The reload_delay setting is invalid when using WatchFiles?

[shoucandanghehe]

This is my demo code👇

code

import sys
import logging
import uvicorn
from fastapi import FastAPI


app = FastAPI()


logging.basicConfig(
    level=logging.INFO,
    format='%(asctime)s - %(name)s - %(levelname)s - %(message)s',
    stream=sys.stdout,
)

logger = logging.getLogger('uvicorn')

LOG_CONFIG = {
    'version': 1,
    'handlers': {
        'console': {
            'class': 'logging.StreamHandler',
            'formatter': 'generic',
        }
    },
    'formatters': {
        'generic': {
            'format': '%(asctime)s [%(process)d] [%(levelname)s] %(message)s',
            'datefmt': '[%Y-%m-%d %H:%M:%S]',
            'class': 'logging.Formatter',
        }
    },
    'loggers': {
        'uvicorn': {
            'handlers': ['console'],
            'level': 'INFO',
            'propagate': False,
        },
    }
}


@app.get('/')
def read_root():
    return {'Hello': 'World'}


if __name__ == '__main__':
    uvicorn.run(
        '__main__:app',
        host='0.0.0.0',
        port=8000,
        reload=True,
        reload_delay=120.0,
        log_config=LOG_CONFIG
    )

If I understand correctly, uvicorn should reload after 120s of file changes, but actually uvicorn seems to start reloading right away. (I can't tell if it's immediately or the default 0.25s)

Here are some logs👇

logs

[2023-01-05 05:03:08] [24864] [INFO] Will watch for changes in these directories: ['D:\\code\\test']
[2023-01-05 05:03:08] [24864] [INFO] Uvicorn running on http://0.0.0.0:8000 (Press CTRL+C to quit)
[2023-01-05 05:03:08] [24864] [INFO] Started reloader process [24864] using WatchFiles
[2023-01-05 05:03:09] [11648] [INFO] Started server process [11648]
[2023-01-05 05:03:09] [11648] [INFO] Waiting for application startup.
[2023-01-05 05:03:09] [11648] [INFO] Application startup complete.
[2023-01-05 05:03:19] [24864] [WARNING] WatchFiles detected changes in 'reload_test.py'. Reloading...
[2023-01-05 05:03:19] [34588] [INFO] Started server process [34588]
[2023-01-05 05:03:19] [34588] [INFO] Waiting for application startup.
[2023-01-05 05:03:19] [34588] [INFO] Application startup complete.

[Kludex]

Created #1832 from this discussion.

I need to investigate.