Mercurial > libervia-pubsub
annotate sat_pubsub/memory_storage.py @ 264:86e767dc6abb
packaging for release
| author | souliane <souliane@mailoo.org> |
|---|---|
| date | Sat, 22 Feb 2014 06:10:24 +0100 |
| parents | 9dfd3890e646 |
| children | 89493845d3dd |
| rev | line source |
|---|---|
| 233 | 1 #!/usr/bin/python |
| 2 #-*- coding: utf-8 -*- | |
| 3 | |
| 4 """ | |
|
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5 Copyright (c) 2003-2011 Ralph Meijer |
| 255 | 6 Copyright (c) 2012, 2013 Jérôme Poisson |
| 233 | 7 |
| 8 | |
| 9 This program is free software: you can redistribute it and/or modify | |
| 10 it under the terms of the GNU Affero General Public License as published by | |
| 11 the Free Software Foundation, either version 3 of the License, or | |
| 12 (at your option) any later version. | |
| 13 | |
| 14 This program is distributed in the hope that it will be useful, | |
| 15 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 17 GNU Affero General Public License for more details. | |
| 18 | |
| 19 You should have received a copy of the GNU Affero General Public License | |
| 20 along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 21 -- | |
| 22 | |
| 23 This program is based on Idavoll (http://idavoll.ik.nu/), | |
| 24 originaly written by Ralph Meijer (http://ralphm.net/blog/) | |
| 25 It is sublicensed under AGPL v3 (or any later version) as allowed by the original | |
| 26 license. | |
| 27 | |
| 28 -- | |
| 29 | |
| 30 Here is a copy of the original license: | |
| 31 | |
|
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32 Copyright (c) 2003-2011 Ralph Meijer |
| 233 | 33 |
| 34 Permission is hereby granted, free of charge, to any person obtaining | |
| 35 a copy of this software and associated documentation files (the | |
| 36 "Software"), to deal in the Software without restriction, including | |
| 37 without limitation the rights to use, copy, modify, merge, publish, | |
| 38 distribute, sublicense, and/or sell copies of the Software, and to | |
| 39 permit persons to whom the Software is furnished to do so, subject to | |
| 40 the following conditions: | |
| 41 | |
| 42 The above copyright notice and this permission notice shall be | |
| 43 included in all copies or substantial portions of the Software. | |
| 44 | |
| 45 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
| 46 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
| 47 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
| 48 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE | |
| 49 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION | |
| 50 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION | |
| 51 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
| 52 | |
| 53 """ | |
|
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54 |
| 107 | 55 import copy |
| 56 from zope.interface import implements | |
| 57 from twisted.internet import defer | |
| 58 from twisted.words.protocols.jabber import jid | |
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59 |
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60 from wokkel.pubsub import Subscription |
| 107 | 61 |
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62 from sat_pubsub import error, iidavoll |
| 107 | 63 |
| 64 class Storage: | |
| 65 | |
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66 implements(iidavoll.IStorage) |
| 107 | 67 |
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68 defaultConfig = { |
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69 'leaf': { |
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70 "pubsub#persist_items": True, |
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71 "pubsub#deliver_payloads": True, |
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72 "pubsub#send_last_published_item": 'on_sub', |
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73 }, |
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74 'collection': { |
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75 "pubsub#deliver_payloads": True, |
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76 "pubsub#send_last_published_item": 'on_sub', |
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77 } |
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78 } |
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79 |
| 107 | 80 def __init__(self): |
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81 rootNode = CollectionNode('', jid.JID('localhost'), |
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82 copy.copy(self.defaultConfig['collection'])) |
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83 self._nodes = {'': rootNode} |
| 107 | 84 |
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85 |
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86 def getNode(self, nodeIdentifier): |
| 107 | 87 try: |
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88 node = self._nodes[nodeIdentifier] |
| 107 | 89 except KeyError: |
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90 return defer.fail(error.NodeNotFound()) |
| 107 | 91 |
| 92 return defer.succeed(node) | |
| 93 | |
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94 |
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95 def getNodeIds(self): |
| 107 | 96 return defer.succeed(self._nodes.keys()) |
| 97 | |
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98 |
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99 def createNode(self, nodeIdentifier, owner, config): |
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100 if nodeIdentifier in self._nodes: |
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101 return defer.fail(error.NodeExists()) |
| 107 | 102 |
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103 if config['pubsub#node_type'] != 'leaf': |
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104 raise error.NoCollections() |
| 107 | 105 |
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106 node = LeafNode(nodeIdentifier, owner, config) |
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107 self._nodes[nodeIdentifier] = node |
| 107 | 108 |
| 109 return defer.succeed(None) | |
| 110 | |
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111 |
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112 def deleteNode(self, nodeIdentifier): |
| 107 | 113 try: |
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114 del self._nodes[nodeIdentifier] |
| 107 | 115 except KeyError: |
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116 return defer.fail(error.NodeNotFound()) |
| 107 | 117 |
| 118 return defer.succeed(None) | |
| 119 | |
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120 |
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121 def getAffiliations(self, entity): |
| 112 | 122 entity = entity.userhost() |
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123 return defer.succeed([(node.nodeIdentifier, node._affiliations[entity]) |
| 107 | 124 for name, node in self._nodes.iteritems() |
| 112 | 125 if entity in node._affiliations]) |
| 107 | 126 |
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127 |
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128 def getSubscriptions(self, entity): |
| 107 | 129 subscriptions = [] |
| 130 for node in self._nodes.itervalues(): | |
| 131 for subscriber, subscription in node._subscriptions.iteritems(): | |
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132 subscriber = jid.internJID(subscriber) |
| 112 | 133 if subscriber.userhostJID() == entity.userhostJID(): |
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134 subscriptions.append(subscription) |
| 107 | 135 |
| 136 return defer.succeed(subscriptions) | |
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137 |
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138 |
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139 def getDefaultConfiguration(self, nodeType): |
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140 if nodeType == 'collection': |
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141 raise error.NoCollections() |
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142 |
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143 return self.defaultConfig[nodeType] |
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144 |
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145 |
| 107 | 146 class Node: |
