Mercurial > libervia-backend
annotate src/plugins/plugin_misc_groupblog.py @ 384:785420cd63f7
plugins: In-Band Bytestreams (XEP-0047) implementation
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Thu, 29 Sep 2011 12:05:45 +0200 |
| parents | f964dcec1611 |
| children | cf005701624b |
| rev | line source |
|---|---|
| 307 | 1 #!/usr/bin/python |
| 2 # -*- coding: utf-8 -*- | |
| 3 | |
| 4 """ | |
| 5 SAT plugin for microbloging with roster access | |
| 6 Copyright (C) 2009, 2010, 2011 Jérôme Poisson (goffi@goffi.org) | |
| 7 | |
| 8 This program is free software: you can redistribute it and/or modify | |
| 9 it under the terms of the GNU General Public License as published by | |
| 10 the Free Software Foundation, either version 3 of the License, or | |
| 11 (at your option) any later version. | |
| 12 | |
| 13 This program is distributed in the hope that it will be useful, | |
| 14 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 16 GNU General Public License for more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License | |
| 19 along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 20 """ | |
| 21 | |
| 22 from logging import debug, info, error | |
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23 from twisted.internet import protocol, defer |
| 307 | 24 from twisted.words.protocols.jabber import jid |
| 25 from twisted.words.protocols.jabber import error as jab_error | |
| 26 import twisted.internet.error | |
| 27 from twisted.words.xish import domish | |
| 28 from sat.tools.xml_tools import ElementParser | |
| 29 | |
| 30 from wokkel import disco,pubsub | |
| 31 from feed.atom import Entry, Author | |
| 32 import uuid | |
| 33 from time import time | |
| 34 | |
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35 NS_MICROBLOG = 'urn:xmpp:microblog:%02d' |
| 307 | 36 CONFIG_NODE = 'CONFIG' |
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37 OPT_ACCESS_MODEL = 'pubsub#access_model' |
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38 OPT_PERSIST_ITEMS = 'pubsub#persist_items' |
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39 OPT_MAX_ITEMS = 'pubsub#max_items' |
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40 OPT_NODE_TYPE = 'pubsub#node_type' |
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41 OPT_SUBSCRIPTION_TYPE = 'pubsub#subscription_type' |
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42 OPT_SUBSCRIPTION_DEPTH = 'pubsub#subscription_depth' |
| 307 | 43 TYPE_COLLECTION = 'collection' |
| 44 | |
| 45 PLUGIN_INFO = { | |
| 46 "name": "Group blogging throught collections", | |
| 47 "import_name": "groupblog", | |
| 48 "type": "MISC", | |
| 49 "protocols": [], | |
| 50 "dependencies": ["XEP-0277"], | |
| 51 "main": "GroupBlog", | |
| 52 "handler": "no", | |
| 53 "description": _("""Implementation of microblogging with roster access""") | |
| 54 } | |
| 55 | |
| 56 class NodeCreationError(Exception): | |
| 57 pass | |
| 58 | |
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59 class NodeDeletionError(Exception): |
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60 pass |
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61 |
| 307 | 62 class GroupBlog(): |
| 63 """This class use a PubSub Collection to manage roster access on microblog""" | |
| 64 | |
| 65 def __init__(self, host): | |
| 66 info(_("Group blog plugin initialization")) | |
| 67 self.host = host | |
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68 self._blog_nodes={} #keep association betweek [profile][node] and [groups] |
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69 for i in range(1,21): |
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70 self.host.plugins["XEP-0163"].addPEPEvent("MICROBLOG_%02d" % i, NS_MICROBLOG % i, self.groupblogCB, None) |
| 307 | 71 |
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72 host.bridge.addMethod("cleanBlogCollection", ".plugin", in_sign='s', out_sign='', |
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73 method=self.cleanBlogCollection, |
| 307 | 74 doc = { |
| 75 }) | |
| 76 | |
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77 host.bridge.addMethod("getMblogNodes", ".plugin", in_sign='s', out_sign='a{sas}', |
| 307 | 78 method=self.getMblogNodes, |
| 79 async = True, | |
| 80 doc = { 'summary':"retrieve mblog node, and their association with roster's groups", | |
| 81 'param_0':'%(doc_profile)s', | |
| 82 'return':'list of microblog data (dict)' | |
| 83 }) | |
| 84 | |
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85 host.bridge.addMethod("sendGroupBlog", ".plugin", in_sign='asss', out_sign='', |
| 307 | 86 method=self.sendGroupBlog, |
| 87 doc = { 'summary':"Send a microblog to a list of groups", | |
| 88 'param_0':'list of groups which can read the microblog', | |
| 89 'param_1':'text to send', | |
| 90 'param_2':'%(doc_profile)s' | |
| 91 }) | |
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92 |
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93 host.bridge.addMethod("subscribeGroupBlog", ".plugin", in_sign='ss', out_sign='', |
