Mercurial > libervia-pubsub

annotate idavoll/pubsub.py @ 69:6c0cc9c6caea

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Initial revision
author Ralph Meijer <ralphm@ik.nu>
date Sun, 07 Nov 2004 14:16:37 +0000
parents a3d67cbab9c4
children 5d7a924ebddb
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1 from twisted.protocols.jabber import component,jid
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2 from twisted.xish import utility, domish
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3 from twisted.python import components
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4 from twisted.internet import defer
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5
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6 import backend
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7 import xmpp_error
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8
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9 NS_COMPONENT = 'jabber:component:accept'
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10 NS_PUBSUB = 'http://jabber.org/protocol/pubsub'
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11 NS_PUBSUB_EVENT = NS_PUBSUB + '#event'
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12 NS_PUBSUB_ERRORS = NS_PUBSUB + '#errors'
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14 IQ_GET = '/iq[@type="get"]'
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15 IQ_SET = '/iq[@type="set"]'
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16 PUBSUB_ELEMENT = '/pubsub[@xmlns="' + NS_PUBSUB + '"]'
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17 PUBSUB_GET = IQ_GET + PUBSUB_ELEMENT
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18 PUBSUB_SET = IQ_SET + PUBSUB_ELEMENT
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19 PUBSUB_CREATE = PUBSUB_SET + '/create'
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20 PUBSUB_PUBLISH = PUBSUB_SET + '/publish'
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21 PUBSUB_SUBSCRIBE = PUBSUB_SET + '/subscribe'
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22 PUBSUB_UNSUBSCRIBE = PUBSUB_SET + '/unsubscribe'
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23 PUBSUB_OPTIONS_GET = PUBSUB_GET + '/options'
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24 PUBSUB_OPTIONS_SET = PUBSUB_SET + '/options'
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25 PUBSUB_CONFIGURE_GET = PUBSUB_GET + '/configure'
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26 PUBSUB_CONFIGURE_SET = PUBSUB_SET + '/configure'
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27 PUBSUB_AFFILIATIONS = PUBSUB_GET + '/affiliations'
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29 class Error(Exception):
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30 pubsub_error = None
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31 stanza_error = None
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32 msg = ''
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34 class NotImplemented(Error):
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35 stanza_error = 'feature-not-implemented'
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37 class BadRequest(Error):
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38 stanza_error = 'bad-request'
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39
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40 class OptionsUnavailable(Error):
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41 stanza_error = 'feature-not-implemented'
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42 pubsub_error = 'subscription-options-unavailable'
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43
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44 class SubscriptionOptionsUnavailable(Error):
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45 stanza_error = 'not-acceptable'
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46 pubsub_error = 'subscription-options-unavailable'
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48 class NodeNotConfigurable(Error):
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49 stanza_error = 'feature-not-implemented'
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50 pubsub_error = 'node-not-configurable'
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51
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52 class CreateNodeNotConfigurable(Error):
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53 stanza_error = 'not-acceptable'
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54 pubsub_error = 'node-not-configurable'
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57
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58 error_map = {
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59 backend.NotAuthorized: ('not-authorized', None),
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60 backend.NodeNotFound: ('item-not-found', None),
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61 backend.NoPayloadAllowed: ('bad-request', None),
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62 backend.PayloadExpected: ('bad-request', None),
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63 backend.NoInstantNodes: ('not-acceptable', None),
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64 backend.NodeExists: ('conflict', None),
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65 backend.NotImplemented: ('feature-not-implemented', None),
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66 backend.NotSubscribed: ('not-authorized', 'requestor-not-subscribed'),
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67 }
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68
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69 class Service(component.Service):
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70
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71 __implements__ = component.IService
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72
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73 def __init__(self, backend):
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74 self.backend = backend
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75
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76 def error(self, failure, iq):
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77 try:
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78 e = failure.trap(Error, *error_map.keys())
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79
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80 if e == Error:
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81 stanza_error = failure.value.stanza_error
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82 pubsub_error = failure.value.pubsub_error
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83 msg = ''
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84 else:
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85 stanza_error, pubsub_error = error_map[e]
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86 msg = failure.value.msg
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87
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88 xmpp_error.error_from_iq(iq, stanza_error, msg)
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89 if pubsub_error:
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90 iq.error.addElement((NS_PUBSUB_ERRORS, pubsub_error))
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91 return iq
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92 except:
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93 xmpp_error.error_from_iq(iq, 'internal-server-error')
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94 self.send(iq)
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95 raise
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96
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97 def success(self, result, iq):
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98 iq.swapAttributeValues("to", "from")
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99 iq["type"] = 'result'
