Mercurial > sat_tmp

annotate wokkel/rsm.py @ 6:dc3a3f454f39

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tmp (wokkel): licenses fixes: the licenses headers were wrong, it was fixed: original work from Adrien Cossa is directly under AGPL v3 (with his agreement), work derivated from Wokkel is sublicensed to AGPL v3 as allowed by the original license, to stay consistent with the rest of the code base. Theses files (and only these ones) can be relicensed again to fill Wokkel license if Ralph plan to merge them upstream...
author Goffi <goffi@goffi.org>
date Thu, 23 Apr 2015 10:57:40 +0200
parents 4c3e159abf0b
children 1e21b4e94566
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1 # -*- test-case-name: wokkel.test.test_rsm -*-
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2 #
6
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3 # SàT Wokkel extension for Result Set Management (XEP-0059)
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4 # Copyright (C) 2015 Adien Cossa (souliane@mailoo.org)
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5
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6 # This program is free software: you can redistribute it and/or modify
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7 # it under the terms of the GNU Affero General Public License as published by
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8 # the Free Software Foundation, either version 3 of the License, or
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9 # (at your option) any later version.
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10
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11 # This program is distributed in the hope that it will be useful,
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12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 # GNU Affero General Public License for more details.
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15
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16 # You should have received a copy of the GNU Affero General Public License
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17 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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18
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19 """
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20 XMPP Result Set Management protocol.
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21
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22 This protocol is specified in
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23 U{XEP-0059<http://xmpp.org/extensions/xep-0059.html>}.
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24 """
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25
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26 from twisted.words.xish import domish
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27
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28 import pubsub
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29 import copy
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30
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31
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32 # RSM namespace
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33 NS_RSM = 'http://jabber.org/protocol/rsm'
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34
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35
1
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36 class RSMError(Exception):
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37 """
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38 RSM error.
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39 """
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40
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41
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42 class RSMNotFoundError(Exception):
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43 """
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44 An expected RSM element has not been found.
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45 """
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46
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47
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48 class RSMRequest():
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49 """
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50 A Result Set Management request.
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51
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52 @ivar max_: limit on the number of retrieved items.
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53 @itype max_: C{int} or C{unicode}
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54
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55 @ivar index: starting index of the requested page.
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56 @itype index: C{int} or C{unicode}
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57
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58 @ivar after: ID of the element immediately preceding the page.
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59 @itype after: C{unicode}
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60
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61 @ivar before: ID of the element immediately following the page.
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62 @itype before: C{unicode}
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63 """
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64
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65 max_ = 10
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66 index = None
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67 after = None
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68 before = None
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69
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70 def __init__(self, max_=None, index=None, after=None, before=None):
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71 if max_ is not None:
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72 max_ = int(max_)
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73 assert max_ >= 0
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74 self.max_ = max_
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75
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76 if index is not None:
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77 assert after is None and before is None
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78 index = int(index)
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79 assert index >= 0
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80 self.index = index
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81
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82 if after is not None:
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83 assert before is None
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84 assert isinstance(after, unicode)
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85 self.after = after
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86
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87 if before is not None:
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88 assert isinstance(before, unicode)
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89 self.before = before
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90
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91 @classmethod
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92 def parse(cls, element):
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93 """Parse the given request element.
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94
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95 @param element: request containing a set element.
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96 @type element: L{domish.Element}
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97
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98 @return: RSMRequest instance.
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99 @rtype: L{RSMRequest}
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100 """
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101 try:
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102 set_elt = domish.generateElementsQNamed(element.elements(),
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103 name="set",
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104 uri=NS_RSM).next()
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105 except StopIteration:
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106 raise RSMNotFoundError()
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107
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108 request = RSMRequest()
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109 for elt in list(set_elt.elements()):
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110 if elt.name in ('before', 'after'):
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111 setattr(request, elt.name, ''.join(elt.children))
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112 elif elt.name in ('max', 'index'):
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113 setattr(request, elt.name, int(''.join(elt.children)))
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114
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115 if request.max_ is None:
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116 raise RSMError("RSM request is missing its 'max_' element")
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117
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118 return request
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119
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120 def toElement(self):
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121 """
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122 Return the DOM representation of this RSM request.
