307 lines
7.3 KiB
Go
307 lines
7.3 KiB
Go
package main
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import (
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"bufio"
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"encoding/hex"
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"fmt"
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"io"
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"log"
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"net"
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"os"
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"path/filepath"
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"strings"
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"sync"
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"time"
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"unicode/utf8"
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"weatherstation/config"
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"weatherstation/model"
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)
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type UTF8Writer struct {
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w io.Writer
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}
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func NewUTF8Writer(w io.Writer) *UTF8Writer {
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return &UTF8Writer{w: w}
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}
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func (w *UTF8Writer) Write(p []byte) (n int, err error) {
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if utf8.Valid(p) {
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return w.w.Write(p)
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}
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s := string(p)
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s = strings.ToValidUTF8(s, "")
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return w.w.Write([]byte(s))
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}
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var (
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logFile *os.File
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logFileMutex sync.Mutex
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currentLogDay int
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)
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func getLogFileName() string {
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currentTime := time.Now()
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return filepath.Join("log", fmt.Sprintf("%s.log", currentTime.Format("2006-01-02")))
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}
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func openLogFile() (*os.File, error) {
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logDir := "log"
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if _, err := os.Stat(logDir); os.IsNotExist(err) {
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os.MkdirAll(logDir, 0755)
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}
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logFileName := getLogFileName()
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return os.OpenFile(logFileName, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0644)
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}
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func setupLogger() {
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var err error
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logFile, err = openLogFile()
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if err != nil {
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log.Fatalf("无法创建日志文件: %v", err)
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}
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currentLogDay = time.Now().Day()
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bufferedWriter := bufio.NewWriter(logFile)
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utf8Writer := NewUTF8Writer(bufferedWriter)
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go func() {
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for {
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time.Sleep(1 * time.Second)
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logFileMutex.Lock()
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bufferedWriter.Flush()
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now := time.Now()
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if now.Day() != currentLogDay {
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oldLogFile := logFile
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logFile, err = openLogFile()
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if err != nil {
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log.Printf("无法创建新日志文件: %v", err)
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} else {
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oldLogFile.Close()
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currentLogDay = now.Day()
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bufferedWriter = bufio.NewWriter(logFile)
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utf8Writer = NewUTF8Writer(bufferedWriter)
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log.SetOutput(io.MultiWriter(os.Stdout, utf8Writer))
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log.Println("日志文件已轮转")
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}
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}
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logFileMutex.Unlock()
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}
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}()
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multiWriter := io.MultiWriter(os.Stdout, utf8Writer)
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log.SetOutput(multiWriter)
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log.SetFlags(log.Ldate | log.Ltime | log.Lshortfile)
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}
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func startUDP() {
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cfg := config.GetConfig()
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err := model.InitDB()
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if err != nil {
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log.Fatalf("初始化数据库失败: %v", err)
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}
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defer model.CloseDB()
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addr := fmt.Sprintf(":%d", cfg.Server.UDPPort)
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conn, err := net.ListenPacket("udp", addr)
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if err != nil {
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log.Fatalf("无法监听UDP端口 %d: %v", cfg.Server.UDPPort, err)
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}
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defer conn.Close()
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log.Printf("UDP服务器已启动，监听端口 %d...", cfg.Server.UDPPort)
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buffer := make([]byte, 2048)
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for {
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n, addr, err := conn.ReadFrom(buffer)
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if err != nil {
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log.Printf("读取数据错误: %v", err)
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continue
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}
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rawData := buffer[:n]
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log.Printf("从 %s 接收到 %d 字节数据", addr.String(), n)
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hexDump := hexDump(rawData)
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log.Printf("原始码流(十六进制):\n%s", hexDump)
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asciiDump := asciiDump(rawData)
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log.Printf("ASCII码:\n%s", asciiDump)
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// 检查数据是否为RS485格式
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if len(rawData) == 25 && rawData[0] == 0x24 {
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// 解析RS485数据
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hexStr := strings.ReplaceAll(hexDump, "\n", " ")
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parseHexData(hexStr)
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// 注册设备
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protocol := model.NewProtocol(rawData)
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idParts, err := protocol.GetCompleteID()
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if err == nil {
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stationID := fmt.Sprintf("RS485-%s", idParts.Complete.Hex)
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model.RegisterDevice(stationID, addr)
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log.Printf("设备 %s 已注册，IP: %s", stationID, addr.String())
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}
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} else {
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// 尝试解析WIFI数据
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data, deviceType, err := model.ParseData(rawData)
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if err != nil {
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log.Printf("解析数据失败: %v", err)
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continue
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}
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log.Println("成功解析气象站数据:")
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log.Printf("设备类型: %s", getDeviceTypeString(deviceType))
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log.Println(data)
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if deviceType == model.DeviceTypeWIFI {
