56 lines
1.8 KiB
Python
56 lines
1.8 KiB
Python
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"""구조화 JSON 로깅.
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LOG_FORMAT 환경변수로 json | text 선택 가능.
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"""
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from __future__ import annotations
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import json
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import logging
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import traceback
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from datetime import datetime, timezone
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_BUILTIN_ATTRS = {
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"args", "created", "exc_info", "exc_text", "filename", "funcName",
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"levelname", "levelno", "lineno", "module", "msecs", "message", "msg",
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"name", "pathname", "process", "processName", "relativeCreated",
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"stack_info", "thread", "threadName", "taskName",
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}
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class JsonFormatter(logging.Formatter):
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def format(self, record: logging.LogRecord) -> str:
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log_data = {
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"timestamp": datetime.fromtimestamp(record.created, tz=timezone.utc).isoformat(),
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"level": record.levelname,
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"logger": record.name,
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"message": record.getMessage(),
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}
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for key, value in record.__dict__.items():
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if key not in _BUILTIN_ATTRS and not key.startswith("_"):
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try:
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json.dumps(value)
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log_data[key] = value
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except (TypeError, ValueError):
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log_data[key] = str(value)
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if record.exc_info and record.exc_info[0] is not None:
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log_data["exception"] = "".join(traceback.format_exception(*record.exc_info))
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return json.dumps(log_data, ensure_ascii=False)
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def setup_logging(
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log_format: str = "json",
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level: int = logging.INFO,
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logger: logging.Logger | None = None,
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) -> None:
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target = logger or logging.getLogger()
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if log_format == "json":
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formatter = JsonFormatter()
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else:
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formatter = logging.Formatter(
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"%(asctime)s %(levelname)s %(name)s: %(message)s",
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datefmt="%Y-%m-%dT%H:%M:%S",
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)
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for handler in target.handlers:
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handler.setFormatter(formatter)
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target.setLevel(level)
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