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annotate src/plugins/plugin_xep_0060.py @ 1267:ea692d51a0ee

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plugins XEP-0059, XEP-0060: leave internal wokkel extensions to sat.tmp.wokkel
author souliane <souliane@mailoo.org>
date Mon, 15 Dec 2014 14:03:13 +0100
parents 93bce9e4c9c8
children bb30bf3ae932
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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 # SAT plugin for Publish-Subscribe (xep-0060)
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5 # Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014 Jérôme Poisson (goffi@goffi.org)
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6
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7 # This program is free software: you can redistribute it and/or modify
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8 # it under the terms of the GNU Affero General Public License as published by
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9 # the Free Software Foundation, either version 3 of the License, or
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10 # (at your option) any later version.
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12 # This program is distributed in the hope that it will be useful,
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 # GNU Affero General Public License for more details.
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17 # You should have received a copy of the GNU Affero General Public License
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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19
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20 from sat.core.i18n import _
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21 from sat.core.constants import Const as C
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22 from sat.core.log import getLogger
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23 log = getLogger(__name__)
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24 from sat.memory.memory import Sessions
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26 from wokkel import disco, pubsub, rsm
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27 from zope.interface import implements
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28 from twisted.internet import defer
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31 PLUGIN_INFO = {
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32 "name": "Publish-Subscribe",
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33 "import_name": "XEP-0060",
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34 "type": "XEP",
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35 "protocols": ["XEP-0060"],
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36 "dependencies": [],
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37 "recommendations": ["XEP-0059"],
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38 "main": "XEP_0060",
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39 "handler": "yes",
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40 "description": _("""Implementation of PubSub Protocol""")
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41 }
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42
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43
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44 class XEP_0060(object):
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45 OPT_ACCESS_MODEL = 'pubsub#access_model'
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46 OPT_PERSIST_ITEMS = 'pubsub#persist_items'
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47 OPT_MAX_ITEMS = 'pubsub#max_items'
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48 OPT_DELIVER_PAYLOADS = 'pubsub#deliver_payloads'
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49 OPT_SEND_ITEM_SUBSCRIBE = 'pubsub#send_item_subscribe'
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50 OPT_NODE_TYPE = 'pubsub#node_type'
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51 OPT_SUBSCRIPTION_TYPE = 'pubsub#subscription_type'
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52 OPT_SUBSCRIPTION_DEPTH = 'pubsub#subscription_depth'
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53 OPT_ROSTER_GROUPS_ALLOWED = 'pubsub#roster_groups_allowed'
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54 OPT_PUBLISH_MODEL = 'pubsub#publish_model'
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55
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56 def __init__(self, host):
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57 log.info(_("PubSub plugin initialization"))
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58 self.host = host
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59 self.managedNodes = []
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60 self.clients = {}
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61 self.node_cache = Sessions(timeout=60, resettable_timeout=False)
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63 def getHandler(self, profile):
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64 self.clients[profile] = SatPubSubClient(self.host, self)
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65 return self.clients[profile]
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66
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67 def addManagedNode(self, node_name, callback):
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68 """Add a handler for a namespace
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69 @param namespace: NS of the handler (will appear in disco info)
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70 @param callback: method to call when the handler is found
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71 @param profile: profile which manage this handler"""
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72 self.managedNodes.append((node_name, callback))
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73
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74 def __getClientNProfile(self, profile_key, action='do pusbsub'):
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75 """Return a tuple of (client, profile)
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76 raise error when the profile doesn't exists
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77 @param profile_key: as usual :)
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78 @param action: text of action to show in case of error"""
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79 profile = self.host.memory.getProfileName(profile_key)
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80 if not profile:
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81 err_mess = _('Trying to %(action)s with an unknown profile key [%(profile_key)s]') % {
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82 'action': action,
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83 'profile_key': profile_key}
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84 log.error(err_mess)
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85 raise Exception(err_mess)
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86 try:
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87 client = self.clients[profile]
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88 except KeyError:
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89 err_mess = _('INTERNAL ERROR: no handler for required profile')
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90 log.error(err_mess)
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91 raise Exception(err_mess)
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92 return profile, client
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93
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94 def _getDeferredNodeCache(self, session_id, init, profile):
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95 """Manage a node cache with deferred initialisation and concurrent access.
