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annotate src/plugins/plugin_xep_0060.py @ 303:2b52a5da0978

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plugin XEP_0277: microblog access model can now be changed plugin XEP_0060: added some method to manage pubsub nodes
author Goffi <goffi@goffi.org>
date Thu, 24 Mar 2011 21:15:26 +0100
parents e33b3a777f10
children 53adec87d1d7
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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 Publish-Subscribe (xep-0060)
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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
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24 from twisted.words.protocols.jabber import client, 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
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28 from wokkel import disco, iwokkel, pubsub
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29
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30 from zope.interface import implements
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31
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32 PLUGIN_INFO = {
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33 "name": "Publish-Subscribe",
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34 "import_name": "XEP-0060",
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35 "type": "XEP",
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36 "protocols": ["XEP-0060"],
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37 "dependencies": [],
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38 "main": "XEP_0060",
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39 "handler": "yes",
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40 "description": _("""Implementation of PubSub Protocol""")
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41 }
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42
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43 class XEP_0060():
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44
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45 def __init__(self, host):
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46 info(_("PubSub plugin initialization"))
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47 self.host = host
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48 self.managedNodes=[]
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49 self.clients={}
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50 """host.bridge.addMethod("getItems", ".communication", in_sign='ssa{ss}s', out_sign='as', method=self.getItems,
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51 async = True,
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52 doc = { 'summary':'retrieve items',
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53 'param_0':'service: pubsub service',
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54 'param_1':'node: node identifier',
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55 'param_2':'\n'.join(['options: can be:',
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56 '- max_items: see XEP-0060 #6.5.7',
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57 '- sub_id: subscription identifier, see XEP-0060 #7.2.2.2']),
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58 'param_3':'%(doc_profile)s',
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59 'return':'array of raw XML (content of the items)'
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60 })"""
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61
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62 def getHandler(self, profile):
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63 self.clients[profile] = SatPubSubClient(self.host, self)
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64 return self.clients[profile]
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65
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66 def addManagedNode(self, node_name, callback):
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67 """Add a handler for a namespace
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68 @param namespace: NS of the handler (will appear in disco info)
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69 @param callback: method to call when the handler is found
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70 @param profile: profile which manage this handler"""
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71 self.managedNodes.append((node_name, callback))
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72
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73 def __getClientNProfile(self, profile_key, action='do pusbsub'):
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74 """Return a tuple of (client, profile)
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75 raise error when the profile doesn't exists
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76 @param profile_key: as usual :)
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77 @param action: text of action to show in case of error"""
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78 profile = self.host.memory.getProfileName(profile_key)
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79 if not profile:
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80 err_mess = _('Trying to %(action)s with an unknown profile key [%(profile_key)s]') % {
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81 'action':action,
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82 'profile_key':profile_key}
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83 error(err_mess)
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84 raise Exception(err_mess)
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85 try:
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86 client = self.clients[profile]
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87 except KeyError:
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88 err_mess = _('INTERNAL ERROR: no handler for required profile')
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89 error(err_mess)
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90 raise Exception(err_mess)
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91 return profile, client
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92
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93 def publish(self, service, nodeIdentifier, items=None, profile_key='@DEFAULT@'):
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94 profile,client = self.__getClientNProfile(profile_key, 'publish item')
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95 return client.publish(service, nodeIdentifier, items, client.parent.jid)
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96
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97 def getItems(self, service, node, max_items=None, sub_id=None, profile_key='@DEFAULT@'):
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98 profile,client = self.__getClientNProfile(profile_key, 'get items')
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99 return client.items(service, node, max_items, sub_id, client.parent.jid)
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100
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101 def getOptions(self, service, nodeIdentifier, subscriber, subscriptionIdentifier=None, profile_key='@DEFAULT@'):
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102 profile,client = self.__getClientNProfile(profile_key, 'get options')
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103 return client.getOptions(service, nodeIdentifier, subscriber, subscriptionIdentifier)
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104
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105 def setOptions(self, service, nodeIdentifier, subscriber, options, subscriptionIdentifier=None, profile_key='@DEFAULT@'):
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106 profile,client = self.__getClientNProfile(profile_key, 'set options')
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107 return client.setOptions(service, nodeIdentifier, subscriber, options, subscriptionIdentifier)
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108
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109 def createNode(self, service, nodeIdentifier, options, profile_key='@DEFAULT@'):
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110 profile,client = self.__getClientNProfile(profile_key, 'create node')
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111 return client.createNode(service, nodeIdentifier, options)
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112
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113 def deleteNode(self, service, nodeIdentifier, profile_key='@DEFAULT@'):
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114 profile,client = self.__getClientNProfile(profile_key, 'delete node')
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115 return client.deleteNode(service, nodeIdentifier)
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116
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117
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118 class SatPubSubClient(pubsub.PubSubClient):
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119 implements(disco.IDisco)
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120
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121 def __init__(self, host, parent_plugin):
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122 self.host=host
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123 self.parent_plugin = parent_plugin
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124 pubsub.PubSubClient.__init__(self)
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125
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126 def connectionInitialized(self):
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127 pubsub.PubSubClient.connectionInitialized(self)
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128
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129 def itemsReceived(self, event):
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130 for node in self.parent_plugin.managedNodes:
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131 if event.nodeIdentifier == node[0]:
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132 return node[1](event, self.parent.profile)
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133
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134 def deleteReceived(self, event):
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135 #TODO: manage delete event
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136 debug(_("Publish node deleted"))
283
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137
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138 def purgeReceived(self, event):
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139 import pdb
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140 pdb.set_trace()
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141
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142 def getDiscoInfo(self, requestor, target, nodeIdentifier=''):
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143 _disco_info = []
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144 self.host.trigger.point("PubSub Disco Info", _disco_info, self.parent.profile)
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145 return _disco_info
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146
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147 def getDiscoItems(self, requestor, target, nodeIdentifier=''):
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148 return []
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149