Mercurial > libervia-backend
annotate src/plugins/plugin_exp_pubsub_hook.py @ 2513:2d3c9dcec384
plugin XEP-0264: thumbnails handling implementation
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Fri, 02 Mar 2018 17:53:31 +0100 |
| parents | 0046283a285d |
| children |
| rev | line source |
|---|---|
| 2307 | 1 #!/usr/bin/env python2 |
| 2 # -*- coding: utf-8 -*- | |
| 3 | |
| 4 # SAT plugin for Pubsub Hooks | |
| 2483 | 5 # Copyright (C) 2009-2018 Jérôme Poisson (goffi@goffi.org) |
| 2307 | 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 from sat.core.i18n import _ | |
| 21 from sat.core.constants import Const as C | |
| 22 from sat.core import exceptions | |
| 23 from sat.core.log import getLogger | |
| 24 from sat.memory import persistent | |
| 25 from twisted.words.protocols.jabber import jid | |
| 26 from twisted.internet import defer | |
| 27 log = getLogger(__name__) | |
| 28 | |
| 29 NS_PUBSUB_HOOK = 'PUBSUB_HOOK' | |
| 30 | |
| 31 PLUGIN_INFO = { | |
| 32 C.PI_NAME: "PubSub Hook", | |
| 33 C.PI_IMPORT_NAME: NS_PUBSUB_HOOK, | |
| 34 C.PI_TYPE: "EXP", | |
| 35 C.PI_PROTOCOLS: [], | |
| 36 C.PI_DEPENDENCIES: ["XEP-0060"], | |
| 37 C.PI_MAIN: "PubsubHook", | |
| 38 C.PI_HANDLER: "no", | |
| 39 C.PI_DESCRIPTION: _("""Experimental plugin to launch on action on Pubsub notifications""") | |
| 40 } | |
| 41 | |
| 42 # python module | |
| 43 HOOK_TYPE_PYTHON = u'python' | |
| 44 # python file path | |
| 45 HOOK_TYPE_PYTHON_FILE = u'python_file' | |
| 46 # python code directly | |
| 47 HOOK_TYPE_PYTHON_CODE = u'python_code' | |
| 48 HOOK_TYPES = (HOOK_TYPE_PYTHON, HOOK_TYPE_PYTHON_FILE, HOOK_TYPE_PYTHON_CODE) | |
| 49 | |
| 50 | |
| 51 class PubsubHook(object): | |
| 52 | |
| 53 def __init__(self, host): | |
| 54 log.info(_(u"PubSub Hook initialization")) | |
| 55 self.host = host | |
| 56 self.node_hooks = {} # keep track of the number of hooks per node (for all profiles) | |
| 57 host.bridge.addMethod("psHookAdd", ".plugin", | |
| 58 in_sign='ssssbs', out_sign='', | |
| 59 method=self._addHook | |
| 60 ) | |
| 61 host.bridge.addMethod("psHookRemove", ".plugin", | |
| 62 in_sign='sssss', out_sign='i', | |
| 63 method=self._removeHook | |
| 64 ) | |
| 65 host.bridge.addMethod("psHookList", ".plugin", | |
| 66 in_sign='s', out_sign='aa{ss}', | |
| 67 method=self._listHooks | |
| 68 ) | |
| 69 | |
| 70 @defer.inlineCallbacks | |
| 71 def profileConnected(self, client): | |
| 72 hooks = client._hooks = persistent.PersistentBinaryDict(NS_PUBSUB_HOOK, client.profile) | |
| 73 client._hooks_temporary = {} | |
| 74 yield hooks.load() | |
| 75 for node in hooks: | |
| 76 self._installNodeManager(client, node) | |
| 77 | |
| 78 def profileDisconnected(self, client): | |
| 79 for node in client._hooks: | |
| 80 self._removeNodeManager(client, node) | |
| 81 | |
| 82 def _installNodeManager(self, client, node): | |
| 83 if node in self.node_hooks: | |
| 84 log.debug(_(u"node manager already set for {node}").format(node=node)) | |
| 85 self.node_hooks[node] += 1 | |
| 86 else: | |
| 87 # first hook on this node | |
| 88 self.host.plugins['XEP-0060'].addManagedNode(node, items_cb=self._itemsReceived) | |
| 89 self.node_hooks[node] = 0 | |
| 90 log.info(_(u"node manager installed on {node}").format( | |
| 91 node = node)) | |
| 92 | |
| 93 def _removeNodeManager(self, client, node): | |
| 94 try: | |
| 95 self.node_hooks[node] -= 1 | |
| 96 except KeyError: | |
| 97 log.error(_(u"trying to remove a {node} without hook").format(node=node)) | |
