Gradience/gradience/frontend/utils/run_async.py

64 lines
2 KiB
Python

# run_async.py
#
# Change the look of Adwaita, with ease
# Copyright (C) 2022 Gradience Team
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
import sys
import threading
import traceback
from gi.repository import GLib
from gradience.backend.logger import Logger
logging = Logger()
class RunAsync(threading.Thread):
def __init__(self, task_func, callback=None, *args, **kwargs):
self.source_id = None
if threading.current_thread() is not threading.main_thread():
raise AssertionError
super(RunAsync, self).__init__(
target=self.target, args=args, kwargs=kwargs)
self.task_func = task_func
self.callback = callback if callback else lambda r, e: None
self.daemon = kwargs.pop("daemon", True)
self.start()
def target(self, *args, **kwargs):
result = None
error = None
logging.debug(f"Running async job [{self.task_func}].")
try:
result = self.task_func(*args, **kwargs)
except Exception as e:
logging.error(f"Error while running async job: {self.task_func}", exc=e)
error = exception
_ex_type, _ex_value, trace = sys.exc_info()
traceback.print_tb(trace)
traceback_info = "\n".join(traceback.format_tb(trace))
logging.error([str(exception), traceback_info])
self.source_id = GLib.idle_add(self.callback, result, error)
return self.source_id