Codex
40 lines
1.5 KiB
Python
40 lines
1.5 KiB
Python
import logging
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from logging.handlers import RotatingFileHandler
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from pathlib import Path
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def configure_logging(log_file: Path) -> None:
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"""Configure console and file logging once for local service runs."""
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log_file.parent.mkdir(parents=True, exist_ok=True)
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root_logger = logging.getLogger()
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root_logger.setLevel(logging.INFO)
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if not _has_handler("signalscout-console"):
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# Console logs are for the terminal window that runs `make run`.
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console_handler = logging.StreamHandler()
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console_handler.name = "signalscout-console"
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console_handler.setFormatter(_formatter())
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root_logger.addHandler(console_handler)
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if not _has_handler("signalscout-file"):
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# File logs persist agent failures after the terminal scrollback is gone.
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file_handler = RotatingFileHandler(
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log_file,
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maxBytes=2_000_000,
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backupCount=3,
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encoding="utf-8",
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)
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file_handler.name = "signalscout-file"
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file_handler.setFormatter(_formatter())
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root_logger.addHandler(file_handler)
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def _formatter() -> logging.Formatter:
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# Include module name so source, API, and runner failures are easy to separate.
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return logging.Formatter("%(asctime)s %(levelname)s [%(name)s] %(message)s")
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def _has_handler(name: str) -> bool:
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# Uvicorn imports the app during startup, so handlers must be idempotent.
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return any(handler.name == name for handler in logging.getLogger().handlers)
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