565 lines
18 KiB
Go
565 lines
18 KiB
Go
package controller
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import (
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"context"
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"encoding/json"
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"fmt"
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"log"
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"net/http"
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"os"
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"sync"
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"time"
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"github.com/gin-gonic/gin"
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"github.com/go-redis/redis/v8"
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"github.com/gorilla/websocket"
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"xk-websocket/models" // 替换为实际路径
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"xk-websocket/utils" // 导入新的utils包
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)
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var upgrader = websocket.Upgrader{
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ReadBufferSize: 1024,
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WriteBufferSize: 1024,
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CheckOrigin: func(r *http.Request) bool {
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return true
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},
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}
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// WebSocketController WebSocket控制器结构体
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type WebSocketController struct {
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Clients map[string]*websocket.Conn
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ClientsMux sync.RWMutex
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RedisCli *redis.Client
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NodeID string
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Port string
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RedisCtx context.Context
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Logger *log.Logger
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}
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func NewWebSocketController() *WebSocketController {
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return &WebSocketController{
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Clients: make(map[string]*websocket.Conn),
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RedisCtx: context.Background(),
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}
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}
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// ConfigureSystem 配置系统参数
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func (c *WebSocketController) ConfigureSystem() {
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c.NodeID = utils.GetEnv("NODE_ID", "local")
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c.Port = utils.GetEnv("PORT", "12080")
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log.SetPrefix(fmt.Sprintf("[Node:%s] ", c.NodeID))
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log.SetFlags(log.LstdFlags | log.Lmicroseconds)
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c.configureLogger()
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}
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// 配置日志记录器
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func (c *WebSocketController) configureLogger() {
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logDir := utils.GetEnv("LOG_DIR", "./logs")
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if err := os.MkdirAll(logDir, 0755); err != nil {
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log.Fatalf("❌❌ 创建日志目录失败: %v", err)
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}
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logFreq := utils.GetEnv("LOG_ROTATE_FREQ", "daily")
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if c.Logger == nil {
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c.Logger = log.New(os.Stdout, "", log.LstdFlags|log.Lmicroseconds)
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}
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c.Logger.SetPrefix(fmt.Sprintf("[Node:%s] ", c.NodeID))
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log.SetOutput(c.getLogWriter(logDir, logFreq))
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}
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// 获取日志文件写入器
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func (c *WebSocketController) getLogWriter(logDir, freq string) *utils.DailyFileWriter {
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return utils.NewDailyFileWriter(logDir, freq, c.Logger, c.NodeID)
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}
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// InitRedisClient 初始化Redis客户端
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func (c *WebSocketController) InitRedisClient() {
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redisAddr := utils.GetEnv("REDIS_ADDR", "localhost:6379")
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redisPassword := utils.GetEnv("REDIS_PASSWORD", "")
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c.RedisCli = redis.NewClient(&redis.Options{
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Addr: redisAddr,
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Password: redisPassword,
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DB: 0,
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})
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if err := c.checkRedisConnection(); err != nil {
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log.Fatalf("❌❌ Redis连接失败: %v", err)
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}
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}
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// 检查Redis连接
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func (c *WebSocketController) checkRedisConnection() error {
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_, err := c.RedisCli.Ping(c.RedisCtx).Result()
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return err
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}
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// PrintStartupInfo 打印启动信息
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func (c *WebSocketController) PrintStartupInfo() {
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hostname, _ := os.Hostname()
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log.Printf("🚀🚀 WebSocket服务启动: NodeID=%s", c.NodeID)
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log.Printf("🌐🌐 监听端口: %s", c.Port)
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log.Printf("📡📡 Redis地址: %s", utils.GetEnv("REDIS_ADDR", "localhost:6379"))
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log.Printf("💻💻 主机: %s", hostname)
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log.Printf("🕒🕒🕒 启动时间: %s", time.Now().Format("2006-01-02 15:04:05"))
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log.Printf("🔔🔔 支持消息类型: \n 0:文本\n 1:图片\n 2:音频\n 3:视频\n 4:处方\n 5:病例\n 6:视频通话")
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log.Printf("🔑🔑 用户绑定键: \n %s\n %s", models.ClientUserKey, models.UserClientKey)
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log.Printf("📬📬 新增接口: POST /send-to-user (直接通过用户ID发送消息)")
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log.Println("🔗🔗 等待客户端连接...")