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diff changeset
123
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
124 @rtype: L{domish.Element}
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souliane <souliane@mailoo.org>
parents:
diff changeset
125 """
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
126 set_elt = domish.Element((NS_RSM, 'set'))
5
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diff changeset
127 set_elt.addElement('max').addContent(unicode(self.max_))
0
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souliane <souliane@mailoo.org>
parents:
diff changeset
128
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
129 if self.index is not None:
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
130 set_elt.addElement('index').addContent(unicode(self.index))
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souliane <souliane@mailoo.org>
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diff changeset
131
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
132 if self.before is not None:
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
133 if self.before == '': # request the last page
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
134 set_elt.addElement('before')
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souliane <souliane@mailoo.org>
parents:
diff changeset
135 else:
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
136 set_elt.addElement('before').addContent(self.before)
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souliane <souliane@mailoo.org>
parents:
diff changeset
137
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
138 if self.after is not None:
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
139 set_elt.addElement('after').addContent(self.after)
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souliane <souliane@mailoo.org>
parents:
diff changeset
140
1
9d35f88168a1 tmp: update tmp.wokkel.rsm, add tmp.wokkel.mam
souliane <souliane@mailoo.org>
parents: 0
diff changeset
141 return set_elt
9d35f88168a1 tmp: update tmp.wokkel.rsm, add tmp.wokkel.mam
souliane <souliane@mailoo.org>
parents: 0
diff changeset
142
9d35f88168a1 tmp: update tmp.wokkel.rsm, add tmp.wokkel.mam
souliane <souliane@mailoo.org>
parents: 0
diff changeset
143 def render(self, element):
9d35f88168a1 tmp: update tmp.wokkel.rsm, add tmp.wokkel.mam
souliane <souliane@mailoo.org>
parents: 0
diff changeset
144 """Embed the DOM representation of this RSM request in the given element.
9d35f88168a1 tmp: update tmp.wokkel.rsm, add tmp.wokkel.mam
souliane <souliane@mailoo.org>
parents: 0
diff changeset
145
9d35f88168a1 tmp: update tmp.wokkel.rsm, add tmp.wokkel.mam
souliane <souliane@mailoo.org>
parents: 0
diff changeset
146 @param element: Element to contain the RSM request.
9d35f88168a1 tmp: update tmp.wokkel.rsm, add tmp.wokkel.mam
souliane <souliane@mailoo.org>
parents: 0
diff changeset
147 @type element: L{domish.Element}
9d35f88168a1 tmp: update tmp.wokkel.rsm, add tmp.wokkel.mam
souliane <souliane@mailoo.org>
parents: 0
diff changeset
148
9d35f88168a1 tmp: update tmp.wokkel.rsm, add tmp.wokkel.mam
souliane <souliane@mailoo.org>
parents: 0
diff changeset
149 @return: RSM request element.
9d35f88168a1 tmp: update tmp.wokkel.rsm, add tmp.wokkel.mam
souliane <souliane@mailoo.org>
parents: 0
diff changeset
150 @rtype: L{domish.Element}
9d35f88168a1 tmp: update tmp.wokkel.rsm, add tmp.wokkel.mam
souliane <souliane@mailoo.org>
parents: 0
diff changeset
151 """
9d35f88168a1 tmp: update tmp.wokkel.rsm, add tmp.wokkel.mam
souliane <souliane@mailoo.org>
parents: 0
diff changeset
152 if element.name == 'pubsub' and hasattr(element, 'items'):
5
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Goffi <goffi@goffi.org>
parents: 1
diff changeset
153 element.items.attributes['max_items'] = unicode(self.max_)
1
9d35f88168a1 tmp: update tmp.wokkel.rsm, add tmp.wokkel.mam
souliane <souliane@mailoo.org>
parents: 0
diff changeset
154
9d35f88168a1 tmp: update tmp.wokkel.rsm, add tmp.wokkel.mam
souliane <souliane@mailoo.org>
parents: 0
diff changeset
155 set_elt = self.toElement()
9d35f88168a1 tmp: update tmp.wokkel.rsm, add tmp.wokkel.mam
souliane <souliane@mailoo.org>
parents: 0
diff changeset
156 element.addChild(set_elt)
0
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
157
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
158 return set_elt
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
159
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
160
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
161 class RSMResponse():
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
162 """
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
163 A Result Set Management response.
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souliane <souliane@mailoo.org>
parents:
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164
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souliane <souliane@mailoo.org>
parents:
diff changeset
165 @ivar count: total number of items.
