Mercurial > libervia-backend
diff src/bridge/bridge_constructor/constructors/embedded/constructor.py @ 2087:159250d66407
bridge (constructor): embedded bridge generator:
"embedded" is used to have backend and frontend together in the same process (frontend call backend as a module).
author | Goffi <goffi@goffi.org> |
---|---|
date | Wed, 05 Oct 2016 22:07:51 +0200 |
parents | |
children | 442423faf220 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/bridge/bridge_constructor/constructors/embedded/constructor.py Wed Oct 05 22:07:51 2016 +0200 @@ -0,0 +1,85 @@ +#!/usr/bin/env python2 +#-*- coding: utf-8 -*- + +# SàT: a XMPP client +# Copyright (C) 2009-2016 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.bridge.bridge_constructor import base_constructor +# from textwraps import dedent + + +class EmbeddedConstructor(base_constructor.Constructor): + NAME = "embedded" + CORE_TEMPLATE = "embedded_template.py" + CORE_DEST = "embedded.py" + CORE_FORMATS = { + 'methods': """\ + def {name}(self, {args}{args_comma}callback=None, errback=None): +{ret_routine} +""", + 'signals': """\ + def {name}(self, {args}): + try: + cb = self._signals_cbs["{category}"]["{name}"] + except KeyError: + log.warning(u"ignoring signal {{}}: no callback registered".format({name})) + else: + cb({args_result}) +""" + } + FRONTEND_TEMPLATE = "embedded_frontend_template.py" + FRONTEND_DEST = CORE_DEST + FRONTEND_FORMATS = {} + + def core_completion_method(self, completion, function, default, arg_doc, async_): + completion.update({ + 'debug': "" if not self.args.debug else 'log.debug ("%s")\n%s' % (completion['name'], 8 * ' '), + 'args_result': self.getArguments(function['sig_in'], name=arg_doc), + 'args_comma': ', ' if function['sig_in'] else '', + }) + + if async_: + completion["cb_or_lambda"] = "callback" if function['sig_out'] else "lambda dummy: callback()" + completion["ret_routine"] = """\ + d = self._methods_cbs["{name}"]({args_result}) + if callback is not None: + d.addCallback({cb_or_lambda}) + if errback is None: + d.addErrback(lambda failure_: log.error(failure_)) + else: + d.addErrback(errback) + return d + """.format(**completion) + else: + completion['ret_or_nothing'] = 'ret' if function['sig_out'] else '' + completion["ret_routine"] = """\ + try: + ret = self._methods_cbs["{name}"]({args_result}) + except Exception as e: + if errback is not None: + errback(e) + else: + raise e + else: + if callback is None: + return ret + else: + callback({ret_or_nothing})""".format(**completion) + + def core_completion_signal(self, completion, function, default, arg_doc, async_): + completion.update({ + 'args_result': self.getArguments(function['sig_in'], name=arg_doc), + })