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}
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// HealthHandler 健康检查处理器
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func (c *WebSocketController) HealthHandler(ctx *gin.Context) {
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ctx.JSON(http.StatusOK, gin.H{
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"status": "ok",
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"node": c.NodeID,
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"time": time.Now().Format(time.RFC3339),
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})
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}
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// HandleWebSocket WebSocket连接处理器
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func (c *WebSocketController) HandleWebSocket(ctx *gin.Context) {
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start := time.Now()
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clientIP := ctx.ClientIP()
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log.Printf("👤👤 客户端连接中: IP=%s", clientIP)
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conn, err := upgrader.Upgrade(ctx.Writer, ctx.Request, nil)
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if err != nil {
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log.Printf("⚠️ WebSocket升级失败: %v | ClientIP=%s", err, clientIP)
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ctx.JSON(http.StatusBadRequest, gin.H{"error": "无法升级为WebSocket连接"})
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return
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}
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defer conn.Close()
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clientID := utils.GenerateClientID(c.NodeID)
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log.Printf("✅ 客户端已连接: \n ClientID=%s \n IP=%s \n Duration=%s",
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clientID, clientIP, time.Since(start))
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c.addClient(clientID, conn)
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defer c.removeClient(clientID)
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if err := conn.WriteJSON(gin.H{"clientId": clientID}); err != nil {
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log.Printf("⚠️ 发送客户端ID失败: %v | ClientID=%s", err, clientID)
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return
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}
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conn.SetPongHandler(func(string) error {
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conn.SetReadDeadline(time.Now().Add(60 * time.Second))
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return nil
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})
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for {
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messageType, message, err := conn.ReadMessage()
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if err != nil {
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if websocket.IsUnexpectedCloseError(err, websocket.CloseGoingAway) {
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log.Printf("❌❌ 连接意外断开: %v | ClientID=%s", err, clientID)
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} else {
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log.Printf("⚠️ 连接正常关闭: ClientID=%s", clientID)
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}
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break
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}
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if messageType == websocket.TextMessage {
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go c.handleClientMessage(clientID, message)
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}
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}
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}
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// 处理客户端消息
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func (c *WebSocketController) handleClientMessage(senderID string, message []byte) {
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log.Printf("📥📥 收到客户端消息: \n SenderID=%s \n Size=%d bytes", senderID, len(message))
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var payload models.SendMessagePayload
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if err := json.Unmarshal(message, &payload); err == nil && payload.RequestType != "" {
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log.Printf("📦📦 解析JSON消息成功: Type=%s", payload.RequestType)
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if payload.RequestType == "bind" && payload.SenderUserID != "" {
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log.Printf("🔗🔗 处理绑定请求: \n ClientID=%s \n UserID=%s", senderID, payload.SenderUserID)
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if err := c.bindClientToUser(senderID, payload.SenderUserID); err != nil {
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log.Printf("❌❌ 绑定失败: %v", err)
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} else {
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log.Printf("✅ 绑定成功: \n ClientID=%s \n UserID=%s", senderID, payload.SenderUserID)
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}
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return
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}
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if payload.RequestType == "send_message" {
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if payload.TargetClientID != "" {
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log.Printf("📨📨 处理客户端发起的发送请求: \n TargetID=%s \n MsgType=%d",
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payload.TargetClientID, payload.MessageType)
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clientMsg := models.ClientReceivedMessage{
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SenderID: senderID,
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ReceiverID: payload.TargetClientID,
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SenderUserID: payload.SenderUserID,
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ReceiverUserID: payload.ReceiverUserID,
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MessageType: payload.MessageType,
