annotate src/plugins/plugin_xep_0060.py @ 853:c2f6ada7858f

core (sqlite): automatic database update: - new Updater class check database consistency (by calculating a hash on the .schema), and updates base if necessary - database now has a version (1 for current, 0 will be for 0.3's database), for each change this version will be increased - creation statements and update statements are in the form of dict of dict with tuples. There is a help text at the top of the module to explain how it works - if we are on a development version, the updater try to update the database automaticaly (without deleting table or columns). The Updater.generateUpdateData method can be used to ease the creation of update data (i.e. the dictionary at the top, see the one for the key 1 for an example). - if there is an inconsistency, an exception is raised, and a message indicate the SQL statements that should fix the situation. - well... this is rather complicated, a KISS method would maybe have been better. The future will say if we need to simplify it :-/ - new DatabaseError exception
author Goffi <goffi@goffi.org>
date Sun, 23 Feb 2014 23:30:32 +0100
parents 1fe00f0c9a91
children a7b2aacf22ac
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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, 2014 Jérôme Poisson (goffi@goffi.org)
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6
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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 sat.core.i18n import _
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21 from logging import debug, info, error
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22 from wokkel.pubsub import PubSubRequest
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23 from wokkel import disco, pubsub
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24 from zope.interface import implements
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25
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26 PLUGIN_INFO = {
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27 "name": "Publish-Subscribe",
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28 "import_name": "XEP-0060",
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29 "type": "XEP",
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30 "protocols": ["XEP-0060"],
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31 "dependencies": [],
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32 "main": "XEP_0060",
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33 "handler": "yes",
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34 "description": _("""Implementation of PubSub Protocol""")
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35 }
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37
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38 class XEP_0060(object):
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39 OPT_ACCESS_MODEL = 'pubsub#access_model'
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40 OPT_PERSIST_ITEMS = 'pubsub#persist_items'
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41 OPT_MAX_ITEMS = 'pubsub#max_items'
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42 OPT_DELIVER_PAYLOADS = 'pubsub#deliver_payloads'
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43 OPT_SEND_ITEM_SUBSCRIBE = 'pubsub#send_item_subscribe'
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44 OPT_NODE_TYPE = 'pubsub#node_type'
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45 OPT_SUBSCRIPTION_TYPE = 'pubsub#subscription_type'
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46 OPT_SUBSCRIPTION_DEPTH = 'pubsub#subscription_depth'
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47 OPT_ROSTER_GROUPS_ALLOWED = 'pubsub#roster_groups_allowed'
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48 OPT_PUBLISH_MODEL = 'pubsub#publish_model'
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50 def __init__(self, host):
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51 info(_("PubSub plugin initialization"))
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52 self.host = host
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53 self.managedNodes = []
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54 self.clients = {}
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55 """host.bridge.addMethod("getItems", ".plugin", in_sign='ssa{ss}s', out_sign='as', method=self.getItems,
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56 async = True,
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57 doc = { 'summary':'retrieve items',
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58 'param_0':'service: pubsub service',
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59 'param_1':'node: node identifier',
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60 'param_2':'\n'.join(['options: can be:',
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61 '- max_items: see XEP-0060 #6.5.7',
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62 '- sub_id: subscription identifier, see XEP-0060 #7.2.2.2']),
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63 'param_3':'%(doc_profile)s',
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64 'return':'array of raw XML (content of the items)'
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65 })"""
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67 def getHandler(self, profile):
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68 self.clients[profile] = SatPubSubClient(self.host, self)
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69 return self.clients[profile]
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71 def addManagedNode(self, node_name, callback):
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72 """Add a handler for a namespace
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73 @param namespace: NS of the handler (will appear in disco info)
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74 @param callback: method to call when the handler is found
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75 @param profile: profile which manage this handler"""
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76 self.managedNodes.append((node_name, callback))
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77
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78 def __getClientNProfile(self, profile_key, action='do pusbsub'):
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79 """Return a tuple of (client, profile)
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80 raise error when the profile doesn't exists
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81 @param profile_key: as usual :)
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82 @param action: text of action to show in case of error"""
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83 profile = self.host.memory.getProfileName(profile_key)
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84 if not profile:
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85 err_mess = _('Trying to %(action)s with an unknown profile key [%(profile_key)s]') % {
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86 'action': action,
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87 'profile_key': profile_key}
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88 error(err_mess)
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89 raise Exception(err_mess)
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90 try:
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91 client = self.clients[profile]
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92 except KeyError:
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93 err_mess = _('INTERNAL ERROR: no handler for required profile')
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94 error(err_mess)
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95 raise Exception(err_mess)
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96 return profile, client
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97
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98 def publish(self, service, nodeIdentifier, items=None, profile_key='@DEFAULT@'):
