annotate sat_pubsub/gateway.py @ 311:a776544d84e5

copyright update
author Goffi <goffi@goffi.org>
date Sun, 03 Jan 2016 18:28:34 +0100
parents 4115999d85e9
children 5d7c3787672e
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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 Copyright (c) 2003-2011 Ralph Meijer
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a776544d84e5 copyright update
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6 Copyright (c) 2012-2016 Jérôme Poisson
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7
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8
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9 This program is free software: you can redistribute it and/or modify
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10 it under the terms of the GNU Affero General Public License as published by
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11 the Free Software Foundation, either version 3 of the License, or
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12 (at your option) any later version.
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13
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14 This program is distributed in the hope that it will be useful,
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15 but WITHOUT ANY WARRANTY; without even the implied warranty of
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16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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17 GNU Affero General Public License for more details.
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18
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19 You should have received a copy of the GNU Affero General Public License
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20 along with this program. If not, see <http://www.gnu.org/licenses/>.
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21 --
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22
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23 This program is based on Idavoll (http://idavoll.ik.nu/),
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24 originaly written by Ralph Meijer (http://ralphm.net/blog/)
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25 It is sublicensed under AGPL v3 (or any later version) as allowed by the original
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26 license.
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27
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28 --
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29
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30 Here is a copy of the original license:
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31
235
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32 Copyright (c) 2003-2011 Ralph Meijer
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33
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34 Permission is hereby granted, free of charge, to any person obtaining
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35 a copy of this software and associated documentation files (the
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36 "Software"), to deal in the Software without restriction, including
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37 without limitation the rights to use, copy, modify, merge, publish,
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38 distribute, sublicense, and/or sell copies of the Software, and to
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39 permit persons to whom the Software is furnished to do so, subject to
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40 the following conditions:
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41
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42 The above copyright notice and this permission notice shall be
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43 included in all copies or substantial portions of the Software.
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44
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45 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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46 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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47 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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48 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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49 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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50 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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51 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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52
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53 """
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54
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55 """
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56 Web resources and client for interacting with pubsub services.
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57 """
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58
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59 import mimetools
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60 from time import gmtime, strftime
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61 from StringIO import StringIO
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62 import urllib
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63 import urlparse
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64
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65 import simplejson
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66
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67 from twisted.application import service
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68 from twisted.internet import defer, reactor
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69 from twisted.python import log
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70 from twisted.web import client, http, resource, server
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71 from twisted.web.error import Error
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72 from twisted.words.protocols.jabber.jid import JID
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73 from twisted.words.protocols.jabber.error import StanzaError
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74 from twisted.words.xish import domish
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75
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76 from wokkel.generic import parseXml
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77 from wokkel.pubsub import Item
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78 from wokkel.pubsub import PubSubClient
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79
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80 from sat_pubsub import error
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81
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82 NS_ATOM = 'http://www.w3.org/2005/Atom'
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83 MIME_ATOM_ENTRY = b'application/atom+xml;type=entry'
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84 MIME_ATOM_FEED = b'application/atom+xml;type=feed'
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85 MIME_JSON = b'application/json'
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86
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87 class XMPPURIParseError(ValueError):
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88 """
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89 Raised when a given XMPP URI couldn't be properly parsed.
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90 """
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91
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92
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93
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94 def getServiceAndNode(uri):
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95 """
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96 Given an XMPP URI, extract the publish subscribe service JID and node ID.
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97 """
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98
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99 try:
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100 scheme, rest = uri.split(':', 1)
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101 except ValueError:
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102 raise XMPPURIParseError("No URI scheme component")
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103
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104 if scheme != 'xmpp':
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105 raise XMPPURIParseError("Unknown URI scheme")
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106
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107 if rest.startswith("//"):
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108 raise XMPPURIParseError("Unexpected URI authority component")
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109
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110 try:
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111 entity, query = rest.split('?', 1)
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112 except ValueError:
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113 entity, query = rest, ''
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114
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115 if not entity:
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116 raise XMPPURIParseError("Empty URI path component")
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117
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118 try:
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119 service = JID(entity)
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120 except Exception, e:
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121 raise XMPPURIParseError("Invalid JID: %s" % e)
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122
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123 params = urlparse.parse_qs(query)
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124
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125 try:
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126 nodeIdentifier = params['node'][0]
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127 except (KeyError, ValueError):
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128 nodeIdentifier = ''
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129
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130 return service, nodeIdentifier
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134 def getXMPPURI(service, nodeIdentifier):
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135 """
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136 Construct an XMPP URI from a service JID and node identifier.
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137 """
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138 return "xmpp:%s?;node=%s" % (service.full(), nodeIdentifier or '')
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139
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141
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142 def _parseContentType(header):
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143 """
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144 Parse a Content-Type header value to a L{mimetools.Message}.
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145
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146 L{mimetools.Message} parses a Content-Type header and makes the
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147 components available with its C{getmaintype}, C{getsubtype}, C{gettype},
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148 C{getplist} and C{getparam} methods.
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149 """
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150 return mimetools.Message(StringIO(b'Content-Type: ' + header))
185
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151
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152
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153
273
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154 def _asyncResponse(render):
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155 """
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156 """
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157 def wrapped(self, request):
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158 def eb(failure):
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159 if failure.check(Error):
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160 err = failure.value
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161 else:
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162 log.err(failure)
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163 err = Error(500)
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164 request.setResponseCode(err.status, err.message)
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165 return err.response
185
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166
273
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167 def finish(result):
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168 if result is server.NOT_DONE_YET:
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169 return
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170
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171 if result:
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172 request.write(result)
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173 request.finish()
185
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174
273
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175 d = defer.maybeDeferred(render, self, request)
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176 d.addErrback(eb)
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177 d.addCallback(finish)
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178
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179 return server.NOT_DONE_YET
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180
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181 return wrapped
185
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182
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183
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184
177
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185 class CreateResource(resource.Resource):
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186 """
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187 A resource to create a publish-subscribe node.
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188 """
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189 def __init__(self, backend, serviceJID, owner):
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190 self.backend = backend
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191 self.serviceJID = serviceJID
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192 self.owner = owner
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193
185
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194
177
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195 http_GET = None
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196
185
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197
273
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198 @_asyncResponse
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199 def render_POST(self, request):
177
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200 """
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201 Respond to a POST request to create a new node.
