Sub2API v1.0 - AI API 网关（二开初始版本，基于上游 Wei-Shaw/sub2api）

backend/internal/server/middleware/logger.go

@@ -0,0 +1,88 @@
+package middleware
+
+import (
+	"time"
+
+	"github.com/Wei-Shaw/sub2api/internal/pkg/ctxkey"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/ip"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/logger"
+	"github.com/gin-gonic/gin"
+	"go.uber.org/zap"
+)
+
+// Logger 请求日志中间件
+func Logger() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		// 开始时间
+		startTime := time.Now()
+
+		// 请求路径
+		path := c.Request.URL.Path
+
+		// 处理请求
+		c.Next()
+
+		// 跳过健康检查等高频探针路径的日志
+		if path == "/health" || path == "/setup/status" {
+			return
+		}
+
+		endTime := time.Now()
+		latency := endTime.Sub(startTime)
+
+		method := c.Request.Method
+		statusCode := c.Writer.Status()
+		clientIP := ip.GetClientIP(c)
+		protocol := c.Request.Proto
+		accountID, hasAccountID := c.Request.Context().Value(ctxkey.AccountID).(int64)
+		platform, _ := c.Request.Context().Value(ctxkey.Platform).(string)
+		model, _ := c.Request.Context().Value(ctxkey.Model).(string)
+		reason, rejected := GetIngressRejectReason(c)
+		if rejected {
+			recordIngressReject(c, reason)
+			allowed, droppedSummary := globalIngressRejectAccessSampler.allow(endTime)
+			if droppedSummary > 0 {
+				logger.FromContext(c.Request.Context()).Info("ingress rejection access logs dropped",
+					zap.String("component", "http.access"),
+					zap.Uint64("dropped_count", droppedSummary),
+					zap.Bool(logger.OpsSystemLogSkipField, true),
+				)
+			}
+			if !allowed {
+				return
+			}
+		}
+
+		fields := []zap.Field{
+			zap.String("component", "http.access"),
+			zap.Int("status_code", statusCode),
+			zap.Int64("latency_ms", latency.Milliseconds()),
+			zap.String("client_ip", clientIP),
+			zap.String("protocol", protocol),
+			zap.String("method", method),
+			zap.String("path", path),
+		}
+		if rejected {
+			fields = append(fields,
+				zap.String("ingress_reject_reason", string(reason)),
+				zap.Bool(logger.OpsSystemLogSkipField, true),
+			)
+		}
+		if hasAccountID && accountID > 0 {
+			fields = append(fields, zap.Int64("account_id", accountID))
+		}
+		if platform != "" {
+			fields = append(fields, zap.String("platform", platform))
+		}
+		if model != "" {
+			fields = append(fields, zap.String("model", model))
+		}
+
+		l := logger.FromContext(c.Request.Context()).With(fields...)
+		l.Info("http request completed", zap.Time("completed_at", endTime))
+
+		if len(c.Errors) > 0 {
+			l.Warn("http request contains gin errors", zap.String("errors", c.Errors.String()))
+		}
+	}
+}