
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154 |
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155 if persistItems: |
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156 d = node.storeItems(items, requestor) |
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157 else: |
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158 d = defer.succeed(None) |
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159 |
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160 d.addCallback(self._doNotify, node.nodeIdentifier, items, |
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161 deliverPayloads) |
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162 return d |
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163 |
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164 |
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165 def _doNotify(self, result, nodeIdentifier, items, deliverPayloads): |
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166 if items and not deliverPayloads: |
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167 for item in items: |
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168 item.children = [] |
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169 |
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170 self.dispatch({'items': items, 'nodeIdentifier': nodeIdentifier}, |
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171 '//event/pubsub/notify') |
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172 |
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173 |
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174 def getNotificationList(self, nodeIdentifier, items): |
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175 d = self.storage.getNode(nodeIdentifier) |
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176 d.addCallback(lambda node: node.getSubscribers()) |
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177 d.addCallback(self._magicFilter, nodeIdentifier, items) |
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178 return d |
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179 |
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180 |
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181 def _magicFilter(self, subscribers, nodeIdentifier, items): |
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182 list = [] |
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183 for subscriber in subscribers: |
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184 list.append((subscriber, items)) |
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185 return list |
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186 |
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187 |
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188 def registerNotifier(self, observerfn, *args, **kwargs): |
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189 self.addObserver('//event/pubsub/notify', observerfn, *args, **kwargs) |
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190 |
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191 |
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192 def subscribe(self, nodeIdentifier, subscriber, requestor): |
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193 subscriberEntity = subscriber.userhostJID() |
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194 if subscriberEntity != requestor: |
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195 return defer.fail(error.Forbidden()) |
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196 |
198
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197 d = self.storage.getNode(nodeIdentifier) |
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198 d.addCallback(_getAffiliation, subscriberEntity) |
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199 d.addCallback(self._doSubscribe, subscriber) |
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200 return d |
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201 |
198
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202 |
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203 def _doSubscribe(self, result, subscriber): |
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204 node, affiliation = result |
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205 |
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206 if affiliation == 'outcast': |
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207 raise error.Forbidden() |
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208 |
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209 d = node.addSubscription(subscriber, 'subscribed') |
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210 d.addCallback(lambda _: self._sendLastPublished(node, subscriber)) |
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211 d.addCallback(lambda _: 'subscribed') |
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212 d.addErrback(self._getSubscription, node, subscriber) |
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213 d.addCallback(self._returnSubscription, node.nodeIdentifier) |
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214 return d |
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215 |
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216 |
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217 def _getSubscription(self, failure, node, subscriber): |
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218 failure.trap(error.SubscriptionExists) |
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219 return node.getSubscription(subscriber) |
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220 |
167
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221 |
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222 def _returnSubscription(self, result, nodeIdentifier): |
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223 return nodeIdentifier, result |
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224 |
198
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225 |
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226 def _sendLastPublished(self, node, subscriber): |
183
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227 class StringParser(object): |
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228 def __init__(self): |
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229 self.elementStream = domish.elementStream() |
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230 self.elementStream.DocumentStartEvent = self.docStart |
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231 self.elementStream.ElementEvent = self.elem |
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232 self.elementStream.DocumentEndEvent = self.docEnd |
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233 |
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234 def docStart(self, elem): |
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235 self.document = elem |
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236 |
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237 def elem(self, elem): |
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238 self.document.addChild(elem) |
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239 |
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240 def docEnd(self): |
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241 pass |
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242 |
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243 def parse(self, string): |
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244 self.elementStream.parse(string) |
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245 return self.document |
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246 |
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247 def notifyItem(result): |
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248 if not result: |
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249 return |
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250 |
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251 items = [domish.SerializedXML(item) for item in result] |
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252 |
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253 reactor.callLater(0, self.dispatch, |
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254 {'items': items, |
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255 'nodeIdentifier': node.nodeIdentifier, |
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256 'subscriber': subscriber}, |
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257 '//event/pubsub/notify') |
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258 |
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259 config = node.getConfiguration() |
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260 if config.get("pubsub#send_last_published_item", 'never') != 'on_sub': |
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261 return |
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262 |
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263 d = self.getItems(node.nodeIdentifier, subscriber.userhostJID(), 1) |
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264 d.addCallback(notifyItem) |
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265 |
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266 |
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267 def unsubscribe(self, nodeIdentifier, subscriber, requestor): |
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268 if subscriber.userhostJID() != requestor: |
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269 return defer.fail(error.Forbidden()) |