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Content: payload.MessageContent,
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SendTime: time.Now().Format(time.RFC3339),
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}
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c.sendMessageToClient(payload.TargetClientID, clientMsg)
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return
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}
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if payload.ReceiverUserID != "" {
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log.Printf("📨📨 处理客户端发起的用户发送请求: \n ReceiverUserID=%s \n MsgType=%d",
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payload.ReceiverUserID, payload.MessageType)
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clientMsg := models.ClientReceivedMessage{
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SenderID: senderID,
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ReceiverID: "",
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SenderUserID: payload.SenderUserID,
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ReceiverUserID: payload.ReceiverUserID,
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MessageType: payload.MessageType,
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Content: payload.MessageContent,
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SendTime: time.Now().Format(time.RFC3339),
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}
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c.sendMessageToUser(payload.ReceiverUserID, clientMsg)
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return
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}
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}
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}
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var clientMsg models.ClientReceivedMessage
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if err := json.Unmarshal(message, &clientMsg); err == nil && clientMsg.ReceiverID != "" {
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log.Printf("📨📨 处理客户端封装消息: \n TargetID=%s \n MsgType=%d",
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clientMsg.ReceiverID, clientMsg.MessageType)
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clientMsg.SenderID = senderID
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c.sendMessageToClient(clientMsg.ReceiverID, clientMsg)
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return
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}
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log.Printf("⚠️ 无法识别的消息格式: \n Size=%d bytes \n Message=%s", len(message), string(message))
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}
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// SendMessageHandler API消息发送处理器
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func (c *WebSocketController) SendMessageHandler(ctx *gin.Context) {
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start := time.Now()
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var payload models.SendMessagePayload
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if err := ctx.ShouldBindJSON(&payload); err != nil {
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log.Printf("⚠️ 无效的JSON请求格式: %v", err)
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ctx.JSON(http.StatusBadRequest, gin.H{"error": "无效的JSON格式"})
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return
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}
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if payload.RequestType == "" || (payload.TargetClientID == "" && payload.ReceiverUserID == "") ||
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payload.SenderUserID == "" || payload.ReceiverUserID == "" {
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log.Printf("⚠️ 缺少必要参数: \n request_type=%s \n target_client_id=%s \n receiver_user_id=%s \n sender_user_id=%s \n receiver_user_id=%s",
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payload.RequestType, payload.TargetClientID, payload.ReceiverUserID, payload.SenderUserID, payload.ReceiverUserID)
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ctx.JSON(http.StatusBadRequest, gin.H{"error": "缺少必要参数"})
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return
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}
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if payload.RequestType == "send_message" {
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log.Printf("📤📤 处理API发送请求: \n SenderUser=%s \n MsgType=%d",
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payload.SenderUserID, payload.MessageType)
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clientMsg := models.ClientReceivedMessage{
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SenderID: "system",
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ReceiverID: payload.TargetClientID,
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SenderUserID: payload.SenderUserID,
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ReceiverUserID: payload.ReceiverUserID,
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MessageType: payload.MessageType,
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Content: payload.MessageContent,
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SendTime: time.Now().Format(time.RFC3339),
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}
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var result string
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var sendErr error
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if payload.TargetClientID != "" {
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log.Printf("🎯🎯 目标类型: ClientID | Target=%s", payload.TargetClientID)
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sendErr = c.sendMessageToClient(payload.TargetClientID, clientMsg)
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result = fmt.Sprintf("消息已发送到ClientID: %s", payload.TargetClientID)
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} else if payload.ReceiverUserID != "" {
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log.Printf("🎯🎯 目标类型: UserID | ReceiverUser=%s", payload.ReceiverUserID)
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sendErr = c.sendMessageToUser(payload.ReceiverUserID, clientMsg)
