429 lines
13 KiB
Go
429 lines
13 KiB
Go
package handler
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import (
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"context"
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"encoding/base64"
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"encoding/json"
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"fmt"
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"github.com/gin-gonic/gin"
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"github.com/google/uuid"
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"github.com/gorilla/websocket"
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"io"
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"net/http"
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"strconv"
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"time"
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"videoplayer/proto"
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"videoplayer/service"
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"videoplayer/worker"
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)
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type DeviceAddReq struct {
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DeviceName string `json:"device_name" form:"device_name"`
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DeviceIP string `json:"device_ip" form:"device_ip"`
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DeviceStatus string `json:"device_status" form:"device_status"`
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AuthID int `json:"auth_id" form:"auth_id"`
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DeviceInfo string `json:"device_info" form:"device_info"`
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DeviceType string `json:"device_type" form:"device_type"`
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DeviceLocation string `json:"device_location" form:"device_location"`
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}
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type DeviceUpdateReq struct {
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ID int `json:"id" form:"id"`
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DeviceName string `json:"device_name" form:"device_name" `
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DeviceIP string `json:"device_ip" form:"device_ip" `
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DeviceStatus string `json:"device_status" form:"device_status" `
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AuthID int `json:"auth_id" form:"auth_id" `
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DeviceInfo string `json:"device_info" form:"device_info" `
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DeviceType string `json:"device_type" form:"device_type" `
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DeviceLocation string `json:"device_location" form:"device_location" `
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}
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type DeviceStatus struct {
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IP string `json:"ip" form:"ip" `
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Status string `json:"status" form:"status" `
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ID int `json:"id" form:"id" `
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}
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type DeviceDelReq struct {
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ID int `json:"id" form:"id" `
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}
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type DeviceRestartReq struct {
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ID int `json:"id" form:"id" `
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Option string `json:"option" form:"option" `
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}
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func SetUpDeviceGroup(router *gin.Engine) {
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deviceGroup := router.Group("/device")
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deviceGroup.POST("/get_device_list", GetDeviceList)
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deviceGroup.POST("/restart", RestartDevice)
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deviceGroup.POST("/add_device", AddDevice)
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deviceGroup.POST("/set_device_status", SetDeviceStatus)
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deviceGroup.POST("/update_device", UpdateDevice)
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deviceGroup.POST("/delete_device", DeleteDevice)
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deviceGroup.GET("/get_real_time_image", GetRealTimeImage)
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deviceGroup.GET("/video_feed", VideoFeed)
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}
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func DeleteDevice(c *gin.Context) {
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id, _ := c.Get("id")
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//获取post参数
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var req DeviceDelReq
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if err := c.ShouldBind(&req); err == nil {
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if service.DeleteDevice(req.ID, int(id.(float64))) {
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c.JSON(200, gin.H{"code": proto.SuccessCode, "message": "success"})
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} else {
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c.JSON(200, gin.H{"code": proto.OperationFailed, "message": "failed"})
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}
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} else {
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c.JSON(200, gin.H{"code": proto.ParameterError, "message": "failed"})
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}
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}
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func UpdateDevice(c *gin.Context) {
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var req DeviceUpdateReq
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user_id, _ := c.Get("id")
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if err := c.ShouldBind(&req); err == nil {
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res := service.UpdateDevice(req.DeviceName, req.DeviceIP, req.DeviceStatus, req.DeviceInfo, req.DeviceType, req.DeviceLocation, req.ID, int(user_id.(float64)))
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if res {
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c.JSON(200, gin.H{
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"code": 0,
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"message": "success",
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})
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} else {
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c.JSON(200, gin.H{
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"code": proto.DeviceUpdateFailed,
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"message": "failed",
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})
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}
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} else {
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c.JSON(200, gin.H{
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"code": proto.ParameterError,
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"message": "failed",
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})
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}
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}
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func SetDeviceStatus(c *gin.Context) {
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var req DeviceStatus
