678 lines
22 KiB
Plaintext
678 lines
22 KiB
Plaintext
package main
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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/google/uuid"
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"github.com/gorilla/websocket"
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)
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// WebSocket 升级器配置
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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 // 允许跨域
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},
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}
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// 统一消息结构（发送方使用）
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type SendMessagePayload struct {
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RequestType string `json:"request_type"` // 消息类型
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TargetClientID string `json:"target_client_id"` // 目标客户端ID
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SenderUserID string `json:"sender_user_id"` // 发送者用户ID
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ReceiverUserID string `json:"receiver_user_id"` // 接收者用户ID
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MessageType int `json:"message_type"` // 消息类型（0-6）
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MessageContent string `json:"message_content"` // 消息内容
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}
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// 通过用户ID发送消息的结构
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type SendToUserPayload struct {
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SenderUserID string `json:"sender_user_id"` // 发送者用户ID
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ReceiverUserID string `json:"receiver_user_id"` // 接收者用户ID
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MessageType int `json:"message_type"` // 消息类型（0-6）
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MessageContent string `json:"message_content"` // 消息内容
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}
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// 客户端接收消息结构（最终格式）
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type ClientReceivedMessage struct {
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SenderID string `json:"sender_id"` // 发送者连接ID
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ReceiverID string `json:"receiver_id"` // 接收者连接ID
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SenderUserID string `json:"sender_user_id"` // 发送者用户ID
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ReceiverUserID string `json:"receiver_user_id"` // 接收者用户ID
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MessageType int `json:"message_type"` // 消息类型（0-6）
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Content string `json:"content"` // 消息内容
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SendTime string `json:"send_time"` // 发送时间
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}
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// Redis 消息结构
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type RedisMessage struct {
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SenderNodeID string `json:"sender_node_id"` // 发送节点ID
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ClientID string `json:"client_id"` // 目标客户端ID
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Message string `json:"message"` // 消息内容
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}
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// 用户绑定请求结构
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type BindRequest struct {
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UserID string `json:"user_id"` // 用户ID
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ClientID string `json:"client_id"` // 客户端ID
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}
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// 全局变量
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var (
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clients = make(map[string]*websocket.Conn) // 客户端连接映射
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clientsMux sync.RWMutex // 连接映射的读写锁
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redisCtx = context.Background() // Redis 上下文
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nodeID string // 当前节点ID
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redisCli *redis.Client // Redis 客户端
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port string // 服务端口
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)
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// Redis键常量
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const (
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ClientUserKey = "client_user_mapping" // clientid -> userid映射
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UserClientKey = "user_client_mapping" // userid -> clientid列表
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)
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func main() {
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// 配置系统
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configureSystem()
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// 初始化Redis客户端
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initRedisClient()
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// 创建Gin路由器
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router := gin.Default()
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router.Use(gin.Recovery()) // 添加恢复中间件
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// 注册路由
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router.GET("/ws", handleWebSocket) // WebSocket连接端点
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router.POST("/send", sendMessageHandler) // 消息发送端点（通过客户端ID）
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router.POST("/bind", bindHandler) // 用户绑定端点
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router.POST("/send-to-user", sendToUserHandler) // 新增：通过用户ID发送消息
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router.GET("/health", healthHandler) // 健康检查端点
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// 输出启动信息
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printStartupInfo()
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// 启动Redis消息订阅
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go subscribeToRedis()
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// 启动HTTP服务
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runServer(router)
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}
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// 配置系统环境
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func configureSystem() {
