def run_forever(args, config):
# ensure requiresments, raise SystemExit if failed
os.chdir(os.path.join(os.path.dirname(__file__), '../..'))
ensure_dirs()
# In an ideal world, users are capable to do anything in rcfile,
# including monkeypatch, so we should load rcfile as early as possible
fuoexec_load_rcfile(config)
# Extract config items from args and setup config object,
# since then, no more `args` object, only `config`.
setup_config(args, config)
setup_logger(config)
# create app instance with config
#
# nothing should happen except all objects are created
app = create_app(config)
# do fuoexec initialization before app inits
fuoexec_init(app)
# initialize app with config
#
# all objects can do initialization here. some objects may emit signal,
# some objects may connect with others signals.
init_app(app)
app.initialized.emit(app)
run_app(app)
async def start_app(args, config, sentinal=None):
"""
The param sentinal is currently only used for unittest.
"""
Signal.setup_aio_support()
app = create_app(args, config)
# Do fuoexec initialization before app initialization.
fuoexec_init(app)
# Initialize app with config.
#
# all objects can do initialization here. some objects may emit signal,
# some objects may connect with others signals.
app.initialize()
app.initialized.emit(app)
# Load last state.
app.load_state()
def sighanlder(signum, _):
logger.info('Signal %d is received', signum)
app.exit()
# Handle signals.
signal.signal(signal.SIGTERM, sighanlder)
signal.signal(signal.SIGINT, sighanlder)
if sentinal is None:
sentinal: asyncio.Future = asyncio.Future()
def shutdown(_):
# Since about_to_shutdown signal may emit multiple times
# (QApplication.aboutToQuit emits multiple times),
# we should check if it is already done firstly.
if not sentinal.done():
sentinal.set_result(0)
app.about_to_shutdown.connect(shutdown, weak=False)
# App can exit in several ways.
#
# GUI mode:
# 1. QApplication.quit. QApplication.quit can be called under several circumstances
# 1. User press CMD-Q on macOS.
# 2. User clicks the tray icon exit button.
# 2. SIGTERM is received.
#
# Daemon mode:
# 1. Ctrl-C
# 2. SIGTERM
app.run()
await sentinal
Signal.teardown_aio_support()
def run_once(args, config):
# ignore all warnings since it will pollute the output
warnings.filterwarnings("ignore")
fuoexec_load_rcfile(config)
setup_config(args, config)
app = create_app(config)
fuoexec_init(app)
init_app(app)
app.initialized.emit(app)
future = oncemain(app, args)
if future is not None:
run_app_once(app, future)