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https://github.com/freedombox/FreedomBox.git
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9cf84286f4
Signed-off-by: Sunil Mohan Adapa <sunil@medhas.org> Reviewed-by: James Valleroy <jvalleroy@mailbox.org>
85 lines
2.4 KiB
Python
85 lines
2.4 KiB
Python
#
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# This file is part of FreedomBox.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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"""
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Module to handle glib main loop and provide asynchronous utilities.
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"""
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import logging
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import threading
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from plinth import dbus, network
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from plinth.utils import import_from_gi
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glib = import_from_gi('GLib', '2.0')
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_thread = None
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_main_loop = None
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logger = logging.getLogger(__name__)
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def run():
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"""Run a glib main loop forever in a thread."""
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global _thread
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_thread = threading.Thread(target=_run)
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_thread.start()
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def stop():
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"""Exit glib main loop and end the thread."""
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if _main_loop:
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logger.info('Exiting glib main loop')
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_main_loop.quit()
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def _run():
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"""Connect to D-Bus and run main loop."""
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logger.info('Started new thread for glib main loop.')
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# Initialize all modules that use glib main loop
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dbus.init()
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network.init()
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global _main_loop
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_main_loop = glib.MainLoop()
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_main_loop.run()
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_main_loop = None
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logger.info('Glib main loop thread exited.')
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def schedule(interval, method, data=None, in_thread=True):
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"""Schedule a recurring call to a method with fixed interval."""
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def _runner():
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"""Run the target method and log and exceptions."""
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try:
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return method(data)
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except Exception as exception: # pylint: disable=broad-except
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logger.exception('Exception in running scheduled method - %s',
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exception)
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def _run_bare_or_thread(_user_data):
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"""Run the target method in thread or directly (if async)."""
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if not in_thread:
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return _runner()
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thread = threading.Thread(target=_runner)
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thread.start()
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return True
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glib.timeout_add(int(interval * 1000), _run_bare_or_thread, None)
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