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94 method=self.subscribeGroupBlog, |
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95 doc = { 'summary':"Subscribe to the group blog of somebody", |
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96 'param_0':'jid of the group node published', |
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97 'param_1':'%(doc_profile)s' |
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98 }) |
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99 |
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100 def groupblogCB(self, itemsEvent, profile): |
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101 for item in itemsEvent.items: |
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102 microblog_data = self.host.plugins["XEP-0277"]._item2mbdata(item) |
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103 microblog_data["node"] = itemsEvent.nodeIdentifier |
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104 try: |
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105 microblog_data["groups"] = "\n".join(self._blog_nodes[profile].get(itemsEvent.nodeIdentifier, [])) |
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106 except KeyError: |
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107 pass |
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108 self.host.bridge.personalEvent(itemsEvent.sender.full(), "MICROBLOG", microblog_data, profile) |
| 307 | 109 |
| 110 def _getRootNode(self, entity): | |
| 111 return "%(entity)s_%(root_suff)s" % {'entity':entity.userhost(), 'root_suff':MBLOG_COLLECTION} | |
| 112 | |
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113 def _getNodeName(self, number): |
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114 """Return the node name |
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115 @param number: int number of the node |
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116 @param entity: jid of the owner""" |
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117 return NS_MICROBLOG % number |
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118 |
| 307 | 119 def _getConfigNode(self, entity): |
| 120 return "%(entity)s_%(root_suff)s" % {'entity':entity.userhost(), 'root_suff':CONFIG_NODE} | |
| 121 | |
| 122 def _configNodeCb(self, result, callback, profile): | |
| 123 self._blog_nodes[profile] = {} | |
| 124 for item in result: | |
| 125 node_ass = item.firstChildElement() | |
| 126 assert(node_ass.name == "node_association") | |
| 127 node = node_ass['node'] | |
| 128 groups = [unicode(group) for group in node_ass.children] | |
| 129 self._blog_nodes[profile][node] = groups | |
| 130 callback(self._blog_nodes[profile]) | |
| 131 | |
| 132 def _configNodeFail(self, failure, errback): | |
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133 errback("") #FIXME |
| 307 | 134 |
| 135 def _configNodeErr(self, failure, user_jid, pubsub_ent, callback, errback, profile): | |
| 136 if failure.value.condition == 'item-not-found': | |
| 137 debug(_('Multiblog config node not found, creating it')) | |
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138 _options = {OPT_ACCESS_MODEL:"whitelist", OPT_PERSIST_ITEMS:1, OPT_MAX_ITEMS:-1} |
| 307 | 139 d = self.host.plugins["XEP-0060"].createNode(pubsub_ent, self._getConfigNode(user_jid), _options, profile_key=profile) |
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140 d.addCallback(lambda result: self._configNodeCb([] , callback, profile)) |
| 307 | 141 d.addErrback(self._configNodeFail, errback) |
| 142 else: | |
| 143 self._configNodeFail(failure, errback) | |
| 144 | |
| 145 def getMblogNodes(self, profile_key='@DEFAULT@', callback=None, errback=None): | |
| 146 debug(_('Getting mblog nodes')) | |
| 147 profile = self.host.memory.getProfileName(profile_key) | |
| 148 if not profile: | |
| 149 error(_("Unknown profile")) | |
| 150 return {} | |
| 151 | |
| 152 def after_init(ignore): | |
| 153 pubsub_ent = self.host.memory.getServerServiceEntity("pubsub", "service", profile) | |
| 154 _jid, xmlstream = self.host.getJidNStream(profile_key) | |
| 155 d = self.host.plugins["XEP-0060"].getItems(pubsub_ent, self._getConfigNode(_jid), profile_key=profile_key) | |
| 156 d.addCallbacks(self._configNodeCb, self._configNodeErr, callbackArgs=(callback, profile), errbackArgs=(_jid, pubsub_ent, callback, errback, profile)) | |
| 157 | |
| 158 client = self.host.getClient(profile) | |
| 159 if not client: | |
| 160 error(_('No client for this profile key: %s') % profile_key) | |
| 161 return | |
| 162 client.client_initialized.addCallback(after_init) | |
| 163 | |
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164 def _publishMblog(self, name, message, client): |
| 307 | 165 """Actually publish the message on the group blog |
| 166 @param name: name of the node where we publish | |
| 167 @param message: message to publish | |
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168 @param client: SatXMPPClient of the published""" |
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169 mblog_item = self.host.plugins["XEP-0277"].data2entry({'content':message}, client.profile) |