| 147 | |
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148 implements(iidavoll.INode) |
| 107 | 149 |
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150 def __init__(self, nodeIdentifier, owner, config): |
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151 self.nodeIdentifier = nodeIdentifier |
| 112 | 152 self._affiliations = {owner.userhost(): 'owner'} |
| 107 | 153 self._subscriptions = {} |
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154 self._config = copy.copy(config) |
| 107 | 155 |
| 156 | |
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157 def getType(self): |
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158 return self.nodeType |
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159 |
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160 |
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161 def getConfiguration(self): |
| 107 | 162 return self._config |
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163 |
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164 |
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165 def getMetaData(self): |
| 107 | 166 config = copy.copy(self._config) |
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167 config["pubsub#node_type"] = self.nodeType |
| 107 | 168 return config |
| 169 | |
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170 |
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171 def setConfiguration(self, options): |
| 107 | 172 for option in options: |
| 173 if option in self._config: | |
| 174 self._config[option] = options[option] | |
| 175 | |
| 176 return defer.succeed(None) | |
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177 |
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178 |
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179 def getAffiliation(self, entity): |
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180 return defer.succeed(self._affiliations.get(entity.userhost())) |
| 107 | 181 |
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182 |
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183 def getSubscription(self, subscriber): |
| 107 | 184 try: |
| 185 subscription = self._subscriptions[subscriber.full()] | |
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186 except KeyError: |
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187 return defer.succeed(None) |
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188 else: |
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189 return defer.succeed(subscription) |
| 107 | 190 |
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191 |
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192 def getSubscriptions(self, state=None): |
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193 return defer.succeed( |
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194 [subscription |
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195 for subscription in self._subscriptions.itervalues() |
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196 if state is None or subscription.state == state]) |
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197 |
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198 |
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199 |
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200 def addSubscription(self, subscriber, state, options): |
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201 if self._subscriptions.get(subscriber.full()): |
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202 return defer.fail(error.SubscriptionExists()) |
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203 |
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204 subscription = Subscription(self.nodeIdentifier, subscriber, state, |
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205 options) |
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206 self._subscriptions[subscriber.full()] = subscription |
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207 return defer.succeed(None) |
| 107 | 208 |
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209 |
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210 def removeSubscription(self, subscriber): |
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211 try: |
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212 del self._subscriptions[subscriber.full()] |
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213 except KeyError: |
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214 return defer.fail(error.NotSubscribed()) |
| 107 | 215 |
| 216 return defer.succeed(None) | |
| 217 | |
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218 |
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219 def isSubscribed(self, entity): |
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220 for subscriber, subscription in self._subscriptions.iteritems(): |
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221 if jid.internJID(subscriber).userhost() == entity.userhost() and \ |
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222 subscription.state == 'subscribed': |
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223 return defer.succeed(True) |
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224 |
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225 return defer.succeed(False) |
| 107 | 226 |
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227 |
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228 def getAffiliations(self): |
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229 affiliations = [(jid.internJID(entity), affiliation) for entity, affiliation |
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230 in self._affiliations.iteritems()] |
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231 |
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232 return defer.succeed(affiliations) |
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233 |
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234 |
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235 |
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236 class PublishedItem(object): |
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237 """ |
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238 A published item. |
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239 |
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240 This represent an item as it was published by an entity. |
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241 |
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242 @ivar element: The DOM representation of the item that was published. |
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243 @type element: L{Element<twisted.words.xish.domish.Element>} |
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244 @ivar publisher: The entity that published the item. |
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245 @type publisher: L{JID<twisted.words.protocols.jabber.jid.JID>} |
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246 """ |
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247 |
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248 def __init__(self, element, publisher): |
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249 self.element = element |
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250 self.publisher = publisher |
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251 |
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252 |
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253 |
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206
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254 class LeafNode(Node): |
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255 |
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256 implements(iidavoll.ILeafNode) |
| 107 | 257 |
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258 nodeType = 'leaf' |
| 107 | 259 |
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260 def __init__(self, nodeIdentifier, owner, config): |
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261 Node.__init__(self, nodeIdentifier, owner, config) |
| 107 | 262 self._items = {} |
| 263 self._itemlist = [] | |
| 264 | |
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265 |
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266 def storeItems(self, items, publisher): |