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result = fmt.Sprintf("消息已发送到UserID: %s", payload.ReceiverUserID)
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} else {
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ctx.JSON(http.StatusBadRequest, gin.H{"error": "必须指定目标客户端ID或用户ID"})
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return
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}
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if sendErr != nil {
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ctx.JSON(http.StatusInternalServerError, gin.H{"error": sendErr.Error()})
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return
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}
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ctx.JSON(http.StatusOK, gin.H{"status": "success", "message": result})
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log.Printf("✅ API请求完成: Duration=%s", time.Since(start))
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return
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}
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ctx.JSON(http.StatusBadRequest, gin.H{"error": "不支持的request_type"})
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}
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// 用户绑定处理器
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func (c *WebSocketController) BindHandler(ctx *gin.Context) {
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start := time.Now()
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var req models.BindRequest
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if err := ctx.ShouldBindJSON(&req); err != nil {
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log.Printf("⚠️ 无效的绑定请求格式: %v", err)
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ctx.JSON(http.StatusBadRequest, gin.H{"error": "无效的JSON格式"})
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return
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}
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if req.UserID == "" || req.ClientID == "" {
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log.Printf("⚠️ 缺少必要参数: \n user_id=%s \n client_id=%s", req.UserID, req.ClientID)
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ctx.JSON(http.StatusBadRequest, gin.H{"error": "user_id和client_id不能为空"})
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return
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}
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log.Printf("🔗🔗 处理用户绑定请求: \n UserID=%s \n ClientID=%s", req.UserID, req.ClientID)
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if err := c.bindClientToUser(req.ClientID, req.UserID); err != nil {
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log.Printf("❌❌ 绑定失败: %v", err)
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ctx.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
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return
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}
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ctx.JSON(http.StatusOK, gin.H{
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"status": "success",
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"message": fmt.Sprintf("绑定成功: ClientID %s -> UserID %s", req.ClientID, req.UserID),
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})
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log.Printf("✅ 绑定请求完成: \n UserID=%s \n ClientID=%s \n Duration=%s",
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req.UserID, req.ClientID, time.Since(start))
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}
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// 通过用户ID发送消息处理器
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func (c *WebSocketController) SendToUserHandler(ctx *gin.Context) {
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start := time.Now()
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var payload models.SendToUserPayload
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if err := ctx.ShouldBindJSON(&payload); err != nil {
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log.Printf("⚠️ 无效的JSON请求格式: %v", err)
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ctx.JSON(http.StatusBadRequest, gin.H{"error": "无效的JSON格式"})
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return
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}
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if payload.ReceiverUserID == "" || payload.SenderUserID == "" {
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log.Printf("⚠️ 缺少必要参数: \n receiver_user_id=%s \n sender_user_id=%s",
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payload.ReceiverUserID, payload.SenderUserID)
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ctx.JSON(http.StatusBadRequest, gin.H{"error": "缺少接收方或发送方用户ID"})
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return
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}
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log.Printf("📤📤 处理API用户发送请求: \n SenderUser=%s → ReceiverUser=%s \n MsgType=%d",
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payload.SenderUserID, payload.ReceiverUserID, payload.MessageType)
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clientMsg := models.ClientReceivedMessage{
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SenderID: "system",
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ReceiverID: "",
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SenderUserID: payload.SenderUserID,
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ReceiverUserID: payload.ReceiverUserID,
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MessageType: payload.MessageType,
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Content: payload.MessageContent,
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SendTime: time.Now().Format(time.RFC3339),
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}
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if err := c.sendMessageToUser(payload.ReceiverUserID, clientMsg); err != nil {
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ctx.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
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return
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}
