package cache
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import (
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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/bhomeclient.git"
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"basic.com/valib/bhomedbapi.git"
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"basic.com/valib/c_bhomebus.git/proto/source/bhome_msg"
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"basic.com/valib/logger.git"
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"encoding/json"
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"errors"
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)
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var cMap *shardmap.ShardMap
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const (
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SERVER_KEY = "SERVERINFO" //服务器信息
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SCENERULES = "SCENERULES" //摄像机场景列表
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)
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func UpdateBySub(msg *bhome_msg.MsgPublish) {
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switch string(msg.Topic) {
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case bhomeclient.Proc_System_Service:
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initServerInfo()
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case bhomeclient.Proc_Scene_Service:
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var protoMsg protomsg.DbChangeMessage
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if err := json.Unmarshal(msg.Data, &protoMsg); err == nil {
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initCameraRules()
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}
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}
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}
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//缓存一些其他数据库的数据，并通过订阅消息实时更新
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func InitDataCache() {
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cMap = shardmap.New(uint8(32))
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initServerInfo() //初始化服务器配置信息
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initCameraRules()
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}
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func initServerInfo() {
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var api bhomedbapi.SysSetApi
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b, s := api.GetServerInfo()
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logger.Debug("GetServerInfo b:", b, "s:", s)
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if b && len(s.ServerId) != 0 {
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cMap.Set(SERVER_KEY, s)
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}
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}
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func GetServerInfo() (conf protomsg.LocalConfig, err error) {
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config, b := cMap.Get(SERVER_KEY)
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if b {
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return config.(protomsg.LocalConfig), nil
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} else {
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initServerInfo()
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nc, nb := cMap.Get(SERVER_KEY)
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if nb {
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return nc.(protomsg.LocalConfig), nil
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} else {
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return conf, errors.New("conf not found")
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}
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}
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}
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func initCameraRules() {
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var api bhomedbapi.CameraRuleApi
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b, allCamRules := api.FindAll()
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logger.Debug("initCameraRules b:", b, " len(allCamRules):", len(allCamRules))
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if b {
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cMap.Set(SCENERULES, allCamRules)
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}
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}
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func GetCameraRules() ([]protomsg.CameraAndRules, error) {
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allRules, b := cMap.Get(SCENERULES)
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if b {
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return allRules.([]protomsg.CameraAndRules), nil
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} else {
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initCameraRules()
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nr, nb := cMap.Get(SCENERULES)
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if nb {
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return nr.([]protomsg.CameraAndRules), nil
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} else {
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return nil, errors.New("no CameraAndRules cached")
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}
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}
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}
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