sample代码里的context传递正确的吗

[musereborn]

// TransactionMiddleware filter gin invocation
// NOTE: when use gin，must set gin.ContextWithFallback true when gin version >= 1.8.1
func TransactionMiddleware() gin.HandlerFunc {
return func(ctx *gin.Context) {
xid := ctx.GetHeader(constant.XidKey)
if xid == "" {
xid = ctx.GetHeader(constant.XidKeyLowercase)
}

	if len(xid) == 0 {
		log.Errorf("Gin: header not contain header: %s, global transaction xid", constant.XidKey)
		ctx.AbortWithStatus(http.StatusBadRequest)
		return
	}

	newCtx := ctx.Request.Context()
	newCtx = tm.InitSeataContext(newCtx)
	tm.SetXID(newCtx, xid)
	ctx.Request = ctx.Request.WithContext(newCtx)

	log.Infof("global transaction xid is :%s", xid)
}

}

gin的中间件根据传递的xid新建context并且放到ctx.Request的上下文中
但是在示例代码中
func updateDataSuccessHandler(c *gin.Context) {
log.Infof("get tm updateData")
if err := updateDataSuccess(c); err != nil {
c.JSON(http.StatusBadRequest, "updateData failure")
return
}
c.JSON(http.StatusOK, "updateData ok")
}
传递的都是gin.Context, 不是应该传递c.Request.Context给处理函数呢，发现最后传给db驱动的也是gin.Context，为啥是这样呢