annotate src/plugins/plugin_misc_groupblog.py @ 312:f56108eb2880

plugin group blog: a custom cb is now used to specitfy node and groups targetted by the blog
author Goffi <goffi@goffi.org>
date Fri, 15 Apr 2011 02:03:10 +0200
parents 0aa6ca6cdbdd
children 0f9925193586
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1 #!/usr/bin/python
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2 # -*- coding: utf-8 -*-
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3
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4 """
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5 SAT plugin for microbloging with roster access
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6 Copyright (C) 2009, 2010, 2011 Jérôme Poisson (goffi@goffi.org)
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7
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8 This program is free software: you can redistribute it and/or modify
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9 it under the terms of the GNU General Public License as published by
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10 the Free Software Foundation, either version 3 of the License, or
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11 (at your option) any later version.
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12
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13 This program is distributed in the hope that it will be useful,
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14 but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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16 GNU General Public License for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with this program. If not, see <http://www.gnu.org/licenses/>.
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20 """
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21
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22 from logging import debug, info, error
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23 from twisted.internet import protocol, defer
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24 from twisted.words.protocols.jabber import jid
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25 from twisted.words.protocols.jabber import error as jab_error
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26 import twisted.internet.error
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27 from twisted.words.xish import domish
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28 from sat.tools.xml_tools import ElementParser
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29
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30 from wokkel import disco,pubsub
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31 from feed.atom import Entry, Author
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32 import uuid
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33 from time import time
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34
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35 NS_MICROBLOG = 'urn:xmpp:microblog:%02d'
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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'
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43 TYPE_COLLECTION = 'collection'
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44
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45 PLUGIN_INFO = {
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46 "name": "Group blogging throught collections",
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47 "import_name": "groupblog",
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48 "type": "MISC",
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49 "protocols": [],
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50 "dependencies": ["XEP-0277"],
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51 "main": "GroupBlog",
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52 "handler": "no",
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53 "description": _("""Implementation of microblogging with roster access""")
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54 }
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55
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56 class NodeCreationError(Exception):
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57 pass
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58
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59 class NodeDeletionError(Exception):
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60 pass
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61
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62 class GroupBlog():
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63 """This class use a PubSub Collection to manage roster access on microblog"""
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64
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65 def __init__(self, host):
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66 info(_("Group blog plugin initialization"))
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67 self.host = host
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68 self._blog_nodes={}
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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)
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72 host.bridge.addMethod("cleanBlogCollection", ".communication", in_sign='s', out_sign='',
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73 method=self.cleanBlogCollection,
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74 doc = {
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75 })
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76
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77 host.bridge.addMethod("getMblogNodes", ".communication", in_sign='s', out_sign='a{sas}',
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78 method=self.getMblogNodes,
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79 async = True,
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80 doc = { 'summary':"retrieve mblog node, and their association with roster's groups",
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81 'param_0':'%(doc_profile)s',
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82 'return':'list of microblog data (dict)'
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83 })
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84
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85 host.bridge.addMethod("sendGroupBlog", ".communication", in_sign='asss', out_sign='',
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86 method=self.sendGroupBlog,
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87 doc = { 'summary':"Send a microblog to a list of groups",
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88 'param_0':'list of groups which can read the microblog',
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89 'param_1':'text to send',
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90 'param_2':'%(doc_profile)s'
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91 })
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92
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93 host.bridge.addMethod("subscribeGroupBlog", ".communication", 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 microblog_data["groups"] = "\n".join(self._blog_nodes[profile].get(itemsEvent.nodeIdentifier, []))
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105 self.host.bridge.personalEvent(itemsEvent.sender.full(), "MICROBLOG", microblog_data, profile)
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106
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107 def _getRootNode(self, entity):
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108 return "%(entity)s_%(root_suff)s" % {'entity':entity.userhost(), 'root_suff':MBLOG_COLLECTION}
