Mercurial > libervia-backend

annotate src/plugins/plugin_xep_0060.py @ 751:1def5b7edf9f

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core, bridge: better GenericException handling
author Goffi <goffi@goffi.org>
date Tue, 17 Dec 2013 00:56:39 +0100
parents 812dc38c0094
children bfabeedbf32e
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rev   line source
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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 # SAT plugin for Publish-Subscribe (xep-0060)
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5 # Copyright (C) 2009, 2010, 2011, 2012, 2013 Jérôme Poisson (goffi@goffi.org)
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7 # This program is free software: you can redistribute it and/or modify
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8 # it under the terms of the GNU Affero General Public License as published by
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9 # the Free Software Foundation, either version 3 of the License, or
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10 # (at your option) any later version.
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11
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12 # This program is distributed in the hope that it will be useful,
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 # GNU Affero General Public License for more details.
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16
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17 # You should have received a copy of the GNU Affero General Public License
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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19
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20 from logging import debug, info, error
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21 from wokkel.pubsub import PubSubRequest
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22 from wokkel import disco, pubsub
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23 from zope.interface import implements
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24
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25 PLUGIN_INFO = {
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26 "name": "Publish-Subscribe",
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27 "import_name": "XEP-0060",
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28 "type": "XEP",
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29 "protocols": ["XEP-0060"],
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30 "dependencies": [],
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31 "main": "XEP_0060",
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32 "handler": "yes",
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33 "description": _("""Implementation of PubSub Protocol""")
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34 }
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36
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37 class XEP_0060(object):
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38 OPT_ACCESS_MODEL = 'pubsub#access_model'
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39 OPT_PERSIST_ITEMS = 'pubsub#persist_items'
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40 OPT_MAX_ITEMS = 'pubsub#max_items'
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41 OPT_DELIVER_PAYLOADS = 'pubsub#deliver_payloads'
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42 OPT_SEND_ITEM_SUBSCRIBE = 'pubsub#send_item_subscribe'
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43 OPT_NODE_TYPE = 'pubsub#node_type'
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44 OPT_SUBSCRIPTION_TYPE = 'pubsub#subscription_type'
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45 OPT_SUBSCRIPTION_DEPTH = 'pubsub#subscription_depth'
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46 OPT_ROSTER_GROUPS_ALLOWED = 'pubsub#roster_groups_allowed'
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47 OPT_PUBLISH_MODEL = 'pubsub#publish_model'
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48
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49 def __init__(self, host):
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50 info(_("PubSub plugin initialization"))
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51 self.host = host
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52 self.managedNodes = []
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53 self.clients = {}
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54 """host.bridge.addMethod("getItems", ".plugin", in_sign='ssa{ss}s', out_sign='as', method=self.getItems,
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55 async = True,
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56 doc = { 'summary':'retrieve items',
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57 'param_0':'service: pubsub service',
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58 'param_1':'node: node identifier',
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59 'param_2':'\n'.join(['options: can be:',
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60 '- max_items: see XEP-0060 #6.5.7',
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61 '- sub_id: subscription identifier, see XEP-0060 #7.2.2.2']),
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62 'param_3':'%(doc_profile)s',
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63 'return':'array of raw XML (content of the items)'
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64 })"""
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65
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66 def getHandler(self, profile):
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67 self.clients[profile] = SatPubSubClient(self.host, self)
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68 return self.clients[profile]
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69
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70 def addManagedNode(self, node_name, callback):
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71 """Add a handler for a namespace
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72 @param namespace: NS of the handler (will appear in disco info)
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73 @param callback: method to call when the handler is found
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74 @param profile: profile which manage this handler"""
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75 self.managedNodes.append((node_name, callback))
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76
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77 def __getClientNProfile(self, profile_key, action='do pusbsub'):
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78 """Return a tuple of (client, profile)
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79 raise error when the profile doesn't exists
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80 @param profile_key: as usual :)
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81 @param action: text of action to show in case of error"""
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82 profile = self.host.memory.getProfileName(profile_key)
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83 if not profile:
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84 err_mess = _('Trying to %(action)s with an unknown profile key [%(profile_key)s]') % {
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85 'action': action,
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86 'profile_key': profile_key}
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87 error(err_mess)
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88 raise Exception(err_mess)
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89 try:
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90 client = self.clients[profile]
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91 except KeyError:
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92 err_mess = _('INTERNAL ERROR: no handler for required profile')
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93 error(err_mess)
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94 raise Exception(err_mess)
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95 return profile, client
