507 lines
16 KiB
Go
507 lines
16 KiB
Go
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// Package service - WebSocket服务
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// 功能：WebSocket连接管理、消息推送、心跳维护
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package service
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import (
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"context"
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"customer-server/dao"
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"customer-server/model/dto"
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"customer-server/model/entity"
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"customer-server/util"
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"errors"
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"net/http"
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commonMongo "gitea.com/red-future/common/db/mongo"
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"gitea.com/red-future/common/jaeger"
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"gitea.com/red-future/common/rabbitmq"
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"gitea.com/red-future/common/redis"
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"gitea.com/red-future/common/utils"
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"github.com/gogf/gf/v2/container/gmap"
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"github.com/gogf/gf/v2/encoding/gjson"
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"github.com/gogf/gf/v2/errors/gerror"
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"github.com/gogf/gf/v2/net/ghttp"
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"github.com/gogf/gf/v2/os/glog"
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"github.com/gogf/gf/v2/os/gtime"
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"github.com/gogf/gf/v2/util/gconv"
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"github.com/gorilla/websocket"
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"go.mongodb.org/mongo-driver/v2/bson"
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"go.mongodb.org/mongo-driver/v2/mongo"
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)
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// WebSocket 全局单例
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var WebSocket = &websocketService{
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connections: gmap.NewStrAnyMap(true),
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upgrader: websocket.Upgrader{
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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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}
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// GoFrame 并发安全 Map
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type websocketService struct {
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connections *gmap.StrAnyMap
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upgrader websocket.Upgrader
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}
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// key: userId_platform
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// wsConnection WebSocket 连接信息
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type wsConnection struct {
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UserId string
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Platform string
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TenantId string
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AccountName string // 客服账号ID
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Conn *websocket.Conn
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CreatedAt int64
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}
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// 租户ID缓存 Key 前缀和过期时间
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const (
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tenantCacheKeyPrefix = "tenant:custsvc:"
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tenantCacheExpire = 300 // 5分钟
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)
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// resolveTenantId 获取租户ID（兼容仅有accountName的场景）
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// 参数: ctx - 上下文，r - HTTP请求对象
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// 返回: tenantId - 租户ID，err - 错误信息
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// 功能: 优先从token获取，其次从客服账号查询，支持缓存
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func (s *websocketService) resolveTenantId(ctx context.Context, r *ghttp.Request) (tenantId string, err error) {
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// 1. 优先从 token 获取
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if user, userErr := util.GetTenantInfo(ctx); userErr == nil {
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if id := gconv.String(user.TenantId); id != "" {
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return id, nil
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}
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}
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if r == nil {
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return "", gerror.New("无法获取租户信息：缺少请求上下文")
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}
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// 2. 从请求参数获取 accountName
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custId := r.Get("accountName").String()
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if custId == "" {
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custId = r.Get("account_name").String()
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}
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if custId == "" {
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return "", gerror.New("缺少 accountName 参数")