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96
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97 @param session_id (string): node cache session ID
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98 @param init (Deferred): deferred list of strings to initialise the cache.
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99 @param profile (str): %(doc_profile)s
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100 @return: Deferred list[str]
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101 """
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102 if session_id in self.node_cache:
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103 cache = self.node_cache.profileGet(session_id, profile)
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104 if cache['nodes'] is None:
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105 # init is still running
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106 d = defer.Deferred()
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107 cache['waiting'].append(d)
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108 return d
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109 return defer.succeed(cache['nodes'])
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110
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111 cache = {'init': init, 'waiting': [], 'nodes': None}
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112 self.node_cache.newSession(cache, session_id=session_id, profile=profile)
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113
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114 def cb(nodes):
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115 cache['nodes'] = nodes
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116 for d in cache['waiting']:
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117 d.callback(nodes)
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118 return nodes
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119
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120 return init.addCallback(cb)
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121
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122 def listNodes(self, service, nodeIdentifier='', profile=C.PROF_KEY_NONE):
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123 """Retrieve the name of the nodes that are accessible on the target service.
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125 @param service (JID): target service
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126 @param nodeIdentifier (str): the parent node name (leave empty to retrieve first-level nodes)
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127 @param profile (str): %(doc_profile)s
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parents: 1219
diff changeset
128 @return: Deferred list[str]
1217
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129 """
1242
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parents: 1219
diff changeset
130 session_id = profile + '@found@' + service.userhost()
1261
93bce9e4c9c8 plugin XEP-0060: listNodes should not use SatPubSubClient.getDiscoItems but self.host.getDiscoItems, cf. revs 1217 (318eab3f93f8) and 1259 (633fcd13a7dc)
souliane <souliane@mailoo.org>
parents: 1260
diff changeset
131 d = self.host.getDiscoItems(service, nodeIdentifier, profile_key=profile)
1242
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souliane <souliane@mailoo.org>
parents: 1219
diff changeset
132 d.addCallback(lambda result: [item.getAttribute('node') for item in result.toElement().children if item.hasAttribute('node')])
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parents: 1219
diff changeset
133 return self._getDeferredNodeCache(session_id, d, profile)
1217
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134
1242
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parents: 1219
diff changeset
135 def listSubscribedNodes(self, service, nodeIdentifier='', filter_='subscribed', profile=C.PROF_KEY_NONE):
1217
318eab3f93f8 plugin XEP-0060, groupblog: avoid unecessary pubsub errors while doing massive requests:
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diff changeset
136 """Retrieve the name of the nodes to which the profile is subscribed on the target service.
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diff changeset
137
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diff changeset
138 @param service (JID): target service
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diff changeset
139 @param nodeIdentifier (str): the parent node name (leave empty to retrieve all subscriptions)
1242
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parents: 1219
diff changeset
140 @param filter_ (str): filter the result according to the given subscription type:
1217
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parents: 993
diff changeset
141 - None: do not filter
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diff changeset
142 - 'pending': subscription has been approved yet by the node owner
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diff changeset
143 - 'unconfigured': subscription options have not been configured yet
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diff changeset
144 - 'subscribed': subscription is complete
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diff changeset
145 @param profile (str): %(doc_profile)s
1242
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parents: 1219
diff changeset
146 @return: Deferred list[str]
1217
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diff changeset
147 """
1242
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diff changeset
148 session_id = profile + '@subscriptions@' + service.userhost()
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parents: 1219
diff changeset
149 d = self.subscriptions(service, nodeIdentifier, profile_key=profile)
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diff changeset
150 d.addCallback(lambda subs: [sub.getAttribute('node') for sub in subs if sub.getAttribute('subscription') == filter_])
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diff changeset
151 return self._getDeferredNodeCache(session_id, d, profile)
1217
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152
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1a759096ccbd core: use of Const for profile_key + replaced '@DEFAULT@' default profile_key by '@NONE@'
Goffi <goffi@goffi.org>
parents: 891
diff changeset
153 def publish(self, service, nodeIdentifier, items=None, profile_key=C.PROF_KEY_NONE):
594
e629371a28d3 Fix pep8 support in src/plugins.