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267 for element in items: |
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268 item = PublishedItem(element, publisher) |
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269 itemIdentifier = element["id"] |
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270 if itemIdentifier in self._items: |
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271 self._itemlist.remove(self._items[itemIdentifier]) |
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272 self._items[itemIdentifier] = item |
| 107 | 273 self._itemlist.append(item) |
| 274 | |
| 275 return defer.succeed(None) | |
| 276 | |
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277 |
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278 def removeItems(self, itemIdentifiers): |
| 107 | 279 deleted = [] |
| 280 | |
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281 for itemIdentifier in itemIdentifiers: |
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282 try: |
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283 item = self._items[itemIdentifier] |
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284 except KeyError: |
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285 pass |
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286 else: |
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287 self._itemlist.remove(item) |
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288 del self._items[itemIdentifier] |
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289 deleted.append(itemIdentifier) |
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290 |
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291 return defer.succeed(deleted) |
| 107 | 292 |
|
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293 |
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294 def getItems(self, maxItems=None): |
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295 if maxItems: |
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296 itemList = self._itemlist[-maxItems:] |
| 107 | 297 else: |
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298 itemList = self._itemlist |
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299 return defer.succeed([item.element for item in itemList]) |
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300 |
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301 |
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302 def getItemsById(self, itemIdentifiers): |
| 107 | 303 items = [] |
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304 for itemIdentifier in itemIdentifiers: |
| 107 | 305 try: |
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306 item = self._items[itemIdentifier] |
| 107 | 307 except KeyError: |
| 308 pass | |
| 309 else: | |
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310 items.append(item.element) |
| 107 | 311 return defer.succeed(items) |
| 312 | |
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313 |
| 107 | 314 def purge(self): |
| 315 self._items = {} | |
| 316 self._itemlist = [] | |
| 317 | |
| 318 return defer.succeed(None) | |
| 319 | |
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320 |
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263
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321 def filterItemsWithPublisher(self, itemIdentifiers, requestor): |
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322 filteredItems = [] |
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323 for itemIdentifier in itemIdentifiers: |
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324 try: |
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325 if self._items[itemIdentifier].publisher.userhost() == requestor.userhost(): |
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326 filteredItems.append(self.items[itemIdentifier]) |
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327 except KeyError, AttributeError: |
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328 pass |
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329 return defer.succeed(filteredItems) |
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330 |
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331 |
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332 class CollectionNode(Node): |
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333 nodeType = 'collection' |
|
204
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334 |
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335 |
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336 |
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337 class GatewayStorage(object): |
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338 """ |
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339 Memory based storage facility for the XMPP-HTTP gateway. |
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340 """ |
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341 |
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342 def __init__(self): |
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343 self.callbacks = {} |
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344 |
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345 |
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346 def addCallback(self, service, nodeIdentifier, callback): |
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347 try: |
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348 callbacks = self.callbacks[service, nodeIdentifier] |
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349 except KeyError: |
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350 callbacks = set([callback]) |
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351 self.callbacks[service, nodeIdentifier] = callbacks |
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352 else: |
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353 callbacks.add(callback) |
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354 pass |
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355 |
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356 return defer.succeed(None) |
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357 |
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358 |
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359 def removeCallback(self, service, nodeIdentifier, callback): |
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360 try: |
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361 callbacks = self.callbacks[service, nodeIdentifier] |
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362 callbacks.remove(callback) |
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363 except KeyError: |
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364 return defer.fail(error.NotSubscribed()) |
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365 else: |
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366 if not callbacks: |
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367 del self.callbacks[service, nodeIdentifier] |
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368 |
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369 return defer.succeed(not callbacks) |
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370 |
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371 |
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372 def getCallbacks(self, service, nodeIdentifier): |
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373 try: |
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374 callbacks = self.callbacks[service, nodeIdentifier] |
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375 except KeyError: |
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376 return defer.fail(error.NoCallbacks()) |
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377 else: |
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378 return defer.succeed(callbacks) |
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379 |
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380 |
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381 def hasCallbacks(self, service, nodeIdentifier): |
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382 return defer.succeed((service, nodeIdentifier) in self.callbacks) |