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270 |
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271 d = self.storage.getNode(nodeIdentifier) |
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272 d.addCallback(lambda node: node.removeSubscription(subscriber)) |
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273 return d |
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274 |
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275 |
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276 def getSubscriptions(self, entity): |
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277 return self.storage.getSubscriptions(entity) |
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278 |
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279 |
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280 def supportsInstantNodes(self): |
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281 return True |
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282 |
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283 |
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284 def createNode(self, nodeIdentifier, requestor): |
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285 if not nodeIdentifier: |
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286 nodeIdentifier = 'generic/%s' % uuid.uuid4() |
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287 d = self.storage.createNode(nodeIdentifier, requestor) |
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288 d.addCallback(lambda _: nodeIdentifier) |
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289 return d |
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290 |
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291 |
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292 def getDefaultConfiguration(self): |
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293 d = defer.succeed(self.defaultConfig) |
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294 d.addCallback(self._makeConfig) |
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295 return d |
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296 |
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297 |
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298 def getNodeConfiguration(self, nodeIdentifier): |
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299 if not nodeIdentifier: |
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300 return defer.fail(error.NoRootNode()) |
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301 |
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302 d = self.storage.getNode(nodeIdentifier) |
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303 d.addCallback(lambda node: node.getConfiguration()) |
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304 |
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305 d.addCallback(self._makeConfig) |
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306 return d |
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307 |
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308 |
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309 def _makeConfig(self, config): |
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310 options = [] |
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311 for key, value in self.options.iteritems(): |
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312 option = {"var": key} |
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313 option.update(value) |
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314 if config.has_key(key): |
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315 option["value"] = config[key] |
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316 options.append(option) |
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317 |
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318 return options |
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319 |
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320 |
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321 def setNodeConfiguration(self, nodeIdentifier, options, requestor): |
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322 if not nodeIdentifier: |
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323 return defer.fail(error.NoRootNode()) |
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324 |
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325 for key, value in options.iteritems(): |
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326 if not self.options.has_key(key): |
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327 return defer.fail(error.InvalidConfigurationOption()) |
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328 if self.options[key]["type"] == 'boolean': |
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329 try: |
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330 options[key] = bool(int(value)) |
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331 except ValueError: |
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332 return defer.fail(error.InvalidConfigurationValue()) |
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333 |
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334 d = self.storage.getNode(nodeIdentifier) |
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335 d.addCallback(_getAffiliation, requestor) |
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336 d.addCallback(self._doSetNodeConfiguration, options) |
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337 return d |
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338 |
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339 |
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340 def _doSetNodeConfiguration(self, result, options): |
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341 node, affiliation = result |
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342 |
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343 if affiliation != 'owner': |
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344 raise error.Forbidden() |
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345 |
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346 return node.setConfiguration(options) |
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347 |
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348 |
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349 def getAffiliations(self, entity): |
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350 return self.storage.getAffiliations(entity) |
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351 |
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352 |
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353 def getItems(self, nodeIdentifier, requestor, maxItems=None, |
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354 itemIdentifiers=None): |
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355 d = self.storage.getNode(nodeIdentifier) |
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356 d.addCallback(_getAffiliation, requestor) |
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357 d.addCallback(self._doGetItems, maxItems, itemIdentifiers) |
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358 return d |
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359 |
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360 |
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361 def _doGetItems(self, result, maxItems, itemIdentifiers): |
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362 node, affiliation = result |
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363 |
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364 if affiliation == 'outcast': |
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365 raise error.Forbidden() |
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366 |
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367 if itemIdentifiers: |
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368 return node.getItemsById(itemIdentifiers) |
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369 else: |
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370 return node.getItems(maxItems) |
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371 |
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372 |
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373 def retractItem(self, nodeIdentifier, itemIdentifiers, requestor): |
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374 d = self.storage.getNode(nodeIdentifier) |
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375 d.addCallback(_getAffiliation, requestor) |
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376 d.addCallback(self._doRetract, itemIdentifiers) |
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377 return d |
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378 |
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379 |
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380 def _doRetract(self, result, itemIdentifiers): |
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381 node, affiliation = result |
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382 persistItems = node.getConfiguration()["pubsub#persist_items"] |
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383 |
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384 if affiliation not in ['owner', 'publisher']: |
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385 raise error.Forbidden() |
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386 |
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387 if not persistItems: |
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388 raise error.NodeNotPersistent() |