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ctx.JSON(http.StatusOK, gin.H{
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"code": 0,
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"status": "success",
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"message": fmt.Sprintf("消息已发送至用户 %s", payload.ReceiverUserID),
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})
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log.Printf("✅ API请求完成: Duration=%s", time.Since(start))
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}
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// 绑定客户端与用户
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func (c *WebSocketController) bindClientToUser(clientID, userID string) error {
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if err := c.RedisCli.HSet(c.RedisCtx, models.ClientUserKey, clientID, userID).Err(); err != nil {
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return fmt.Errorf("保存client-user映射失败: %w", err)
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}
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userClientKey := fmt.Sprintf("%s:%s", models.UserClientKey, userID)
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if err := c.RedisCli.SAdd(c.RedisCtx, userClientKey, clientID).Err(); err != nil {
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return fmt.Errorf("保存user-client映射失败: %w", err)
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}
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expiration := 24 * time.Hour
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if err := c.RedisCli.Expire(c.RedisCtx, userClientKey, expiration).Err(); err != nil {
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log.Printf("⚠️ 设置过期时间失败: %v", err)
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}
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log.Printf("🔗🔗 用户绑定成功: \n ClientID=%s → UserID=%s", clientID, userID)
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return nil
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}
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// 通过用户ID发送消息
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func (c *WebSocketController) sendMessageToUser(userID string, msg models.ClientReceivedMessage) error {
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start := time.Now()
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log.Printf("👤👤 通过用户ID发送消息: UserID=%s", userID)
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userClientKey := fmt.Sprintf("%s:%s", models.UserClientKey, userID)
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clientIDs, err := c.RedisCli.SMembers(c.RedisCtx, userClientKey).Result()
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if err != nil {
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return fmt.Errorf("获取用户clientID失败: %w", err)
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}
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if len(clientIDs) == 0 {
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return fmt.Errorf("用户未绑定任何客户端")
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}
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log.Printf("📡📡 找到 %d 个关联的客户端: UserID=%s", len(clientIDs), userID)
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var successCount, failCount int
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var lastError error
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for _, clientID := range clientIDs {
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targetMsg := msg
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targetMsg.ReceiverID = clientID
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if err := c.sendMessageToClient(clientID, targetMsg); err != nil {
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log.Printf("❌❌ 发送消息到客户端失败: \n ClientID=%s \n %v", clientID, err)
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failCount++
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lastError = err
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} else {
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successCount++
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}
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}
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log.Printf("📬📬 消息发送完成: \n 成功 %d \n 失败 %d \n UserID=%s \n Duration=%s",
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successCount, failCount, userID, time.Since(start))
|
||
|
||
if failCount > 0 {
|
||
return fmt.Errorf("部分消息发送失败，最后错误: %w", lastError)
|
||
}
|
||
return nil
|
||
}
|
||
|
||
// 发送消息给客户端
|
||
func (c *WebSocketController) sendMessageToClient(clientID string, msg models.ClientReceivedMessage) error {
|
||
start := time.Now()
|
||
|
||
msgJSON, err := json.Marshal(msg)
|
||
if err != nil {
|
||
log.Printf("❌❌ 消息序列化失败: %v", err)
|
||
return fmt.Errorf("内部错误")
|
||
}
|
||
|
||
if conn := c.getClient(clientID); conn != nil {
|
||
log.Printf("📤📤 向本地客户端发送消息: \n ClientID=%s \n MsgType=%d \n Size=%d bytes",
|
||
clientID, msg.MessageType, len(msgJSON))
|
||
|
||
if err := conn.WriteMessage(websocket.TextMessage, msgJSON); err != nil {
|
||
log.Printf("❌❌ 发送消息失败: %v | ClientID=%s", err, clientID)
|
||
c.removeClient(clientID)
|
||
return fmt.Errorf("发送消息失败")
|
||
}
|
||
|
||
log.Printf("✅ 消息成功发送到本地客户端: \n ClientID=%s \n Duration=%s",
|
||
clientID, time.Since(start))
|
||
return nil
|
||
}
|
||
|
||
log.Printf("🌐🌐 向远程节点转发消息: ClientID=%s", clientID)
|
||
|
||
redisMsg := models.RedisMessage{
|
||
SenderNodeID: c.NodeID,
|
||
ClientID: clientID,
|
||
Message: string(msgJSON),
|
||
}
|
||
|
||
redisMsgJSON, err := json.Marshal(redisMsg)
|
||
if err != nil {
|
||
log.Printf("❌❌ Redis消息序列化失败: %v", err)
|
||
return fmt.Errorf("内部错误")
|
||
}
|
||
|
||
if err := c.RedisCli.Publish(c.RedisCtx, "ws_messages", redisMsgJSON).Err(); err != nil {
|
||
log.Printf("❌❌ 发布消息到Redis失败: %v", err)
|
||
return fmt.Errorf("无法转发消息")
|
||
}
|
||
|
||
log.Printf("📡📡 消息已转发到Redis: \n ClientID=%s \n Size=%d bytes \n Duration=%s",
|
||
clientID, len(redisMsgJSON), time.Since(start))
|
||
return nil
|
||
}
|
||
|
||
// SubscribeToRedis 订阅Redis消息
|
||
func (c *WebSocketController) SubscribeToRedis() {
|
||
pubsub := c.RedisCli.Subscribe(c.RedisCtx, "ws_messages")
|
||
defer pubsub.Close()
|
||
|
||
ch := pubsub.Channel()
|
||
log.Println("🔔🔔 开始监听Redis消息...")