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202 """
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203
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204 def toResponse(nodeIdentifier):
206
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205 uri = getXMPPURI(self.serviceJID, nodeIdentifier)
273
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206 body = simplejson.dumps({'uri': uri})
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207 request.setHeader(b'Content-Type', MIME_JSON)
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208 return body
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209
198
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210 d = self.backend.createNode(None, self.owner)
177
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211 d.addCallback(toResponse)
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212 return d
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213
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214
185
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215
177
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216 class DeleteResource(resource.Resource):
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217 """
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218 A resource to create a publish-subscribe node.
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219 """
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220 def __init__(self, backend, serviceJID, owner):
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221 self.backend = backend
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222 self.serviceJID = serviceJID
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223 self.owner = owner
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224
185
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225
273
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226 render_GET = None
177
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227
185
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228
273
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229 @_asyncResponse
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230 def render_POST(self, request):
177
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231 """
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232 Respond to a POST request to create a new node.
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233 """
273
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234 def toResponse(result):
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235 request.setResponseCode(http.NO_CONTENT)
209
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236
177
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237 def trapNotFound(failure):
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238 failure.trap(error.NodeNotFound)
273
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239 raise Error(http.NOT_FOUND, "Node not found")
177
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240
273
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241 if not request.args.get('uri'):
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242 raise Error(http.BAD_REQUEST, "No URI given")
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243
274
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244 try:
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245 jid, nodeIdentifier = getServiceAndNode(request.args['uri'][0])
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246 except XMPPURIParseError, e:
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247 raise Error(http.BAD_REQUEST, "Malformed XMPP URI: %s" % e)
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248
177
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249
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250 data = request.content.read()
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251 if data:
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252 params = simplejson.loads(data)
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253 redirectURI = params.get('redirect_uri', None)
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254 else:
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255 redirectURI = None
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256
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257 d = self.backend.deleteNode(nodeIdentifier, self.owner,
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258 redirectURI)
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259 d.addCallback(toResponse)
177
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260 d.addErrback(trapNotFound)
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261 return d
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262
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263
185
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264
177
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265 class PublishResource(resource.Resource):
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266 """
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267 A resource to publish to a publish-subscribe node.
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268 """
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269
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270 def __init__(self, backend, serviceJID, owner):
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271 self.backend = backend
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272 self.serviceJID = serviceJID
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273 self.owner = owner
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274
185
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275
273
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276 render_GET = None
177
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277
185
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278
177
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279 def checkMediaType(self, request):
273
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280 ctype = request.getHeader(b'content-type')
177
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281
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282 if not ctype:
273
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283 request.setResponseCode(http.BAD_REQUEST)
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284
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285 raise Error(http.BAD_REQUEST, b"No specified Media Type")
177
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286
273
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287 message = _parseContentType(ctype)
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288 if (message.maintype != b'application' or
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289 message.subtype != b'atom+xml' or
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290 message.getparam(b'type') != b'entry' or
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291 (message.getparam(b'charset') or b'utf-8') != b'utf-8'):
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292 raise Error(http.UNSUPPORTED_MEDIA_TYPE,
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293 b"Unsupported Media Type: %s" % ctype)
177
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294
185
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295
273
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296 @_asyncResponse
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297 def render_POST(self, request):
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298 """
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299 Respond to a POST request to create a new item.
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300 """
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301
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302 def toResponse(nodeIdentifier):
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303 uri = getXMPPURI(self.serviceJID, nodeIdentifier)
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304 body = simplejson.dumps({'uri': uri})
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305 request.setHeader(b'Content-Type', MIME_JSON)
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306 return body
177
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307
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308 def gotNode(nodeIdentifier, payload):
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309 item = Item(id='current', payload=payload)
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310 d = self.backend.publish(nodeIdentifier, [item], self.owner)
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311 d.addCallback(lambda _: nodeIdentifier)
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312 return d
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313
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314 def getNode():
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315 if request.args.get('uri'):
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316 jid, nodeIdentifier = getServiceAndNode(request.args['uri'][0])
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317 return defer.succeed(nodeIdentifier)
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318 else:
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319 return self.backend.createNode(None, self.owner)
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320
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321 def trapNotFound(failure):
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322 failure.trap(error.NodeNotFound)
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323 raise Error(http.NOT_FOUND, "Node not found")
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324
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325 def trapXMPPURIParseError(failure):
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326 failure.trap(XMPPURIParseError)
273
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327 raise Error(http.BAD_REQUEST,
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328 "Malformed XMPP URI: %s" % failure.value)
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329
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330 self.checkMediaType(request)
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331 payload = parseXml(request.content.read())
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332 d = getNode()
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333 d.addCallback(gotNode, payload)
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334 d.addCallback(toResponse)
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335 d.addErrback(trapNotFound)
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336 d.addErrback(trapXMPPURIParseError)
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337 return d
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338
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339
185
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340
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341 class ListResource(resource.Resource):
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342 def __init__(self, service):
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343 self.service = service
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344
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345
273
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346 @_asyncResponse
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347 def render_GET(self, request):
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348 def responseFromNodes(nodeIdentifiers):
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349 body = simplejson.dumps(nodeIdentifiers)
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350 request.setHeader(b'Content-Type', MIME_JSON)
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351 return body
185
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352
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353 d = self.service.getNodes()
185
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354 d.addCallback(responseFromNodes)
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355 return d
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356
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357
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358
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359 # Service for subscribing to remote XMPP Pubsub nodes and web resources
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360
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361 def extractAtomEntries(items):
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362 """
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363 Extract atom entries from a list of publish-subscribe items.
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364
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365 @param items: List of L{domish.Element}s that represent publish-subscribe
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366 items.