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96
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97 def publish(self, service, nodeIdentifier, items=None, profile_key='@DEFAULT@'):
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98 profile, client = self.__getClientNProfile(profile_key, 'publish item')
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99 return client.publish(service, nodeIdentifier, items, client.parent.jid)
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100
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101 def getItems(self, service, node, max_items=None, sub_id=None, profile_key='@DEFAULT@'):
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102 profile, client = self.__getClientNProfile(profile_key, 'get items')
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103 return client.items(service, node, max_items, sub_id, client.parent.jid)
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104
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105 def getOptions(self, service, nodeIdentifier, subscriber, subscriptionIdentifier=None, profile_key='@DEFAULT@'):
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106 profile, client = self.__getClientNProfile(profile_key, 'get options')
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107 return client.getOptions(service, nodeIdentifier, subscriber, subscriptionIdentifier)
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108
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109 def setOptions(self, service, nodeIdentifier, subscriber, options, subscriptionIdentifier=None, profile_key='@DEFAULT@'):
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110 profile, client = self.__getClientNProfile(profile_key, 'set options')
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111 return client.setOptions(service, nodeIdentifier, subscriber, options, subscriptionIdentifier)
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112
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113 def createNode(self, service, nodeIdentifier, options, profile_key='@DEFAULT@'):
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114 profile, client = self.__getClientNProfile(profile_key, 'create node')
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115 return client.createNode(service, nodeIdentifier, options)
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116
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117 def deleteNode(self, service, nodeIdentifier, profile_key='@DEFAULT@'):
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118 profile, client = self.__getClientNProfile(profile_key, 'delete node')
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119 return client.deleteNode(service, nodeIdentifier)
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120
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121 def retractItems(self, service, nodeIdentifier, itemIdentifiers, profile_key='@DEFAULT@'):
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122 profile, client = self.__getClientNProfile(profile_key, 'retract items')
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123 return client.retractItems(service, nodeIdentifier, itemIdentifiers)
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124
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125 def subscribe(self, service, nodeIdentifier, sub_jid=None, options=None, profile_key='@DEFAULT@'):
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126 profile, client = self.__getClientNProfile(profile_key, 'subscribe node')
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127 return client.subscribe(service, nodeIdentifier, sub_jid or client.parent.jid.userhostJID(), options=options)
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128
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129
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130 class SatPubSubClient(pubsub.PubSubClient):
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131 implements(disco.IDisco)
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132
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133 def __init__(self, host, parent_plugin):
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134 self.host = host
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135 self.parent_plugin = parent_plugin
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136 pubsub.PubSubClient.__init__(self)
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137
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138 def connectionInitialized(self):
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139 pubsub.PubSubClient.connectionInitialized(self)
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140
745
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141 # XXX: this should be done in wokkel
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142 def retractItems(self, service, nodeIdentifier, itemIdentifiers, sender=None):
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143 """
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144 Retract items from a publish subscribe node.
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145
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146 @param service: The publish subscribe service to delete the node from.
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147 @type service: L{JID<twisted.words.protocols.jabber.jid.JID>}
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148 @param nodeIdentifier: The identifier of the node.
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149 @type nodeIdentifier: C{unicode}
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150 @param itemIdentifiers: Identifiers of the items to be retracted.
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151 @type itemIdentifiers: C{set}
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152 """
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153 request = PubSubRequest('retract')
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154 request.recipient = service
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155 request.nodeIdentifier = nodeIdentifier
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156 request.itemIdentifiers = itemIdentifiers
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157 request.sender = sender
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158 return request.send(self.xmlstream)
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159
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160 def itemsReceived(self, event):
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161 if not self.host.trigger.point("PubSubItemsReceived", event, self.parent.profile):
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162 return
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163 for node in self.parent_plugin.managedNodes:
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164 if event.nodeIdentifier == node[0]:
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165 node[1](event, self.parent.profile)
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166
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167 def deleteReceived(self, event):
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168 #TODO: manage delete event
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169 debug(_("Publish node deleted"))
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170
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171 # def purgeReceived(self, event):
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172
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173
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174
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175 def getDiscoInfo(self, requestor, target, nodeIdentifier=''):
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176 _disco_info = []
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177 self.host.trigger.point("PubSub Disco Info", _disco_info, self.parent.profile)
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178 return _disco_info
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179
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180 def getDiscoItems(self, requestor, target, nodeIdentifier=''):
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181 return []