Initial commit

app/core/logging.py

@@ -0,0 +1,58 @@
+"""Structured logging with structlog."""
+
+from __future__ import annotations
+
+import logging
+import sys
+
+import structlog
+
+from app.core.config import get_settings
+
+
+def setup_logging() -> None:
+    settings = get_settings()
+
+    log_level = logging.DEBUG if settings.DEBUG else logging.INFO
+
+    structlog.configure(
+        processors=[
+            structlog.contextvars.merge_contextvars,
+            structlog.stdlib.filter_by_level,
+            structlog.stdlib.add_logger_name,
+            structlog.stdlib.add_log_level,
+            structlog.stdlib.PositionalArgumentsFormatter(),
+            structlog.processors.TimeStamper(fmt="iso"),
+            structlog.processors.StackInfoRenderer(),
+            structlog.processors.format_exc_info,
+            structlog.processors.UnicodeDecoder(),
+            structlog.stdlib.ProcessorFormatter.wrap_for_formatter,
+        ],
+        logger_factory=structlog.stdlib.LoggerFactory(),
+        wrapper_class=structlog.stdlib.BoundLogger,
+        cache_logger_on_first_use=True,
+    )
+
+    formatter = structlog.stdlib.ProcessorFormatter(
+        processor=(
+            structlog.dev.ConsoleRenderer()
+            if settings.DEBUG
+            else structlog.processors.JSONRenderer()
+        ),
+    )
+
+    handler = logging.StreamHandler(sys.stdout)
+    handler.setFormatter(formatter)
+
+    root = logging.getLogger()
+    root.handlers.clear()
+    root.addHandler(handler)
+    root.setLevel(log_level)
+
+    # Silence noisy libs
+    for name in ("httpx", "httpcore", "uvicorn.access"):
+        logging.getLogger(name).setLevel(logging.WARNING)
+
+
+def get_logger(name: str = __name__) -> structlog.stdlib.BoundLogger:
+    return structlog.get_logger(name)