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if wifiData, ok := data.(*model.WeatherData); ok {
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stationID := wifiData.StationID
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if stationID != "" {
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model.RegisterDevice(stationID, addr)
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log.Printf("设备 %s 已注册，IP: %s", stationID, addr.String())
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} else {
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log.Printf("警告: 收到的数据没有站点ID")
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}
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}
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}
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}
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// 暂时不保存到数据库
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// err = model.SaveWeatherData(data, string(rawData))
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// if err != nil {
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// log.Printf("保存数据到数据库失败: %v", err)
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// } else {
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// log.Printf("数据已成功保存到数据库")
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// }
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}
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}
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func getDeviceTypeString(deviceType model.DeviceType) string {
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switch deviceType {
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case model.DeviceTypeWIFI:
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return "WIFI"
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case model.DeviceTypeRS485:
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return "RS485"
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default:
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return "未知"
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}
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}
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func main() {
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// 检查是否有命令行参数
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if len(os.Args) > 1 && os.Args[1] == "parse" {
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if len(os.Args) > 2 {
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// 解析指定的十六进制数据
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hexData := os.Args[2]
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parseHexData(hexData)
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} else {
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fmt.Println("用法: ./weatherstation parse <十六进制数据>")
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fmt.Println("示例: ./weatherstation parse \"24 F2 10 02 C7 48 10 03 00 6A 03 E8 05 F5 96 10 3F 01 83 2D B1 00 29 9B A4\"")
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}
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} else {
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// 正常启动服务器
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setupLogger()
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startUDP()
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}
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}
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func hexDump(data []byte) string {
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var result strings.Builder
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for i := 0; i < len(data); i += 16 {
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end := i + 16
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if end > len(data) {
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end = len(data)
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}
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chunk := data[i:end]
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hexStr := hex.EncodeToString(chunk)
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for j := 0; j < len(hexStr); j += 2 {
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if j+2 <= len(hexStr) {
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result.WriteString(strings.ToUpper(hexStr[j : j+2]))
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result.WriteString(" ")
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}
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}
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result.WriteString("\n")
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}
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return result.String()
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}
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func asciiDump(data []byte) string {
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var result strings.Builder
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for i := 0; i < len(data); i += 64 {
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end := i + 64
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if end > len(data) {
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end = len(data)
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}
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chunk := data[i:end]
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for _, b := range chunk {
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if b >= 32 && b <= 126 {
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result.WriteByte(b)
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} else {
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result.WriteString(".")
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}
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}
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result.WriteString("\n")
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}
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return result.String()
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}
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// parseHexData 解析十六进制字符串数据
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func parseHexData(hexStr string) {
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// 移除所有空格
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hexStr = strings.ReplaceAll(hexStr, " ", "")
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// 将十六进制字符串转换为字节数组
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data, err := hex.DecodeString(hexStr)
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if err != nil {
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log.Printf("解析十六进制字符串失败: %v", err)
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return
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}
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// 检查数据有效性
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if !model.ValidateRS485Data(data) {
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log.Printf("无效的RS485数据格式: 长度=%d, 起始字节=%02X", len(data), data[0])
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return
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}
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// 创建协议解析器
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protocol := model.NewProtocol(data)
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rs485Protocol := model.NewRS485Protocol(data)
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// 获取设备ID
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idParts, err := protocol.GetCompleteID()
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if err != nil {
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log.Printf("获取设备ID失败: %v", err)
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return
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}
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// 解析RS485数据
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rs485Data, err := rs485Protocol.ParseRS485Data()
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if err != nil {
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log.Printf("解析RS485数据失败: %v", err)
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return
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}
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// 添加设备ID和时间戳
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rs485Data.DeviceID = idParts.Complete.Hex
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rs485Data.ReceivedAt = time.Now()
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rs485Data.RawDataHex = fmt.Sprintf("%X", data)
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// 打印解析结果
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log.Println("=== RS485数据解析结果 ===")
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log.Printf("原始数据: %s", hexStr)
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log.Printf("设备ID: %s (HSB=%s, MSB=%s, LSB=%s)",
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idParts.Complete.Hex,
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idParts.HSB.Hex,
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idParts.MSB.Hex,
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idParts.LSB.Hex)
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log.Printf("温度: %.2f°C", rs485Data.Temperature)
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log.Printf("湿度: %.1f%%", rs485Data.Humidity)
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log.Printf("风向: %.1f°", rs485Data.WindDirection)
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log.Printf("风速: %.2f m/s", rs485Data.WindSpeed)
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log.Printf("降雨量: %.2f mm", rs485Data.Rainfall)
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log.Printf("光照: %.2f lux", rs485Data.Light)
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log.Printf("紫外线: %.2f", rs485Data.UV)
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log.Printf("气压: %.2f hPa", rs485Data.Pressure)
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}
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