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https://github.com/bunny-lab-io/Borealis.git
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72 lines
2.4 KiB
Python
72 lines
2.4 KiB
Python
"""Logging bootstrap helpers for the Borealis Engine."""
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from __future__ import annotations
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import logging
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from logging.handlers import TimedRotatingFileHandler
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from pathlib import Path
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from .environment import EngineSettings
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_ENGINE_LOGGER_NAME = "borealis.engine"
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_SERVICE_NAME = "engine"
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_DEFAULT_FORMAT = "%(asctime)s-" + _SERVICE_NAME + "-%(message)s"
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def _handler_already_attached(logger: logging.Logger, log_path: Path) -> bool:
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for handler in logger.handlers:
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if isinstance(handler, TimedRotatingFileHandler):
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handler_path = Path(getattr(handler, "baseFilename", ""))
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if handler_path == log_path:
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return True
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return False
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def _build_handler(log_path: Path) -> TimedRotatingFileHandler:
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handler = TimedRotatingFileHandler(
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log_path,
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when="midnight",
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backupCount=30,
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encoding="utf-8",
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)
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handler.setLevel(logging.INFO)
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handler.setFormatter(logging.Formatter(_DEFAULT_FORMAT))
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return handler
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def configure_logging(settings: EngineSettings) -> logging.Logger:
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"""Configure a rotating log handler for the Engine."""
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logs_root = settings.logs_root
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logs_root.mkdir(parents=True, exist_ok=True)
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log_path = logs_root / "engine.log"
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logger = logging.getLogger(_ENGINE_LOGGER_NAME)
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logger.setLevel(logging.INFO if not settings.debug else logging.DEBUG)
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if not _handler_already_attached(logger, log_path):
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handler = _build_handler(log_path)
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logger.addHandler(handler)
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logger.propagate = False
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# Also ensure the root logger follows suit so third-party modules inherit the handler.
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root_logger = logging.getLogger()
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if not _handler_already_attached(root_logger, log_path):
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handler = _build_handler(log_path)
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root_logger.addHandler(handler)
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if root_logger.level == logging.WARNING:
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# Default level is WARNING; lower it to INFO so our handler captures application messages.
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root_logger.setLevel(logging.INFO if not settings.debug else logging.DEBUG)
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# Quieten overly chatty frameworks unless debugging is explicitly requested.
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if not settings.debug:
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logging.getLogger("werkzeug").setLevel(logging.WARNING)
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logging.getLogger("engineio").setLevel(logging.WARNING)
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logging.getLogger("socketio").setLevel(logging.WARNING)
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return logger
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__all__ = ["configure_logging"]
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