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souliane <souliane@mailoo.org>
parents:
diff changeset
166 @itype count: C{int}
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
167
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
168 @ivar index: starting index of the returned page.
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souliane <souliane@mailoo.org>
parents:
diff changeset
169 @itype index: C{int}
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
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170
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souliane <souliane@mailoo.org>
parents:
diff changeset
171 @ivar first: ID of the first element of the returned page.
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souliane <souliane@mailoo.org>
parents:
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172 @itype first: C{unicode}
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
173
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souliane <souliane@mailoo.org>
parents:
diff changeset
174 @ivar last: ID of the last element of the returned page.
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
175 @itype last: C{unicode}
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
176 """
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
177
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souliane <souliane@mailoo.org>
parents:
diff changeset
178 count = 0
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souliane <souliane@mailoo.org>
parents:
diff changeset
179 index = None
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
180 first = None
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
181 last = None
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
182
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
183 def __init__(self, count=None, index=None, first=None, last=None):
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
184 if count is not None:
5
4c3e159abf0b plugins (groupblog, xep-0277) + tmp(rsm): improved style:
Goffi <goffi@goffi.org>
parents: 1
diff changeset
185 assert isinstance(count, int) and count >= 0
0
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
186 self.count = count
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
187
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
188 if index is not None:
5
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Goffi <goffi@goffi.org>
parents: 1
diff changeset
189 assert isinstance(index, int) and index >= 0
0
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
190 self.index = index
5
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Goffi <goffi@goffi.org>
parents: 1
diff changeset
191 assert isinstance(first, unicode)
0
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
192 self.first = first
5
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parents: 1
diff changeset
193 assert isinstance(last, unicode)
0
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
194 self.last = last
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souliane <souliane@mailoo.org>
parents:
diff changeset
195 else:
5
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Goffi <goffi@goffi.org>
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diff changeset
196 assert first is None and last is None
0
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
197
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
198 @classmethod
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souliane <souliane@mailoo.org>
parents:
diff changeset
199 def parse(cls, element):
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souliane <souliane@mailoo.org>
parents:
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200 """Parse the given response element.
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
201
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
202 @param element: response element.
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
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203 @type element: L{domish.Element}
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
204
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
205 @return: RSMResponse instance.
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
206 @rtype: L{RSMResponse}
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
207 """
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
208 try:
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
209 set_elt = domish.generateElementsQNamed(element.elements(),
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
210 name="set",
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
211 uri=NS_RSM).next()
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
212 except StopIteration:
1
9d35f88168a1 tmp: update tmp.wokkel.rsm, add tmp.wokkel.mam
souliane <souliane@mailoo.org>
parents: 0
diff changeset
213 return RSMNotFoundError()
0
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
214
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
215 response = RSMResponse()
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
216 for elt in list(set_elt.elements()):
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
217 if elt.name in ('first', 'last'):
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
218 setattr(response, elt.name, ''.join(elt.children))
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
219 if elt.name == 'first':
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
220 response.index = int(elt.getAttribute("index"))
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
221 elif elt.name == 'count':
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
222 response.count = int(''.join(elt.children))
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
223
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
224 if response.count is None:
1
9d35f88168a1 tmp: update tmp.wokkel.rsm, add tmp.wokkel.mam
souliane <souliane@mailoo.org>
parents: 0
diff changeset
225 raise RSMError("RSM response is missing its 'count' element")
0
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
226
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
227 return response
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
228
1
9d35f88168a1 tmp: update tmp.wokkel.rsm, add tmp.wokkel.mam
souliane <souliane@mailoo.org>
parents: 0
diff changeset
229 def toElement(self):
9d35f88168a1 tmp: update tmp.wokkel.rsm, add tmp.wokkel.mam
souliane <souliane@mailoo.org>
parents: 0
diff changeset
230 """
