package service
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"io/ioutil"
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"net"
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"strings"
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"gat1400Exchange/config"
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"gat1400Exchange/models"
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"gat1400Exchange/pkg/logger"
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"golang.org/x/text/encoding/simplifiedchinese"
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"golang.org/x/text/transform"
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)
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type ElevatorStatus struct {
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TotalFloors int `json:"TotalFloors"`
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Floor int `json:"Floor"`
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FloorName string `json:"FloorName"`
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RunDir int `json:"RunDir"`
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Speed string `json:"Speed"`
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}
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type Elevator struct {
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Name string `json:"Name"`
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IP string `json:"IP"`
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Status ElevatorStatus `json:"Status"`
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Alarm []interface{} `json:"Alarm"` // You might want to define a specific type for alarms
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}
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type ElevatorData struct {
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Elevator []Elevator `json:"Elevator"`
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}
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// 对接网络视频字符叠加器,接收udp发送的楼层信息, 更新device地址
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func NVCSServer() {
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// 指定监听的端口
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port := config.ServeConf.Port
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// 创建一个UDP地址
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address, err := net.ResolveUDPAddr("udp", fmt.Sprintf(":%s", port))
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if err != nil {
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logger.Error("Error resolving address:", err)
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return
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}
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// 创建一个UDP连接
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conn, err := net.ListenUDP("udp", address)
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if err != nil {
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logger.Error("Error listening:", err)
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return
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}
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defer conn.Close()
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logger.Info("UDP server listening on port %s...", port)
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// 无限循环等待接收数据
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for {
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// 创建一个缓冲区来存储接收的数据
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buffer := make([]byte, 256)
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// 从连接中读取数据
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numBytes, clientAddr, err := conn.ReadFromUDP(buffer)
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if err != nil {
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logger.Warn("Error reading from UDP connection:%s", err.Error())
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continue
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}
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// 设备上传的中文数据为GBK编码, 转换为utf8
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decoder := simplifiedchinese.GBK.NewDecoder()
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reader := transform.NewReader(bytes.NewReader(buffer[:numBytes]), decoder)
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decodedBytes, err := ioutil.ReadAll(reader)
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var data ElevatorData
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// Unmarshal JSON into the struct
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err = json.Unmarshal(decodedBytes, &data)
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if err != nil {
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logger.Warn("ElevatorData unmarshal error:%s", err.Error())
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continue
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}
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if len(data.Elevator) == 0 {
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continue
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}
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if data.Elevator[0].Status.RunDir > 0 {
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continue
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}
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elevator := data.Elevator[0]
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elevator.Name = strings.Trim(elevator.Name, " ")
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if elevator.Name == "" {
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continue
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}
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var d = models.Device{
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Id: elevator.Name,
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Floor: elevator.Status.FloorName,
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Ip: elevator.IP,
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}
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err = d.Upsert()
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if err != nil {
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logger.Warn("Device db update error:%s", err.Error())
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}
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deviceAliveCache.Add(elevator.Name, true)
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logger.Debug("Received %d bytes from %s, %+v", numBytes, clientAddr, data)
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}
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}
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