第一步

backend/app/core/logging.py

@@ -0,0 +1,31 @@
+"""结构化日志配置。"""
+
+import logging
+import sys
+
+_CONFIGURED = False
+
+
+def setup_logging(level: int = logging.INFO) -> None:
+    global _CONFIGURED
+    if _CONFIGURED:
+        return
+    handler = logging.StreamHandler(sys.stdout)
+    handler.setFormatter(
+        logging.Formatter(
+            fmt="%(asctime)s | %(levelname)-7s | %(name)s | %(message)s",
+            datefmt="%Y-%m-%d %H:%M:%S",
+        )
+    )
+    root = logging.getLogger()
+    root.setLevel(level)
+    root.handlers = [handler]
+
+    for noisy in ("uvicorn.access", "asyncio"):
+        logging.getLogger(noisy).setLevel(logging.WARNING)
+
+    _CONFIGURED = True
+
+
+def get_logger(name: str) -> logging.Logger:
+    return logging.getLogger(name)