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100 iq.children = result or []
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101 return iq
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102
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103 def handler_wrapper(self, handler, iq):
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104 try:
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105 d = handler(iq)
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106 except:
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107 d = defer.fail()
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108
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109 d.addCallback(self.success, iq)
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110 d.addErrback(self.error, iq)
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111 d.addCallback(self.send)
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112 iq.handled = True
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113
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114 class ComponentServiceFromService(Service):
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115
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116 def getIdentities(self, node):
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117 if node:
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118 d = self.backend.get_node_type(node)
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119 d.addCallback(lambda x: [{'category': 'pubsub', 'type': x}])
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120 d.addErrback(lambda x: [])
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121 return d
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122 else:
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123 return defer.succeed({'category': 'pubsub',
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124 'type': 'generic',
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125 'name': 'Generic Pubsub Service'})
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126
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127 def getFeatures(self, node):
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128 features = []
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129
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130 if not node:
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131 if self.backend.supports_publisher_affiliation():
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132 features.append(NS_PUBSUB + "#publisher-affiliation")
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133
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134 if self.backend.supports_outcast_affiliation():
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135 features.append(NS_PUBSUB + "#outcast-affiliation")
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136
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137 if self.backend.supports_persistent_items():
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138 features.append(NS_PUBSUB + "#persistent-items")
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139
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140 return defer.succeed(features)
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141
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142 components.registerAdapter(ComponentServiceFromService, backend.IBackendService, component.IService)
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143
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144 class ComponentServiceFromNotificationService(Service):
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145
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146 def componentConnected(self, xmlstream):
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147 self.backend.register_notifier(self.notify)
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148
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149 def notify(self, object):
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150 node_id = object["node_id"]
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151 items = object["items"]
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152 d = self.backend.get_notification_list(node_id, items)
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153 d.addCallback(self._notify, node_id)
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154
31
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155 def _notify(self, list, node_id):
38
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156 print list
31
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157 for recipient, items in list.items():
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158 self._notify_recipient(recipient, node_id, items)
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159
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160 def _notify_recipient(self, recipient, node_id, itemlist):
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161 message = domish.Element((NS_COMPONENT, "message"))
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162 message["from"] = self.parent.jabberId
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163 message["to"] = recipient
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164 event = message.addElement((NS_PUBSUB_EVENT, "event"))
31
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165 items = event.addElement("items")
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166 items["node"] = node_id
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167 items.children.extend(itemlist)
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168 self.send(message)
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169
31
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170 components.registerAdapter(ComponentServiceFromNotificationService, backend.INotificationService, component.IService)
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171
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172 class ComponentServiceFromPublishService(Service):
4
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173
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174 def componentConnected(self, xmlstream):
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175 xmlstream.addObserver(PUBSUB_PUBLISH, self.onPublish)
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176
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177 def onPublish(self, iq):
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178 self.handler_wrapper(self._onPublish, iq)
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179
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180 def _onPublish(self, iq):
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181 node = iq.pubsub.publish["node"]
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182
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183 items = []
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184 for child in iq.pubsub.publish.children:
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185 if child.__class__ == domish.Element and child.name == 'item':
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186 items.append(child)
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187
31
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188 print items
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189
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190 return self.backend.publish(node, items,
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191 jid.JID(iq["from"]).userhostJID())
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192
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193 components.registerAdapter(ComponentServiceFromPublishService, backend.IPublishService, component.IService)
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194
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195 class ComponentServiceFromSubscriptionService(Service):
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ce3d0db64da1 Implemented basic subscribing.
