view sat_frontends/jp/loops.py @ 3942:a92eef737703

plugin XEP-0373: download public keys if they are not found in local storage: public keys were only obtained from PEP notifications, however this wasn't working if the entity was not in our roster. Now if no public key is retrieved from local storage, the public key node is requested, and an error is raised if nothing is found. This allows the use of OX with entities which are not in roster. rel 380
author Goffi <goffi@goffi.org>
date Sat, 15 Oct 2022 20:38:33 +0200
parents be6d91572633
children 524856bd7b19
line wrap: on
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#!/usr/bin/env python3

# jp: a SAT command line tool
# 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 sys
import asyncio
import logging as log
from sat.core.i18n import _
from sat_frontends.jp.constants import Const as C

log.basicConfig(level=log.WARNING,
                format='[%(name)s] %(message)s')

USER_INTER_MSG = _("User interruption: good bye")


class QuitException(BaseException):
    """Quitting is requested

    This is used to stop execution when host.quit() is called
    """


def getJPLoop(bridge_name):
    if 'dbus' in bridge_name:
        import signal
        import threading
        from gi.repository import GLib

        class JPLoop:

            def run(self, jp, args, namespace):
                signal.signal(signal.SIGINT, self._on_sigint)
                self._glib_loop = GLib.MainLoop()
                threading.Thread(target=self._glib_loop.run).start()
                loop = asyncio.get_event_loop()
                loop.run_until_complete(jp.main(args=args, namespace=namespace))
                loop.run_forever()

            def quit(self, exit_code):
                loop = asyncio.get_event_loop()
                loop.stop()
                self._glib_loop.quit()
                sys.exit(exit_code)

            def call_later(self, delay, callback, *args):
                """call a callback repeatedly

                @param delay(int): delay between calls in s
                @param callback(callable): method to call
                    if the callback return True, the call will continue
                    else the calls will stop
                @param *args: args of the callbac
                """
                loop = asyncio.get_event_loop()
                loop.call_later(delay, callback, *args)

            def _on_sigint(self, sig_number, stack_frame):
                """Called on keyboard interruption

                Print user interruption message, set exit code and stop reactor
                """
                print("\r" + USER_INTER_MSG)
                self.quit(C.EXIT_USER_CANCELLED)
    else:
        import signal
        from twisted.internet import asyncioreactor
        asyncioreactor.install()
        from twisted.internet import reactor, defer

        class JPLoop:

            def __init__(self):
                # exit code must be set when using quit, so if it's not set
                # something got wrong and we must report it
                self._exit_code = C.EXIT_INTERNAL_ERROR

            def run(self, jp, *args):
                self.jp = jp
                signal.signal(signal.SIGINT, self._on_sigint)
                defer.ensureDeferred(self._start(jp, *args))
                try:
                    reactor.run(installSignalHandlers=False)
                except SystemExit as e:
                    self._exit_code = e.code
                sys.exit(self._exit_code)

            async def _start(self, jp, *args):
                fut = asyncio.ensure_future(jp.main(*args))
                try:
                    await defer.Deferred.fromFuture(fut)
                except BaseException:
                    import traceback
                    traceback.print_exc()
                    jp.quit(1)

            def quit(self, exit_code):
                self._exit_code = exit_code
                reactor.stop()

            def _timeout_cb(self, args, callback, delay):
                try:
                    ret = callback(*args)
                # FIXME: temporary hack to avoid traceback when using XMLUI
                #        to be removed once create_task is not used anymore in
                #        xmlui_manager (i.e. once sat_frontends.tools.xmlui fully supports
                #        async syntax)
                except QuitException:
                    return
                if ret:
                    reactor.callLater(delay, self._timeout_cb, args, callback, delay)

            def call_later(self, delay, callback, *args):
                reactor.callLater(delay, self._timeout_cb, args, callback, delay)

            def _on_sigint(self, sig_number, stack_frame):
                """Called on keyboard interruption

                Print user interruption message, set exit code and stop reactor
                """
                print("\r" + USER_INTER_MSG)
                self._exit_code = C.EXIT_USER_CANCELLED
                reactor.callFromThread(reactor.stop)


    if bridge_name == "embedded":
        raise NotImplementedError
        # from sat.core import sat_main
        # sat = sat_main.SAT()

    return JPLoop