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}
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// 2. 从 Redis 缓存查询
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cacheKey := tenantCacheKeyPrefix + custId
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if cached, _ := redis.RedisClient().Get(ctx, cacheKey); !cached.IsEmpty() {
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return cached.String(), nil
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}
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// 3. Redis 未命中，查询 MongoDB
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coll := commonMongo.GetDB().Collection(entity.CustomerServiceAccountCollection)
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var doc struct {
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TenantId interface{} `bson:"tenantId"`
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}
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filters := []bson.M{
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{"accountName": custId, "isDeleted": false},
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{"accountName": custId}, // 兼容旧数据未设置 isDeleted
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}
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if objectId, objErr := bson.ObjectIDFromHex(custId); objErr == nil {
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filters = append(filters,
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bson.M{"_id": objectId, "isDeleted": false},
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bson.M{"_id": objectId},
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)
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}
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for _, filter := range filters {
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if err = coll.FindOne(ctx, filter).Decode(&doc); err == nil {
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tenantId = gconv.String(doc.TenantId)
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if tenantId == "" {
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return "", gerror.Newf("客服账号 %s 未配置 tenantId", custId)
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}
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// 4. 写入 Redis 缓存
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redis.RedisClient().SetEX(ctx, cacheKey, tenantId, tenantCacheExpire)
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return
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}
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if !errors.Is(err, mongo.ErrNoDocuments) {
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return
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}
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}
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return "", gerror.Newf("客服账号 %s 不存在", custId)
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}
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// Connect 建立 WebSocket 连接
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func (s *websocketService) Connect(ctx context.Context, r *ghttp.Request, userId, platform string) error {
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// 使用原生upgrader升级WebSocket连接
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ws, err := s.upgrader.Upgrade(r.Response.Writer, r.Request, nil)
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if err != nil {
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jaeger.RecordError(ctx, err, "WebSocket 升级失败")
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return err
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}
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defer ws.Close()
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tenantId, err := s.resolveTenantId(ctx, r)
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if err != nil {
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jaeger.RecordError(ctx, err, "获取租户ID失败")
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return err
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}
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// 读取accountName参数（客服账号名称）
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accountName := r.Get("accountName").String()
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if accountName == "" {
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accountName = r.Get("account_name").String()
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}
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glog.Infof(ctx, "WebSocket 连接建立 - 用户: %s, 平台: %s, 租户: %s, 客服账号: %s", userId, platform, tenantId, accountName)
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// key格式: tenantId:userId_platform （确保租户隔离）
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key := tenantId + ":" + userId + "_" + platform
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// 关闭旧连接
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if old := s.connections.Get(key); old != nil {
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old.(*wsConnection).Conn.Close()
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}
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// 注册新连接（携带 TenantId 和 AccountName）
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s.connections.Set(key, &wsConnection{
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UserId: userId,
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Platform: platform,
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TenantId: tenantId,
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AccountName: accountName,
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Conn: ws,
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CreatedAt: gtime.Now().Timestamp(),
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})
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// 发送开场白（连接建立后立即推送）