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170 defer_blog = self.host.plugins["XEP-0060"].publish(client.jid.userhostJID(), name, items=[mblog_item], profile_key=client.profile) |
| 307 | 171 defer_blog.addErrback(self._mblogPublicationFailed) |
| 172 | |
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173 def _groupNodeCreated(self, ignore, groups, name, message, client): |
| 307 | 174 """A group node as been created, we need to add it to the configure node, and send the message to it |
| 175 @param groups: list of groups authorized to subscribe to the node | |
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176 @param name: unique name of the node |
| 307 | 177 @param message: message to publish to the group |
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178 @param client: SatXMPPClient""" |
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179 def configNodeUpdated(result): |
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180 self._blog_nodes[client.profile][name] = groups |
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181 debug(_("Configuration node updated")) |
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182 |
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183 config_node = self._getConfigNode(client.jid) |
| 307 | 184 _payload = domish.Element(('','node_association')) |
| 185 _payload['node'] = name | |
| 186 for group in groups: | |
| 187 _payload.addElement('group',content=group) | |
| 188 config_item = pubsub.Item(payload=_payload) | |
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189 pubsub_ent = self.host.memory.getServerServiceEntity("pubsub", "service", client.profile) |
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190 defer_config = self.host.plugins["XEP-0060"].publish(pubsub_ent, config_node, items=[config_item], profile_key=client.profile) |
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191 defer_config.addCallback(configNodeUpdated) |
| 307 | 192 defer_config.addErrback(self._configUpdateFailed) |
| 193 | |
| 194 #Finally, we publish the message | |
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195 self._publishMblog(name, message, client) |
| 307 | 196 |
| 197 | |
| 198 def _mblogPublicationFailed(self, failure): | |
| 199 #TODO | |
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200 pass |
| 307 | 201 |
| 202 def _configUpdateFailed(self, failure): | |
| 203 #TODO | |
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204 pass |
| 307 | 205 |
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206 def _nodeCreationFailed(self, failure, name, groups, message, client): |
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207 #FIXME: temporary behaviour is to delete the node, |
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208 #user input should be required in the future |
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209 def unmanagedError(failure): |
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210 msg = _("Can't create node") |
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211 error(msg) |
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212 raise NodeCreationError(msg) |
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213 |
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214 if failure.value.condition == 'conflict': |
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215 pubsub_elts = filter(lambda elt: elt.name == 'pubsub', failure.value.children) |
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216 if pubsub_elts: |
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217 create_elts = filter(lambda elt: elt.name == 'create', pubsub_elts[0].children) |
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218 if create_elts: |
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219 _from = jid.JID(failure.value.stanza['from']) |
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220 _node = create_elts[0]['node'] |
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221 d = self.host.plugins["XEP-0060"].deleteNode(_from, _node, client.profile) |
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222 d.addCallback(self._createNode, name, groups, message, client) |
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223 d.addErrback(unmanagedError) |
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224 else: |
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225 unmanagedError(None) |
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226 msg = _("Can't create node") |
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227 error(msg) |
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228 raise NodeCreationError(msg) |
| 307 | 229 |
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230 def _createNode(self, ignore, name, groups, message, client): |
| 307 | 231 """create a group microblog node |
| 232 @param ignore: ignored param, necessary to be added as a deferred callback | |
| 233 @param name: name of the node | |
