35 lines
1.0 KiB
Python
35 lines
1.0 KiB
Python
|
"""JSON structured logging on stdout."""
|
||
|
|
|
||
|
|
from __future__ import annotations
|
||
|
|
|
||
|
|
import logging
|
||
|
|
import sys
|
||
|
|
|
||
|
|
from pythonjsonlogger import jsonlogger
|
||
|
|
|
||
|
|
|
||
|
|
def configure_logging(level: str = "INFO") -> None:
|
||
|
|
"""Replace the root handler with a single JSON stdout handler.
|
||
|
|
|
||
|
|
Fields emitted: ts, level, name, msg, plus any extras passed via `logger.X(..., extra={...})`.
|
||
|
|
"""
|
||
|
|
root = logging.getLogger()
|
||
|
|
root.setLevel(level.upper())
|
||
|
|
|
||
|
|
# Drop any pre-existing handlers (uvicorn/gunicorn add their own).
|
||
|
|
for h in list(root.handlers):
|
||
|
|
root.removeHandler(h)
|
||
|
|
|
||
|
|
handler = logging.StreamHandler(sys.stdout)
|
||
|
|
formatter = jsonlogger.JsonFormatter(
|
||
|
|
fmt="%(asctime)s %(levelname)s %(name)s %(message)s",
|
||
|
|
rename_fields={"asctime": "ts", "levelname": "level", "name": "logger"},
|
||
|
|
json_ensure_ascii=False,
|
||
|
|
)
|
||
|
|
handler.setFormatter(formatter)
|
||
|
|
root.addHandler(handler)
|
||
|
|
|
||
|
|
# Tame the noisy third parties unless explicitly debugging.
|
||
|
|
if level.upper() != "DEBUG":
|
||
|
|
logging.getLogger("werkzeug").setLevel(logging.WARNING)
|