| 98 else: | |
| 99 if self.node_hooks[node] == 0: | |
| 100 del self.node_hooks[node] | |
| 101 self.host.plugins['XEP-0060'].removeManagedNode(node, self._itemsReceived) | |
| 102 log.debug(_(u"hook removed")) | |
| 103 else: | |
| 104 log.debug(_(u"node still needed for an other hook")) | |
| 105 | |
| 106 def installHook(self, client, service, node, hook_type, hook_arg, persistent): | |
| 107 if hook_type not in HOOK_TYPES: | |
| 108 raise exceptions.DataError(_(u'{hook_type} is not handled').format(hook_type=hook_type)) | |
| 109 if hook_type != HOOK_TYPE_PYTHON_FILE: | |
| 110 raise NotImplementedError(_(u'{hook_type} hook type not implemented yet').format(hook_type=hook_type)) | |
| 111 self._installNodeManager(client, node) | |
| 112 hook_data = {'service': service, | |
| 113 'type': hook_type, | |
| 114 'arg': hook_arg | |
| 115 } | |
| 116 | |
| 117 if persistent: | |
| 118 hooks_list = client._hooks.setdefault(node,[]) | |
| 119 hooks_list.append(hook_data) | |
| 120 client._hooks.force(node) | |
| 121 else: | |
| 122 hooks_list = client._hooks_temporary.setdefault(node,[]) | |
| 123 hooks_list.append(hook_data) | |
| 124 | |
| 125 log.info(_(u"{persistent} hook installed on {node} for {profile}").format( | |
| 126 persistent = _(u'persistent') if persistent else _(u'temporary'), | |
| 127 node = node, | |
| 128 profile = client.profile)) | |
| 129 | |
| 130 def _itemsReceived(self, client, itemsEvent): | |
| 131 node = itemsEvent.nodeIdentifier | |
| 132 for hooks in (client._hooks, client._hooks_temporary): | |
| 133 if node not in hooks: | |
| 134 continue | |
| 135 hooks_list = hooks[node] | |
| 136 for hook_data in hooks_list[:]: | |
| 137 if hook_data['service'] != itemsEvent.sender.userhostJID(): | |
| 138 continue | |
| 139 try: | |
| 140 callback = hook_data['callback'] | |
| 141 except KeyError: | |
| 142 # first time we get this hook, we create the callback | |
| 143 hook_type = hook_data['type'] | |
| 144 try: | |
| 145 if hook_type == HOOK_TYPE_PYTHON_FILE: | |
| 146 hook_globals = {} | |
| 147 execfile(hook_data['arg'], hook_globals) | |
| 148 callback = hook_globals['hook'] | |
| 149 else: | |
| 150 raise NotImplementedError(_(u'{hook_type} hook type not implemented yet').format( | |
| 151 hook_type=hook_type)) | |
| 152 except Exception as e: | |
| 153 log.warning(_(u"Can't load Pubsub hook at node {node}, it will be removed: {reason}").format( | |
| 154 node=node, reason=e)) | |
| 155 hooks_list.remove(hook_data) | |
| 156 continue | |
| 157 | |
| 158 for item in itemsEvent.items: | |
| 159 try: | |
| 160 callback(self.host, client, item) | |
| 161 except Exception as e: | |
| 162 log.warning(_(u"Error while running Pubsub hook for node {node}: {msg}").format( | |
| 163 node = node, | |
| 164 msg = e)) | |
| 165 | |
| 166 def _addHook(self, service, node, hook_type, hook_arg, persistent, profile): | |
| 167 client = self.host.getClient(profile) | |
| 168 service = jid.JID(service) if service else client.jid.userhostJID() | |
| 169 return self.addHook(client, service, unicode(node), unicode(hook_type), unicode(hook_arg), persistent) | |
| 170 | |
| 171 def addHook(self, client, service, node, hook_type, hook_arg, persistent): | |
| 172 r"""Add a hook which will be triggered on a pubsub notification | |
| 173 | |
| 174 @param service(jid.JID): service of the node | |
| 175 @param node(unicode): Pubsub node | |