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196
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197 def componentConnected(self, xmlstream):
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198 xmlstream.addObserver(PUBSUB_SUBSCRIBE, self.onSubscribe)
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199 xmlstream.addObserver(PUBSUB_UNSUBSCRIBE, self.onUnsubscribe)
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200 xmlstream.addObserver(PUBSUB_OPTIONS_GET, self.onOptionsGet)
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201 xmlstream.addObserver(PUBSUB_OPTIONS_SET, self.onOptionsSet)
58
3e2e0040e3e0 Return support for the pubsub#subscribe feature.
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202
3e2e0040e3e0 Return support for the pubsub#subscribe feature.
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203 def getFeatures(self, node):
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204 features = []
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205
3e2e0040e3e0 Return support for the pubsub#subscribe feature.
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206 if not node:
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207 features.append(NS_PUBSUB + "#subscribe")
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208
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209 return defer.succeed(features)
31
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210
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211 def onSubscribe(self, iq):
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212 self.handler_wrapper(self._onSubscribe, iq)
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213
31
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214 def _onSubscribe(self, iq):
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215 if iq.pubsub.options:
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216 raise SubscribeOptionsUnavailable
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217
48
671ead538758 Check for malformed subscription request.
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218 try:
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219 node_id = iq.pubsub.subscribe["node"]
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220 subscriber = jid.JID(iq.pubsub.subscribe["jid"])
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221 except KeyError:
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222 raise BadRequest
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223
31
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224 requestor = jid.JID(iq["from"]).userhostJID()
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225 d = self.backend.subscribe(node_id, subscriber, requestor)
31
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226 d.addCallback(self.return_subscription)
38
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227 return d
7
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228
31
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229 def return_subscription(self, result):
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f6b7a06b8870 Implement retrieving affiliations.
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230 reply = domish.Element((NS_PUBSUB, "pubsub"))
31
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231 entity = reply.addElement("entity")
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232 entity["node"] = result["node"]
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233 entity["jid"] = result["jid"].full()
48
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234 entity["affiliation"] = result["affiliation"] or 'none'
31
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235 entity["subscription"] = result["subscription"]
38
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236 return [reply]
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237
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238 def onUnsubscribe(self, iq):
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239 self.handler_wrapper(self._onUnsubscribe, iq)
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240
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241 def _onUnsubscribe(self, iq):
47
31eb00734cc5 Check for malformed unsubscribe request.
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diff changeset
242 try:
31eb00734cc5 Check for malformed unsubscribe request.
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243 node_id = iq.pubsub.unsubscribe["node"]
48
671ead538758 Check for malformed subscription request.
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244 subscriber = jid.JID(iq.pubsub.unsubscribe["jid"])
47
31eb00734cc5 Check for malformed unsubscribe request.
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diff changeset
245 except KeyError:
31eb00734cc5 Check for malformed unsubscribe request.
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246 raise BadRequest
31eb00734cc5 Check for malformed unsubscribe request.
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diff changeset
247
38
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248 requestor = jid.JID(iq["from"]).userhostJID()
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249 return self.backend.unsubscribe(node_id, subscriber, requestor)
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diff changeset
250
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diff changeset
251 def onOptionsGet(self, iq):
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252 self.handler_wrapper(self._onOptionsGet, iq)
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253
c9ddca3cce20 Change exception classes to include stanza error.
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254 def _onOptionsGet(self, iq):
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255 raise OptionsUnavailable
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diff changeset
256
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257 def onOptionsSet(self, iq):
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diff changeset
258 self.handler_wrapper(self._onOptionsSet, iq)
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diff changeset
259
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diff changeset
260 def _onOptionsSet(self, iq):
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261 raise OptionsUnavailable
23
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diff changeset
262
31
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diff changeset
263 components.registerAdapter(ComponentServiceFromSubscriptionService, backend.ISubscriptionService, component.IService)
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264
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265 class ComponentServiceFromNodeCreationService(Service):
23
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266
68
a3d67cbab9c4 Return deferreds from getFeatures() and getIdentities().
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diff changeset
267 def componentConnected(self, xmlstream):
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diff changeset
268 xmlstream.addObserver(PUBSUB_CREATE, self.onCreate)
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diff changeset
269 xmlstream.addObserver(PUBSUB_CONFIGURE_GET, self.onConfigureGet)
a3d67cbab9c4 Return deferreds from getFeatures() and getIdentities().