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if accountName != "" {
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greeting := s.getGreeting(ctx, accountName, tenantId)
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if greeting != "" {
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s.writeJSON(ws, &dto.WebSocketPushMsg{
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Type: "message",
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Message: greeting,
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})
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glog.Infof(ctx, "已发送开场白 - 用户: %s, 客服账号: %s, 长度: %d", userId, accountName, len(greeting))
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} else {
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glog.Warningf(ctx, "客服账号未配置开场白 - accountName: %s, tenantId: %s", accountName, tenantId)
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}
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}
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// 处理消息（阻塞）
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s.handleConnection(ctx, key, ws)
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return nil
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}
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// handleConnection 处理 WebSocket 连接
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func (s *websocketService) handleConnection(ctx context.Context, key string, conn *websocket.Conn) {
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defer func() {
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s.connections.Remove(key)
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conn.Close()
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glog.Infof(ctx, "WebSocket 连接断开 - %s", key)
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}()
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for {
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msgType, message, err := conn.ReadMessage()
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if err != nil {
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// 排除正常关闭情况：正常关闭、离开页面、无状态码关闭
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if websocket.IsUnexpectedCloseError(err,
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websocket.CloseNormalClosure,
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websocket.CloseGoingAway,
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websocket.CloseNoStatusReceived,
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) {
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jaeger.RecordError(ctx, err, "WebSocket 读取错误")
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}
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break
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}
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if msgType != websocket.TextMessage {
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continue
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}
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content := gconv.String(message)
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glog.Infof(ctx, "收到 WebSocket 消息 - %s: %s", key, content)
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// 解析 userId
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connInfo := s.connections.Get(key)
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if connInfo == nil {
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break
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}
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wsConn := connInfo.(*wsConnection)
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// 先检查对话轮数，>5 则只发卡片，跳过话术
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// checkCardBeforeProcess 已推送卡片消息，无需ack
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if handled, err := checkCardBeforeProcess(ctx, wsConn.TenantId, wsConn.UserId, wsConn.Platform); err != nil {
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jaeger.RecordError(ctx, err, "卡片检查失败")
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} else if handled {
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continue
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}
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// 话术匹配并发布响应
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// status 暂时为空，表示任意行为匹配
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// isPushed=true表示已直接推送响应（话术匹配），无需ack
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// isPushed=false表示转发到RAGFlow，需要ack告知用户正在处理
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// 创建带有accountName的context，供GetTenantInfo使用
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newCtx := ctx
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if wsConn.AccountName != "" {
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newCtx = context.WithValue(ctx, "accountName", wsConn.AccountName)
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}
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isPushed, err := Speechcraft.ProcessAndPublish(newCtx, wsConn.UserId, wsConn.Platform, wsConn.TenantId, content, "", wsConn.AccountName)
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if err != nil {
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jaeger.RecordError(ctx, err, "话术处理失败")
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s.writeJSON(conn, &dto.WebSocketPushMsg{Type: "error", Message: "消息处理失败"})
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continue
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}
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// 只在转发到RAGFlow时发送ack（Go直接返回的不需要ack）
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if !isPushed {
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s.writeJSON(conn, &dto.WebSocketPushMsg{Type: "ack", Message: "消息已接收，正在处理..."})
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}