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389 |
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390 d = node.removeItems(itemIdentifiers) |
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391 d.addCallback(self._doNotifyRetraction, node.nodeIdentifier) |
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392 return d |
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393 |
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394 |
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395 def _doNotifyRetraction(self, itemIdentifiers, nodeIdentifier): |
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396 self.dispatch({'itemIdentifiers': itemIdentifiers, |
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397 'nodeIdentifier': nodeIdentifier }, |
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398 '//event/pubsub/retract') |
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399 |
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400 |
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401 def purgeNode(self, nodeIdentifier, requestor): |
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402 d = self.storage.getNode(nodeIdentifier) |
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403 d.addCallback(_getAffiliation, requestor) |
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404 d.addCallback(self._doPurge) |
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405 return d |
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406 |
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407 |
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408 def _doPurge(self, result): |
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409 node, affiliation = result |
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410 persistItems = node.getConfiguration()["pubsub#persist_items"] |
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411 |
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412 if affiliation != 'owner': |
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413 raise error.Forbidden() |
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414 |
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415 if not persistItems: |
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416 raise error.NodeNotPersistent() |
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417 |
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418 d = node.purge() |
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419 d.addCallback(self._doNotifyPurge, node.nodeIdentifier) |
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420 return d |
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421 |
198
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422 |
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423 def _doNotifyPurge(self, result, nodeIdentifier): |
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424 self.dispatch(nodeIdentifier, '//event/pubsub/purge') |
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425 |
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426 |
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427 def registerPreDelete(self, preDeleteFn): |
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428 self._callbackList.append(preDeleteFn) |
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429 |
167
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430 |
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431 def getSubscribers(self, nodeIdentifier): |
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432 d = self.storage.getNode(nodeIdentifier) |
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433 d.addCallback(lambda node: node.getSubscribers()) |
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434 return d |
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435 |
198
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436 |
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437 def deleteNode(self, nodeIdentifier, requestor): |
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438 d = self.storage.getNode(nodeIdentifier) |
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439 d.addCallback(_getAffiliation, requestor) |
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440 d.addCallback(self._doPreDelete) |
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441 return d |
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442 |
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443 |
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444 def _doPreDelete(self, result): |
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445 node, affiliation = result |
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446 |
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447 if affiliation != 'owner': |
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448 raise error.Forbidden() |
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449 |
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450 d = defer.DeferredList([cb(node.nodeIdentifier) |
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451 for cb in self._callbackList], |
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452 consumeErrors=1) |
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453 d.addCallback(self._doDelete, node.nodeIdentifier) |
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454 |
198
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455 |
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456 def _doDelete(self, result, nodeIdentifier): |
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457 dl = [] |
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458 for succeeded, r in result: |
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459 if succeeded and r: |
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460 dl.extend(r) |
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461 |
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462 d = self.storage.deleteNode(nodeIdentifier) |
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463 d.addCallback(self._doNotifyDelete, dl) |
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464 |
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465 return d |
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466 |
198
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467 |
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468 def _doNotifyDelete(self, result, dl): |
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469 for d in dl: |
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470 d.callback(None) |
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471 |
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472 |
198
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473 |
167
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474 class PubSubServiceFromBackend(PubSubService): |
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475 """ |
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476 Adapts a backend to an xmpp publish-subscribe service. |
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477 """ |
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478 |
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479 implements(IDisco) |
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480 |
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481 _errorMap = { |
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482 error.NodeNotFound: ('item-not-found', None, None), |
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483 error.NodeExists: ('conflict', None, None), |
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484 error.Forbidden: ('forbidden', None, None), |
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485 error.ItemForbidden: ('bad-request', 'item-forbidden', None), |
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486 error.ItemRequired: ('bad-request', 'item-required', None), |
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487 error.NoInstantNodes: ('not-acceptable', |
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488 'unsupported', |
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489 'instant-nodes'), |
171
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490 error.NotSubscribed: ('unexpected-request', 'not-subscribed', None), |
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491 error.InvalidConfigurationOption: ('not-acceptable', None, None), |
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492 error.InvalidConfigurationValue: ('not-acceptable', None, None), |
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493 error.NodeNotPersistent: ('feature-not-implemented', |
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494 'unsupported', |
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495 'persistent-node'), |
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496 error.NoRootNode: ('bad-request', None, None), |
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497 } |
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498 |
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499 def __init__(self, backend): |
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500 PubSubService.__init__(self) |
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501 |
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502 self.backend = backend |
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503 self.hideNodes = False |
153 | 504 |
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505 self.pubSubFeatures = self._getPubSubFeatures() |
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506 |
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507 self.backend.registerNotifier(self._notify) |