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nodeID = getEnv("NODE_ID", "local") // 获取节点ID，默认"local"
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port = getEnv("PORT", "12080") // 获取端口，默认12080
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log.SetPrefix(fmt.Sprintf("[Node:%s] ", nodeID)) // 设置日志前缀
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log.SetFlags(log.LstdFlags | log.Lmicroseconds) // 设置日志格式
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}
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// 初始化Redis客户端
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func initRedisClient() {
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redisAddr := getEnv("REDIS_ADDR", "localhost:6379")
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redisPassword := getEnv("REDIS_PASSWORD", "") // Redis密码
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redisCli = redis.NewClient(&redis.Options{
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Addr: redisAddr, // Redis地址
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Password: redisPassword, // Redis密码
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DB: 0, // 默认DB
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})
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// 测试Redis连接
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if err := 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 checkRedisConnection() error {
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_, err := redisCli.Ping(redisCtx).Result()
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return err
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}
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// 输出启动信息
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func printStartupInfo() {
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hostname, _ := os.Hostname()
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log.Printf("🚀 WebSocket服务启动: NodeID=%s", nodeID)
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log.Printf("🌐 监听端口: %s", port)
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log.Printf("📡 Redis地址: %s", 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: 0:文本 1:图片 2:音频 3:视频 4:处方 5:病例 6:视频通话")
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log.Printf("🔑 用户绑定键: %s, %s", ClientUserKey, 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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// 启动服务
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func runServer(router *gin.Engine) {
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addr := "127.0.0.1:" + port
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log.Printf("🔌 服务地址: http://%s", addr)
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log.Printf("🔌 WebSocket连接地址: ws://%s/ws", addr)
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if err := router.Run(addr); err != nil {
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log.Fatalf("❌ 服务启动失败: %v", err)
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}
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}
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// 健康检查处理
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func healthHandler(c *gin.Context) {
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c.JSON(http.StatusOK, gin.H{
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"status": "ok",
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"node": nodeID,
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"time": time.Now().Format(time.RFC3339),
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})
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}
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// WebSocket处理函数
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func handleWebSocket(c *gin.Context) {
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start := time.Now()
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clientIP := c.ClientIP()
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log.Printf("👤 客户端连接中: IP=%s", clientIP)
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// 升级为WebSocket连接
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conn, err := upgrader.Upgrade(c.Writer, c.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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c.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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// 生成客户端ID
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clientID := generateClientID()
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log.Printf("✅ 客户端已连接: ClientID=%s | IP=%s | Duration=%s",
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clientID, clientIP, time.Since(start))
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// 将连接添加到客户端映射
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addClient(clientID, conn)
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defer removeClient(clientID)
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// 发送客户端ID
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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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// 设置心跳
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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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// 保持连接活跃
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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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// 只处理文本消息
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if messageType == websocket.TextMessage {
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go 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 handleClientMessage(senderID string, message []byte) {
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log.Printf("📥 收到客户端消息: SenderID=%s | Size=%d bytes", senderID, len(message))
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// 尝试解析为发送消息请求
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var payload 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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// 处理绑定请求
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if payload.RequestType == "bind" && payload.SenderUserID != "" {
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log.Printf("🔗 处理绑定请求: ClientID=%s -> UserID=%s", senderID, payload.SenderUserID)
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if err := 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: ClientID=%s -> UserID=%s", senderID, payload.SenderUserID)
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}
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return
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}
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// 处理发送消息请求
