view sat_frontends/bridge/bridge_frontend.py @ 3998:402d31527af4

plugin app manager: `start` doesn't wait anymore for actual app start: Application may be long to start (e.g. a Docker app may have to download images first, and even without the downloading, the starting could be long), which may lead to UI blocking or bridge time out. To prevent that, `start` is now returning immediately, and 2 new signals are used to indicate when the application is started, of if something wrong happened. `start` now returns initial app data, including exposed data without the computed exposed data. The computed data must be retrieved after the app has been started.
author Goffi <goffi@goffi.org>
date Sat, 04 Mar 2023 18:30:47 +0100
parents 60d3861e5996
children
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#!/usr/bin/env python3


# SAT communication bridge
# 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/>.


class BridgeException(Exception):
    """An exception which has been raised from the backend and arrived to the frontend."""

    def __init__(self, name, message="", condition=""):
        """

        @param name (str): full exception class name (with module)
        @param message (str): error message
        @param condition (str) : error condition
        """
        super().__init__()
        self.fullname = str(name)
        self.message = str(message)
        self.condition = str(condition) if condition else ""
        self.module, __, self.classname = str(self.fullname).rpartition(".")

    def __str__(self):
        return self.classname + (f": {self.message}" if self.message else "")

    def __eq__(self, other):
        return self.classname == other