Mercurial > libervia-backend
diff libervia/backend/bridge/bridge_constructor/constructors/embedded/embedded_template.py @ 4071:4b842c1fb686
refactoring: renamed `sat` package to `libervia.backend`
author | Goffi <goffi@goffi.org> |
---|---|
date | Fri, 02 Jun 2023 11:49:51 +0200 |
parents | sat/bridge/bridge_constructor/constructors/embedded/embedded_template.py@524856bd7b19 |
children | 0d7bb4df2343 |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libervia/backend/bridge/bridge_constructor/constructors/embedded/embedded_template.py Fri Jun 02 11:49:51 2023 +0200 @@ -0,0 +1,123 @@ +#!/usr/bin/env python3 + + +# Libervia: an XMPP 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/>. + +from libervia.backend.core.log import getLogger + +log = getLogger(__name__) +from libervia.backend.core import exceptions + + +class _Bridge(object): + def __init__(self): + log.debug("Init embedded bridge...") + self._methods_cbs = {} + self._signals_cbs = {"core": {}, "plugin": {}} + + def bridge_connect(self, callback, errback): + callback() + + def register_method(self, name, callback): + log.debug("registering embedded bridge method [{}]".format(name)) + if name in self._methods_cbs: + raise exceptions.ConflictError("method {} is already regitered".format(name)) + self._methods_cbs[name] = callback + + def register_signal(self, functionName, handler, iface="core"): + iface_dict = self._signals_cbs[iface] + if functionName in iface_dict: + raise exceptions.ConflictError( + "signal {name} is already regitered for interface {iface}".format( + name=functionName, iface=iface + ) + ) + iface_dict[functionName] = handler + + def call_method(self, name, out_sign, async_, args, kwargs): + callback = kwargs.pop("callback", None) + errback = kwargs.pop("errback", None) + if async_: + d = self._methods_cbs[name](*args, **kwargs) + if callback is not None: + d.addCallback(callback if out_sign else lambda __: callback()) + if errback is None: + d.addErrback(lambda failure_: log.error(failure_)) + else: + d.addErrback(errback) + return d + else: + try: + ret = self._methods_cbs[name](*args, **kwargs) + except Exception as e: + if errback is not None: + errback(e) + else: + raise e + else: + if callback is None: + return ret + else: + if out_sign: + callback(ret) + else: + callback() + + def send_signal(self, name, args, kwargs): + try: + cb = self._signals_cbs["plugin"][name] + except KeyError: + log.debug("ignoring signal {}: no callback registered".format(name)) + else: + cb(*args, **kwargs) + + def add_method(self, name, int_suffix, in_sign, out_sign, method, async_=False, doc={}): + # FIXME: doc parameter is kept only temporary, the time to remove it from calls + log.debug("Adding method [{}] to embedded bridge".format(name)) + self.register_method(name, method) + setattr( + self.__class__, + name, + lambda self_, *args, **kwargs: self.call_method( + name, out_sign, async_, args, kwargs + ), + ) + + def add_signal(self, name, int_suffix, signature, doc={}): + setattr( + self.__class__, + name, + lambda self_, *args, **kwargs: self.send_signal(name, args, kwargs), + ) + + ## signals ## + + +##SIGNALS_PART## +## methods ## + +##METHODS_PART## + +# we want the same instance for both core and frontend +bridge = None + + +def bridge(): + global bridge + if bridge is None: + bridge = _Bridge() + return bridge