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99 profile, client = self.__getClientNProfile(profile_key, 'publish item')
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100 return client.publish(service, nodeIdentifier, items, client.parent.jid)
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101
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102 def getItems(self, service, node, max_items=None, sub_id=None, profile_key='@DEFAULT@'):
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103 profile, client = self.__getClientNProfile(profile_key, 'get items')
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104 return client.items(service, node, max_items, sub_id, client.parent.jid)
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105
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106 def getOptions(self, service, nodeIdentifier, subscriber, subscriptionIdentifier=None, profile_key='@DEFAULT@'):
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107 profile, client = self.__getClientNProfile(profile_key, 'get options')
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108 return client.getOptions(service, nodeIdentifier, subscriber, subscriptionIdentifier)
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109
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110 def setOptions(self, service, nodeIdentifier, subscriber, options, subscriptionIdentifier=None, profile_key='@DEFAULT@'):
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111 profile, client = self.__getClientNProfile(profile_key, 'set options')
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112 return client.setOptions(service, nodeIdentifier, subscriber, options, subscriptionIdentifier)
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113
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114 def createNode(self, service, nodeIdentifier, options, profile_key='@DEFAULT@'):
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115 profile, client = self.__getClientNProfile(profile_key, 'create node')
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116 return client.createNode(service, nodeIdentifier, options)
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117
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118 def deleteNode(self, service, nodeIdentifier, profile_key='@DEFAULT@'):
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119 profile, client = self.__getClientNProfile(profile_key, 'delete node')
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120 return client.deleteNode(service, nodeIdentifier)
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121
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122 def retractItems(self, service, nodeIdentifier, itemIdentifiers, profile_key='@DEFAULT@'):
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123 profile, client = self.__getClientNProfile(profile_key, 'retract items')
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124 return client.retractItems(service, nodeIdentifier, itemIdentifiers)
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125
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126 def subscribe(self, service, nodeIdentifier, sub_jid=None, options=None, profile_key='@DEFAULT@'):
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127 profile, client = self.__getClientNProfile(profile_key, 'subscribe node')
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128 return client.subscribe(service, nodeIdentifier, sub_jid or client.parent.jid.userhostJID(), options=options)
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129
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130
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131 class SatPubSubClient(pubsub.PubSubClient):
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132 implements(disco.IDisco)
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133
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134 def __init__(self, host, parent_plugin):
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135 self.host = host
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136 self.parent_plugin = parent_plugin
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137 pubsub.PubSubClient.__init__(self)
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138
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139 def connectionInitialized(self):
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140 pubsub.PubSubClient.connectionInitialized(self)
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141
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142 # XXX: this should be done in wokkel
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143 def retractItems(self, service, nodeIdentifier, itemIdentifiers, sender=None):
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144 """
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145 Retract items from a publish subscribe node.
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146
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147 @param service: The publish subscribe service to delete the node from.
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148 @type service: L{JID<twisted.words.protocols.jabber.jid.JID>}
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149 @param nodeIdentifier: The identifier of the node.
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150 @type nodeIdentifier: C{unicode}
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151 @param itemIdentifiers: Identifiers of the items to be retracted.
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152 @type itemIdentifiers: C{set}
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153 """
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154 request = PubSubRequest('retract')
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155 request.recipient = service
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156 request.nodeIdentifier = nodeIdentifier
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157 request.itemIdentifiers = itemIdentifiers
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158 request.sender = sender
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159 return request.send(self.xmlstream)
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160
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161 def itemsReceived(self, event):
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162 if not self.host.trigger.point("PubSubItemsReceived", event, self.parent.profile):
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163 return
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164 for node in self.parent_plugin.managedNodes:
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165 if event.nodeIdentifier == node[0]:
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166 node[1](event, self.parent.profile)
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167
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168 def deleteReceived(self, event):
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169 #TODO: manage delete event
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170 debug(_("Publish node deleted"))
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171
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172 # def purgeReceived(self, event):
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173
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174
283
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175
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176 def getDiscoInfo(self, requestor, target, nodeIdentifier=''):
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177 _disco_info = []
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178 self.host.trigger.point("PubSub Disco Info", _disco_info, self.parent.profile)
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179 return _disco_info
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180
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181 def getDiscoItems(self, requestor, target, nodeIdentifier=''):
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182 return []