Mercurial > libervia-backend
view sat/bridge/bridge_constructor/constructors/pb/pb_core_template.py @ 3792:865167c34b82
comp AP gateway: convert pubsub item retractation to AP `Delete` activity:
when an item `retract` is received from a node from which an AP actor is subscribed, a
corresponding `Delete` activity is created and sent to AP followers.
Trying to retract an item from a virtual node of the gateway pubsub service now return a
`forbidden` stanza error (those nodes are handled on AP side and thus are not owned by
XMPP entities).
rel 367
author | Goffi <goffi@goffi.org> |
---|---|
date | Fri, 17 Jun 2022 14:15:23 +0200 |
parents | 3c7a64d6f49f |
children | 524856bd7b19 |
line wrap: on
line source
#!/usr/bin/env python3 # SAT: a jabber client # Copyright (C) 2009-2021 Jérôme Poisson (goffi@goffi.org) # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU Affero General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU Affero General Public License for more details. # You should have received a copy of the GNU Affero General Public License # along with this program. If not, see <http://www.gnu.org/licenses/>. import dataclasses from functools import partial from pathlib import Path from twisted.spread import jelly, pb from twisted.internet import reactor from sat.core.log import getLogger from sat.tools import config log = getLogger(__name__) ## jelly hack # we monkey patch jelly to handle namedtuple ori_jelly = jelly._Jellier.jelly def fixed_jelly(self, obj): """this method fix handling of namedtuple""" if isinstance(obj, tuple) and not obj is tuple: obj = tuple(obj) return ori_jelly(self, obj) jelly._Jellier.jelly = fixed_jelly @dataclasses.dataclass(eq=False) class HandlerWrapper: # we use a wrapper to keep signals handlers because RemoteReference doesn't support # comparison (other than equality), making it unusable with a list handler: pb.RemoteReference class PBRoot(pb.Root): def __init__(self): self.signals_handlers = [] def remote_initBridge(self, signals_handler): self.signals_handlers.append(HandlerWrapper(signals_handler)) log.info("registered signal handler") def sendSignalEb(self, failure_, signal_name): if not failure_.check(pb.PBConnectionLost): log.error( f"Error while sending signal {signal_name}: {failure_}", ) def sendSignal(self, name, args, kwargs): to_remove = [] for wrapper in self.signals_handlers: handler = wrapper.handler try: d = handler.callRemote(name, *args, **kwargs) except pb.DeadReferenceError: to_remove.append(wrapper) else: d.addErrback(self.sendSignalEb, name) if to_remove: for wrapper in to_remove: log.debug("Removing signal handler for dead frontend") self.signals_handlers.remove(wrapper) def _bridgeDeactivateSignals(self): if hasattr(self, "signals_paused"): log.warning("bridge signals already deactivated") if self.signals_handler: self.signals_paused.extend(self.signals_handler) else: self.signals_paused = self.signals_handlers self.signals_handlers = [] log.debug("bridge signals have been deactivated") def _bridgeReactivateSignals(self): try: self.signals_handlers = self.signals_paused except AttributeError: log.debug("signals were already activated") else: del self.signals_paused log.debug("bridge signals have been reactivated") ##METHODS_PART## class Bridge(object): def __init__(self): log.info("Init Perspective Broker...") self.root = PBRoot() conf = config.parseMainConf() getConf = partial(config.getConf, conf, "bridge_pb", "") conn_type = getConf("connection_type", "unix_socket") if conn_type == "unix_socket": local_dir = Path(config.getConfig(conf, "", "local_dir")).resolve() socket_path = local_dir / "bridge_pb" log.info(f"using UNIX Socket at {socket_path}") reactor.listenUNIX( str(socket_path), pb.PBServerFactory(self.root), mode=0o600 ) elif conn_type == "socket": port = int(getConf("port", 8789)) log.info(f"using TCP Socket at port {port}") reactor.listenTCP(port, pb.PBServerFactory(self.root)) else: raise ValueError(f"Unknown pb connection type: {conn_type!r}") def sendSignal(self, name, *args, **kwargs): self.root.sendSignal(name, args, kwargs) def remote_initBridge(self, signals_handler): self.signals_handlers.append(signals_handler) log.info("registered signal handler") def register_method(self, name, callback): log.debug("registering PB bridge method [%s]" % name) setattr(self.root, "remote_" + name, callback) # self.root.register_method(name, callback) def addMethod( self, name, int_suffix, in_sign, out_sign, method, async_=False, doc={} ): """Dynamically add a method to PB Bridge""" # FIXME: doc parameter is kept only temporary, the time to remove it from calls log.debug("Adding method {name} to PB bridge".format(name=name)) self.register_method(name, method) def addSignal(self, name, int_suffix, signature, doc={}): log.debug("Adding signal {name} to PB bridge".format(name=name)) setattr( self, name, lambda *args, **kwargs: self.sendSignal(name, *args, **kwargs) ) def bridgeDeactivateSignals(self): """Stop sending signals to bridge Mainly used for mobile frontends, when the frontend is paused """ self.root._bridgeDeactivateSignals() def bridgeReactivateSignals(self): """Send again signals to bridge Should only be used after bridgeDeactivateSignals has been called """ self.root._bridgeReactivateSignals() ##SIGNALS_PART##