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id, _ := c.Get("id")
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if err := c.ShouldBind(&req); err == nil {
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if req.IP != "" {
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if service.SetDeviceStatus(req.Status, req.ID, int(id.(float64))) {
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c.JSON(200, gin.H{"code": proto.SuccessCode, "message": "success"})
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} else {
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c.JSON(200, gin.H{"code": 1, "message": "failed"})
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}
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}
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} else {
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c.JSON(200, gin.H{"code": proto.ParameterError, "message": "failed", "data": err.Error()})
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}
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}
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func AddDevice(c *gin.Context) {
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var req DeviceAddReq
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id, _ := c.Get("id")
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if err := c.ShouldBind(&req); err == nil {
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user_id := int(id.(float64))
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fmt.Println(req)
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device_id := service.AddDevice(req.DeviceName, req.DeviceIP, req.DeviceStatus, req.DeviceInfo, req.DeviceType, req.DeviceLocation, user_id)
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if device_id != 0 {
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c.JSON(200, gin.H{
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"code": proto.SuccessCode,
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"message": "success",
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"data": device_id,
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})
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} else {
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c.JSON(200, gin.H{
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"code": proto.DeviceAddFailed,
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"message": "failed",
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"data": "device add failed",
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})
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}
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} else {
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c.JSON(200, gin.H{
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"code": proto.ParameterError,
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"message": "failed",
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"data": err.Error(),
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})
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}
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}
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func GetDeviceList(c *gin.Context) {
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id, _ := c.Get("id")
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devices := service.GetDeviceList(int(id.(float64)))
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c.JSON(200, gin.H{
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"code": proto.SuccessCode,
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"message": "success",
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"data": devices,
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})
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}
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func RestartDevice(c *gin.Context) {
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user_id, _ := c.Get("id")
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var req DeviceRestartReq
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if err := c.ShouldBind(&req); err != nil {
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c.JSON(200, gin.H{"code": proto.ParameterError, "message": "failed", "data": err.Error()})
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return
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}
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device_id := req.ID
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if req.Option == "one" {
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device := service.GetDevice(device_id, int(user_id.(float64)))
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if device.ID != 0 {
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if device.DeviceIP != "" {
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if Restart(device.DeviceIP) {
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c.JSON(200, gin.H{"code": proto.SuccessCode, "message": "success"})
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} else {
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c.JSON(200, gin.H{"code": proto.DeviceRestartFailed, "message": "failed"})
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}
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}
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} else {
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c.JSON(200, gin.H{"code": proto.DataNotFound, "message": "failed", "data": string(device_id) + ": device not found"})
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}
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} else if req.Option == "all" {
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devices := service.GetDeviceList(int(user_id.(float64)))
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if len(devices) > 0 {
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for _, device := range devices {
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if device.DeviceIP != "" {
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if !Restart(device.DeviceIP) {
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c.JSON(200, gin.H{"code": proto.DeviceRestartFailed, "message": "failed"})
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return
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}
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}
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}
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} else {
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c.JSON(200, gin.H{"code": proto.DataNotFound, "message": "failed", "data": "device not found"})
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}
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c.JSON(200, gin.H{"code": proto.SuccessCode, "message": "success"})
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}
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}
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func Restart(ip string) bool {
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url := "http://" + ip + "/restart"
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resp, err := http.Get(url)
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if err != nil {
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return false
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}
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defer resp.Body.Close()
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if resp.StatusCode == 200 {
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return true
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}
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return false
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}
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// 发送实时视频流
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func GetRealTimeImage(c *gin.Context) {
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id, _ := c.Get("id")
