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annotate src/plugins/plugin_misc_groupblog.py @ 465:78e67a59d51d

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plugin groupblog: added getLastGroupBlogs method
author Goffi <goffi@goffi.org>
date Sat, 24 Mar 2012 17:48:12 +0100
parents d9456d94cd12
children 47af60767013
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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, 2012 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, data_form
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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_PUBSUB = 'http://jabber.org/protocol/pubsub'
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36 #NS_PUBSUB_EXP = 'http://goffi.org/protocol/pubsub' #for non official features
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37 NS_PUBSUB_EXP = NS_PUBSUB #XXX: we can't use custom namespace as Wokkel's PubSubService use official NS
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38 NS_PUBSUB_ITEM_ACCESS = NS_PUBSUB_EXP + "#item-access"
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39 NS_PUBSUB_CREATOR_JID_CHECK = NS_PUBSUB_EXP + "#creator-jid-check"
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40 NS_PUBSUB_ITEM_CONFIG = NS_PUBSUB_EXP + "#item-config"
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41 NS_PUBSUB_AUTO_CREATE = NS_PUBSUB + "#auto-create"
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42 OPT_ROSTER_GROUPS_ALLOWED = 'pubsub#roster_groups_allowed'
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43 OPT_ACCESS_MODEL = 'pubsub#access_model'
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44 OPT_PERSIST_ITEMS = 'pubsub#persist_items'
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45 OPT_MAX_ITEMS = 'pubsub#max_items'
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46 OPT_NODE_TYPE = 'pubsub#node_type'
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47 OPT_SUBSCRIPTION_TYPE = 'pubsub#subscription_type'
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48 OPT_SUBSCRIPTION_DEPTH = 'pubsub#subscription_depth'
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49 TYPE_COLLECTION = 'collection'
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50
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51 PLUGIN_INFO = {
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52 "name": "Group blogging throught collections",
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53 "import_name": "groupblog",
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54 "type": "MISC",
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55 "protocols": [],
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56 "dependencies": ["XEP-0277"],
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57 "main": "GroupBlog",
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58 "handler": "no",
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59 "description": _("""Implementation of microblogging with roster access""")
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60 }
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61
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62 class NoCompatiblePubSubServerFound(Exception):
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63 pass
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64
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65 class GroupBlog():
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66 """This class use a SàT PubSub Service to manage access on microblog"""
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67
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68 def __init__(self, host):
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69 info(_("Group blog plugin initialization"))
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70 self.host = host
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71
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72 host.bridge.addMethod("sendGroupBlog", ".plugin", in_sign='asss', out_sign='',
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73 method=self.sendGroupBlog,
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74 doc = { 'summary':"Send a microblog to a list of groups",
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75 'param_0':'list of groups which can read the microblog',
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76 'param_1':'text to send',
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77 'param_2':'%(doc_profile)s'
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78 })
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80 host.bridge.addMethod("getLastGroupBlogs", ".plugin",
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81 in_sign='sis', out_sign='aa{ss}',
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82 method=self.getLastGroupBlogs,
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83 async = True,
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84 doc = { 'summary':'retrieve items',
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85 'param_0':'jid: publisher of wanted microblog',
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86 'param_1':'max_items: see XEP-0060 #6.5.7',
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87 'param_2':'%(doc_profile)s',
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88 'return':'list of microblog data (dict)'
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89 })
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90
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91 @defer.inlineCallbacks
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92 def initialise(self, profile_key):
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93 """Check that this data for this profile are initialised, and do it else
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94 @param client: client of the profile
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95 @profile_key: %(doc_profile)s"""
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96 profile = self.host.memory.getProfileName(profile_key)
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97 if not profile:
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98 error(_("Unknown profile"))
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99 raise Exception("Unknown profile")
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100
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101 client = self.host.getClient(profile)
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102 if not client:
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103 error(_('No client for this profile key: %s') % profile_key)
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104 raise Exception("Unknown profile")
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105 yield client.client_initialized #we want to be sure that the client is initialized
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106
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107 #we first check that we have a item-access pubsub server
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108 if not hasattr(client,"item_access_pubsub"):
