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annotate sat/plugins/plugin_xep_0059.py @ 2762:5a51c7fc74a5

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core (XMLUI): small optimisation: introspection is done once at module loading instead of on each XMLUI instantiation
author Goffi <goffi@goffi.org>
date Fri, 11 Jan 2019 09:48:17 +0100
parents e3f6de6ce320
children c4190d5340ab
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1934
2daf7b4c6756 use of /usr/bin/env instead of /usr/bin/python in shebang
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1 #!/usr/bin/env python2
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2 # -*- coding: utf-8 -*-
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3
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4 # SAT plugin for Result Set Management (XEP-0059)
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5 # Copyright (C) 2009-2018 Jérôme Poisson (goffi@goffi.org)
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6 # Copyright (C) 2013-2016 Adrien Cossa (souliane@mailoo.org)
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7
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8 # This program is free software: you can redistribute it and/or modify
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9 # it under the terms of the GNU Affero General Public License as published by
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10 # the Free Software Foundation, either version 3 of the License, or
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11 # (at your option) any later version.
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12
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13 # This program is distributed in the hope that it will be useful,
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14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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16 # GNU Affero General Public License for more details.
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17
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18 # You should have received a copy of the GNU Affero General Public License
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19 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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20
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21 from sat.core.i18n import _
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22 from sat.core.constants import Const as C
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23 from sat.core.log import getLogger
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24
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25 log = getLogger(__name__)
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26
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27 from wokkel import disco
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28 from wokkel import iwokkel
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29 from wokkel import rsm
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30
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31 from twisted.words.protocols.jabber import xmlstream
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32 from zope.interface import implements
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33
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34
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35 PLUGIN_INFO = {
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36 C.PI_NAME: u"Result Set Management",
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37 C.PI_IMPORT_NAME: u"XEP-0059",
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38 C.PI_TYPE: u"XEP",
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39 C.PI_PROTOCOLS: [u"XEP-0059"],
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40 C.PI_MAIN: u"XEP_0059",
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41 C.PI_HANDLER: u"yes",
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42 C.PI_DESCRIPTION: _(u"""Implementation of Result Set Management"""),
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43 }
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44
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45 RSM_PREFIX = u"rsm_"
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46
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47
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48 class XEP_0059(object):
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49 # XXX: RSM management is done directly in Wokkel.
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50
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51 def __init__(self, host):
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52 log.info(_(u"Result Set Management plugin initialization"))
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53
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54 def getHandler(self, client):
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55 return XEP_0059_handler()
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56
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57 def parseExtra(self, extra):
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58 """Parse extra dictionnary to retrieve RSM arguments
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59
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60 @param extra(dict): data for parse
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61 @return (rsm.RSMRequest, None): request with parsed arguments
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62 or None if no RSM arguments have been found
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63 """
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64 rsm_args = {}
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65 for arg in (u"max", u"after", u"before", u"index"):
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66 try:
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67 argname = "max_" if arg == u"max" else arg
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68 rsm_args[argname] = extra.pop(RSM_PREFIX + arg)
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69 except KeyError:
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70 continue
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71
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72 if rsm_args:
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73 return rsm.RSMRequest(**rsm_args)
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74 else:
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75 return None
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76
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77 def serialise(self, rsm_response, data=None):
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78 """Serialise data for RSM
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79
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80 Key set in data can be:
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81 - rsm_first: first item id in the page
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82 - rsm_last: last item id in the page
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83 - rsm_index: position of the first item in the full set (may be approximate)
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84 - rsm_count: total number of items in the full set (may be approximage)
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85 If a value doesn't exists, it's not set.
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86 All values are set as strings.
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87 @param rsm_response(rsm.RSMResponse): response to serialise
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88 @param data(dict, None): dict to update with rsm_* data.
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89 If None, a new dict is created
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90 @return (dict): data dict
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91 """
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92 if data is None:
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93 data = {}
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94 if rsm_response.first is not None:
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95 data[u"rsm_first"] = rsm_response.first
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96 if rsm_response.last is not None:
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97 data[u"rsm_last"] = rsm_response.last
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98 if rsm_response.index is not None:
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99 data[u"rsm_index"] = unicode(rsm_response.index)
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100 if rsm_response.index is not None:
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101 data[u"rsm_index"] = unicode(rsm_response.index)
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102 return data
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103
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104
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105 class XEP_0059_handler(xmlstream.XMPPHandler):
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106 implements(iwokkel.IDisco)
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107
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108 def getDiscoInfo(self, requestor, target, nodeIdentifier=""):
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109 return [disco.DiscoFeature(rsm.NS_RSM)]
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110
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111 def getDiscoItems(self, requestor, target, nodeIdentifier=""):
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112 return []