185
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367 @type items: C{list}
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368 """
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369
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370 atomEntries = []
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371
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372 for item in items:
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373 # ignore non-items (i.e. retractions)
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374 if item.name != 'item':
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375 continue
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376
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377 atomEntry = None
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378 for element in item.elements():
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379 # extract the first element that is an atom entry
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380 if element.uri == NS_ATOM and element.name == 'entry':
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381 atomEntry = element
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382 break
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383
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384 if atomEntry:
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385 atomEntries.append(atomEntry)
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386
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387 return atomEntries
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388
198
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389
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390
185
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391 def constructFeed(service, nodeIdentifier, entries, title):
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392 nodeURI = getXMPPURI(service, nodeIdentifier)
185
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393 now = strftime("%Y-%m-%dT%H:%M:%SZ", gmtime())
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394
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395 # Collect the received entries in a feed
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396 feed = domish.Element((NS_ATOM, 'feed'))
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397 feed.addElement('title', content=title)
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398 feed.addElement('id', content=nodeURI)
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399 feed.addElement('updated', content=now)
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400
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401 for entry in entries:
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402 feed.addChild(entry)
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403
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404 return feed
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405
198
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406
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407
185
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408 class RemoteSubscriptionService(service.Service, PubSubClient):
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409 """
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410 Service for subscribing to remote XMPP Publish-Subscribe nodes.
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411
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412 Subscriptions are created with a callback HTTP URI that is POSTed
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413 to with the received items in notifications.
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414 """
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415
204
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416 def __init__(self, jid, storage):
185
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417 self.jid = jid
204
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418 self.storage = storage
185
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419
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420
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421 def trapNotFound(self, failure):
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422 failure.trap(StanzaError)
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423
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424 if failure.value.condition == 'item-not-found':
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425 raise error.NodeNotFound()
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426 else:
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427 return failure
185
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428
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429
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430 def subscribeCallback(self, jid, nodeIdentifier, callback):
204
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431 """
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432 Subscribe a callback URI.
185
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433
204
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434 This registers a callback URI to be called when a notification is
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435 received for the given node.
185
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436
204
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437 If this is the first callback registered for this node, the gateway
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438 will subscribe to the node. Otherwise, the most recently published item
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diff changeset
439 for this node is retrieved and, if present, the newly registered
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
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parents: 203
diff changeset
440 callback will be called with that item.
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parents: 203
diff changeset
441 """
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parents: 203
diff changeset
442
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parents: 203
diff changeset
443 def callbackForLastItem(items):
187
69cdd8c6a431 Make sure second subscribers through HTTP also get a notification of the
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parents: 186
diff changeset
444 atomEntries = extractAtomEntries(items)
69cdd8c6a431 Make sure second subscribers through HTTP also get a notification of the
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parents: 186
diff changeset
445
69cdd8c6a431 Make sure second subscribers through HTTP also get a notification of the
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parents: 186
diff changeset
446 if not atomEntries:
69cdd8c6a431 Make sure second subscribers through HTTP also get a notification of the
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parents: 186
diff changeset
447 return
69cdd8c6a431 Make sure second subscribers through HTTP also get a notification of the
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parents: 186
diff changeset
448
69cdd8c6a431 Make sure second subscribers through HTTP also get a notification of the
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parents: 186
diff changeset
449 self._postTo([callback], jid, nodeIdentifier, atomEntries[0],
273
6ba0d6def7f5 Use twisted.web instead of web2, initial tests.
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parents: 255
diff changeset
450 MIME_ATOM_ENTRY)
187
69cdd8c6a431 Make sure second subscribers through HTTP also get a notification of the
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parents: 186
diff changeset
451
204
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
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parents: 203
diff changeset
452 def subscribeOrItems(hasCallbacks):
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parents: 203
diff changeset
453 if hasCallbacks:
224
55b45c7dccb4 Upon gateway subscription to the root node, don't retrieve items.
Ralph Meijer <ralphm@ik.nu>
parents: 214
diff changeset
454 if not nodeIdentifier:
55b45c7dccb4 Upon gateway subscription to the root node, don't retrieve items.
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parents: 214
diff changeset
455 return None
204
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parents: 203
diff changeset
456 d = self.items(jid, nodeIdentifier, 1)
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parents: 203
diff changeset
457 d.addCallback(callbackForLastItem)
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 203
diff changeset
458 else:
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 203
diff changeset
459 d = self.subscribe(jid, nodeIdentifier, self.jid)
185
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
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parents: 183
diff changeset
460
204
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
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parents: 203
diff changeset
461 d.addErrback(self.trapNotFound)
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parents: 203
diff changeset
462 return d
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 203
diff changeset
463
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 203
diff changeset
464 d = self.storage.hasCallbacks(jid, nodeIdentifier)
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
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parents: 203
diff changeset
465 d.addCallback(subscribeOrItems)
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
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parents: 203
diff changeset
466 d.addCallback(lambda _: self.storage.addCallback(jid, nodeIdentifier,
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
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parents: 203
diff changeset
467 callback))
185
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
468 return d
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
469
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
470
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
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parents: 183
diff changeset
471 def unsubscribeCallback(self, jid, nodeIdentifier, callback):
204
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
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parents: 203
diff changeset
472 """
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
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parents: 203
diff changeset
473 Unsubscribe a callback.
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
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parents: 203
diff changeset
474
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 203
diff changeset
475 If this was the last registered callback for this node, the
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 203
diff changeset
476 gateway will unsubscribe from node.
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 203
diff changeset
477 """
185
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
478
204
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 203
diff changeset
479 def cb(last):
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 203
diff changeset
480 if last:
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 203
diff changeset
481 return self.unsubscribe(jid, nodeIdentifier, self.jid)
185
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
482
204
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 203
diff changeset
483 d = self.storage.removeCallback(jid, nodeIdentifier, callback)
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 203
diff changeset
484 d.addCallback(cb)
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 203
diff changeset
485 return d
185
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
486
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
487
203
2c46e6664680 Match wokkel API change for PubSubClient.
Ralph Meijer <ralphm@ik.nu>
parents: 198
diff changeset
488 def itemsReceived(self, event):
185
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
489 """
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
490 Fire up HTTP client to do callback
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
491 """
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
492
203
2c46e6664680 Match wokkel API change for PubSubClient.
Ralph Meijer <ralphm@ik.nu>
parents: 198
diff changeset
493 atomEntries = extractAtomEntries(event.items)
206
274a45d2a5ab Implement root collection that includes all leaf nodes.
