c689af56c8
✨ feat(agent): 重构 Agent 分层并修复普通聊天助手消息未写入 Redis 的问题 🔧 按职责重构 backend/agent 目录为 route/chat/quicknote 三层结构 🔄 将随口记链路拆分为 graph/nodes/tool/state/prompt，其中 graph 仅负责连线 🏃 新增 quicknote runner（方法引用）来收口节点依赖，提升代码可读性 🔀 将控制码分流逻辑抽离到 agent/route，服务层改为薄封装调用 📚 更新相关 README 与测试引用路径，保持原业务逻辑不变 🐛 修复普通聊天链路遗漏 assistant 写入 Redis 的问题（确保 MySQL 和 Redis 的口径一致）
326 lines
11 KiB
Go
326 lines
11 KiB
Go
package service
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import (
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"context"
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"fmt"
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"log"
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"strings"
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"time"
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"github.com/LoveLosita/smartflow/backend/agent/chat"
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"github.com/LoveLosita/smartflow/backend/agent/quicknote"
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"github.com/LoveLosita/smartflow/backend/agent/route"
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"github.com/LoveLosita/smartflow/backend/model"
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"github.com/cloudwego/eino-ext/components/model/ark"
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einoModel "github.com/cloudwego/eino/components/model"
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"github.com/cloudwego/eino/schema"
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"github.com/google/uuid"
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arkModel "github.com/volcengine/volcengine-go-sdk/service/arkruntime/model"
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)
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// quickNoteRoutingDecision 只是路由层结果的本地别名。
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// 保留这个别名是为了尽量少改调用侧（agent.go 中的字段访问保持不变）。
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type quickNoteRoutingDecision = route.RoutingDecision
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// quickNoteProgressEmitter 负责把“链路阶段状态”伪装成 OpenAI 兼容的 reasoning_content chunk。
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// 设计目标：
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// 1) 不改现有 OpenAI 兼容协议外壳；
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// 2) 让 Apifox 在等待期间也能看到“思考块”，避免用户空等；
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// 3) 该 emitter 只负责状态，不负责最终正文回复和 [DONE] 结束块。
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type quickNoteProgressEmitter struct {
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outChan chan<- string
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modelName string
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requestID string
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created int64
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enablePush bool
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}
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func newQuickNoteProgressEmitter(outChan chan<- string, modelName string, enable bool) *quickNoteProgressEmitter {
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resolvedModel := strings.TrimSpace(modelName)
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if resolvedModel == "" {
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resolvedModel = "worker"
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}
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return &quickNoteProgressEmitter{
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outChan: outChan,
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modelName: resolvedModel,
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requestID: "chatcmpl-" + uuid.NewString(),
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created: time.Now().Unix(),
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enablePush: enable,
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}
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}
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// Emit 按“阶段 + 说明”输出 reasoning_content。
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// 注意：
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// 1) 这里不输出 role，避免和后续正文 role 块冲突；
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// 2) 即使发送失败，也只记录日志，不影响主流程继续执行。
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func (e *quickNoteProgressEmitter) Emit(stage, detail string) {
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if e == nil || !e.enablePush || e.outChan == nil {
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return
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}
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stage = strings.TrimSpace(stage)
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detail = strings.TrimSpace(detail)
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if stage == "" && detail == "" {
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return
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}
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reasoning := fmt.Sprintf("阶段：%s", stage)
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if detail != "" {
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reasoning += "\n" + detail
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}
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chunk, err := chat.ToOpenAIStream(&schema.Message{ReasoningContent: reasoning}, e.requestID, e.modelName, e.created, false)
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if err != nil {
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log.Printf("输出随口记阶段状态失败 stage=%s err=%v", stage, err)
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return
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}
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if chunk != "" {
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e.outChan <- chunk
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}
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}
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// tryHandleQuickNoteWithGraph 尝试用“随口记 graph”处理本次用户输入。
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// 返回值语义：
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// 1) handled=true：本次请求已在随口记链路处理完成（成功/失败都会返回文案）；
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// 2) handled=false：不是随口记意图，调用方应回落普通聊天链路；
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// 3) state：用于拼接最终“一次性正文回复”。
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func (s *AgentService) tryHandleQuickNoteWithGraph(
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ctx context.Context,
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selectedModel *ark.ChatModel,
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userMessage string,
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userID int,
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chatID string,
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traceID string,
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trustRoute bool,
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emitStage func(stage, detail string),
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) (handled bool, state *quicknote.QuickNoteState, err error) {
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if s.taskRepo == nil || selectedModel == nil {
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return false, nil, nil
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}
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state = quicknote.NewQuickNoteState(traceID, userID, chatID, userMessage)
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finalState, runErr := quicknote.RunQuickNoteGraph(ctx, quicknote.QuickNoteGraphRunInput{
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Model: selectedModel,
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State: state,
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Deps: quicknote.QuickNoteToolDeps{
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ResolveUserID: func(ctx context.Context) (int, error) {