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if payload.RequestType == "send_message" {
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// 如果指定了目标clientid，则直接发送
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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: TargetID=%s | MsgType=%d",
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payload.TargetClientID, payload.MessageType)
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// 构建客户端消息结构
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clientMsg := 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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// 发送消息
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sendMessageToClient(payload.TargetClientID, clientMsg)
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return
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}
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// 如果指定了接收用户ID，则通过用户ID发送
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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: ReceiverUserID=%s | MsgType=%d",
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payload.ReceiverUserID, payload.MessageType)
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// 构建客户端消息结构
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clientMsg := ClientReceivedMessage{
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SenderID: senderID,
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ReceiverID: "", // 通过userID发送，留空
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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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// 通过用户ID发送消息
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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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// 尝试解析为已封装的消息结构
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var clientMsg 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: TargetID=%s | MsgType=%d",
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clientMsg.ReceiverID, clientMsg.MessageType)
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// 设置发送者ID（避免客户端冒充）
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clientMsg.SenderID = senderID
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// 发送消息
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sendMessageToClient(clientMsg.ReceiverID, clientMsg)
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return
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}
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// 无法识别的消息格式
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log.Printf("⚠️ 无法识别的消息格式: Size=%d bytes | Message=%s", len(message), string(message))
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}
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// 消息发送处理（HTTP API）- 通过客户端ID发送
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func sendMessageHandler(c *gin.Context) {
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start := time.Now()
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var payload SendMessagePayload
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if err := c.ShouldBindJSON(&payload); err != nil {
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log.Printf("⚠️ 无效的JSON请求格式: %v", err)
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c.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: request_type=%s target_client_id=%s receiver_user_id=%s sender_user_id=%s receiver_user_id=%s",
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payload.RequestType, payload.TargetClientID, payload.ReceiverUserID, payload.SenderUserID, payload.ReceiverUserID)
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c.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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// 只处理发送消息请求
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if payload.RequestType == "send_message" {
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log.Printf("📤 处理API发送请求: SenderUser=%s | MsgType=%d",
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payload.SenderUserID, payload.MessageType)
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// 构建客户端消息结构
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clientMsg := ClientReceivedMessage{
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SenderID: "system", // API消息标记为系统发送
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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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// 根据目标类型发送
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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 = 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 = 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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c.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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c.JSON(http.StatusInternalServerError, gin.H{"error": sendErr.Error()})
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return
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}
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c.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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c.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
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func bindHandler(c *gin.Context) {
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start := time.Now()
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var req BindRequest
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if err := c.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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c.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: user_id=%s client_id=%s", req.UserID, req.ClientID)
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c.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: UserID=%s ClientID=%s", req.UserID, req.ClientID)
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// 执行绑定
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if err := bindClientToUser(req.ClientID, req.UserID); err != nil {
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log.Printf("❌ 绑定失败: %v", err)
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c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
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return
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}
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c.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: UserID=%s ClientID=%s | 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（新增独立接口）
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func sendToUserHandler(c *gin.Context) {
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start := time.Now()