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diff changeset
270 xmlstream.addObserver(PUBSUB_CONFIGURE_SET, self.onConfigureSet)
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parents: 60
diff changeset
271
56
55fa890ef60b Match backend's supported_*() methods in getFeatures() of ComponentServiceFromService.
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diff changeset
272 def getFeatures(self, node):
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diff changeset
273 features = []
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diff changeset
274
55fa890ef60b Match backend's supported_*() methods in getFeatures() of ComponentServiceFromService.
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diff changeset
275 if not node:
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276 features.append(NS_PUBSUB + "#create-nodes")
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diff changeset
277
55fa890ef60b Match backend's supported_*() methods in getFeatures() of ComponentServiceFromService.
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diff changeset
278 if self.backend.supports_instant_nodes():
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diff changeset
279 features.append(NS_PUBSUB + "#instant-nodes")
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diff changeset
280
68
a3d67cbab9c4 Return deferreds from getFeatures() and getIdentities().
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diff changeset
281 return defer.succeed(features)
31
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diff changeset
282
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diff changeset
283 def onCreate(self, iq):
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diff changeset
284 self.handler_wrapper(self._onCreate, iq)
23
884268687229 Simplify call chain by mapping incoming requests directly to method
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diff changeset
285
31
fa866793075d Split up implementation in several Services that match the division
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diff changeset
286 def _onCreate(self, iq):
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diff changeset
287 if iq.pubsub.options:
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diff changeset
288 raise CreateNodeNotConfigurable
23
884268687229 Simplify call chain by mapping incoming requests directly to method
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parents: 21
diff changeset
289
56
55fa890ef60b Match backend's supported_*() methods in getFeatures() of ComponentServiceFromService.
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290 node = iq.pubsub.create.getAttribute("node")
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291
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292 owner = jid.JID(iq["from"]).userhostJID()
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293
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294 d = self.backend.create_node(node, owner)
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295 d.addCallback(self.return_create_response, iq)
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296 return d
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297
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298 def return_create_response(self, result, iq):
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299 if iq.pubsub.create["node"] is None:
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300 reply = domish.Element((NS_PUBSUB, 'pubsub'))
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301 entity = reply.addElement('create')
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302 entity['node'] = result['node_id']
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303 return [reply]
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304
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305 def onConfigureGet(self, iq):
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306 self.handler_wrapper(self._onConfigureGet, iq)
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307
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308 def _onConfigureGet(self, iq):
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309 raise NodeNotConfigurable
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310
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311 def onConfigureSet(self, iq):
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312 self.handler_wrapper(self._onConfigureSet, iq)
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313
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314 def _onConfigureSet(self, iq):
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315 raise NodeNotConfigurable
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316
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317 components.registerAdapter(ComponentServiceFromNodeCreationService, backend.INodeCreationService, component.IService)
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318
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319 class ComponentServiceFromAffiliationsService(Service):
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320
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321 def componentConnected(self, xmlstream):
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322 xmlstream.addObserver(PUBSUB_AFFILIATIONS, self.onAffiliations)
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323
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324 def onAffiliations(self, iq):
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325 self.handler_wrapper(self._onAffiliations, iq)
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326
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327 def _onAffiliations(self, iq):
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328 d = self.backend.get_affiliations(jid.JID(iq["from"]).userhostJID())
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329 d.addCallback(self._return_affiliations_response, iq)
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330 return d
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331
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332 def _return_affiliations_response(self, result, iq):
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333 reply = domish.Element((NS_PUBSUB, 'pubsub'))
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334 affiliations = reply.addElement('affiliations')
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335 for r in result:
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336 entity = affiliations.addElement('entity')
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337 entity['node'] = r['node']
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338 entity['jid'] = r['jid'].full()
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339 entity['affiliation'] = r['affiliation'] or 'none'
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340 entity['subscription'] = r['subscription'] or 'none'
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341 return [reply]
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342
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343 components.registerAdapter(ComponentServiceFromAffiliationsService, backend.IAffiliationsService, component.IService)