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109 debug(_('Looking for item-access power pubsub server'))
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110 #we don't have any pubsub server featuring item access yet
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111 test = self.host.memory.getServerServiceEntities("pubsub", "service", profile)
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112 client.item_access_pubsub = None
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113 for entity in self.host.memory.getServerServiceEntities("pubsub", "service", profile):
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114 disco = yield client.disco.requestInfo(entity)
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115 if set([NS_PUBSUB_ITEM_ACCESS, NS_PUBSUB_AUTO_CREATE, NS_PUBSUB_CREATOR_JID_CHECK]).issubset(disco.features):
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116 info(_("item-access powered pubsub service found: [%s]") % entity.full())
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117 client.item_access_pubsub = entity
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118
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119 if not client.item_access_pubsub:
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120 error(_("No item-access powered pubsub server found, can't post group blog"))
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121 raise NoCompatiblePubSubServerFound
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122
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123 defer.returnValue((profile, client))
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124
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125
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126 def _publishMblog(self, service, groups, message, client):
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127 """Actually publish the message on the group blog
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128 @param service: jid of the item-access pubsub service
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129 @param groups: set of groups allowed to see the item
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130 @param message: message to publish
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131 @param client: SatXMPPClient of the published"""
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132 mblog_item = self.host.plugins["XEP-0277"].data2entry({'content':message}, client.profile)
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133 form = data_form.Form('submit', formNamespace=NS_PUBSUB_ITEM_CONFIG)
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134 field = data_form.Field('list-multi', OPT_ROSTER_GROUPS_ALLOWED, values=groups)
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135 form.addField(field)
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136 mblog_item.addChild(form.toElement())
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137 defer_blog = self.host.plugins["XEP-0060"].publish(service, client.jid.userhost(), items=[mblog_item], profile_key=client.profile)
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138 defer_blog.addErrback(self._mblogPublicationFailed)
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139
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140 def _mblogPublicationFailed(self, failure):
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141 #TODO
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142 pass
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143
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144 def sendGroupBlog(self, groups, message, profile_key='@DEFAULT@'):
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145 """Publish a microblog to the node associated to the groups
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146 If the node doesn't exist, it is created, then the message is posted
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147 @param groups: list of groups allowed to retrieve the microblog
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148 @param message: microblog
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149 @profile_key: %(doc_profile)s
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150 """
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151 print "sendGroupBlog"
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152
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153 def initialised(result):
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154 profile, client = result
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155 _groups = set(groups).intersection(client.roster.getGroups()) #We only keep group which actually exist
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156 #TODO: send an error signal if user want to post to non existant groups
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157
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158 self._publishMblog(client.item_access_pubsub, _groups, message, client)
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160 self.initialise(profile_key).addCallback(initialised)
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161
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162
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163
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164 def getLastGroupBlogs(self, pub_jid, max_items=10, profile_key='@DEFAULT@', callback=None, errback=None):
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165 """Get the last published microblogs
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166 @param pub_jid: jid of the publisher
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167 @param max_items: how many microblogs we want to get
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168 @param profile_key: profile key
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169 @param callback: used for the async answer
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170 @param errback: used for the async answer
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171 """
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172
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173 def initialised(result):
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174 profile, client = result
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175 d = self.host.plugins["XEP-0060"].getItems(client.item_access_pubsub, jid.JID(pub_jid).userhost(),
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176 max_items=max_items, profile_key=profile_key)
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177 d.addCallbacks(lambda items: callback(map(self.host.plugins["XEP-0277"].item2mbdata, items)), errback)
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178
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179 assert(callback)
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180 self.initialise(profile_key).addCallback(initialised)
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181 #TODO: we need to use the server corresponding the the host of the jid
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182