| 176 @param hook_type(unicode): type of the hook, one of: | |
| 177 - HOOK_TYPE_PYTHON: a python module (must be in path) | |
| 178 module must have a "hook" method which will be called | |
| 179 - HOOK_TYPE_PYTHON_FILE: a python file | |
| 180 file must have a "hook" method which will be called | |
| 181 - HOOK_TYPE_PYTHON_CODE: direct python code | |
|
2444
30278ea1ca7c
plugin XEP-0060: added node watching methods to bridge:
Goffi <goffi@goffi.org>
parents:
2307
diff
changeset
|
182 /!\ Python hooks will be executed in SàT context, |
| 2307 | 183 with host, client and item as arguments, it means that: |
| 184 - they can do whatever they wants, so don't run untrusted hooks | |
| 185 - they MUST NOT BLOCK, they are run in Twisted async environment and blocking would block whole SàT process | |
| 186 - item are domish.Element | |
| 187 @param hook_arg(unicode): argument of the hook, depending on the hook_type | |
| 188 can be a module path, file path, python code | |
| 189 """ | |
| 190 assert service is not None | |
| 191 return self.installHook(client, service, node, hook_type, hook_arg, persistent) | |
| 192 | |
| 193 def _removeHook(self, service, node, hook_type, hook_arg, profile): | |
| 194 client = self.host.getClient(profile) | |
| 195 service = jid.JID(service) if service else client.jid.userhostJID() | |
| 196 return self.removeHook(client, service, node, hook_type or None, hook_arg or None) | |
| 197 | |
| 198 def removeHook(self, client, service, node, hook_type=None, hook_arg=None): | |
| 199 """Remove a persistent or temporaty root | |
| 200 | |
| 201 @param service(jid.JID): service of the node | |
| 202 @param node(unicode): Pubsub node | |
| 203 @param hook_type(unicode, None): same as for [addHook] | |
| 204 match all if None | |
| 205 @param hook_arg(unicode, None): same as for [addHook] | |
| 206 match all if None | |
| 207 @return(int): number of hooks removed | |
| 208 """ | |
| 209 removed = 0 | |
| 210 for hooks in (client._hooks, client._hooks_temporary): | |
| 211 if node in hooks: | |
| 212 for hook_data in hooks[node]: | |
| 213 if (service != hook_data[u'service'] | |
| 214 or hook_type is not None and hook_type != hook_data[u'type'] | |
| 215 or hook_arg is not None and hook_arg != hook_data[u'arg']): | |
| 216 continue | |
| 217 hooks[node].remove(hook_data) | |
| 218 removed += 1 | |
| 219 if not hooks[node]: | |
| 220 # no more hooks, we can remove the node | |
| 221 del hooks[node] | |
| 222 self._removeNodeManager(client, node) | |
| 223 else: | |
| 224 if hooks == client._hooks: | |
| 225 hooks.force(node) | |
| 226 return removed | |
| 227 | |
| 228 def _listHooks(self, profile): | |
| 229 hooks_list = self.listHooks(self.host.getClient(profile)) | |
| 230 for hook in hooks_list: | |
| 231 hook[u'service'] = hook[u'service'].full() | |
| 232 hook[u'persistent'] = C.boolConst(hook[u'persistent']) | |
| 233 return hooks_list | |
| 234 | |
| 235 def listHooks(self, client): | |
| 236 """return list of registered hooks""" | |
| 237 hooks_list = [] | |
| 238 for hooks in (client._hooks, client._hooks_temporary): | |
| 239 persistent = hooks is client._hooks | |
| 240 for node, hooks_data in hooks.iteritems(): | |
| 241 for hook_data in hooks_data: | |
| 242 hooks_list.append({u'service': hook_data[u'service'], | |
| 243 u'node': node, | |
| 244 u'type': hook_data[u'type'], | |
| 245 u'arg': hook_data[u'arg'], | |
| 246 u'persistent': persistent | |
| 247 }) | |
| 248 return hooks_list | |
| 249 |