9d35f88168a1 tmp: update tmp.wokkel.rsm, add tmp.wokkel.mam
souliane <souliane@mailoo.org>
parents: 0
diff changeset
231 Return the DOM representation of this RSM request.
0
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
232
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
233 @rtype: L{domish.Element}
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
234 """
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
235 set_elt = domish.Element((NS_RSM, 'set'))
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
236 set_elt.addElement('count').addContent(unicode(self.count))
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
237
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
238 if self.index is not None:
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
239 first_elt = set_elt.addElement('first')
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
240 first_elt.addContent(self.first)
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
241 first_elt['index'] = unicode(self.index)
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
242
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
243 set_elt.addElement('last').addContent(self.last)
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
diff changeset
244
1
9d35f88168a1 tmp: update tmp.wokkel.rsm, add tmp.wokkel.mam
souliane <souliane@mailoo.org>
parents: 0
diff changeset
245 return set_elt
9d35f88168a1 tmp: update tmp.wokkel.rsm, add tmp.wokkel.mam
souliane <souliane@mailoo.org>
parents: 0
diff changeset
246
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diff changeset
247 def render(self, element):
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248 """Embed the DOM representation of this RSM response in the given element.
0
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249
1
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diff changeset
250 @param element: Element to contain the RSM response.
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251 @type element: L{domish.Element}
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252
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parents: 0
diff changeset
253 @return: RSM request element.
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254 @rtype: L{domish.Element}
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parents: 0
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255 """
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parents: 0
diff changeset
256 set_elt = self.toElement()
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parents: 0
diff changeset
257 element.addChild(set_elt)
0
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diff changeset
258 return set_elt
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259
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souliane <souliane@mailoo.org>
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diff changeset
260 def toDict(self):
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261 """Return a dict representation of the object.
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262
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263 @return: a dict of strings.
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264 @rtype: C{dict} binding C{unicode} to C{unicode}
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265 """
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266 result = {}
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souliane <souliane@mailoo.org>
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267 for attr in ('count', 'index', 'first', 'last'):
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268 value = getattr(self, attr)
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diff changeset
269 if value is not None:
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270 result[attr] = unicode(value)
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271 return result
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272
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273
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274 class PubSubRequest(pubsub.PubSubRequest):
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275 """PubSubRequest extension to handle RSM.
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276
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277 @ivar rsm: RSM request instance.
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278 @type rsm: L{RSMRequest}
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279 """
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280
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281 rsm = None
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282
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283 def __init__(self, verb=None):
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284 pubsub.PubSubRequest.__init__(self, verb)
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285 self._parameters = copy.deepcopy(pubsub.PubSubRequest._parameters)
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286 self._parameters['items'].append('rsm')
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287
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288 def _parse_rsm(self, verbElement):
1
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diff changeset
289 try:
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290 self.rsm = RSMRequest.parse(verbElement.parent)
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291 except RSMNotFoundError:
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292 self.rsm = None
0
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293
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294 def _render_rsm(self, verbElement):
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295 if self.rsm:
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diff changeset
296 self.rsm.render(verbElement.parent)
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297
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298
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diff changeset
299 class PubSubClient(pubsub.PubSubClient):
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300 """PubSubClient extension to handle RSM."""
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301
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diff changeset
302 _rsm_responses = {}
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303
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304 def items(self, service, nodeIdentifier, maxItems=None, itemIdentifiers=None,
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305 subscriptionIdentifier=None, sender=None, ext_data=None):
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306 """
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307 Retrieve previously published items from a publish subscribe node.
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308
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309 @param service: The publish subscribe service that keeps the node.
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310 @type service: L{JID<twisted.words.protocols.jabber.jid.JID>}
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311
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312 @param nodeIdentifier: The identifier of the node.
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313 @type nodeIdentifier: C{unicode}
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314
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diff changeset
315 @param maxItems: Optional limit on the number of retrieved items.
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316 @type maxItems: C{int}
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317
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diff changeset
318 @param itemIdentifiers: Identifiers of the items to be retrieved.
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319 @type itemIdentifiers: C{set}
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320
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diff changeset
321 @param subscriptionIdentifier: Optional subscription identifier. In
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diff changeset
322 case the node has been subscribed to multiple times, this narrows
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diff changeset
323 the results to the specific subscription.
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324 @type subscriptionIdentifier: C{unicode}
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325
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diff changeset
326 @param ext_data: extension data.
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327 @type ext_data: L{dict}
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328
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diff changeset
329 @return: a Deferred that fires a C{list} of L{domish.Element}.
