国标GB28181协议国标视频平台国标流媒体服务器EasyGBS向上级联多个平台设备及通道选择错位问题解析

在EasyGBS的平台级联功能测试中，我们发现一个问题，就是当EasyGBS向多个上级平台级联的时候，会出现选择前后一个平台的通道，影响到前一个平台的设备选择的情况。

经过排查分析，发现是在级联选择通道的时候，没有指定级联信息的id。

else if opt == "del" {
        for i, v := range ids {
            ids := strings.Split(v, ",")
            if len(ids) != 2 {
                break
            }
            if i == 0 {
                sql = fmt.Sprintf(`(channel_id = '%s' and device_id = '%s' )`, ids[0], ids[1])
            } else {
                sql = fmt.Sprintf(` %s or (channel_id = '%s' and device_id = '%s')`, sql, ids[0], ids[1])
            }
        }
        if len(ids) > 0 {
            if err := db.SQLite.Delete(models.CascadeChannel{}, sql).Error; err != nil {
                c.AbortWithStatusJSON(400, err.Error())
                return
            }
        }
  
    }

需要添加以下代码

for i, v := range ids {
            ids := strings.Split(v, ",")
            if len(ids) != 2 {
                break
            }
            if i == 0 {
                sql = fmt.Sprintf(`(channel_id = '%s' and device_id = '%s' and cascade_id = '%d')`, ids[0], ids[1], cascade_id)
            } else {
                sql = fmt.Sprintf(` %s or (channel_id = '%s' and device_id = '%s' and cascade_id = '%d')`, sql, ids[0], ids[1], cascade_id)
            }
        }
        if len(ids) > 0 {
            if err := db.SQLite.Delete(models.CascadeChannel{}, sql).Error; err != nil {
                c.AbortWithStatusJSON(400, err.Error())
                return
            }
        }