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var payload SendToUserPayload
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if err := c.ShouldBindJSON(&payload); err != nil {
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log.Printf("⚠️ 无效的JSON请求格式: %v", err)
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c.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: receiver_user_id=%s sender_user_id=%s",
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payload.ReceiverUserID, payload.SenderUserID)
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c.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: SenderUser=%s → ReceiverUser=%s | MsgType=%d",
|
||
payload.SenderUserID, payload.ReceiverUserID, payload.MessageType)
|
||
|
||
// 构建客户端消息结构
|
||
clientMsg := ClientReceivedMessage{
|
||
SenderID: "system", // 标记为系统发送
|
||
ReceiverID: "", // 留空，通过用户ID发送
|
||
SenderUserID: payload.SenderUserID,
|
||
ReceiverUserID: payload.ReceiverUserID,
|
||
MessageType: payload.MessageType,
|
||
Content: payload.MessageContent,
|
||
SendTime: time.Now().Format(time.RFC3339),
|
||
}
|
||
|
||
if err := sendMessageToUser(payload.ReceiverUserID, clientMsg); err != nil {
|
||
c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
|
||
return
|
||
}
|
||
|
||
c.JSON(http.StatusOK, gin.H{
|
||
"code": 0,
|
||
"status": "success",
|
||
"message": fmt.Sprintf("消息已发送至用户 %s", payload.ReceiverUserID),
|
||
})
|
||
|
||
log.Printf("✅ API请求完成: Duration=%s", time.Since(start))
|
||
}
|
||
|
||
// 绑定客户端与用户
|
||
func bindClientToUser(clientID, userID string) error {
|
||
// 存储 clientid -> userid 映射
|
||
if err := redisCli.HSet(redisCtx, ClientUserKey, clientID, userID).Err(); err != nil {
|
||
return fmt.Errorf("保存client-user映射失败: %w", err)
|
||
}
|
||
|
||
// 存储 userid -> clientid 映射（使用集合存储用户所有在线的clientID）
|
||
userClientKey := fmt.Sprintf("%s:%s", UserClientKey, userID)
|
||
if err := redisCli.SAdd(redisCtx, userClientKey, clientID).Err(); err != nil {
|
||
return fmt.Errorf("保存user-client映射失败: %w", err)
|
||
}
|
||
|
||
// 设置过期时间（防止无效数据堆积）
|
||
expiration := 24 * time.Hour
|
||
if err := redisCli.Expire(redisCtx, userClientKey, expiration).Err(); err != nil {
|
||
log.Printf("⚠️ 设置过期时间失败: %v", err)
|
||
}
|
||
|
||
log.Printf("🔗 用户绑定成功: ClientID=%s → UserID=%s", clientID, userID)
|
||
return nil
|
||
}
|
||
|
||
// 通过用户ID发送消息
|
||
func sendMessageToUser(userID string, msg ClientReceivedMessage) error {
|
||
start := time.Now()
|
||
log.Printf("👤 通过用户ID发送消息: UserID=%s", userID)
|
||
|
||
// 获取用户关联的所有clientID
|
||
userClientKey := fmt.Sprintf("%s:%s", UserClientKey, userID)
|
||
clientIDs, err := redisCli.SMembers(redisCtx, userClientKey).Result()
|
||
if err != nil {
|
||
return fmt.Errorf("获取用户clientID失败: %w", err)
|
||
}
|
||
|
||
if len(clientIDs) == 0 {
|
||
return fmt.Errorf("用户未绑定任何客户端")
|
||
}
|
||
|
||
log.Printf("📡 找到 %d 个关联的客户端: UserID=%s", len(clientIDs), userID)
|
||
|
||
var successCount, failCount int
|
||
var lastError error
|
||
|
||
for _, clientID := range clientIDs {
|
||
// 创建消息副本并设置目标clientID
|
||
targetMsg := msg
|
||
targetMsg.ReceiverID = clientID
|
||
|
||
if err := sendMessageToClient(clientID, targetMsg); err != nil {
|
||
log.Printf("❌ 发送消息到客户端失败: ClientID=%s | %v", clientID, err)
|
||
failCount++
|
||
lastError = err
|
||
} else {
|
||
successCount++
|
||
}
|
||
}
|
||
|
||
log.Printf("📬 消息发送完成: 成功 %d, 失败 %d | UserID=%s | Duration=%s",
|
||
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（核心函数）
|
||
func sendMessageToClient(clientID string, msg ClientReceivedMessage) error {
|
||
start := time.Now()
|
||
|
||
// 序列化客户端消息
|
||
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")
|
||
}
|
||
|
||
// 检查目标客户端是否在当前节点
|
||
if conn := getClient(clientID); conn != nil {
|
||
log.Printf("📤 向本地客户端发送消息: ClientID=%s | MsgType=%d | 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)
|
||
removeClient(clientID) // 移除失效连接
|
||
return fmt.Errorf("发送消息失败")
|
||
}
|
||
|
||
log.Printf("✅ 消息成功发送到本地客户端: ClientID=%s | Duration=%s",
|
||
clientID, time.Since(start))
|
||
return nil
|
||
}
|
||
|
||
// 如果目标客户端不在当前节点，则通过Redis转发
|
||
log.Printf("🌐 向远程节点转发消息: ClientID=%s", clientID)
|
||
|
||
redisMsg := RedisMessage{
|
||
SenderNodeID: nodeID,
|
||
ClientID: clientID,
|
||
Message: string(msgJSON), // 原始JSON字符串
|
||
}
|
||
|
||
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")
|
||
}
|
||
|
||
// 发布到Redis的ws_messages频道
|
||
if err := redisCli.Publish(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: ClientID=%s | Size=%d bytes | Duration=%s",
|
||
clientID, len(redisMsgJSON), time.Since(start))
|
||
return nil
|
||
}
|
||
|
||
// 订阅Redis消息
|
||
func subscribeToRedis() {
|
||
pubsub := redisCli.Subscribe(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 RedisMessage
|
||
|
||
// 解析Redis消息
|
||
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: Sender=%s | ClientID=%s | Size=%d bytes",
|
||
redisMsg.SenderNodeID, redisMsg.ClientID, len(msg.Payload))
|
||
|
||
// 如果是本地节点发送的消息，忽略
|
||
if redisMsg.SenderNodeID == nodeID {
|
||
log.Println("ℹ️ 忽略本节点转发的消息")
|
||
continue
|
||
}
|
||
|
||
// 发送给本地客户端
|
||
if conn := getClient(redisMsg.ClientID); conn != nil {
|
||
// 直接使用Redis中的原始消息字符串
|
||
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)
|
||
removeClient(redisMsg.ClientID)
|
||
continue
|
||
}
|
||
|
||
log.Printf("✅ Redis消息已处理: ClientID=%s | Duration=%s",
|
||
redisMsg.ClientID, time.Since(start))
|
||
} else {
|
||
log.Printf("⚠️ 目标客户端不在本节点: ClientID=%s", redisMsg.ClientID)
|
||
}
|
||
}
|
||
}
|
||
|
||
// 生成客户端ID (格式: <节点ID>-<UUID>)
|
||
func generateClientID() string {
|
||
return fmt.Sprintf("%s-%s", nodeID, uuid.New().String())
|
||
}
|
||
|
||
// 添加客户端到映射
|
||
func addClient(clientID string, conn *websocket.Conn) {
|
||
clientsMux.Lock()
|
||
defer clientsMux.Unlock()
|
||
clients[clientID] = conn
|
||
log.Printf("📌 添加客户端到连接池: ClientID=%s | 当前连接数=%d",
|
||
clientID, len(clients))
|
||
}
|
||
|
||
// 从映射中移除客户端
|
||
func removeClient(clientID string) {
|
||
clientsMux.Lock()
|
||
defer clientsMux.Unlock()
|
||
|
||
if _, exists := clients[clientID]; !exists {
|
||
return
|
||
}
|
||
|
||
delete(clients, clientID)
|
||
log.Printf("🗑️ 从连接池移除客户端: ClientID=%s | 当前连接数=%d",
|
||
clientID, len(clients))
|
||
|
||
// 从Redis中移除clientid的绑定信息
|
||
// 注意：这里只移除clientid->userid映射，userid->clientid映射在过期时会自动清理
|
||
if err := redisCli.HDel(redisCtx, ClientUserKey, clientID).Err(); err != nil {
|
||
log.Printf("⚠️ 删除client_user_mapping失败: %v", err)
|
||
}
|
||
}
|
||
|
||
// 获取客户端连接
|
||
func getClient(clientID string) *websocket.Conn {
|
||
clientsMux.RLock()
|
||
defer clientsMux.RUnlock()
|
||
return clients[clientID]
|
||
}
|
||
|
||
// 获取环境变量值，如果不存在则使用默认值
|
||
func getEnv(key, defaultValue string) string {
|
||
if value := os.Getenv(key); value != "" {
|
||
return value
|
||
}
|
||
return defaultValue
|
||
}
|