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330 @rtype: L{defer.Deferred}
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331 """
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diff changeset
332 request = PubSubRequest('items') # that's a rsm.PubSubRequest instance
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diff changeset
333 request.recipient = service
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diff changeset
334 request.nodeIdentifier = nodeIdentifier
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diff changeset
335 if maxItems:
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souliane <souliane@mailoo.org>
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diff changeset
336 request.maxItems = str(int(maxItems))
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diff changeset
337 request.subscriptionIdentifier = subscriptionIdentifier
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diff changeset
338 request.sender = sender
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diff changeset
339 request.itemIdentifiers = itemIdentifiers
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diff changeset
340 if ext_data and 'rsm' in ext_data:
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diff changeset
341 request.rsm = ext_data['rsm']
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342
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souliane <souliane@mailoo.org>
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diff changeset
343 def cb(iq):
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souliane <souliane@mailoo.org>
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diff changeset
344 items = []
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diff changeset
345 if iq.pubsub.items:
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diff changeset
346 for element in iq.pubsub.items.elements():
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diff changeset
347 if element.uri == pubsub.NS_PUBSUB and element.name == 'item':
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diff changeset
348 items.append(element)
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349
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diff changeset
350 if request.rsm:
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diff changeset
351 response = RSMResponse.parse(iq.pubsub)
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diff changeset
352 if response is not None:
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diff changeset
353 self._rsm_responses[ext_data['id']] = response
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diff changeset
354 return items
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diff changeset
355
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souliane <souliane@mailoo.org>
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diff changeset
356 d = request.send(self.xmlstream)
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diff changeset
357 d.addCallback(cb)
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diff changeset
358 return d
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souliane <souliane@mailoo.org>
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diff changeset
359
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souliane <souliane@mailoo.org>
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diff changeset
360 def getRSMResponse(self, id):
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diff changeset
361 """
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diff changeset
362 Post-retrieve the RSM response data after items retrieval is done.
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souliane <souliane@mailoo.org>
parents:
diff changeset
363
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souliane <souliane@mailoo.org>
parents:
diff changeset
364 @param id: extension data ID
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diff changeset
365 @type id: C{unicode}
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souliane <souliane@mailoo.org>
parents:
diff changeset
366
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souliane <souliane@mailoo.org>
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diff changeset
367 @return: dict representation of the RSM response.
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diff changeset
368 @rtype: C{dict} of C{unicode}
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369 """
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souliane <souliane@mailoo.org>
parents:
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370 # This method exists to not modify the return value of self.items.
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souliane <souliane@mailoo.org>
parents:
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371 if id not in self._rsm_responses:
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souliane <souliane@mailoo.org>
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372 return {}
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souliane <souliane@mailoo.org>
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373 result = self._rsm_responses[id].toDict()
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
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374 del self._rsm_responses[id]
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souliane <souliane@mailoo.org>
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375 return result
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souliane <souliane@mailoo.org>
parents:
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376
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
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377
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
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378 class PubSubService(pubsub.PubSubService):
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souliane <souliane@mailoo.org>
parents:
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379 """PubSubService extension to handle RSM."""
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souliane <souliane@mailoo.org>
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380
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souliane <souliane@mailoo.org>
parents:
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381 _request_class = PubSubRequest
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souliane <souliane@mailoo.org>
parents:
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382
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souliane <souliane@mailoo.org>
parents:
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383 def _toResponse_items(self, result, resource, request):
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
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384 response = pubsub.PubSubService._toResponse_items(self, result,
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
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385 resource, request)
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souliane <souliane@mailoo.org>
parents:
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386 set_elts = [elt for elt in result if elt.name == 'set']
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souliane <souliane@mailoo.org>
parents:
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387 if set_elts:
5
4c3e159abf0b plugins (groupblog, xep-0277) + tmp(rsm): improved style:
Goffi <goffi@goffi.org>
parents: 1
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388 assert len(set_elts) == 1
0
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souliane <souliane@mailoo.org>
parents:
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389 response.addChild(set_elts[0])
09e7c32a6a00 use sat.tmp.wokkel as a buffer module until the changes are integrated to wokkel
souliane <souliane@mailoo.org>
parents:
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390
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souliane <souliane@mailoo.org>
parents:
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391 return response