|
||
|
||
for msg := range ch {
|
||
start := time.Now()
|
||
var redisMsg models.RedisMessage
|
||
|
||
if err := json.Unmarshal([]byte(msg.Payload), &redisMsg); err != nil {
|
||
log.Printf("❌❌ 解析Redis消息失败: %v", err)
|
||
continue
|
||
}
|
||
|
||
log.Printf("📥📥 收到Redis消息: \n Sender=%s \n ClientID=%s \n Size=%d bytes",
|
||
redisMsg.SenderNodeID, redisMsg.ClientID, len(msg.Payload))
|
||
|
||
if redisMsg.SenderNodeID == c.NodeID {
|
||
log.Println("ℹℹ️ 忽略本节点转发的消息")
|
||
continue
|
||
}
|
||
|
||
if conn := c.getClient(redisMsg.ClientID); conn != nil {
|
||
if err := conn.WriteMessage(websocket.TextMessage, []byte(redisMsg.Message)); err != nil {
|
||
log.Printf("❌❌ 处理Redis消息失败: %v | ClientID=%s", err, redisMsg.ClientID)
|
||
c.removeClient(redisMsg.ClientID)
|
||
continue
|
||
}
|
||
|
||
log.Printf("✅ Redis消息已处理: \n ClientID=%s \n Duration=%s",
|
||
redisMsg.ClientID, time.Since(start))
|
||
} else {
|
||
log.Printf("⚠️ 目标客户端不在本节点: ClientID=%s", redisMsg.ClientID)
|
||
}
|
||
}
|
||
}
|
||
|
||
// ========================== 辅助方法 ========================== //
|
||
|
||
// 添加客户端到映射
|
||
func (c *WebSocketController) addClient(clientID string, conn *websocket.Conn) {
|
||
c.ClientsMux.Lock()
|
||
defer c.ClientsMux.Unlock()
|
||
c.Clients[clientID] = conn
|
||
log.Printf("📌📌 添加客户端到连接池: \n ClientID=%s \n 当前连接数=%d",
|
||
clientID, len(c.Clients))
|
||
}
|
||
|
||
// 从映射中移除客户端
|
||
func (c *WebSocketController) removeClient(clientID string) {
|
||
c.ClientsMux.Lock()
|
||
defer c.ClientsMux.Unlock()
|
||
|
||
if _, exists := c.Clients[clientID]; !exists {
|
||
return
|
||
}
|
||
|
||
delete(c.Clients, clientID)
|
||
log.Printf("🗑🗑️ 从连接池移除客户端: \n ClientID=%s \n 当前连接数=%d",
|
||
clientID, len(c.Clients))
|
||
|
||
if err := c.RedisCli.HDel(c.RedisCtx, models.ClientUserKey, clientID).Err(); err != nil {
|
||
log.Printf("⚠️ 删除client_user_mapping失败: %v", err)
|
||
}
|
||
}
|
||
|
||
// 获取客户端连接
|
||
func (c *WebSocketController) getClient(clientID string) *websocket.Conn {
|
||
c.ClientsMux.RLock()
|
||
defer c.ClientsMux.RUnlock()
|
||
return c.Clients[clientID]
|
||
}
|