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508 self.backend.registerPreDelete(self._preDelete) |
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509 |
153 | 510 |
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511 def _getPubSubFeatures(self): |
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512 features = [ |
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513 "config-node", |
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514 "create-nodes", |
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515 "delete-any", |
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516 "delete-nodes", |
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517 "item-ids", |
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518 "meta-data", |
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519 "publish", |
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520 "purge-nodes", |
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521 "retract-items", |
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522 "retrieve-affiliations", |
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523 "retrieve-default", |
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524 "retrieve-items", |
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525 "retrieve-subscriptions", |
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526 "subscribe", |
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527 ] |
153 | 528 |
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529 if self.backend.supportsInstantNodes(): |
167
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530 features.append("instant-nodes") |
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531 |
198
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532 if self.backend.supportsOutcastAffiliation(): |
167
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533 features.append("outcast-affiliation") |
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534 |
198
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535 if self.backend.supportsPersistentItems(): |
167
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536 features.append("persistent-items") |
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537 |
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538 if self.backend.supportsPublisherAffiliation(): |
167
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539 features.append("publisher-affiliation") |
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540 |
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541 return features |
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|
542 |
198
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543 |
167
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544 def _notify(self, data): |
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545 items = data['items'] |
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546 nodeIdentifier = data['nodeIdentifier'] |
178
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|
547 if 'subscriber' not in data: |
198
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548 d = self.backend.getNotificationList(nodeIdentifier, items) |
178
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549 else: |
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550 d = defer.succeed([(data['subscriber'], items)]) |
167
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|
551 d.addCallback(lambda notifications: self.notifyPublish(self.serviceJID, |
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|
552 nodeIdentifier, |
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Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
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553 notifications)) |
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Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
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|
554 |
198
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Change naming and spacing conventions to match Twisted's.
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diff
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|
555 |
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Change naming and spacing conventions to match Twisted's.
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diff
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|
556 def _preDelete(self, nodeIdentifier): |
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Change naming and spacing conventions to match Twisted's.
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|
557 d = self.backend.getSubscribers(nodeIdentifier) |
174
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Send out node deletion notifications.
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diff
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|
558 d.addCallback(lambda subscribers: self.notifyDelete(self.serviceJID, |
79d451d186b1
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172
diff
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|
559 nodeIdentifier, |
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172
diff
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|
560 subscribers)) |
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diff
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|
561 return d |
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Send out node deletion notifications.
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diff
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|
562 |
198
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Change naming and spacing conventions to match Twisted's.
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196
diff
changeset
|
563 |
167
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|
564 def _mapErrors(self, failure): |
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Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
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|
565 e = failure.trap(*self._errorMap.keys()) |
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Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
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|
566 |
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|
567 condition, pubsubCondition, feature = self._errorMap[e] |
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568 msg = failure.value.msg |
29
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Define interfaces of blocks of functionality.
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24
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|
569 |
167
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Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
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|
570 if pubsubCondition: |
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Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
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|
571 exc = PubSubError(condition, pubsubCondition, feature, msg) |
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|
572 else: |
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|
573 exc = StanzaError(condition, text=msg) |
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Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
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|
574 |
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Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
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|
575 raise exc |
29
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24
diff
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|
576 |
198
e404775b12df
Change naming and spacing conventions to match Twisted's.
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196
diff
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|
577 |
167
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Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
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|
578 def getNodeInfo(self, requestor, service, nodeIdentifier): |
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Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
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|
579 info = {} |
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Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
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|
580 |
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Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
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|
581 def saveType(result): |
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Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
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|
582 info['type'] = result |
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|
583 return nodeIdentifier |
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Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
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|
584 |
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Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
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|
585 def saveMetaData(result): |
ef22e4150caa
Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
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|
586 info['meta-data'] = result |
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Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
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|
587 return info |
29
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Define interfaces of blocks of functionality.