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parents: 588
diff changeset
154 profile, client = self.__getClientNProfile(profile_key, 'publish item')
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parents: 572
diff changeset
155 return client.publish(service, nodeIdentifier, items, client.parent.jid)
286
3b382fa0ac28 plugin xep-0163: added mood publishing
Goffi <goffi@goffi.org>
parents: 283
diff changeset
156
916
1a759096ccbd core: use of Const for profile_key + replaced '@DEFAULT@' default profile_key by '@NONE@'
Goffi <goffi@goffi.org>
parents: 891
diff changeset
157 def getItems(self, service, node, max_items=None, item_ids=None, sub_id=None, profile_key=C.PROF_KEY_NONE):
594
e629371a28d3 Fix pep8 support in src/plugins.
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diff changeset
158 profile, client = self.__getClientNProfile(profile_key, 'get items')
891
a7b2aacf22ac plugin XEP-0060, groupblog: added nodeIdentifiers attribute to getItems in order to retrieve items by ids
souliane <souliane@mailoo.org>
parents: 811
diff changeset
159 return client.items(service, node, max_items, item_ids, sub_id, client.parent.jid)
303
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diff changeset
160
1217
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diff changeset
161 @defer.inlineCallbacks
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diff changeset
162 def getItemsFromMany(self, service, data, max_items=None, item_ids=None, sub_id=None, profile_key=C.PROF_KEY_NONE):
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diff changeset
163 """Massively retrieve pubsub items from many nodes.
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diff changeset
164
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diff changeset
165 @param service (JID): target service.
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diff changeset
166 @param data (dict): dictionnary binding some arbitrary keys to the node identifiers.
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diff changeset
167 @param max_items (int): optional limit on the number of retrieved items *per node*.
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diff changeset
168 @param item_ids (list[str]): identifiers of the items to be retrieved (should not be used).
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diff changeset
169 @param sub_id (str): optional subscription identifier.
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diff changeset
170 @param profile_key (str): %(doc_profile_key)s
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diff changeset
171 @return: dict binding a subset of the keys of data to Deferred instances.
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diff changeset
172 """
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diff changeset
173 profile, client = self.__getClientNProfile(profile_key, 'get items')
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diff changeset
174 found_nodes = yield self.listNodes(service, profile=profile)
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diff changeset
175 d_dict = {}
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diff changeset
176 for publisher, node in data.items():
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diff changeset
177 if node not in found_nodes:
1246
8b891f9be183 core, plugins: improve a bit some log messages
souliane <souliane@mailoo.org>
parents: 1243
diff changeset
178 log.debug("Skip the items retrieval for [{node}]: node doesn't exist".format(node=node))
1217
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diff changeset
179 continue # avoid pubsub "item-not-found" error
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diff changeset
180 d_dict[publisher] = client.items(service, node, max_items, item_ids, sub_id, client.parent.jid)
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diff changeset
181 defer.returnValue(d_dict)
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182
916
1a759096ccbd core: use of Const for profile_key + replaced '@DEFAULT@' default profile_key by '@NONE@'
Goffi <goffi@goffi.org>
parents: 891
diff changeset
183 def getOptions(self, service, nodeIdentifier, subscriber, subscriptionIdentifier=None, profile_key=C.PROF_KEY_NONE):
594
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parents: 588
diff changeset
184 profile, client = self.__getClientNProfile(profile_key, 'get options')
303
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Goffi <goffi@goffi.org>
parents: 301
diff changeset
185 return client.getOptions(service, nodeIdentifier, subscriber, subscriptionIdentifier)
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parents: 301
diff changeset
186
916
1a759096ccbd core: use of Const for profile_key + replaced '@DEFAULT@' default profile_key by '@NONE@'
Goffi <goffi@goffi.org>
parents: 891
diff changeset
187 def setOptions(self, service, nodeIdentifier, subscriber, options, subscriptionIdentifier=None, profile_key=C.PROF_KEY_NONE):
594
e629371a28d3 Fix pep8 support in src/plugins.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 588
diff changeset
188 profile, client = self.__getClientNProfile(profile_key, 'set options')
303
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Goffi <goffi@goffi.org>
parents: 301
diff changeset
189 return client.setOptions(service, nodeIdentifier, subscriber, options, subscriptionIdentifier)
587
952322b1d490 Remove trailing whitespaces.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 572
diff changeset
190
916
1a759096ccbd core: use of Const for profile_key + replaced '@DEFAULT@' default profile_key by '@NONE@'
Goffi <goffi@goffi.org>
parents: 891
diff changeset
191 def createNode(self, service, nodeIdentifier, options, profile_key=C.PROF_KEY_NONE):
594
e629371a28d3 Fix pep8 support in src/plugins.