Ralph Meijer <ralphm@ik.nu>
parents: 204
diff changeset
494 service = event.sender
274a45d2a5ab Implement root collection that includes all leaf nodes.
Ralph Meijer <ralphm@ik.nu>
parents: 204
diff changeset
495 nodeIdentifier = event.nodeIdentifier
274a45d2a5ab Implement root collection that includes all leaf nodes.
Ralph Meijer <ralphm@ik.nu>
parents: 204
diff changeset
496 headers = event.headers
185
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
497
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
498 # Don't notify if there are no atom entries
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
499 if not atomEntries:
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
500 return
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
501
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
502 if len(atomEntries) == 1:
273
6ba0d6def7f5 Use twisted.web instead of web2, initial tests.
Ralph Meijer <ralphm@ik.nu>
parents: 255
diff changeset
503 contentType = MIME_ATOM_ENTRY
185
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
504 payload = atomEntries[0]
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
505 else:
273
6ba0d6def7f5 Use twisted.web instead of web2, initial tests.
Ralph Meijer <ralphm@ik.nu>
parents: 255
diff changeset
506 contentType = MIME_ATOM_FEED
206
274a45d2a5ab Implement root collection that includes all leaf nodes.
Ralph Meijer <ralphm@ik.nu>
parents: 204
diff changeset
507 payload = constructFeed(service, nodeIdentifier, atomEntries,
185
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
508 title='Received item collection')
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
509
206
274a45d2a5ab Implement root collection that includes all leaf nodes.
Ralph Meijer <ralphm@ik.nu>
parents: 204
diff changeset
510 self.callCallbacks(service, nodeIdentifier, payload, contentType)
274a45d2a5ab Implement root collection that includes all leaf nodes.
Ralph Meijer <ralphm@ik.nu>
parents: 204
diff changeset
511
274a45d2a5ab Implement root collection that includes all leaf nodes.
Ralph Meijer <ralphm@ik.nu>
parents: 204
diff changeset
512 if 'Collection' in headers:
274a45d2a5ab Implement root collection that includes all leaf nodes.
Ralph Meijer <ralphm@ik.nu>
parents: 204
diff changeset
513 for collection in headers['Collection']:
274a45d2a5ab Implement root collection that includes all leaf nodes.
Ralph Meijer <ralphm@ik.nu>
parents: 204
diff changeset
514 nodeIdentifier = collection or ''
274a45d2a5ab Implement root collection that includes all leaf nodes.
Ralph Meijer <ralphm@ik.nu>
parents: 204
diff changeset
515 self.callCallbacks(service, nodeIdentifier, payload,
274a45d2a5ab Implement root collection that includes all leaf nodes.
Ralph Meijer <ralphm@ik.nu>
parents: 204
diff changeset
516 contentType)
185
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
517
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
518
203
2c46e6664680 Match wokkel API change for PubSubClient.
Ralph Meijer <ralphm@ik.nu>
parents: 198
diff changeset
519 def deleteReceived(self, event):
185
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
520 """
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
521 Fire up HTTP client to do callback
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
522 """
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
523
206
274a45d2a5ab Implement root collection that includes all leaf nodes.
Ralph Meijer <ralphm@ik.nu>
parents: 204
diff changeset
524 service = event.sender
274a45d2a5ab Implement root collection that includes all leaf nodes.
Ralph Meijer <ralphm@ik.nu>
parents: 204
diff changeset
525 nodeIdentifier = event.nodeIdentifier
209
7f3ffb7a1a9e Add support for node deletion with redirect.
Ralph Meijer <ralphm@ik.nu>
parents: 206
diff changeset
526 redirectURI = event.redirectURI
7f3ffb7a1a9e Add support for node deletion with redirect.
Ralph Meijer <ralphm@ik.nu>
parents: 206
diff changeset
527 self.callCallbacks(service, nodeIdentifier, eventType='DELETED',
7f3ffb7a1a9e Add support for node deletion with redirect.
Ralph Meijer <ralphm@ik.nu>
parents: 206
diff changeset
528 redirectURI=redirectURI)
185
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
529
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
530
187
69cdd8c6a431 Make sure second subscribers through HTTP also get a notification of the
Ralph Meijer <ralphm@ik.nu>
parents: 186
diff changeset
531 def _postTo(self, callbacks, service, nodeIdentifier,
209
7f3ffb7a1a9e Add support for node deletion with redirect.
Ralph Meijer <ralphm@ik.nu>
parents: 206
diff changeset
532 payload=None, contentType=None, eventType=None,
7f3ffb7a1a9e Add support for node deletion with redirect.
Ralph Meijer <ralphm@ik.nu>
parents: 206
diff changeset
533 redirectURI=None):
204
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 203
diff changeset
534
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 203
diff changeset
535 if not callbacks:
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 203
diff changeset
536 return
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 203
diff changeset
537
185
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
538 postdata = None
206
274a45d2a5ab Implement root collection that includes all leaf nodes.
Ralph Meijer <ralphm@ik.nu>
parents: 204
diff changeset
539 nodeURI = getXMPPURI(service, nodeIdentifier)
185
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
540 headers = {'Referer': nodeURI.encode('utf-8'),
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
541 'PubSub-Service': service.full().encode('utf-8')}
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
542
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
543 if payload:
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
544 postdata = payload.toXml().encode('utf-8')
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
545 if contentType:
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
546 headers['Content-Type'] = "%s;charset=utf-8" % contentType
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
547
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
548 if eventType:
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
549 headers['Event'] = eventType
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
550
209
7f3ffb7a1a9e Add support for node deletion with redirect.
Ralph Meijer <ralphm@ik.nu>
parents: 206
diff changeset
551 if redirectURI:
7f3ffb7a1a9e Add support for node deletion with redirect.
Ralph Meijer <ralphm@ik.nu>
parents: 206
diff changeset
552 headers['Link'] = '<%s>; rel=alternate' % (
7f3ffb7a1a9e Add support for node deletion with redirect.
Ralph Meijer <ralphm@ik.nu>
parents: 206
diff changeset
553 redirectURI.encode('utf-8'),
7f3ffb7a1a9e Add support for node deletion with redirect.
Ralph Meijer <ralphm@ik.nu>
parents: 206
diff changeset
554 )
7f3ffb7a1a9e Add support for node deletion with redirect.
