initial

backend/app/logging_setup.py

@@ -0,0 +1,38 @@
+"""Structured logging setup."""
+from __future__ import annotations
+
+import logging
+import sys
+
+import structlog
+
+from app.config import settings
+
+
+def setup_logging() -> None:
+    level = getattr(logging, settings.log_level.upper(), logging.INFO)
+
+    logging.basicConfig(
+        format="%(message)s",
+        stream=sys.stdout,
+        level=level,
+    )
+
+    structlog.configure(
+        processors=[
+            structlog.contextvars.merge_contextvars,
+            structlog.processors.add_log_level,
+            structlog.processors.TimeStamper(fmt="iso"),
+            structlog.processors.StackInfoRenderer(),
+            structlog.processors.format_exc_info,
+            structlog.processors.JSONRenderer(),
+        ],
+        wrapper_class=structlog.make_filtering_bound_logger(level),
+        context_class=dict,
+        logger_factory=structlog.PrintLoggerFactory(file=sys.stdout),
+        cache_logger_on_first_use=True,
+    )
+
+
+def get_logger(name: str | None = None):
+    return structlog.get_logger(name)