first test

backend/middleware/performance.go

@@ -0,0 +1,58 @@
+package middleware
+
+import (
+	"fmt"
+	"log"
+	"time"
+
+	"github.com/gin-gonic/gin"
+)
+
+// PerformanceMiddleware adds performance monitoring to requests
+func PerformanceMiddleware() gin.HandlerFunc {
+	return gin.LoggerWithFormatter(func(param gin.LogFormatterParams) string {
+		// Custom log format with performance metrics
+		return fmt.Sprintf(
+			"[%s] %s %s %d %s %s \"%s\" %s\n",
+			param.TimeStamp.Format("02/Jan/2006:15:04:05 -0700"),
+			param.Method,
+			param.Path,
+			param.StatusCode,
+			param.Latency,
+			param.Request.UserAgent(),
+			param.ErrorMessage,
+			param.Request.Header.Get("X-Request-ID"),
+		)
+	})
+}
+
+// RequestIDMiddleware adds a unique request ID to each request
+func RequestIDMiddleware() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		requestID := c.GetHeader("X-Request-ID")
+		if requestID == "" {
+			requestID = generateRequestID()
+		}
+		c.Set("RequestID", requestID)
+		c.Header("X-Request-ID", requestID)
+		c.Next()
+	}
+}
+
+// generateRequestID generates a unique request ID
+func generateRequestID() string {
+	return fmt.Sprintf("%d", time.Now().UnixNano())
+}
+
+// SlowQueryMiddleware logs slow database queries
+func SlowQueryMiddleware(threshold time.Duration) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		start := time.Now()
+		c.Next()
+		duration := time.Since(start)
+
+		if duration > threshold {
+			log.Printf("SLOW REQUEST: %s %s took %v", c.Request.Method, c.Request.URL.Path, duration)
+		}
+	}
+}