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}
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}
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// writeJSON 发送 JSON 消息
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func (s *websocketService) writeJSON(conn *websocket.Conn, data interface{}) {
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jsonBytes, _ := gjson.Encode(data)
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conn.WriteMessage(websocket.TextMessage, jsonBytes)
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}
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// getGreeting 获取客服账号的开场白
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func (s *websocketService) getGreeting(ctx context.Context, accountName, tenantId string) string {
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glog.Infof(ctx, "查询开场白 - accountName: %s, tenantId: %s", accountName, tenantId)
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// 复用dao层方法，保持查询逻辑一致
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account, err := dao.CustomerServiceAccount.FindByAccountName(ctx, accountName)
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if err != nil {
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jaeger.RecordError(ctx, err, "查询客服账号开场白失败")
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glog.Errorf(ctx, "查询开场白失败: %v", err)
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return ""
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}
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if account == nil {
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glog.Warningf(ctx, "客服账号不存在: accountName=%s", accountName)
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return ""
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}
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// 详细输出查询结果
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glog.Infof(ctx, "查询到客服账号: Id=%s, AccountName=%s, TenantId=%v, Greeting长度=%d, Platform=%s",
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account.Id.Hex(), account.AccountName, account.TenantId, len(account.Greeting), account.Platform)
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return account.Greeting
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}
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// Send 发送消息到 Redis Stream（HTTP 接口）
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func (s *websocketService) Send(ctx context.Context, req *dto.WebSocketSendReq) (*dto.WebSocketSendRes, error) {
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// 从 token 获取租户ID
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var tenantId string
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if user, err := utils.GetUserInfo(ctx); err == nil {
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tenantId = gconv.String(user.TenantId)
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}
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messageId, err := s.sendToStream(ctx, req.UserId, tenantId, req.Content)
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if err != nil {
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return nil, err
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}
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return &dto.WebSocketSendRes{MessageId: messageId}, nil
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}
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// sendToStream 发送消息到 Redis Stream
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// 如果用户无 session 缓存（已归档），则从 MongoDB 读取历史对话一起发送
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func (s *websocketService) sendToStream(ctx context.Context, userId, tenantId, content string) (string, error) {
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now := gtime.Now()
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platform := "xiaohongshu" // 默认平台
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// 获取当前实例的动态响应队列名（自动生成，支持多实例部署）
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baseQueue := GetConfigString(ctx, "rabbitmq.responseQueue")
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replyQueue := rabbitmq.GetInstanceQueueName(baseQueue)
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// 获取accountName（优先使用用户选择的方向映射）
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var accountName string
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var chatId string
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// 1. 尝试从用户状态获取（用户选择方向后的映射）
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if userState, stateErr := redis.GetUserState(ctx, userId, platform); stateErr == nil && userState.AccountName != "" {
|
|||
|
|
accountName = userState.AccountName
|
|||
|
|
glog.Infof(ctx, "使用用户选择方向的客服账号: %s", accountName)
|
|||
|
|
} else {
|
|||
|
|
// 2. 从连接信息获取（默认）
|
|||
|
|
key := tenantId + ":" + userId + "_" + platform
|
|||
|
|
connInfo := s.connections.Get(key)
|
|||
|
|
if connInfo != nil {
|
|||
|
|
wsConn := connInfo.(*wsConnection)
|
|||
|
|
accountName = wsConn.AccountName
|
|||
|
|
glog.Infof(ctx, "使用连接默认客服账号: %s", accountName)
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// 根据accountName查询ragflow_config获取chat_id
|
|||
|
|
if accountName != "" {
|
|||
|
|
config, err := dao.RAGFlowConfig.FindByAccountName(ctx, accountName)
|
|||
|
|
if err == nil && config != nil {
|
|||
|
|
chatId = config.ChatId
|
|||
|
|
glog.Infof(ctx, "查询到chatId: accountName=%s, chatId=%s", accountName, chatId)
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// 如果未找到chatId，报错（应该从ragflowconfig表重建session）
|
|||
|
|
if chatId == "" {
|
|||
|
|
return "", gerror.New("chatId未找到，需要重建RAGFlow session")
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
msg := &redis.SendStreamMessage{
|
|||
|
|
UserId: userId,
|
|||
|
|
TenantId: tenantId,
|
|||
|
|
AccountName: accountName,
|
|||
|
|
ChatId: chatId,
|
|||
|
|
Content: content,
|
|||
|
|
Timestamp: now.Timestamp(),