| 234 @param groups: list of group than can subscribe to the node | |
| 235 @param message: message to publish | |
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236 @param client: SatXMPPClient""" |
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237 _options = {OPT_ACCESS_MODEL:"roster", OPT_PERSIST_ITEMS:1, OPT_MAX_ITEMS:-1, |
| 307 | 238 'pubsub#roster_groups_allowed':groups} |
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239 d = self.host.plugins["XEP-0060"].createNode(client.jid.userhostJID(), name, _options, client.profile) |
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240 d.addCallback(self._groupNodeCreated, groups, name, message, client) |
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241 d.addErrback(self._nodeCreationFailed, name, groups, message, client) |
| 307 | 242 |
| 243 def _getNodeForGroups(self, groups, profile): | |
| 244 """Return node associated with the given list of groups | |
| 245 @param groups: list of groups | |
| 246 @param profile: profile of publisher""" | |
| 247 for node in self._blog_nodes[profile]: | |
| 248 node_groups = self._blog_nodes[profile][node] | |
| 249 if set(node_groups) == set(groups): | |
| 250 return node | |
| 251 return None | |
| 252 | |
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253 def _getFreeNode(self, entity, profile): |
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254 """Return a free group number, |
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255 raise an exception if we have reach limit""" |
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256 _all = set([self._getNodeName(idx) for idx in range(1,21)]) |
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257 _used = set(self._blog_nodes[profile].keys()) |
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258 _free = _all.difference(_used) |
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259 if not _free: |
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260 msg = _("Can't create group node: no more free node available") |
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261 warning(msg) |
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262 raise NodeCreationError(msg) |
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263 else: |
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264 return _free.pop() |
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265 |
| 307 | 266 def sendGroupBlog(self, groups, message, profile_key='@DEFAULT@'): |
| 267 """Publish a microblog to the node associated to the groups | |
| 268 If the node doesn't exist, it is created, then the message is posted | |
| 269 @param groups: list of groups allowed to retrieve the microblog | |
| 270 @param message: microblog | |
| 271 @profile_key: %(doc_profile)s | |
| 272 """ | |
| 273 profile = self.host.memory.getProfileName(profile_key) | |
| 274 if not profile: | |
| 275 error(_("Unknown profile")) | |
| 276 return | |
| 277 | |
| 278 def after_init(ignore): | |
| 279 _groups = list(set(groups).intersection(client.roster.getGroups())) #We only keep group which actually exist | |
| 280 #TODO: send an error signal if user want to post to non existant groups | |
| 281 _groups.sort() | |
| 282 for group in _groups: | |
| 283 _node = self._getNodeForGroups([group], profile) | |
| 284 if not _node: | |
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285 _node_name = self._getFreeNode(client.jid, profile) |
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286 self._createNode(None, _node_name, [group], message, client) |
| 307 | 287 else: |
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288 self._publishMblog(_node, message, client) |
| 307 | 289 |
| 290 client = self.host.getClient(profile) | |
| 291 if not client: | |
| 292 error(_('No client for this profile key: %s') % profile_key) | |
| 293 return | |
| 294 client.client_initialized.addCallback(after_init) | |
| 295 | |
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296 def _doCleaning(self, result, pubsub_ent, profile): |
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297 """Compare the node in config node, and the existing nodes, and delete unknown ones""" |
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298 #TODO: manage groups which don't exist anymore |
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299 assert(len(result)==2) |
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300 assert(result[0][0]==True and result[1][0]==True) |
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301 config_nodes = [item.firstChildElement()["node"] for item in result[0][1]] |
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302 existing_nodes = [item.nodeIdentifier for item in result[1][1]._items] |
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303 to_delete = set(config_nodes).symmetric_difference(existing_nodes) |
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304 def check_deletion(result): |
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305 for (success, value) in result: |
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306 if not success: |