Ralph Meijer <ralphm@ik.nu>
parents: 206
diff changeset
555
185
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
556 def postNotification(callbackURI):
214
3c45208678fa Make 204 responses not result in failure.
Ralph Meijer <ralphm@ik.nu>
parents: 211
diff changeset
557 f = getPageWithFactory(str(callbackURI),
185
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
558 method='POST',
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
559 postdata=postdata,
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
560 headers=headers)
214
3c45208678fa Make 204 responses not result in failure.
Ralph Meijer <ralphm@ik.nu>
parents: 211
diff changeset
561 d = f.deferred
185
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
562 d.addErrback(log.err)
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
563
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
564 for callbackURI in callbacks:
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
565 reactor.callLater(0, postNotification, callbackURI)
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
566
204
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 203
diff changeset
567
187
69cdd8c6a431 Make sure second subscribers through HTTP also get a notification of the
Ralph Meijer <ralphm@ik.nu>
parents: 186
diff changeset
568 def callCallbacks(self, service, nodeIdentifier,
209
7f3ffb7a1a9e Add support for node deletion with redirect.
Ralph Meijer <ralphm@ik.nu>
parents: 206
diff changeset
569 payload=None, contentType=None, eventType=None,
7f3ffb7a1a9e Add support for node deletion with redirect.
Ralph Meijer <ralphm@ik.nu>
parents: 206
diff changeset
570 redirectURI=None):
204
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 203
diff changeset
571
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 203
diff changeset
572 def eb(failure):
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 203
diff changeset
573 failure.trap(error.NoCallbacks)
187
69cdd8c6a431 Make sure second subscribers through HTTP also get a notification of the
Ralph Meijer <ralphm@ik.nu>
parents: 186
diff changeset
574
206
274a45d2a5ab Implement root collection that includes all leaf nodes.
Ralph Meijer <ralphm@ik.nu>
parents: 204
diff changeset
575 # No callbacks were registered for this node. Unsubscribe?
187
69cdd8c6a431 Make sure second subscribers through HTTP also get a notification of the
Ralph Meijer <ralphm@ik.nu>
parents: 186
diff changeset
576
204
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 203
diff changeset
577 d = self.storage.getCallbacks(service, nodeIdentifier)
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 203
diff changeset
578 d.addCallback(self._postTo, service, nodeIdentifier, payload,
209
7f3ffb7a1a9e Add support for node deletion with redirect.
Ralph Meijer <ralphm@ik.nu>
parents: 206
diff changeset
579 contentType, eventType, redirectURI)
204
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 203
diff changeset
580 d.addErrback(eb)
b4bf0a5ce50d Implement storage facilities for the HTTP gateway.
Ralph Meijer <ralphm@ik.nu>
parents: 203
diff changeset
581 d.addErrback(log.err)
187
69cdd8c6a431 Make sure second subscribers through HTTP also get a notification of the
Ralph Meijer <ralphm@ik.nu>
parents: 186
diff changeset
582
185
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diff changeset
583
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diff changeset
584
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585 class RemoteSubscribeBaseResource(resource.Resource):
177
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586 """
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parents:
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587 Base resource for remote pubsub node subscription and unsubscription.
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588
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589 This resource accepts POST request with a JSON document that holds
faf1c9bc2612 Add HTTP gateway in a separate plugin.
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590 a dictionary with the keys C{uri} and C{callback} that respectively map
faf1c9bc2612 Add HTTP gateway in a separate plugin.
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591 to the XMPP URI of the publish-subscribe node and the callback URI.
faf1c9bc2612 Add HTTP gateway in a separate plugin.
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parents:
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592
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parents:
diff changeset
593 This class should be inherited with L{serviceMethod} overridden.
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parents:
diff changeset
594
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parents:
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595 @cvar serviceMethod: The name of the method to be called with
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596 the JID of the pubsub service, the node identifier
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597 and the callback URI as received in the HTTP POST
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parents:
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598 request to this resource.
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599 """
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600 serviceMethod = None
191
48245777acea Return proper HTTP status codes on failed un-/subscription.
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601 errorMap = {
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diff changeset
602 error.NodeNotFound:
273
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603 (http.FORBIDDEN, "Node not found"),
191
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diff changeset
604 error.NotSubscribed:
273
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diff changeset
605 (http.FORBIDDEN, "No such subscription found"),
206
274a45d2a5ab Implement root collection that includes all leaf nodes.
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606 error.SubscriptionExists:
273
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607 (http.FORBIDDEN, "Subscription already exists"),
191
48245777acea Return proper HTTP status codes on failed un-/subscription.
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608 }
177
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parents:
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609
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parents:
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610 def __init__(self, service):
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parents:
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611 self.service = service
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612 self.params = None
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613
185
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614
273
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615 render_GET = None
177
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616
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diff changeset
617
273
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618 @_asyncResponse
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diff changeset
619 def render_POST(self, request):
177
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620 def trapNotFound(failure):
191
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diff changeset
621 err = failure.trap(*self.errorMap.keys())
273
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622 status, message = self.errorMap[err]
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623 raise Error(status, message)
177
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624
273
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625 def toResponse(result):
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diff changeset
626 request.setResponseCode(http.NO_CONTENT)
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627 return b''
177
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parents:
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628
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parents:
diff changeset
629 def trapXMPPURIParseError(failure):
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630 failure.trap(XMPPURIParseError)
273
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631 raise Error(http.BAD_REQUEST,
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diff changeset
632 "Malformed XMPP URI: %s" % failure.value)
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diff changeset
633
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634 data = request.content.read()
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635 self.params = simplejson.loads(data)
177
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636
273
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637 uri = self.params['uri']
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diff changeset
638 callback = self.params['callback']
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diff changeset
639
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diff changeset
640 jid, nodeIdentifier = getServiceAndNode(uri)
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diff changeset
641 method = getattr(self.service, self.serviceMethod)
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642 d = method(jid, nodeIdentifier, callback)
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643 d.addCallback(toResponse)
177
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644 d.addErrback(trapNotFound)
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parents:
diff changeset
645 d.addErrback(trapXMPPURIParseError)
faf1c9bc2612 Add HTTP gateway in a separate plugin.