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id1 := int(id.(float64))
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device_id := c.Query("device_id")
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device_id_int, _ := strconv.Atoi(device_id)
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device := service.GetDevice(device_id_int, id1)
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if device.ID == 0 {
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c.JSON(http.StatusOK, gin.H{"code": proto.DataNotFound, "message": "device not found"})
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return
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}
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ws, err := upgrader.Upgrade(c.Writer, c.Request, nil)
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clients[ws] = true
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if err != nil {
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fmt.Println("connect wss err:", err)
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return
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}
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worker.SetRedisWithExpire(strconv.Itoa(int(device.ID))+"_is_play", "1", time.Minute*5)
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fmt.Println("device_id:", device_id_int, " has set is_play to 1")
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go subscribeAndHandleMessages(ws, device_id_int)
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}
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func subscribeAndHandleMessages(ws *websocket.Conn, device_id int) {
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ctx := context.Background()
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pubsub := worker.RedisClient.Subscribe(ctx, strconv.Itoa(device_id)+"_frames_msgs")
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// 生成唯一连接 uuid
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con_id := uuid.New().String()
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online_conn_key := "device_" + strconv.Itoa(device_id) + "_online_conn_ids"
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// 加入设备在线连接集合
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worker.SetRedisSetAddWithExpire(online_conn_key, con_id, time.Minute*5)
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defer pubsub.Close()
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defer ws.Close()
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ch := pubsub.Channel()
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var check_cnt int
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var ticker *time.Ticker
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for {
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select {
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case msg, _ := <-ch:
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var res3 []byte
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var msgObj proto.Message
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if msg.Payload != "" {
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msgObj.Type = "img"
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msgObj.Msg = msg.Payload
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msgObj.From_user_id = -1
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res3, _ = json.Marshal(msgObj)
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} else {
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if check_cnt < 5 {
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check_cnt++
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time.Sleep(time.Millisecond * 200)
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continue
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}
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check_cnt = 0
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msgObj.Type = "check"
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msgObj.Msg = "check"
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msgObj.From_user_id = -1
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res3, _ = json.Marshal(msgObj)
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}
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// fmt.Println("send message to client length:", len(res3))
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err2 := ws.WriteMessage(websocket.TextMessage, res3)
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if err2 != nil {
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clientsMux.Lock()
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clients[ws] = false
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clientsMux.Unlock()
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fmt.Println("send message to client err:", err2)
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worker.SetRedisSetRemove(online_conn_key, con_id)
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goto end
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}
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default:
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if ticker == nil {
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ticker = time.NewTicker(time.Second)
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}
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select {
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case <-ticker.C:
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err := ws.WriteControl(websocket.PingMessage, []byte{}, time.Now().Add(time.Second))
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if err != nil {
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fmt.Println("Connection check failed:", err)
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worker.SetRedisSetRemove(online_conn_key, con_id)
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goto end
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}
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default:
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continue
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}
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}
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}
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end:
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// 查看是否还有其他连接，没有则设置 is_play 为 0
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if worker.IsContainKey(online_conn_key) == false {
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worker.SetRedisWithExpire(strconv.Itoa(device_id)+"_is_play", "0", time.Minute*5)
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fmt.Println("device_id:", device_id, " has set is_play to 0")
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}
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}
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// VideoFeed 函数用于处理视频流的获取与返回，支持根据前端连接情况控制发送
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func VideoFeed(c *gin.Context) {
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// 更严谨地获取并转换 id 参数，处理可能的错误
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id, ok := c.Get("id")
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if !ok {
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c.JSON(http.StatusInternalServerError, gin.H{"code": proto.DataNotFound, "message": "id not found in context"})
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return
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}
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floatId, ok := id.(float64)
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if !ok {
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c.JSON(http.StatusInternalServerError, gin.H{"code": proto.DataFormatError, "message": "invalid id type in context"})
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return
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}
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user_id := int(floatId)
