Mercurial > libervia-pubsub
annotate sat_pubsub/schema.py @ 417:412d26a9b2c2
import sat/wokkel modules only when making service:
when importing some sat/wokkel module, a reactor is installed. This can cause trouble when
using sat_pubsub along with other twisted plugin installing a specific reactor (which is
the case for SàT backend and Libervia).
This patch works around it by importing those modules only when making the service.
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Tue, 08 Oct 2019 12:04:13 +0200 |
| parents | ccb2a22ea0fc |
| children |
| rev | line source |
|---|---|
| 414 | 1 #!/usr/bin/env python3 |
| 352 | 2 #-*- coding: utf-8 -*- |
| 3 # | |
| 4 # Copyright (c) 2015 Jérôme Poisson | |
| 5 | |
| 6 | |
| 7 # This program is free software: you can redistribute it and/or modify | |
| 8 # it under the terms of the GNU Affero General Public License as published by | |
| 9 # the Free Software Foundation, either version 3 of the License, or | |
| 10 # (at your option) any later version. | |
| 11 | |
| 12 # This program is distributed in the hope that it will be useful, | |
| 13 # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 15 # GNU Affero General Public License for more details. | |
| 16 | |
| 17 # You should have received a copy of the GNU Affero General Public License | |
| 18 # along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 19 | |
| 20 # --- | |
| 21 | |
| 22 # This module implements node schema | |
| 23 | |
| 24 from twisted.words.protocols.jabber import jid | |
| 25 from twisted.words.xish import domish | |
| 26 from wokkel import disco, iwokkel | |
| 27 from wokkel.iwokkel import IPubSubService | |
| 28 from wokkel.subprotocols import XMPPHandler, IQHandlerMixin | |
| 29 from wokkel import data_form, pubsub | |
| 414 | 30 from zope.interface import implementer |
| 352 | 31 from sat_pubsub import const |
| 32 | |
| 33 QUERY_SCHEMA = "/pubsub[@xmlns='" + const.NS_SCHEMA + "']" | |
| 34 | |
| 35 | |
| 414 | 36 @implementer(iwokkel.IDisco) |
| 352 | 37 class SchemaHandler(XMPPHandler, IQHandlerMixin): |
| 38 iqHandlers = {"/iq[@type='get']" + QUERY_SCHEMA: 'onSchemaGet', | |
| 39 "/iq[@type='set']" + QUERY_SCHEMA: 'onSchemaSet'} | |
| 40 | |
| 41 def __init__(self): | |
| 42 super(SchemaHandler, self).__init__() | |
| 43 self.pubsub_service = None | |
| 44 | |
| 45 def connectionInitialized(self): | |
| 46 for handler in self.parent.handlers: | |
| 47 if IPubSubService.providedBy(handler): | |
| 48 self.pubsub_service = handler | |
| 49 break | |
| 50 self.backend = self.parent.parent.getServiceNamed('backend') | |
| 51 self.xmlstream.addObserver("/iq[@type='get' or @type='set']" + QUERY_SCHEMA, self.handleRequest) | |
| 52 | |
| 53 def _getNodeSchemaCb(self, x_elt, nodeIdentifier): | |
| 54 schema_elt = domish.Element((const.NS_SCHEMA, 'schema')) | |
| 55 schema_elt['node'] = nodeIdentifier | |
| 56 if x_elt is not None: | |
| 414 | 57 assert x_elt.uri == 'jabber:x:data' |
| 352 | 58 schema_elt.addChild(x_elt) |
| 59 return schema_elt | |
| 60 | |
| 61 def onSchemaGet(self, iq_elt): | |
| 62 try: | |
| 63 schema_elt = next(iq_elt.pubsub.elements(const.NS_SCHEMA, 'schema')) | |
| 64 nodeIdentifier = schema_elt['node'] | |
| 65 except StopIteration: | |
| 66 raise pubsub.BadRequest(text='missing schema element') | |
| 67 except KeyError: | |
| 68 raise pubsub.BadRequest(text='missing node') | |
| 69 pep = iq_elt.delegated | |
| 70 recipient = jid.JID(iq_elt['to']) | |
| 71 d = self.backend.getNodeSchema(nodeIdentifier, | |
| 72 pep, | |
| 73 recipient) | |
| 74 d.addCallback(self._getNodeSchemaCb, nodeIdentifier) | |
| 75 return d.addErrback(self.pubsub_service.resource._mapErrors) | |
| 76 | |
| 77 def onSchemaSet(self, iq_elt): | |
| 78 try: | |
| 79 schema_elt = next(iq_elt.pubsub.elements(const.NS_SCHEMA, 'schema')) | |
| 80 nodeIdentifier = schema_elt['node'] | |
| 81 except StopIteration: | |
| 82 raise pubsub.BadRequest(text='missing schema element') | |
| 83 except KeyError: | |
| 84 raise pubsub.BadRequest(text='missing node') | |
| 85 requestor = jid.JID(iq_elt['from']) | |
| 86 pep = iq_elt.delegated | |
| 87 recipient = jid.JID(iq_elt['to']) | |
|
361
a92f482ff14f
schema: allow free FORM_TYPE as this is used for items validation, and should not be in schema namespace
Goffi <goffi@goffi.org>
parents:
352
diff
changeset
|
88 try: |
| 414 | 89 x_elt = next(schema_elt.elements(data_form.NS_X_DATA, 'x')) |
|
361
a92f482ff14f
schema: allow free FORM_TYPE as this is used for items validation, and should not be in schema namespace
Goffi <goffi@goffi.org>
parents:
352
diff
changeset
|
90 except StopIteration: |
| 352 | 91 # no schema form has been found |
| 92 x_elt = None | |
| 93 d = self.backend.setNodeSchema(nodeIdentifier, | |
| 94 x_elt, | |
| 95 requestor, | |
| 96 pep, | |
| 97 recipient) | |
| 98 return d.addErrback(self.pubsub_service.resource._mapErrors) | |
| 99 | |
| 100 def getDiscoInfo(self, requestor, service, nodeIdentifier=''): | |
| 101 return [disco.DiscoFeature(const.NS_SCHEMA)] | |
| 102 | |
| 103 def getDiscoItems(self, requestor, service, nodeIdentifier=''): | |
| 104 return [] |