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parents:
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646 return d
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parents:
diff changeset
647
faf1c9bc2612 Add HTTP gateway in a separate plugin.
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parents:
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648
185
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649
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650 class RemoteSubscribeResource(RemoteSubscribeBaseResource):
177
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651 """
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parents:
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652 Resource to subscribe to a remote publish-subscribe node.
faf1c9bc2612 Add HTTP gateway in a separate plugin.
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parents:
diff changeset
653
faf1c9bc2612 Add HTTP gateway in a separate plugin.
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parents:
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654 The passed C{uri} is the XMPP URI of the node to subscribe to and the
faf1c9bc2612 Add HTTP gateway in a separate plugin.
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parents:
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655 C{callback} is the callback URI. Upon receiving notifications from the
faf1c9bc2612 Add HTTP gateway in a separate plugin.
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parents:
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656 node, a POST request will be perfomed on the callback URI.
faf1c9bc2612 Add HTTP gateway in a separate plugin.
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parents:
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657 """
faf1c9bc2612 Add HTTP gateway in a separate plugin.
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parents:
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658 serviceMethod = 'subscribeCallback'
faf1c9bc2612 Add HTTP gateway in a separate plugin.
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parents:
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659
faf1c9bc2612 Add HTTP gateway in a separate plugin.
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parents:
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660
185
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661
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662 class RemoteUnsubscribeResource(RemoteSubscribeBaseResource):
177
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663 """
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parents:
diff changeset
664 Resource to unsubscribe from a remote publish-subscribe node.
faf1c9bc2612 Add HTTP gateway in a separate plugin.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
665
faf1c9bc2612 Add HTTP gateway in a separate plugin.
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diff changeset
666 The passed C{uri} is the XMPP URI of the node to unsubscribe from and the
faf1c9bc2612 Add HTTP gateway in a separate plugin.
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parents:
diff changeset
667 C{callback} is the callback URI that was registered for it.
faf1c9bc2612 Add HTTP gateway in a separate plugin.
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parents:
diff changeset
668 """
faf1c9bc2612 Add HTTP gateway in a separate plugin.
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
669 serviceMethod = 'unsubscribeCallback'
faf1c9bc2612 Add HTTP gateway in a separate plugin.
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parents:
diff changeset
670
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parents:
diff changeset
671
185
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diff changeset
672
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673 class RemoteItemsResource(resource.Resource):
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parents: 183
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674 """
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
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675 Resource for retrieving items from a remote pubsub node.
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
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parents: 183
diff changeset
676 """
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diff changeset
677
177
faf1c9bc2612 Add HTTP gateway in a separate plugin.
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678 def __init__(self, service):
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parents:
diff changeset
679 self.service = service
faf1c9bc2612 Add HTTP gateway in a separate plugin.
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parents:
diff changeset
680
198
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diff changeset
681
273
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682 @_asyncResponse
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diff changeset
683 def render_GET(self, request):
185
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diff changeset
684 try:
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
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parents: 183
diff changeset
685 maxItems = int(request.args.get('max_items', [0])[0]) or None
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
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diff changeset
686 except ValueError:
273
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687 raise Error(http.BAD_REQUEST,
6ba0d6def7f5 Use twisted.web instead of web2, initial tests.
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parents: 255
diff changeset
688 "The argument max_items has an invalid value.")
185
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diff changeset
689
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
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diff changeset
690 try:
198
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diff changeset
691 uri = request.args['uri'][0]
185
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parents: 183
diff changeset
692 except KeyError:
273
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diff changeset
693 raise Error(http.BAD_REQUEST,
6ba0d6def7f5 Use twisted.web instead of web2, initial tests.
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parents: 255
diff changeset
694 "No URI for the remote node provided.")
198
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parents: 191
diff changeset
695
e404775b12df Change naming and spacing conventions to match Twisted's.
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parents: 191
diff changeset
696 try:
e404775b12df Change naming and spacing conventions to match Twisted's.
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diff changeset
697 jid, nodeIdentifier = getServiceAndNode(uri)
185
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parents: 183
diff changeset
698 except XMPPURIParseError:
273
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diff changeset
699 raise Error(http.BAD_REQUEST,
6ba0d6def7f5 Use twisted.web instead of web2, initial tests.
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diff changeset
700 "Malformed XMPP URI: %s" % uri)
177
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701
273
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diff changeset
702 def toResponse(items):
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diff changeset
703 """
6ba0d6def7f5 Use twisted.web instead of web2, initial tests.
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parents: 255
diff changeset
704 Create a feed out the retrieved items.
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diff changeset
705 """
185
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diff changeset
706 atomEntries = extractAtomEntries(items)
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parents: 183
diff changeset
707 feed = constructFeed(jid, nodeIdentifier, atomEntries,
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diff changeset
708 "Retrieved item collection")
273
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diff changeset
709 body = feed.toXml().encode('utf-8')
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parents: 255
diff changeset
710 request.setHeader(b'Content-Type', MIME_ATOM_FEED)
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parents: 255
diff changeset
711 return body
185
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diff changeset
712
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diff changeset
713 def trapNotFound(failure):
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diff changeset
714 failure.trap(StanzaError)
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parents: 183
diff changeset
715 if not failure.value.condition == 'item-not-found':
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diff changeset
716 raise failure
273
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diff changeset
717 raise Error(http.NOT_FOUND, "Node not found")
185
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diff changeset
718
186
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diff changeset
719 d = self.service.items(jid, nodeIdentifier, maxItems)
273
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parents: 255
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720 d.addCallback(toResponse)
185
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diff changeset
721 d.addErrback(trapNotFound)
177
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722 return d
183
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
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diff changeset
723
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diff changeset
724
185
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diff changeset
725
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parents: 183
diff changeset
726 # Client side code to interact with a service as provided above
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parents: 183
diff changeset
727
183
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
728 def getPageWithFactory(url, contextFactory=None, *args, **kwargs):
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
729 """Download a web page.
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
730
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
731 Download a page. Return the factory that holds a deferred, which will
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
732 callback with a page (as a string) or errback with a description of the
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
733 error.
