package cache
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import (
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"basic.com/dbapi.git"
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"basic.com/pubsub/cache.git/shardmap"
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"basic.com/pubsub/protomsg.git"
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"basic.com/valib/gopherdiscovery.git"
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"fmt"
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"github.com/gogo/protobuf/proto"
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"github.com/satori/go.uuid"
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"strconv"
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)
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const (
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PREFIX_POLYGON = "POLYGON_"
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PREFIX_TIME = "TIME_"
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PREFIX_RULE = "RULE_"
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)
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var cMap *shardmap.ShardMap
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func Init(initChan chan bool,dbIp string,surveyPort int,pubSubPort int){
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cMap = shardmap.New(uint8(32))
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urlSurvey := "tcp://" + dbIp + ":" + strconv.Itoa(surveyPort)
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urlPubSub := "tcp://" + dbIp + ":" + strconv.Itoa(pubSubPort)
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client, _ := gopherdiscovery.ClientWithSub(urlSurvey, urlPubSub, uuid.NewV4().String())
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recvMsg := client.HeartBeatMsg()
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fmt.Println(<-recvMsg)
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initCacheData(initChan)
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peers, _ := client.Peers()
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for b := range peers{
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fmt.Println("peerMsg:",b)
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updateData(b)
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}
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}
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func initCacheData(initChan chan bool) {
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initPolygons()//初始化摄像机多边形缓存
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initTimeRules()//初始化时间规则缓存
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initCameraTaskRules()//初始化摄像机任务规则缓存
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initChan <- true
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}
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var newUpdateMsg = &protomsg.DbChangeMessage{}
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func updateData(b []byte){
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if err :=proto.Unmarshal(b,newUpdateMsg);err !=nil{
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fmt.Println("dbChangeMsg unmarshal err:",err)
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return
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}
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switch newUpdateMsg.Table {
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case protomsg.TableChanged_T_CameraPolygon://更新摄像机多变形
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initPolygons()
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case protomsg.TableChanged_T_TimeRule://更新时间规则
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initTimeRules()
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case protomsg.TableChanged_T_CameraTaskArgs://更新摄像机规则配置参数
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initCameraTaskRules()
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default:
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fmt.Println("unknown operation")
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}
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}
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func initPolygons(){
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var api dbapi.CameraApi
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data := api.FindAllPolygons()
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for _, item := range data {
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if item.Type != "line" {
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cameraId :=item.CameraId
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arr, b := cMap.Get(PREFIX_POLYGON + cameraId)
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if b {
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list := arr.([]protomsg.CameraPolygon)
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list = append(list,item)
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cMap.Set(PREFIX_POLYGON + cameraId,list)
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} else {
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cMap.Set(PREFIX_POLYGON + cameraId,[]protomsg.CameraPolygon{ item })
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}
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}
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}
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}
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func initTimeRules(){
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var api dbapi.CameraApi
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flag, rules := api.FindAllTimeRules()
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if flag {
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for _, rule := range rules {
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cMap.Set(PREFIX_TIME+rule.Id, rule)
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}
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}
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}
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func initCameraTaskRules(){
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var api dbapi.CameraTaskArgsApi
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all := api.FindAll()
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for _, taskArg := range all {
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cMap.Set(PREFIX_RULE+taskArg.CameraId,taskArg.TaskArgs)
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}
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}
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func GetPolygonsByCameraId(cameraId string) []protomsg.CameraPolygon{
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obj, b := cMap.Get(PREFIX_POLYGON + cameraId)
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if b {
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return obj.([]protomsg.CameraPolygon)
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} else {
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return nil
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}
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}
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//从缓存中获取时间规则
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func GetTimeRuleById(id string) (exist bool,rule protomsg.CameraTimerule){
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obj, b := cMap.Get(PREFIX_TIME + id)
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if b {
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return true,obj.(protomsg.CameraTimerule)
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} else {
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return false,rule
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}
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}
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//根据摄像机id从缓存中获取摄像机的任务规则设置
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func GetCameraTaskRulesByCameraId(cameraId string) []*protomsg.TaskGroupArgs {
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obj, b := cMap.Get(PREFIX_RULE + cameraId)
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if b {
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return obj.([]*protomsg.TaskGroupArgs)
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} else {
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return nil
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}
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}
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