What is the reason why the channel list is empty on the intelligent security video platform easycvr?

EasyCVR The platform is based on the cloud edge end integration architecture , Support the unified aggregation and management of distributed video resources , Realize the processing and distribution of video resources 、 live broadcast 、 videotape 、 Look back 、 Storage 、 Intelligent analysis, etc . Recently, we are working on EasyCVR Expand new functions , For example, server clusters 、 Video rounds 、H.265 transcoding H.264、 Electronic map and track tracking, etc , Welcome to pay attention to our update .

EasyCVR The front-end access equipment can be centrally managed , It can also support the use of device trees to group devices 、 Hierarchical management 、 Equipment condition monitoring 、 Cloud operation and maintenance, etc , Realize centralized control and permission allocation of massive access resources .

There is on-site feedback from users ,EasyCVR When use , The channel list is empty , I don't know why , Ask us for assistance in troubleshooting .

Technicians immediately checked and analyzed the situation . It turns out that although the data passed in from the back end is paged , But no channel data is passed , Therefore, the channel list is empty .

Refer to the following code for optimization , Query the equipment data in the general table , Then query the device data of the sub table , If the sub table device does not exist , Clear the main table data , Finally, the result is returned to the front end .

func (h *APIHandler) ClearOldData(c *gin.Context) {

	cvrservice.GetDeviceService().ClearOldData()

	ack := NewMsgAck()

	ack.EasyDarwin.Header.MessageType = MSG_SC_SERVER_ADD_FAVORITES_ACK

	c.IndentedJSON(200, ack)

}

Refer to the above code optimization , Query the device data again , At this time, the list data has been displayed normally .

As a video fusion cloud service platform ,EasyCVR It is the most comprehensive video platform we support , It can support mainstream protocols, including national standards GB/T28181、RTMP、RTSP/Onvif agreement , And the private agreement of the manufacturer , Like Haikang Ehome、 The sea, SDK、 Dahua SDK etc. , Multi format video streams can be distributed externally , Include RTSP、FLV、HLS、WebRTC etc. , Realize full terminal 、 Full platform coverage .

Flexible platform video capability 、 Strong expansion 、 Deployment is light , It is widely used in offline scenes , The construction site includes wisdom 、 Smart factory 、 Smart campus 、 Smart community and so on , Interested users can go to the demonstration platform for experience or deployment testing .