dify/api/app.py
2026-04-14 15:40:13 +08:00

63 lines
1.7 KiB
Python

from __future__ import annotations
import logging
import sys
from typing import TYPE_CHECKING, cast
if TYPE_CHECKING:
from celery import Celery
celery: Celery
HOST = "0.0.0.0"
PORT = 5001
logger = logging.getLogger(__name__)
def is_db_command() -> bool:
if len(sys.argv) > 1 and sys.argv[0].endswith("flask") and sys.argv[1] == "db":
return True
return False
def log_startup_banner(host: str, port: int) -> None:
debugger_attached = sys.gettrace() is not None
logger.info("Serving Dify API via gevent WebSocket server")
logger.info("Bound to http://%s:%s", host, port)
logger.info("Debugger attached: %s", "on" if debugger_attached else "off")
logger.info("Press CTRL+C to quit")
# create app
flask_app = None
socketio_app = None
if is_db_command():
from app_factory import create_migrations_app
app = create_migrations_app()
socketio_app = app
flask_app = app
else:
# Gunicorn and Celery handle monkey patching automatically in production by
# specifying the `gevent` worker class. Manual monkey patching is not required here.
#
# See `api/docker/entrypoint.sh` (lines 33 and 47) for details.
#
# For third-party library patching, refer to `gunicorn.conf.py` and `celery_entrypoint.py`.
from app_factory import create_app
socketio_app, flask_app = create_app()
app = flask_app
celery = cast("Celery", app.extensions["celery"])
if __name__ == "__main__":
from gevent import pywsgi
from geventwebsocket.handler import WebSocketHandler # type: ignore[reportMissingTypeStubs]
log_startup_banner(HOST, PORT)
server = pywsgi.WSGIServer((HOST, PORT), socketio_app, handler_class=WebSocketHandler)
server.serve_forever()