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307 msg = _("Can't delete node") |
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308 error(msg) |
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309 raise NodeDeletionError(msg) |
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310 #TODO: log node which was not deleted |
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311 |
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312 |
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313 d = defer.DeferredList([self.host.plugins["XEP-0060"].deleteNode(pubsub_ent, node, profile) for node in to_delete]) |
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314 d.addCallback(check_deletion) |
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315 |
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316 def cleanBlogCollection(self, profile_key='@DEFAULT@'): |
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317 """Remove blog nodes not referenced in config node""" |
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318 debug(_('Cleaning mblog nodes')) |
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319 profile = self.host.memory.getProfileName(profile_key) |
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320 if not profile: |
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321 error(_("Unknown profile")) |
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322 return {} |
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323 |
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324 def after_init(ignore): |
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325 pubsub_ent = self.host.memory.getServerServiceEntity("pubsub", "service", profile) |
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326 _jid, xmlstream = self.host.getJidNStream(profile_key) |
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327 d_config = self.host.plugins["XEP-0060"].getItems(pubsub_ent, self._getConfigNode(_jid), profile_key=profile_key) |
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328 d_root = client.disco.requestItems(pubsub_ent, self._getRootNode(client.jid)) |
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329 defer.DeferredList([d_config, d_root]).addCallback(self._doCleaning, pubsub_ent, profile) |
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330 |
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331 client = self.host.getClient(profile) |
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332 if not client: |
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333 error(_('No client for this profile key: %s') % profile_key) |
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334 return |
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335 client.client_initialized.addCallback(after_init) |
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336 |
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337 def subscribeGroupBlog(self, pub_jid, profile_key='@DEFAULT@'): |
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338 debug(_('subscribing mblog nodes')) |
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339 _pub_jid = jid.JID(pub_jid) |
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340 profile = self.host.memory.getProfileName(profile_key) |
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341 if not profile: |
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342 error(_("Unknown profile")) |
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343 return |
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344 |
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345 def after_init(ignore): |
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346 pubsub_ent = self.host.memory.getServerServiceEntity("pubsub", "service", profile) |
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347 _options = {OPT_SUBSCRIPTION_TYPE:'items', OPT_SUBSCRIPTION_DEPTH:'1'} |
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348 d = self.host.plugins["XEP-0060"].subscribe(pubsub_ent, self._getRootNode(_pub_jid), options = _options, profile_key=profile) |
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349 d.addCallback(lambda x: debug(_("%(publisher)s's group node subscribed [%(profile)s]") % {'publisher':_pub_jid.userhost(), 'profile': profile})) |
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350 d.addErrback(lambda x: error(_("Can't subscribe group node [%(profile)s]") % {'profile': profile})) |
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351 |
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352 client = self.host.getClient(profile) |
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353 if not client: |
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354 error(_('No client for this profile key: %s') % profile_key) |
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355 return |
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356 client.client_initialized.addCallback(after_init) |
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357 |