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109
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110 def _getNodeName(self, number):
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111 """Return the node name
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112 @param number: int number of the node
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113 @param entity: jid of the owner"""
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114 return NS_MICROBLOG % number
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115
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116 def _getConfigNode(self, entity):
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117 return "%(entity)s_%(root_suff)s" % {'entity':entity.userhost(), 'root_suff':CONFIG_NODE}
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118
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119 def _configNodeCb(self, result, callback, profile):
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120 self._blog_nodes[profile] = {}
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121 for item in result:
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122 node_ass = item.firstChildElement()
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123 assert(node_ass.name == "node_association")
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124 node = node_ass['node']
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125 groups = [unicode(group) for group in node_ass.children]
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126 self._blog_nodes[profile][node] = groups
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127 callback(self._blog_nodes[profile])
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128
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129 def _configNodeFail(self, failure, errback):
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130 import pdb
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131 pdb.set_trace()
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132 errback("") #FIXME
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133
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134 def _configNodeErr(self, failure, user_jid, pubsub_ent, callback, errback, profile):
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135 if failure.value.condition == 'item-not-found':
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136 debug(_('Multiblog config node not found, creating it'))
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137 _options = {OPT_ACCESS_MODEL:"whitelist", OPT_PERSIST_ITEMS:1, OPT_MAX_ITEMS:-1}
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138 d = self.host.plugins["XEP-0060"].createNode(pubsub_ent, self._getConfigNode(user_jid), _options, profile_key=profile)
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139 d.addCallback(lambda result: self._configNodeCb([] , callback, profile))
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140 d.addErrback(self._configNodeFail, errback)
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141 else:
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142 self._configNodeFail(failure, errback)
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143
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144 def getMblogNodes(self, profile_key='@DEFAULT@', callback=None, errback=None):
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145 debug(_('Getting mblog nodes'))
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146 profile = self.host.memory.getProfileName(profile_key)
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147 if not profile:
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148 error(_("Unknown profile"))
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149 return {}
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150
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151 def after_init(ignore):
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152 pubsub_ent = self.host.memory.getServerServiceEntity("pubsub", "service", profile)
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153 _jid, xmlstream = self.host.getJidNStream(profile_key)
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154 d = self.host.plugins["XEP-0060"].getItems(pubsub_ent, self._getConfigNode(_jid), profile_key=profile_key)
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155 d.addCallbacks(self._configNodeCb, self._configNodeErr, callbackArgs=(callback, profile), errbackArgs=(_jid, pubsub_ent, callback, errback, profile))
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156
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157 client = self.host.getClient(profile)
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158 if not client:
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159 error(_('No client for this profile key: %s') % profile_key)
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160 return
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161 client.client_initialized.addCallback(after_init)
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162
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163 def _publishMblog(self, name, message, client):
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164 """Actually publish the message on the group blog
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165 @param name: name of the node where we publish
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166 @param message: message to publish
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167 @param client: SatXMPPClient of the published"""
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168 mblog_item = self.host.plugins["XEP-0277"].data2entry({'content':message}, client.profile)
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169 defer_blog = self.host.plugins["XEP-0060"].publish(client.jid.userhostJID(), name, items=[mblog_item], profile_key=client.profile)
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170 defer_blog.addErrback(self._mblogPublicationFailed)
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171
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172 def _groupNodeCreated(self, ignore, groups, name, message, client):
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173 """A group node as been created, we need to add it to the configure node, and send the message to it
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174 @param groups: list of groups authorized to subscribe to the node
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175 @param name: unique name of the node
307
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176 @param message: message to publish to the group
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177 @param client: SatXMPPClient"""
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178 def configNodeUpdated(result):
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179 self._blog_nodes[client.profile][name] = groups
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180 debug(_("Configuration node updated"))
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181
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182 config_node = self._getConfigNode(client.jid)
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183 _payload = domish.Element(('','node_association'))
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184 _payload['node'] = name
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185 for group in groups:
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186 _payload.addElement('group',content=group)
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187 config_item = pubsub.Item(payload=_payload)
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188 pubsub_ent = self.host.memory.getServerServiceEntity("pubsub", "service", client.profile)
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189 defer_config = self.host.plugins["XEP-0060"].publish(pubsub_ent, config_node, items=[config_item], profile_key=client.profile)
