wavelet init

Wavelet/internal/apps/risk_control/middleware.go

@@ -0,0 +1,87 @@
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+// Package risk_control 提供风险控制中间件
+package risk_control
+
+import (
+	"encoding/json"
+	"net/http"
+	"time"
+
+	"github.com/Rain-kl/Wavelet/internal/apps/oauth"
+	"github.com/Rain-kl/Wavelet/internal/common/response"
+	"github.com/Rain-kl/Wavelet/internal/config"
+	"github.com/Rain-kl/Wavelet/internal/db/idgen"
+	"github.com/Rain-kl/Wavelet/internal/model"
+	"github.com/gin-gonic/gin"
+)
+
+// RiskControlMiddleware 全局日志采集中间件
+func RiskControlMiddleware() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		// 如果未启用 ClickHouse，直接放行
+		if !config.Config.ClickHouse.Enabled {
+			c.Next()
+			return
+		}
+
+		// 1. 限流背压检测（检测本地缓冲队列是否已满）
+		if IsBufferFull() {
+			response.AbortTooManyRequests(c, "系统繁忙，请稍后再试")
+			return
+		}
+
+		start := time.Now()
+
+		// 2. 执行后续请求（穿过业务处理和认证中间件）
+		c.Next()
+
+		// 3. 后置身份检查：仅记录通过认证的请求
+		userObj, exists := oauth.GetFromContext[*model.User](c, oauth.UserObjKey)
+		if !exists || userObj == nil {
+			return
+		}
+
+		// 4. 计算耗时并异步推送到缓冲队列
+		latency := time.Since(start).Milliseconds()
+
+		var headersStr string
+		if c.Request.Header != nil {
+			// 克隆 Header，避免污染原 HTTP 请求的 Header 对象
+			clonedHeaders := make(http.Header)
+			for k, v := range c.Request.Header {
+				clonedHeaders[k] = v
+			}
+			clonedHeaders.Del("Cookie")
+
+			if headersBytes, err := json.Marshal(clonedHeaders); err == nil {
+				headersStr = string(headersBytes)
+			}
+		}
+
+		const maxHTTPStatus = 999
+		status := c.Writer.Status()
+		if status < 0 {
+			status = 0
+		} else if status > maxHTTPStatus {
+			status = maxHTTPStatus
+		}
+
+		logItem := &UserAccessLog{
+			ID:        idgen.NextUint64ID(),
+			UserID:    userObj.ID, // 直接从 Context 获取已登录用户ID，避免数据库查询
+			Path:      c.Request.URL.Path,
+			Method:    c.Request.Method,
+			IP:        c.ClientIP(),
+			UserAgent: c.Request.UserAgent(),
+			Headers:   headersStr,
+			Status:    int32(status),
+			Latency:   latency,
+			CreatedAt: time.Now(),
+		}
+
+		// 非阻塞地推入缓存队列
+		QueueAccessLog(logItem)
+	}
+}