Mercurial > libervia-backend
view sat/bridge/bridge_constructor/constructors/pb/pb_core_template.py @ 2975:d86ecc34516e
logs: increased defaut limit for memory output to 300
author | Goffi <goffi@goffi.org> |
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date | Sun, 30 Jun 2019 15:40:52 +0200 |
parents | 0f277708e2ae |
children | ab2696e34d29 |
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#!/usr/bin/env python2 # -*- coding: utf-8 -*- # SAT: a jabber client # Copyright (C) 2009-2019 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/>. from sat.core.log import getLogger from twisted.spread import jelly, pb from twisted.internet import reactor 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 class PBRoot(pb.Root): def __init__(self): self.signals_handlers = [] def remote_initBridge(self, signals_handler): self.signals_handlers.append(signals_handler) log.info(u"registered signal handler") def sendSignalEb(self, failure, signal_name): log.error( u"Error while sending signal {name}: {msg}".format( name=signal_name, msg=failure ) ) def sendSignal(self, name, args, kwargs): to_remove = [] for handler in self.signals_handlers: try: d = handler.callRemote(name, *args, **kwargs) except pb.DeadReferenceError: to_remove.append(handler) else: d.addErrback(self.sendSignalEb, name) if to_remove: for handler in to_remove: log.debug(u"Removing signal handler for dead frontend") self.signals_handlers.remove(handler) def _bridgeDeactivateSignals(self): if hasattr(self, "signals_paused"): log.warning(u"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(u"bridge signals have been deactivated") def _bridgeReactivateSignals(self): try: self.signals_handlers = self.signals_paused except AttributeError: log.debug(u"signals were already activated") else: del self.signals_paused log.debug(u"bridge signals have been reactivated") ##METHODS_PART## class Bridge(object): def __init__(self): log.info("Init Perspective Broker...") self.root = PBRoot() reactor.listenTCP(8789, pb.PBServerFactory(self.root)) 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(u"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##