|
|||
|
|
MessageId: userId + "_" + gconv.String(now.TimestampNano()),
|
|||
|
|
ReplyQueue: replyQueue,
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// 检查是否有 session 缓存，无缓存说明已归档，需要读取历史
|
|||
|
|
if sessionId, _ := redis.GetSessionCache(ctx, tenantId, userId); sessionId == "" {
|
|||
|
|
// 从 MongoDB 读取历史对话
|
|||
|
|
if history, err := dao.Conversation.GetRecentHistory(ctx, userId, redis.GetHistoryContextLimit()); err == nil && len(history) > 0 {
|
|||
|
|
msg.History = history
|
|||
|
|
glog.Infof(ctx, "用户已归档，读取 %d 轮历史对话 - 用户: %s", len(history), userId)
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
messageId, err := redis.AddToStream(ctx, redis.RAGFlowRequestStreamKey, msg)
|
|||
|
|
if err != nil {
|
|||
|
|
return "", err
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
glog.Infof(ctx, "消息已发送到 Stream - MessageID: %s, 用户: %s", messageId, userId)
|
|||
|
|
return messageId, nil
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// SendToUser 发送消息给指定用户
|
|||
|
|
func (s *websocketService) SendToUser(ctx context.Context, tenantId, userId, platform string, data interface{}) error {
|
|||
|
|
// key格式: tenantId:userId_platform
|
|||
|
|
key := tenantId + ":" + userId + "_" + platform
|
|||
|
|
connInfo := s.connections.Get(key)
|
|||
|
|
if connInfo == nil {
|
|||
|
|
glog.Warningf(ctx, "用户不在线 - %s", key)
|
|||
|
|
return nil
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
s.writeJSON(connInfo.(*wsConnection).Conn, data)
|
|||
|
|
return nil
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// Broadcast 广播消息给所有连接
|
|||
|
|
func (s *websocketService) Broadcast(ctx context.Context, content string) {
|
|||
|
|
msg := &dto.WebSocketPushMsg{Type: "broadcast", Content: content}
|
|||
|
|
msgBytes := gjson.MustEncode(msg)
|
|||
|
|
|
|||
|
|
s.connections.Iterator(func(key string, value interface{}) bool {
|
|||
|
|
conn := value.(*wsConnection)
|
|||
|
|
if err := conn.Conn.WriteMessage(websocket.TextMessage, msgBytes); err != nil {
|
|||
|
|
jaeger.RecordError(ctx, err, "广播消息失败 - "+key)
|
|||
|
|
}
|
|||
|
|
return true
|
|||
|
|
})
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// GetOnlineUsers 获取在线用户列表
|
|||
|
|
func (s *websocketService) GetOnlineUsers() *dto.WebSocketOnlineRes {
|
|||
|
|
users := make([]dto.WebSocketOnlineUserRes, 0, s.connections.Size())
|
|||
|
|
|
|||
|
|
s.connections.Iterator(func(_ string, value interface{}) bool {
|
|||
|
|
conn := value.(*wsConnection)
|
|||
|
|
users = append(users, dto.WebSocketOnlineUserRes{
|
|||
|
|
UserId: conn.UserId,
|
|||
|
|
Platform: conn.Platform,
|
|||
|
|
CreatedAt: conn.CreatedAt,
|
|||
|
|
})
|
|||
|
|
return true
|
|||
|
|
})
|
|||
|
|
|
|||
|
|
return &dto.WebSocketOnlineRes{
|
|||
|
|
Count: len(users),
|
|||
|
|
Users: users,
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// PushRAGFlowResponse 推送 RAGFlow 响应给用户
|
|||
|
|
func (s *websocketService) PushRAGFlowResponse(ctx context.Context, tenantId, userId, platform, content string) error {
|
|||
|
|
return s.SendToUser(ctx, tenantId, userId, platform, &dto.WebSocketPushMsg{Type: "answer", Content: content})
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// ============== RabbitMQ 消费者（追问延时消息）==============
|
|||
|
|
|
|||
|
|
// FollowUpConsumer 追问消费者
|
|||
|
|
type FollowUpConsumer struct {
|
|||
|
|
consumer *rabbitmq.Consumer
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// NewFollowUpConsumer 创建追问消费者
|
|||
|
|
func NewFollowUpConsumer(ctx context.Context) *FollowUpConsumer {
|
|||
|
|
queueName := GetConfigString(ctx, "followUp.queue")
|
|||
|
|
return &FollowUpConsumer{
|
|||
|
|
consumer: rabbitmq.NewConsumer(queueName, handleFollowUp),
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// Start 启动消费者
|
|||
|
|
func (c *FollowUpConsumer) Start(ctx context.Context) (err error) {
|
|||
|
|
glog.Info(ctx, "追问消费者启动...")
|
|||
|
|
return c.consumer.Start(ctx)
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// Stop 停止消费者
|
|||
|
|
func (c *FollowUpConsumer) Stop(ctx context.Context) {
|
|||
|
|
c.consumer.Stop(ctx)
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// handleFollowUp 处理追问消息
|
|||
|
|
func handleFollowUp(ctx context.Context, body []byte) (err error) {
|
|||
|
|
ctx, span := jaeger.NewSpan(ctx, "consumer.followup")
|
|||
|
|
defer span.End()
|
|||
|
|
|
|||
|
|
var msg redis.FollowUpMessage
|
|||
|
|
if err = gjson.DecodeTo(body, &msg); err != nil {
|
|||
|
|
jaeger.RecordError(ctx, err, "解析追问消息失败")
|
|||
|
|
return
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
glog.Infof(ctx, "收到追问消息 - 用户: %s, 类型: %d", msg.UserId, msg.FollowUpType)
|
|||
|
|
|
|||
|
|
// 检查用户状态，如果在状态5（方向选择）或状态3（发卡片），跳过追问
|
|||
|
|
userState, err := redis.GetUserState(ctx, msg.UserId, msg.Platform)
|
|||
|
|
if err != nil {
|
|||
|
|
jaeger.RecordError(ctx, err, "获取用户状态失败")
|
|||
|
|
return
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if userState.Stage == 5 {
|
|||
|
|
glog.Infof(ctx, "用户 %s 在方向选择状态，跳过追问", msg.UserId)
|
|||
|
|
return
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if userState.Stage == 3 {
|
|||
|
|
glog.Infof(ctx, "用户 %s 在发卡片状态，跳过追问", msg.UserId)
|
|||
|
|
return
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// 检查用户是否在追问发送后有活跃
|
|||
|
|
isActive, err := redis.IsUserActive(ctx, msg.UserId, int64(redis.GetFollowUpDelay(msg.FollowUpType)))
|
|||
|
|
if err != nil {
|
|||
|
|
jaeger.RecordError(ctx, err, "检查用户活跃状态失败")
|
|||
|
|
return
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if isActive {
|
|||
|
|
glog.Infof(ctx, "用户 %s 在追问期间有活跃，跳过追问", msg.UserId)
|
|||
|
|
return
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// 发送追问消息给用户
|
|||
|
|
if err = WebSocket.PushRAGFlowResponse(ctx, msg.TenantId, msg.UserId, msg.Platform, msg.Content); err != nil {
|
|||
|
|
jaeger.RecordError(ctx, err, "推送追问消息失败")
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
glog.Infof(ctx, "追问消息已发送 - 租户: %s, 用户: %s, 内容: %s", msg.TenantId, msg.UserId, msg.Content)
|
|||
|
|
return
|
|||
|
|
}
|