29 lines
1.1 KiB
Python
29 lines
1.1 KiB
Python
 
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import logging
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from logging.handlers import RotatingFileHandler
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from pathlib import Path
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LOG_DIR = Path(__file__).resolve().parent.parent / "logs"
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LOG_FILE = LOG_DIR / "app.log"
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_FORMAT = "%(asctime)s %(levelname)s [%(name)s] %(message)s"
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def setup_logging() -> None:
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"""Route all app + uvicorn logging to logs/app.log so errors are traceable
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without depending on however the process happens to be launched."""
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LOG_DIR.mkdir(exist_ok=True)
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handler = RotatingFileHandler(LOG_FILE, maxBytes=10 * 1024 * 1024, backupCount=5)
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handler.setFormatter(logging.Formatter(_FORMAT))
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root = logging.getLogger()
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root.setLevel(logging.INFO)
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root.addHandler(handler)
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# "uvicorn.error"/"uvicorn.access" have propagate=False in uvicorn's default
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# logging config, so they never reach the root handler above and need their
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# own. The parent "uvicorn" logger is deliberately skipped: uvicorn.error
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# already bubbles into it, so attaching there too would double every line.
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for logger_name in ("uvicorn.error", "uvicorn.access"):
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logging.getLogger(logger_name).addHandler(handler)
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