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
734
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
735 See HTTPClientFactory to see what extra args can be passed.
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
736 """
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
737
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
738 factory = client.HTTPClientFactory(url, *args, **kwargs)
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
739 factory.protocol.handleStatus_204 = lambda self: self.handleStatus_200()
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
740
275
9c74cd2635f6 Fix getPageWithFactory
Christopher Zorn <tofu@thetofu.com>
parents: 274
diff changeset
741 if factory.scheme == 'https':
183
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
742 from twisted.internet import ssl
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
743 if contextFactory is None:
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
744 contextFactory = ssl.ClientContextFactory()
275
9c74cd2635f6 Fix getPageWithFactory
Christopher Zorn <tofu@thetofu.com>
parents: 274
diff changeset
745 reactor.connectSSL(factory.host, factory.port, factory, contextFactory)
183
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
746 else:
275
9c74cd2635f6 Fix getPageWithFactory
Christopher Zorn <tofu@thetofu.com>
parents: 274
diff changeset
747 reactor.connectTCP(factory.host, factory.port, factory)
183
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
748 return factory
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
749
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
750
185
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
751
183
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
752 class CallbackResource(resource.Resource):
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
753 """
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
754 Web resource for retrieving gateway notifications.
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
755 """
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
756
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
757 def __init__(self, callback):
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
758 self.callback = callback
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
759
185
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
760
183
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
761 http_GET = None
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
762
185
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
763
273
6ba0d6def7f5 Use twisted.web instead of web2, initial tests.
Ralph Meijer <ralphm@ik.nu>
parents: 255
diff changeset
764 def render_POST(self, request):
6ba0d6def7f5 Use twisted.web instead of web2, initial tests.
Ralph Meijer <ralphm@ik.nu>
parents: 255
diff changeset
765 if request.requestHeaders.hasHeader(b'Event'):
6ba0d6def7f5 Use twisted.web instead of web2, initial tests.
Ralph Meijer <ralphm@ik.nu>
parents: 255
diff changeset
766 payload = None
209
7f3ffb7a1a9e Add support for node deletion with redirect.
Ralph Meijer <ralphm@ik.nu>
parents: 206
diff changeset
767 else:
273
6ba0d6def7f5 Use twisted.web instead of web2, initial tests.
Ralph Meijer <ralphm@ik.nu>
parents: 255
diff changeset
768 payload = parseXml(request.content.read())
6ba0d6def7f5 Use twisted.web instead of web2, initial tests.
Ralph Meijer <ralphm@ik.nu>
parents: 255
diff changeset
769
6ba0d6def7f5 Use twisted.web instead of web2, initial tests.
Ralph Meijer <ralphm@ik.nu>
parents: 255
diff changeset
770 self.callback(payload, request.requestHeaders)
6ba0d6def7f5 Use twisted.web instead of web2, initial tests.
Ralph Meijer <ralphm@ik.nu>
parents: 255
diff changeset
771
6ba0d6def7f5 Use twisted.web instead of web2, initial tests.
Ralph Meijer <ralphm@ik.nu>
parents: 255
diff changeset
772 request.setResponseCode(http.NO_CONTENT)
6ba0d6def7f5 Use twisted.web instead of web2, initial tests.
Ralph Meijer <ralphm@ik.nu>
parents: 255
diff changeset
773 return b''
6ba0d6def7f5 Use twisted.web instead of web2, initial tests.
Ralph Meijer <ralphm@ik.nu>
parents: 255
diff changeset
774
183
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
775
185
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
776
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
777
183
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
778 class GatewayClient(service.Service):
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
779 """
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
780 Service that provides client access to the HTTP Gateway into Idavoll.
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
781 """
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
782
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
783 agent = "Idavoll HTTP Gateway Client"
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
784
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
785 def __init__(self, baseURI, callbackHost=None, callbackPort=None):
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
786 self.baseURI = baseURI
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
787 self.callbackHost = callbackHost or 'localhost'
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
788 self.callbackPort = callbackPort or 8087
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
789 root = resource.Resource()
273
6ba0d6def7f5 Use twisted.web instead of web2, initial tests.
Ralph Meijer <ralphm@ik.nu>
parents: 255
diff changeset
790 root.putChild('callback', CallbackResource(
6ba0d6def7f5 Use twisted.web instead of web2, initial tests.
Ralph Meijer <ralphm@ik.nu>
parents: 255
diff changeset
791 lambda *args, **kwargs: self.callback(*args, **kwargs)))
183
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
792 self.site = server.Site(root)
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
793
185
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
794
183
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
795 def startService(self):
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
796 self.port = reactor.listenTCP(self.callbackPort,
273
6ba0d6def7f5 Use twisted.web instead of web2, initial tests.
Ralph Meijer <ralphm@ik.nu>
parents: 255
diff changeset
797 self.site)
183
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
798
185
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
799
183
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
800 def stopService(self):
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
801 return self.port.stopListening()
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
802
185
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
803
183
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
804 def _makeURI(self, verb, query=None):
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
805 uriComponents = urlparse.urlparse(self.baseURI)
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
806 uri = urlparse.urlunparse((uriComponents[0],
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
807 uriComponents[1],
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
808 uriComponents[2] + verb,
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
809 '',
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
810 query and urllib.urlencode(query) or '',
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
811 ''))
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
812 return uri
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
813
185
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
814
183
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
815 def callback(self, data, headers):
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
816 pass
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
817
185
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
818
206
274a45d2a5ab Implement root collection that includes all leaf nodes.
Ralph Meijer <ralphm@ik.nu>
parents: 204
diff changeset
819 def ping(self):
274a45d2a5ab Implement root collection that includes all leaf nodes.
Ralph Meijer <ralphm@ik.nu>
parents: 204
diff changeset
820 f = getPageWithFactory(self._makeURI(''),
274a45d2a5ab Implement root collection that includes all leaf nodes.
Ralph Meijer <ralphm@ik.nu>
parents: 204
diff changeset
821 method='HEAD',
274a45d2a5ab Implement root collection that includes all leaf nodes.
Ralph Meijer <ralphm@ik.nu>
parents: 204
diff changeset
822 agent=self.agent)
274a45d2a5ab Implement root collection that includes all leaf nodes.
Ralph Meijer <ralphm@ik.nu>
parents: 204
diff changeset
823 return f.deferred
274a45d2a5ab Implement root collection that includes all leaf nodes.
