29 lines
930 B
Python
29 lines
930 B
Python
"""Logging utilities for WashData."""
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from __future__ import annotations
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import logging
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class DeviceLoggerAdapter(logging.LoggerAdapter):
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"""Logger adapter that prepends the device name to every log message.
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Usage::
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_LOGGER = logging.getLogger(__name__)
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class MyClass:
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def __init__(self, device_name: str) -> None:
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self._logger = DeviceLoggerAdapter(_LOGGER, device_name)
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def do_thing(self) -> None:
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self._logger.info("Something happened")
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# emits: "[My Device] Something happened"
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"""
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def __init__(self, logger: logging.Logger, device_name: str) -> None:
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super().__init__(logger, {"device_name": device_name})
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def process(self, msg: str, kwargs: dict) -> tuple[str, dict]:
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device = self.extra.get("device_name") or "unknown" # type: ignore[union-attr]
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return f"[{device}] {msg}", kwargs
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