feat: backend core - auth, user, role, permission, device, webhook, monitoring, cache, repository, service, middleware, API handlers

internal/monitoring/middleware.go

@@ -0,0 +1,27 @@
+package monitoring
+
+import (
+	"time"
+
+	"github.com/gin-gonic/gin"
+)
+
+// PrometheusMiddleware Prometheus监控中间件
+func PrometheusMiddleware(metrics *Metrics) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		start := time.Now()
+
+		c.Next()
+
+		duration := time.Since(start)
+		method := c.Request.Method
+		path := c.FullPath()
+		status := c.Writer.Status()
+
+		// 记录请求数
+		metrics.IncHTTPRequest(method, path, status)
+
+		// 记录请求耗时
+		metrics.ObserveHTTPRequestDuration(method, path, duration)
+	}
+}