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return userID, nil
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},
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CreateTask: func(ctx context.Context, req quicknote.QuickNoteCreateTaskRequest) (*quicknote.QuickNoteCreateTaskResult, error) {
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taskModel := &model.Task{
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UserID: req.UserID,
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Title: req.Title,
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Priority: req.PriorityGroup,
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IsCompleted: false,
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DeadlineAt: req.DeadlineAt,
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}
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created, createErr := s.taskRepo.AddTask(taskModel)
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if createErr != nil {
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return nil, createErr
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}
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return &quicknote.QuickNoteCreateTaskResult{
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TaskID: created.ID,
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Title: created.Title,
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PriorityGroup: created.Priority,
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DeadlineAt: created.DeadlineAt,
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}, nil
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},
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},
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SkipIntentVerification: trustRoute,
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EmitStage: emitStage,
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})
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if runErr != nil {
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return false, nil, runErr
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}
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if finalState == nil || !finalState.IsQuickNoteIntent {
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return false, nil, nil
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}
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return true, finalState, nil
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}
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// emitSingleAssistantCompletion 将单条完整回复包装成 OpenAI 兼容 chunk 流并写入 outChan。
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// 说明：
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// 1) 保持现有 OpenAI 兼容格式不变；
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// 2) 正文只发一次，不做伪分段。
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func emitSingleAssistantCompletion(outChan chan<- string, modelName, reply string) error {
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if strings.TrimSpace(modelName) == "" {
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modelName = "worker"
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}
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requestID := "chatcmpl-" + uuid.NewString()
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created := time.Now().Unix()
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chunk, err := chat.ToOpenAIStream(&schema.Message{Role: schema.Assistant, Content: reply}, requestID, modelName, created, true)
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if err != nil {
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return err
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}
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if chunk != "" {
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outChan <- chunk
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}
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finishChunk, err := chat.ToOpenAIFinishStream(requestID, modelName, created)
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if err != nil {
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return err
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}
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outChan <- finishChunk
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outChan <- "[DONE]"
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return nil
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}
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// buildQuickNoteFinalReply 生成最终的一次性正文回复。
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// 组合策略：
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// 1) 任务事实（标题/优先级/截止时间）由后端拼接，确保准确；
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// 2) 轻松跟进句交给 AI 生成，贴合用户话题；
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// 3) AI 生成失败时自动降级为固定友好文案，保证稳定可用。
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func buildQuickNoteFinalReply(ctx context.Context, selectedModel *ark.ChatModel, userMessage string, state *quicknote.QuickNoteState) string {
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if state == nil {
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return "我这次没成功记上，别急，再发我一次我马上补上。"
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}
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// 仅当“确实拿到了有效 task_id”时才走成功文案，避免出现“回复成功但库里没数据”的错觉。
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if state.Persisted && state.PersistedTaskID > 0 {
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title := strings.TrimSpace(state.ExtractedTitle)
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if title == "" {
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title = "这条任务"
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}
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priorityText := "已安排优先级"
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if quicknote.IsValidTaskPriority(state.ExtractedPriority) {
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priorityText = fmt.Sprintf("优先级：%s", quicknote.PriorityLabelCN(state.ExtractedPriority))
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}
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deadlineText := ""
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if state.ExtractedDeadline != nil {
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deadlineText = fmt.Sprintf("；截止时间 %s", state.ExtractedDeadline.In(time.Local).Format("2006-01-02 15:04"))
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}
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factLine := fmt.Sprintf("好，给你安排上了：%s（%s%s）。", title, priorityText, deadlineText)
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if strings.TrimSpace(state.ExtractedBanter) != "" {
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return factLine + " " + strings.TrimSpace(state.ExtractedBanter)
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}
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if state.PlannedBySingleCall {
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return factLine + " 已帮你稳稳记下，放心推进。"
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}
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banter, err := generateQuickNoteBanter(ctx, selectedModel, userMessage, title, priorityText, deadlineText)
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if err != nil {
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return factLine + " 这下可以先安心推进，不用等 ddl 来敲门了。"
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}
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if strings.TrimSpace(banter) == "" {
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return factLine + " 这下可以先安心推进，不用等 ddl 来敲门了。"
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}
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return factLine + " " + banter
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}
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if strings.TrimSpace(state.DeadlineValidationError) != "" {