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190 defer_config.addCallback(configNodeUpdated)
307
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191 defer_config.addErrback(self._configUpdateFailed)
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192
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193 #Finally, we publish the message
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194 self._publishMblog(name, message, client)
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195
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196
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197 def _mblogPublicationFailed(self, failure):
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198 #TODO
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199 import pdb
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200 pdb.set_trace()
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201
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202 def _configUpdateFailed(self, failure):
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203 #TODO
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204 import pdb
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205 pdb.set_trace()
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206
311
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207 def _nodeCreationFailed(self, failure, name, groups, message, client):
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208 #FIXME: temporary behaviour is to delete the node,
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209 #user input should be required in the future
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210 def unmanagedError(failure):
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211 msg = _("Can't create node")
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212 error(msg)
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213 raise NodeCreationError(msg)
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214
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215 if failure.value.condition == 'conflict':
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216 pubsub_elts = filter(lambda elt: elt.name == 'pubsub', failure.value.children)
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217 if pubsub_elts:
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218 create_elts = filter(lambda elt: elt.name == 'create', pubsub_elts[0].children)
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219 if create_elts:
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220 _from = jid.JID(failure.value.stanza['from'])
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221 _node = create_elts[0]['node']
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222 d = self.host.plugins["XEP-0060"].deleteNode(_from, _node, client.profile)
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223 d.addCallback(self._createNode, name, groups, message, client)
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224 d.addErrback(unmanagedError)
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225 else:
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226 unmanagedError(None)
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227 msg = _("Can't create node")
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228 error(msg)
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229 raise NodeCreationError(msg)
307
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230
311
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231 def _createNode(self, ignore, name, groups, message, client):
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232 """create a group microblog node
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233 @param ignore: ignored param, necessary to be added as a deferred callback
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234 @param name: name of the node
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235 @param groups: list of group than can subscribe to the node
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236 @param message: message to publish
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237 @param client: SatXMPPClient"""
310
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238 _options = {OPT_ACCESS_MODEL:"roster", OPT_PERSIST_ITEMS:1, OPT_MAX_ITEMS:-1,
307
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239 'pubsub#roster_groups_allowed':groups}
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240 d = self.host.plugins["XEP-0060"].createNode(client.jid.userhostJID(), name, _options, client.profile)
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241 d.addCallback(self._groupNodeCreated, groups, name, message, client)
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242 d.addErrback(self._nodeCreationFailed, name, groups, message, client)
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243
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244 def _getNodeForGroups(self, groups, profile):
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245 """Return node associated with the given list of groups
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246 @param groups: list of groups
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247 @param profile: profile of publisher"""
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248 for node in self._blog_nodes[profile]:
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249 node_groups = self._blog_nodes[profile][node]
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250 if set(node_groups) == set(groups):
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251 return node
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252 return None
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253
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254 def _getFreeNode(self, entity, profile):
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255 """Return a free group number,
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256 raise an exception if we have reach limit"""
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257 _all = set([self._getNodeName(idx) for idx in range(1,21)])
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258 _used = set(self._blog_nodes[profile].keys())
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259 _free = _all.difference(_used)
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260 if not _free:
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261 msg = _("Can't create group node: no more free node available")
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262 warning(msg)
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263 raise NodeCreationError(msg)
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264 else:
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265 return _free.pop()
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266
307
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267 def sendGroupBlog(self, groups, message, profile_key='@DEFAULT@'):
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268 """Publish a microblog to the node associated to the groups
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269 If the node doesn't exist, it is created, then the message is posted
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270 @param groups: list of groups allowed to retrieve the microblog
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271 @param message: microblog
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272 @profile_key: %(doc_profile)s
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273 """
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274 profile = self.host.memory.getProfileName(profile_key)
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275 if not profile:
