d5e4285346
Asyncio requires a closure of the event loop while sync can use SystemExit to kill the program. Signed-off-by: kingbri <bdashore3@proton.me>
56 lines
1.4 KiB
Python
56 lines
1.4 KiB
Python
import asyncio
|
|
import signal
|
|
import sys
|
|
from loguru import logger
|
|
from types import FrameType
|
|
|
|
from common import model
|
|
|
|
|
|
SHUTTING_DOWN: bool = False
|
|
|
|
|
|
def signal_handler(*_):
|
|
"""Signal handler for main function. Run before uvicorn starts."""
|
|
|
|
global SHUTTING_DOWN
|
|
|
|
if SHUTTING_DOWN:
|
|
return
|
|
|
|
logger.warning("Shutdown signal called. Exiting gracefully.")
|
|
SHUTTING_DOWN = True
|
|
|
|
# Run async unloads for model
|
|
# If an event loop doesn't exist (synchronous), exit.
|
|
try:
|
|
loop = asyncio.get_running_loop()
|
|
loop.run_until_complete(signal_handler_async())
|
|
except RuntimeError:
|
|
sys.exit(0)
|
|
|
|
|
|
async def signal_handler_async():
|
|
"""
|
|
Internal signal handler. Runs all async code to shut down the program.
|
|
|
|
asyncio.run will cancel all remaining tasks and close the event loop.
|
|
"""
|
|
|
|
if model.container:
|
|
await model.unload_model(skip_wait=True, shutdown=True)
|
|
|
|
if model.embeddings_container:
|
|
await model.unload_embedding_model()
|
|
|
|
|
|
def uvicorn_signal_handler(signal_event: signal.Signals):
|
|
"""Overrides uvicorn's signal handler."""
|
|
|
|
default_signal_handler = signal.getsignal(signal_event)
|
|
|
|
def wrapped_handler(signum: int, frame: FrameType = None):
|
|
logger.warning("Shutdown signal called. Exiting gracefully.")
|
|
default_signal_handler(signum, frame)
|
|
|
|
signal.signal(signal_event, wrapped_handler)
|