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return "我识别到你给了时间，但格式不够明确，暂时不敢乱记。你可以改成比如：2026-03-20 18:30、明天下午3点、下周一上午9点，我立刻帮你安排。"
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}
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if strings.TrimSpace(state.AssistantReply) != "" {
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return strings.TrimSpace(state.AssistantReply)
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}
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return "这次没成功写入任务，我没跑路，再给我一次我就把它稳稳记上。"
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}
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// generateQuickNoteBanter 让模型根据用户原话生成一条“贴题轻松句”。
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// 约束：
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// 1) 只生成跟进语气，不承担事实表达；
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// 2) 不得改动任务事实；
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// 3) 输出控制在一句，方便直接拼接在事实句后。
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func generateQuickNoteBanter(
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ctx context.Context,
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selectedModel *ark.ChatModel,
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userMessage string,
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title string,
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priorityText string,
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deadlineText string,
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) (string, error) {
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if selectedModel == nil {
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return "", fmt.Errorf("model is nil")
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}
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prompt := fmt.Sprintf(`用户原话：%s
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已确认事实：
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- 任务标题：%s
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- %s
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- %s
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请输出一句轻松自然的跟进话术（仅一句）。`,
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strings.TrimSpace(userMessage),
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strings.TrimSpace(title),
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strings.TrimSpace(priorityText),
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strings.TrimSpace(deadlineText),
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)
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messages := []*schema.Message{
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schema.SystemMessage(quicknote.QuickNoteReplyBanterPrompt),
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schema.UserMessage(prompt),
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}
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resp, err := selectedModel.Generate(ctx, messages,
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ark.WithThinking(&arkModel.Thinking{Type: arkModel.ThinkingTypeDisabled}),
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einoModel.WithTemperature(0.7),
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einoModel.WithMaxTokens(72),
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)
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if err != nil {
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return "", err
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}
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if resp == nil {
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return "", fmt.Errorf("empty response")
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}
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text := strings.TrimSpace(resp.Content)
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text = strings.Trim(text, "\"'“”‘’")
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if text == "" {
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return "", fmt.Errorf("empty content")
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}
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if idx := strings.Index(text, "\n"); idx >= 0 {
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text = strings.TrimSpace(text[:idx])
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}
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return text, nil
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}
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// decideQuickNoteRouting 决定当前输入是否进入“随口记 graph”。
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// 该函数只是服务层薄封装，具体控制码解析逻辑已下沉到 agent/route 包。
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func (s *AgentService) decideQuickNoteRouting(ctx context.Context, selectedModel *ark.ChatModel, userMessage string) quickNoteRoutingDecision {
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_ = s
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return route.DecideQuickNoteRouting(ctx, selectedModel, userMessage)
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}
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// persistChatAfterReply 在“随口记 graph”返回后，复用当前项目的后置持久化策略：
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// 1) 用户消息写 Redis + outbox/DB；
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// 2) 助手消息写 Redis + outbox/DB。
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func (s *AgentService) persistChatAfterReply(
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ctx context.Context,
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userID int,
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chatID string,
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userMessage string,
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assistantReply string,
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errChan chan error,
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) {
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if err := s.agentCache.PushMessage(ctx, chatID, &schema.Message{Role: schema.User, Content: userMessage}); err != nil {
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log.Printf("写入用户消息到 Redis 失败: %v", err)
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}
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if err := s.saveChatHistoryReliable(ctx, model.ChatHistoryPersistPayload{
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UserID: userID,
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ConversationID: chatID,
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Role: "user",
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Message: userMessage,
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}); err != nil {
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pushErrNonBlocking(errChan, err)
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return
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}
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if err := s.agentCache.PushMessage(context.Background(), chatID, &schema.Message{Role: schema.Assistant, Content: assistantReply}); err != nil {
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log.Printf("写入助手消息到 Redis 失败: %v", err)
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}
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if err := s.saveChatHistoryReliable(context.Background(), model.ChatHistoryPersistPayload{
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UserID: userID,
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ConversationID: chatID,
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Role: "assistant",
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Message: assistantReply,
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}); err != nil {
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pushErrNonBlocking(errChan, err)
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}
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}
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