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diff
changeset
|
588 |
167
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|
589 d = defer.succeed(nodeIdentifier) |
198
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Change naming and spacing conventions to match Twisted's.
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|
590 d.addCallback(self.backend.getNodeType) |
167
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Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
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|
591 d.addCallback(saveType) |
198
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Change naming and spacing conventions to match Twisted's.
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|
592 d.addCallback(self.backend.getNodeMetaData) |
167
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Move protocol implementations (pubsub, disco, forms) to and depend on wokkel.
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|
593 d.addCallback(saveMetaData) |
172
9bfb00edd0cc
Fix Backend's getNodeInfo so that it properly adds its errback.
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|
594 d.addErrback(self._mapErrors) |
167
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|
595 return d |
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596 |
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597 |
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598 def getNodes(self, requestor, service): |
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599 if service.resource: |
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600 return defer.succeed([]) |
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601 d = self.backend.getNodes() |
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602 return d.addErrback(self._mapErrors) |
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603 |
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604 |
167
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605 def publish(self, requestor, service, nodeIdentifier, items): |
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606 d = self.backend.publish(nodeIdentifier, items, requestor) |
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607 return d.addErrback(self._mapErrors) |
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608 |
198
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609 |
167
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610 def subscribe(self, requestor, service, nodeIdentifier, subscriber): |
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611 d = self.backend.subscribe(nodeIdentifier, subscriber, requestor) |
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612 return d.addErrback(self._mapErrors) |
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613 |
198
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614 |
167
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615 def unsubscribe(self, requestor, service, nodeIdentifier, subscriber): |
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616 d = self.backend.unsubscribe(nodeIdentifier, subscriber, requestor) |
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617 return d.addErrback(self._mapErrors) |
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618 |
198
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619 |
167
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620 def subscriptions(self, requestor, service): |
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621 d = self.backend.getSubscriptions(requestor) |
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622 return d.addErrback(self._mapErrors) |
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623 |
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624 |
167
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625 def affiliations(self, requestor, service): |
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626 d = self.backend.getAffiliations(requestor) |
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627 return d.addErrback(self._mapErrors) |
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628 |
198
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629 |
167
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630 def create(self, requestor, service, nodeIdentifier): |
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631 d = self.backend.createNode(nodeIdentifier, requestor) |
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632 return d.addErrback(self._mapErrors) |
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633 |
198
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634 |
167
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635 def getDefaultConfiguration(self, requestor, service): |
198
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636 d = self.backend.getDefaultConfiguration() |
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637 return d.addErrback(self._mapErrors) |
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638 |
198
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639 |
167
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640 def getConfiguration(self, requestor, service, nodeIdentifier): |
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641 d = self.backend.getNodeConfiguration(nodeIdentifier) |
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642 return d.addErrback(self._mapErrors) |
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643 |
198
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644 |
167
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645 def setConfiguration(self, requestor, service, nodeIdentifier, options): |
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646 d = self.backend.setNodeConfiguration(nodeIdentifier, options, |
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647 requestor) |
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648 return d.addErrback(self._mapErrors) |
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649 |
198
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650 |
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651 def items(self, requestor, service, nodeIdentifier, maxItems, |
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652 itemIdentifiers): |
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653 d = self.backend.getItems(nodeIdentifier, requestor, maxItems, |
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654 itemIdentifiers) |
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655 return d.addErrback(self._mapErrors) |
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656 |
198
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657 |
167
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658 def retract(self, requestor, service, nodeIdentifier, itemIdentifiers): |
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659 d = self.backend.retractItem(nodeIdentifier, itemIdentifiers, |
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660 requestor) |
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661 return d.addErrback(self._mapErrors) |
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662 |
198
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663 |
167
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664 def purge(self, requestor, service, nodeIdentifier): |
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665 d = self.backend.purgeNode(nodeIdentifier, requestor) |
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666 return d.addErrback(self._mapErrors) |
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667 |
198
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668 |
167
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669 def delete(self, requestor, service, nodeIdentifier): |
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670 d = self.backend.deleteNode(nodeIdentifier, requestor) |
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671 return d.addErrback(self._mapErrors) |
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672 |
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673 components.registerAdapter(PubSubServiceFromBackend, |
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674 IBackendService, |
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675 IPubSubService) |