mirror of
https://github.com/langbot-app/LangBot.git
synced 2026-07-21 20:06:06 +00:00
Junyan Qin
84 lines
2.3 KiB
Python
84 lines
2.3 KiB
Python
from __future__ import annotations
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import traceback
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import asyncio
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import os
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from . import app
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from . import stage
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from ..utils import constants, importutil
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# Import startup stage implementation to register
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from . import stages
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importutil.import_modules_in_pkg(stages)
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stage_order = [
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'LoadConfigStage',
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'GenKeysStage',
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'SetupLoggerStage',
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'BuildAppStage',
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'ShowNotesStage',
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]
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async def make_app(loop: asyncio.AbstractEventLoop) -> app.Application:
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# Determine if it is debug mode
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if 'DEBUG' in os.environ and os.environ['DEBUG'] in ['true', '1']:
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constants.debug_mode = True
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ap = app.Application()
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ap.event_loop = loop
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# Execute startup stage
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for stage_name in stage_order:
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stage_cls = stage.preregistered_stages[stage_name]
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stage_inst = stage_cls()
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await stage_inst.run(ap)
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await ap.initialize()
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return ap
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async def main(loop: asyncio.AbstractEventLoop):
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app_inst: app.Application | None = None
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runtime_loop = asyncio.get_running_loop()
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shutdown_requested = asyncio.Event()
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run_task: asyncio.Task | None = None
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try:
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import signal
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def signal_handler(sig, frame):
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print('[Signal] Program exit.')
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runtime_loop.call_soon_threadsafe(shutdown_requested.set)
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signal.signal(signal.SIGINT, signal_handler)
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if hasattr(signal, 'SIGTERM'):
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signal.signal(signal.SIGTERM, signal_handler)
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app_inst = await make_app(loop)
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if app_inst is None:
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return
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run_task = asyncio.create_task(app_inst.run())
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shutdown_task = asyncio.create_task(shutdown_requested.wait())
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done, pending = await asyncio.wait((run_task, shutdown_task), return_when=asyncio.FIRST_COMPLETED)
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if shutdown_task in done:
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await app_inst.shutdown()
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if not run_task.done():
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run_task.cancel()
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for task in pending:
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task.cancel()
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results = await asyncio.gather(run_task, shutdown_task, return_exceptions=True)
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run_result = results[0]
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if isinstance(run_result, BaseException) and not isinstance(run_result, asyncio.CancelledError):
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raise run_result
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except Exception:
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traceback.print_exc()
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finally:
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if app_inst is not None:
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await app_inst.shutdown()
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