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parents: 588
diff changeset
192 profile, client = self.__getClientNProfile(profile_key, 'create node')
303
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parents: 301
diff changeset
193 return client.createNode(service, nodeIdentifier, options)
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parents: 301
diff changeset
194
916
1a759096ccbd core: use of Const for profile_key + replaced '@DEFAULT@' default profile_key by '@NONE@'
Goffi <goffi@goffi.org>
parents: 891
diff changeset
195 def deleteNode(self, service, nodeIdentifier, profile_key=C.PROF_KEY_NONE):
594
e629371a28d3 Fix pep8 support in src/plugins.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 588
diff changeset
196 profile, client = self.__getClientNProfile(profile_key, 'delete node')
303
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Goffi <goffi@goffi.org>
parents: 301
diff changeset
197 return client.deleteNode(service, nodeIdentifier)
587
952322b1d490 Remove trailing whitespaces.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 572
diff changeset
198
916
1a759096ccbd core: use of Const for profile_key + replaced '@DEFAULT@' default profile_key by '@NONE@'
Goffi <goffi@goffi.org>
parents: 891
diff changeset
199 def retractItems(self, service, nodeIdentifier, itemIdentifiers, profile_key=C.PROF_KEY_NONE):
745
812dc38c0094 plugins groupblog (xep-0060, xep-0277): added blog item modification/deletion
souliane <souliane@mailoo.org>
parents: 704
diff changeset
200 profile, client = self.__getClientNProfile(profile_key, 'retract items')
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souliane <souliane@mailoo.org>
parents: 704
diff changeset
201 return client.retractItems(service, nodeIdentifier, itemIdentifiers)
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diff changeset
202
916
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Goffi <goffi@goffi.org>
parents: 891
diff changeset
203 def subscribe(self, service, nodeIdentifier, sub_jid=None, options=None, profile_key=C.PROF_KEY_NONE):
594
e629371a28d3 Fix pep8 support in src/plugins.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 588
diff changeset
204 profile, client = self.__getClientNProfile(profile_key, 'subscribe node')
587
952322b1d490 Remove trailing whitespaces.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 572
diff changeset
205 return client.subscribe(service, nodeIdentifier, sub_jid or client.parent.jid.userhostJID(), options=options)
303
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Goffi <goffi@goffi.org>
parents: 301
diff changeset
206
1217
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souliane <souliane@mailoo.org>
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diff changeset
207 @defer.inlineCallbacks
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diff changeset
208 def subscribeToMany(self, service, nodeIdentifiers, sub_jid=None, options=None, profile_key=C.PROF_KEY_NONE):
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parents: 993
diff changeset
209 """Massively subscribe to many nodes.
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diff changeset
210
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souliane <souliane@mailoo.org>
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diff changeset
211 @param service (JID): target service.
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parents: 993
diff changeset
212 @param nodeIdentifiers (list): the list of node identifiers to subscribe to.
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diff changeset
213 @param sub_id (str): optional subscription identifier.
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parents: 993
diff changeset
214 @param options (list): optional list of subscription options
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souliane <souliane@mailoo.org>
parents: 993
diff changeset
215 @param profile_key (str): %(doc_profile_key)s
1243
b4a264915ea9 plugins groupblogs: fixes the massive retrieval callback (loop variable was misused in a lambda callback)
souliane <souliane@mailoo.org>
parents: 1242
diff changeset
216 @return: list of Deferred instances.