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device_id := c.Query("device_id")
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device_id_int, err := strconv.Atoi(device_id)
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if err != nil {
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c.JSON(http.StatusBadRequest, gin.H{"code": proto.DataFormatError, "message": "invalid device_id format"})
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return
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}
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c.Header("Content-Type", "multipart/x-mixed-replace; boundary=frame") // 设置响应头
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device := service.GetDevice(device_id_int, user_id)
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if device.ID == 0 {
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c.JSON(http.StatusOK, gin.H{"code": proto.DataNotFound, "message": "device not found"})
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return
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}
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// 在 Redis 中设置设备正在播放状态及过期时间，处理设置失败的情况
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isSuccess := worker.SetRedisWithExpire(strconv.Itoa(int(device.ID))+"_is_play", "1", time.Minute*5)
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if isSuccess == false {
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fmt.Println("set redis is_play error:", err)
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c.JSON(http.StatusInternalServerError, gin.H{"code": proto.OperationFailed, "message": "failed to set device play status in Redis"})
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return
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}
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fmt.Println("device_id:", device_id_int, " has set is_play to 1")
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ctx := context.Background()
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pubSub := worker.RedisClient.Subscribe(ctx, strconv.Itoa(device_id_int)+"_frames_msgs")
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defer func() {
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err = pubSub.Close()
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if err != nil {
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fmt.Println("close pubSub error:", err)
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}
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}()
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// 生成唯一连接 uuid
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//conId := uuid.New().String()
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//onlineConnKey := "device_" + strconv.Itoa(device_id_int) + "_online_conn_ids"
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//// 加入设备在线连接集合，处理添加失败的情况
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//worker.SetRedisSetAdd(onlineConnKey, conId)
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// 创建一个通道用于接收客户端连接关闭的信号
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clientClosed := make(chan struct{})
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defer close(clientClosed)
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c.Stream(func(w io.Writer) bool {
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// 将读取 Redis 消息通道的逻辑放在这里，方便根据返回值控制循环
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ch := pubSub.Channel()
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for {
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select {
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case msg, ok := <-ch:
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if !ok {
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// 如果 Redis 通道关闭，进行相应处理并返回 false 停止发送
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fmt.Println("Redis channel closed unexpectedly")
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c.JSON(http.StatusInternalServerError, gin.H{"code": proto.RedisSetError, "message": "Redis channel closed"})
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return false
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}
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// 将 base64 图片数据解析为图片
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frame := msg.Payload
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buf, err := base64.StdEncoding.DecodeString(frame)
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if err != nil {
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fmt.Println("base64 decode error:", err)
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continue
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}
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// 按照视频流格式要求构造并返回响应数据
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_, err = w.Write([]byte("--frame\r\n"))
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if err != nil {
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fmt.Println("write video frame error:", err)
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return false
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}
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_, err = w.Write([]byte("Content-Type: image/jpeg\r\n\r\n"))
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if err != nil {
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fmt.Println("write video frame error:", err)
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return false
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}
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_, err = w.Write(buf)
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if err != nil {
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fmt.Println("write video frame error:", err)
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return false
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}
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_, err = w.Write([]byte("\r\n"))
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if err != nil {
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fmt.Println("write video frame error:", err)
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return false
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}
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case <-clientClosed:
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// 当接收到客户端关闭连接的信号，返回 false 停止发送视频流
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return false
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}
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}
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})
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// 启动一个协程来监测客户端连接是否关闭，关闭时向 clientClosed 通道发送信号
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go func() {
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<-c.Request.Context().Done()
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//如果clientClosed通道已经关闭，不再发送
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if _, ok := <-clientClosed; !ok {
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return
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} else {
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clientClosed <- struct{}{}
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}
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}()
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// 查看是否还有其他连接，没有则设置 is_play 为 0
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//if worker.IsContainKey(onlineConnKey) == false {
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// worker.SetRedisWithExpire(strconv.Itoa(device_id_int)+"_is_play", "0", time.Minute*5)
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// fmt.Println("device_id:", device_id, " has set is_play to 0")
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//}
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}
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