优化结构

app/system/internal/server/middleware/rate_limit.go

@@ -0,0 +1,45 @@
+package middleware
+
+import (
+	"kra/app/system/internal/service"
+	"net/http"
+	"strings"
+	"time"
+
+	"github.com/gin-gonic/gin"
+)
+
+func SecurityRateLimit(settings *service.SecurityService) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		path := strings.TrimSuffix(c.Request.URL.Path, "/")
+		if !strings.HasSuffix(path, "/base/login") && !strings.HasSuffix(path, "/base/captcha") {
+			c.Next()
+			return
+		}
+		config, err := settings.CurrentSecurity(c.Request.Context())
+		if err != nil || config == nil {
+			c.AbortWithStatusJSON(http.StatusServiceUnavailable, gin.H{"code": CodeError, "msg": "安全服务暂不可用"})
+			return
+		}
+		if !config.LimitEnable {
+			c.Next()
+			return
+		}
+		window := config.LimitWindow
+		if window < 1 {
+			window = 60
+		}
+		key := "KRA_SecLimit" + c.ClientIP() + c.FullPath()
+		count, cacheErr := settings.IncrementRateLimit(c.Request.Context(), key, time.Duration(window)*time.Second)
+		if cacheErr != nil {
+			c.AbortWithStatusJSON(http.StatusServiceUnavailable, gin.H{"code": CodeError, "msg": "安全服务暂不可用"})
+			return
+		}
+		if int(count) > config.LimitCount {
+			c.JSON(200, gin.H{"code": CodeError, "msg": "请求太过频繁，请稍后再试"})
+			c.Abort()
+			return
+		}
+		c.Next()
+	}
+}