修复请求错误消息上报问题

web/middlewares.go

@@ -22,6 +22,9 @@ func ApplyMiddlewares(app *fiber.App) {
 		EnableStackTrace: true,
 	}))
 
+	// metric
+	app.Use(otelfiber.Middleware())
+
 	// logger
 	app.Use(logger.New(logger.Config{
 		Next: func(c *fiber.Ctx) bool {
@@ -29,8 +32,7 @@ func ApplyMiddlewares(app *fiber.App) {
 		},
 	}))
 
-	// metric
-	app.Use(otelfiber.Middleware())
+	// 补充 otel span attr
 	app.Use(func(c *fiber.Ctx) error {
 		err := c.Next()
 
@@ -39,16 +41,12 @@ func ApplyMiddlewares(app *fiber.App) {
 			return err
 		}
 
-		status := c.Response().StatusCode()
-		body := []byte{}
-		if status < 200 || status >= 300 {
-			body = c.Response().Body()
-			if len(body) > 1024 {
-				body = body[:1024]
-			}
+		str := ""
+		if err != nil {
+			str = err.Error()
 		}
 
-		span.SetAttributes(attribute.String("http.response.error", string(body)))
+		span.SetAttributes(attribute.String("http.response.error", str))
 		return err
 	})