Ralph Meijer <ralphm@ik.nu>
parents: 204
diff changeset
824
274a45d2a5ab Implement root collection that includes all leaf nodes.
Ralph Meijer <ralphm@ik.nu>
parents: 204
diff changeset
825
183
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
826 def create(self):
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
827 f = getPageWithFactory(self._makeURI('create'),
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
828 method='POST',
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
829 agent=self.agent)
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
830 return f.deferred.addCallback(simplejson.loads)
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
831
185
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
832
209
7f3ffb7a1a9e Add support for node deletion with redirect.
Ralph Meijer <ralphm@ik.nu>
parents: 206
diff changeset
833 def delete(self, xmppURI, redirectURI=None):
7f3ffb7a1a9e Add support for node deletion with redirect.
Ralph Meijer <ralphm@ik.nu>
parents: 206
diff changeset
834 query = {'uri': xmppURI}
7f3ffb7a1a9e Add support for node deletion with redirect.
Ralph Meijer <ralphm@ik.nu>
parents: 206
diff changeset
835
7f3ffb7a1a9e Add support for node deletion with redirect.
Ralph Meijer <ralphm@ik.nu>
parents: 206
diff changeset
836 if redirectURI:
7f3ffb7a1a9e Add support for node deletion with redirect.
Ralph Meijer <ralphm@ik.nu>
parents: 206
diff changeset
837 params = {'redirect_uri': redirectURI}
7f3ffb7a1a9e Add support for node deletion with redirect.
Ralph Meijer <ralphm@ik.nu>
parents: 206
diff changeset
838 postdata = simplejson.dumps(params)
7f3ffb7a1a9e Add support for node deletion with redirect.
Ralph Meijer <ralphm@ik.nu>
parents: 206
diff changeset
839 headers = {'Content-Type': MIME_JSON}
7f3ffb7a1a9e Add support for node deletion with redirect.
Ralph Meijer <ralphm@ik.nu>
parents: 206
diff changeset
840 else:
7f3ffb7a1a9e Add support for node deletion with redirect.
Ralph Meijer <ralphm@ik.nu>
parents: 206
diff changeset
841 postdata = None
7f3ffb7a1a9e Add support for node deletion with redirect.
Ralph Meijer <ralphm@ik.nu>
parents: 206
diff changeset
842 headers = None
7f3ffb7a1a9e Add support for node deletion with redirect.
Ralph Meijer <ralphm@ik.nu>
parents: 206
diff changeset
843
7f3ffb7a1a9e Add support for node deletion with redirect.
Ralph Meijer <ralphm@ik.nu>
parents: 206
diff changeset
844 f = getPageWithFactory(self._makeURI('delete', query),
7f3ffb7a1a9e Add support for node deletion with redirect.
Ralph Meijer <ralphm@ik.nu>
parents: 206
diff changeset
845 method='POST',
7f3ffb7a1a9e Add support for node deletion with redirect.
Ralph Meijer <ralphm@ik.nu>
parents: 206
diff changeset
846 postdata=postdata,
7f3ffb7a1a9e Add support for node deletion with redirect.
Ralph Meijer <ralphm@ik.nu>
parents: 206
diff changeset
847 headers=headers,
7f3ffb7a1a9e Add support for node deletion with redirect.
Ralph Meijer <ralphm@ik.nu>
parents: 206
diff changeset
848 agent=self.agent)
7f3ffb7a1a9e Add support for node deletion with redirect.
Ralph Meijer <ralphm@ik.nu>
parents: 206
diff changeset
849 return f.deferred
7f3ffb7a1a9e Add support for node deletion with redirect.
Ralph Meijer <ralphm@ik.nu>
parents: 206
diff changeset
850
7f3ffb7a1a9e Add support for node deletion with redirect.
Ralph Meijer <ralphm@ik.nu>
parents: 206
diff changeset
851
183
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
852 def publish(self, entry, xmppURI=None):
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
853 query = xmppURI and {'uri': xmppURI}
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
854
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
855 f = getPageWithFactory(self._makeURI('publish', query),
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
856 method='POST',
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
857 postdata=entry.toXml().encode('utf-8'),
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
858 headers={'Content-Type': MIME_ATOM_ENTRY},
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
859 agent=self.agent)
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
860 return f.deferred.addCallback(simplejson.loads)
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
861
185
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
Ralph Meijer <ralphm@ik.nu>
parents: 183
diff changeset
862
183
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
863 def listNodes(self):
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
864 f = getPageWithFactory(self._makeURI('list'),
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
865 method='GET',
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
866 agent=self.agent)
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
867 return f.deferred.addCallback(simplejson.loads)
c21b986cff30 Implement HTTP client to gateway and implement functional tests with it.
Ralph Meijer <ralphm@ik.nu>
parents: 177
diff changeset
868
185
9038908dc2f5 Add gateway support for retrieving items from a node. Reorder gateway module.
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869
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870 def subscribe(self, xmppURI):
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871 params = {'uri': xmppURI,
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872 'callback': 'http://%s:%s/callback' % (self.callbackHost,
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873 self.callbackPort)}
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874 f = getPageWithFactory(self._makeURI('subscribe'),
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875 method='POST',
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876 postdata=simplejson.dumps(params),
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877 headers={'Content-Type': MIME_JSON},
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878 agent=self.agent)
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879 return f.deferred
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880
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881
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882 def unsubscribe(self, xmppURI):
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883 params = {'uri': xmppURI,
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884 'callback': 'http://%s:%s/callback' % (self.callbackHost,
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885 self.callbackPort)}
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886 f = getPageWithFactory(self._makeURI('unsubscribe'),
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887 method='POST',
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888 postdata=simplejson.dumps(params),
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889 headers={'Content-Type': MIME_JSON},
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890 agent=self.agent)
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891 return f.deferred
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892
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893
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894 def items(self, xmppURI, maxItems=None):
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895 query = {'uri': xmppURI}
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896 if maxItems is not None:
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897 query['max_items'] = int(maxItems)
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898 f = getPageWithFactory(self._makeURI('items', query),
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899 method='GET',
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900 agent=self.agent)
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901 return f.deferred