1217
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souliane <souliane@mailoo.org>
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diff changeset
217 """
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diff changeset
218 profile, client = self.__getClientNProfile(profile_key, 'subscribe nodes')
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diff changeset
219 found_nodes = yield self.listNodes(service, profile=profile)
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diff changeset
220 subscribed_nodes = yield self.listSubscribedNodes(service, profile=profile)
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diff changeset
221 d_list = []
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diff changeset
222 for nodeIdentifier in (set(nodeIdentifiers) - set(subscribed_nodes)):
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diff changeset
223 if nodeIdentifier not in found_nodes:
1246
8b891f9be183 core, plugins: improve a bit some log messages
souliane <souliane@mailoo.org>
parents: 1243
diff changeset
224 log.debug("Skip the subscription to [{node}]: node doesn't exist".format(node=nodeIdentifier))
1217
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souliane <souliane@mailoo.org>
parents: 993
diff changeset
225 continue # avoid sat-pubsub "SubscriptionExists" error
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parents: 993
diff changeset
226 d_list.append(client.subscribe(service, nodeIdentifier, sub_jid or client.parent.jid.userhostJID(), options=options))
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diff changeset
227 defer.returnValue(d_list)
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diff changeset
228
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diff changeset
229 def subscriptions(self, service, nodeIdentifier='', profile_key=C.PROF_KEY_NONE):
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diff changeset
230 profile, client = self.__getClientNProfile(profile_key, 'retrieve subscriptions')
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parents: 993
diff changeset
231 return client.subscriptions(service, nodeIdentifier)
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souliane <souliane@mailoo.org>
parents: 993
diff changeset
232
587
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 572
diff changeset
233
1267
ea692d51a0ee plugins XEP-0059, XEP-0060: leave internal wokkel extensions to sat.tmp.wokkel
souliane <souliane@mailoo.org>
parents: 1261
diff changeset
234 class SatPubSubClient(rsm.PubSubClient):
283
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235 implements(disco.IDisco)
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236
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237 def __init__(self, host, parent_plugin):
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238 self.host = host
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239 self.parent_plugin = parent_plugin
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240 rsm.PubSubClient.__init__(self)
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241
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242 def connectionInitialized(self):
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243 rsm.PubSubClient.connectionInitialized(self)
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244
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245 def itemsReceived(self, event):
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246 if not self.host.trigger.point("PubSubItemsReceived", event, self.parent.profile):
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247 return
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248 for node in self.parent_plugin.managedNodes:
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249 if event.nodeIdentifier == node[0]:
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250 node[1](event, self.parent.profile)
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251
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252 def deleteReceived(self, event):
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253 #TODO: manage delete event
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254 log.debug(_("Publish node deleted"))
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255
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256 # def purgeReceived(self, event):
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257
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258 def subscriptions(self, service, nodeIdentifier, sender=None):
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259 """Return the list of subscriptions to the given service and node.
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260
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261 @param service: The publish subscribe service to retrieve the subscriptions from.
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262 @type service: L{JID<twisted.words.protocols.jabber.jid.JID>}
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263 @param nodeIdentifier: The identifier of the node (leave empty to retrieve all subscriptions).
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264 @type nodeIdentifier: C{unicode}
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265 """
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266 request = pubsub.PubSubRequest('subscriptions')
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267 request.recipient = service
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268 request.nodeIdentifier = nodeIdentifier
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269 request.sender = sender
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270 d = request.send(self.xmlstream)
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271
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272 def cb(iq):
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273 return [sub for sub in iq.pubsub.subscriptions.elements() if
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274 (sub.uri == pubsub.NS_PUBSUB and sub.name == 'subscription')]
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275
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276 return d.addCallback(cb)
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277
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278 def getDiscoInfo(self, requestor, service, nodeIdentifier=''):
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279 disco_info = []
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280 self.host.trigger.point("PubSub Disco Info", disco_info, self.parent.profile)
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281 return disco_info
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282
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283 def getDiscoItems(self, requestor, service, nodeIdentifier=''):
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284 return []