first commit

internal/service/order_expire.go

@@ -0,0 +1,46 @@
+package service
+
+import (
+	"context"
+	"log/slog"
+	"time"
+
+	"git.lzcwy.cn/zhengchiliu/zt-closet-backend/global"
+	"git.lzcwy.cn/zhengchiliu/zt-closet-backend/internal/mysqldao"
+)
+
+// StartOrderExpireScheduler 启动订单超时过期定时任务：每分钟将超时未支付订单批量置为已过期。
+func StartOrderExpireScheduler() {
+	go func() {
+		slog.Info("order expire scheduler started")
+		for {
+			func() {
+				defer func() {
+					if r := recover(); r != nil {
+						slog.Error("order expire scheduler panic", "recover", r)
+					}
+				}()
+				runOrderExpire()
+			}()
+			time.Sleep(time.Minute)
+		}
+	}()
+}
+
+// runOrderExpire 扫描并过期超时待支付订单。条件更新天然幂等，多实例并发无害，无需分布式锁。
+func runOrderExpire() {
+	ctx, cancel := context.WithTimeout(context.Background(), time.Minute)
+	defer cancel()
+
+	ctx, span := global.Tracer.Start(ctx, "scheduler.OrderExpire")
+	defer span.End()
+
+	affected, err := mysqldao.NewOrderDao().OrderExpireByTime(ctx, nowUnix())
+	if err != nil {
+		slog.ErrorContext(ctx, "expire orders failed", "error", err)
+		return
+	}
+	if affected > 0 {
+		slog.InfoContext(ctx, "expired pending orders", "count", affected)
+	}
+}