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276 error(_("Unknown profile"))
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277 return
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278
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279 def after_init(ignore):
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280 _groups = list(set(groups).intersection(client.roster.getGroups())) #We only keep group which actually exist
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281 #TODO: send an error signal if user want to post to non existant groups
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282 _groups.sort()
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283 for group in _groups:
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284 _node = self._getNodeForGroups([group], profile)
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285 if not _node:
311
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286 _node_name = self._getFreeNode(client.jid, profile)
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287 self._createNode(None, _node_name, [group], message, client)
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288 else:
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289 self._publishMblog(_node, message, client)
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290
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291 client = self.host.getClient(profile)
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292 if not client:
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293 error(_('No client for this profile key: %s') % profile_key)
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294 return
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295 client.client_initialized.addCallback(after_init)
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296
308
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297 def _doCleaning(self, result, pubsub_ent, profile):
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298 """Compare the node in config node, and the existing nodes, and delete unknown ones"""
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299 #TODO: manage groups which don't exist anymore
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300 assert(len(result)==2)
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301 assert(result[0][0]==True and result[1][0]==True)
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302 config_nodes = [item.firstChildElement()["node"] for item in result[0][1]]
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303 existing_nodes = [item.nodeIdentifier for item in result[1][1]._items]
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304 to_delete = set(config_nodes).symmetric_difference(existing_nodes)
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305 def check_deletion(result):
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306 for (success, value) in result:
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307 if not success:
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308 msg = _("Can't delete node")
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309 error(msg)
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310 raise NodeDeletionError(msg)
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311 #TODO: log node which was not deleted
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312
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313
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314 d = defer.DeferredList([self.host.plugins["XEP-0060"].deleteNode(pubsub_ent, node, profile) for node in to_delete])
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315 d.addCallback(check_deletion)
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316
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317 def cleanBlogCollection(self, profile_key='@DEFAULT@'):
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318 """Remove blog nodes not referenced in config node"""
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319 debug(_('Getting mblog nodes'))
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320 profile = self.host.memory.getProfileName(profile_key)
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321 if not profile:
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322 error(_("Unknown profile"))
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323 return {}
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324
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325 def after_init(ignore):
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326 pubsub_ent = self.host.memory.getServerServiceEntity("pubsub", "service", profile)
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327 _jid, xmlstream = self.host.getJidNStream(profile_key)
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328 d_config = self.host.plugins["XEP-0060"].getItems(pubsub_ent, self._getConfigNode(_jid), profile_key=profile_key)
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329 d_root = client.disco.requestItems(pubsub_ent, self._getRootNode(client.jid))
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330 defer.DeferredList([d_config, d_root]).addCallback(self._doCleaning, pubsub_ent, profile)
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331
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332 client = self.host.getClient(profile)
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333 if not client:
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334 error(_('No client for this profile key: %s') % profile_key)
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335 return
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336 client.client_initialized.addCallback(after_init)
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337
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338 def subscribeGroupBlog(self, pub_jid, profile_key='@DEFAULT@'):
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339 debug(_('subscribing mblog nodes'))
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340 _pub_jid = jid.JID(pub_jid)
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341 profile = self.host.memory.getProfileName(profile_key)
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342 if not profile:
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343 error(_("Unknown profile"))
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344 return
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345
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346 def after_init(ignore):
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347 pubsub_ent = self.host.memory.getServerServiceEntity("pubsub", "service", profile)
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348 _options = {OPT_SUBSCRIPTION_TYPE:'items', OPT_SUBSCRIPTION_DEPTH:'1'}
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349 d = self.host.plugins["XEP-0060"].subscribe(pubsub_ent, self._getRootNode(_pub_jid), options = _options, profile_key=profile)
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350 d.addCallback(lambda x: debug(_("%(publisher)s's group node subscribed [%(profile)s]") % {'publisher':_pub_jid.userhost(), 'profile': profile}))
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351 d.addErrback(lambda x: error(_("Can't subscribe group node [%(profile)s]") % {'profile': profile}))
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352
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353 client = self.host.getClient(profile)
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354 if not client:
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355 error(_('No client for this profile key: %s') % profile_key)
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356 return
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357 client.client_initialized.addCallback(after_init)
311
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358