feat:新增投顾agent和nl2sqlagent

utils/performance.py

@@ -0,0 +1,31 @@
+"""请求耗时观测中间件。"""
+from __future__ import annotations
+
+import logging
+import time
+
+from starlette.middleware.base import BaseHTTPMiddleware
+
+logger = logging.getLogger("api.performance")
+
+
+class PerformanceMiddleware(BaseHTTPMiddleware):
+    """记录接口耗时；日志只包含路径、状态码和耗时，不包含请求参数。"""
+
+    def __init__(self, app, *, slow_ms: float = 500.0):
+        super().__init__(app)
+        self.slow_ms = slow_ms
+
+    async def dispatch(self, request, call_next):
+        started = time.perf_counter()
+        response = await call_next(request)
+        elapsed_ms = (time.perf_counter() - started) * 1000
+        if elapsed_ms >= self.slow_ms:
+            logger.warning(
+                "slow request path=%s method=%s status=%s elapsed_ms=%.2f",
+                request.url.path,
+                request.method,
+                response.status_code,
+                elapsed_ms,
+            )
+        return response