0b7d1b999c
feat(agent): 重构随口记为模型控制码分流 + 单请求聚合规划，关闭非流式thinking并修复假成功，将随口记全流程从10s+缩短到5s左右，显著提升用户体验 路由层改为“模型控制码协议”分流（quick_note|chat），替换关键词/置信度猜测 路由命中 quick_note 时信任路由，graph 跳过二次意图判定（减少一次 LLM 调用） 新增单请求聚合规划：一次返回 title/deadline_at/priority_group/priority_reason/banter 快路径优先复用聚合结果；优先级缺失时本地兜底，避免再次触发优先级模型调用 最终回复优先使用聚合 banter，聚合路径缺失时使用固定文案，不再额外润色调用 非流式 Generate 全面显式关闭 thinking，并收紧 max_tokens/temperature（路由、JSON规划、banter） 保留并强化写库成功门槛：task_id > 0 才允许成功回包，修复“回复成功但未落库”风险 增加/更新测试：控制码解析、nonce 校验、标题提取、banter 复用与无效 task_id 防假成功 保持 OpenAI 兼容 SSE 格式与现有流式聊天链路不变
528 lines
18 KiB
Go
528 lines
18 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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"regexp"
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"strings"
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"time"
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"github.com/LoveLosita/smartflow/backend/agent"
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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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const (
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// quickNoteRouteControlTimeout 是“模型控制码分流”这一步的额外超时。
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// 说明：
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// 1) 设为 0 代表“不额外加子超时”，完全跟随父请求上下文；
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// 2) 避免路由步骤因过短子超时反复触发 context deadline exceeded；
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// 3) 若后续需要强制保护，可再改为 >0 的值并通过配置化管理。
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quickNoteRouteControlTimeout = 0 * time.Second
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)
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var (
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// quickNoteRouteHeaderRegex 解析模型返回的控制头：
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// <SMARTFLOW_ROUTE nonce="xxx" action="quick_note|chat"></SMARTFLOW_ROUTE>
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quickNoteRouteHeaderRegex = regexp.MustCompile(`(?is)<\s*smartflow_route\b[^>]*\bnonce\s*=\s*["']?([a-zA-Z0-9\-]+)["']?[^>]*\baction\s*=\s*["']?(quick_note|chat)["']?[^>]*>`)
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// quickNoteRouteReasonRegex 解析可选理由块：
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// <SMARTFLOW_REASON>...</SMARTFLOW_REASON>
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quickNoteRouteReasonRegex = regexp.MustCompile(`(?is)<\s*smartflow_reason\s*>(.*?)<\s*/\s*smartflow_reason\s*>`)
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)
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type quickNoteRouteAction string
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const (
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quickNoteRouteActionChat quickNoteRouteAction = "chat"
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quickNoteRouteActionQuickNote quickNoteRouteAction = "quick_note"
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)
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// quickNoteRouteControlDecision 是“模型控制码分流”的结构化结果。
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// 该结构不会直接暴露给前端，仅用于服务端决定后续链路：
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// - action=quick_note -> 进入随口记 graph；
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// - action=chat -> 进入普通聊天流。
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type quickNoteRouteControlDecision struct {
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Action quickNoteRouteAction
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Reason string
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Raw string
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}
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// quickNoteRoutingDecision 是对“是否进入随口记 graph”的最终决策。
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// 字段说明：
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// - EnterQuickNote：是否进入随口记 graph；
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// - TrustRoute：是否信任上游控制码并跳过 graph 内的二次意图判定；
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// - Detail：阶段状态文案，用于前端/调试可观测性。
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type quickNoteRoutingDecision struct {
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EnterQuickNote bool
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TrustRoute bool
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Detail string
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}
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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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// - 这里不输出 role，避免和后续正文的 role 块冲突；
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// - 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 := agent.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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// - 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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// - 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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// - state：用于拼接最终“一次性正文回复”。
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// 参数说明：
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// - trustRoute=true：信任上游控制码，graph 跳过二次意图判定，直接进入时间校验/优先级/写库流程。
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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 *agent.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 = agent.NewQuickNoteState(traceID, userID, chatID, userMessage)
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finalState, runErr := agent.RunQuickNoteGraph(ctx, agent.QuickNoteGraphRunInput{
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Model: selectedModel,
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State: state,
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Deps: agent.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 agent.QuickNoteCreateTaskRequest) (*agent.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 &agent.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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// - 保持现有 OpenAI 兼容格式不变；
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// - 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 := agent.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 := agent.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（避免硬编码“薯饼”这类场景分支）；
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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 *agent.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 agent.IsValidTaskPriority(state.ExtractedPriority) {
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priorityText = fmt.Sprintf("优先级：%s", agent.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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// 优先复用“聚合规划阶段”产出的跟进句，避免再触发一次润色模型调用。
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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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// 快路径兜底：单请求聚合已走过一次模型调用，若未产出 banter 则直接使用固定文案，
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// 避免再发起额外模型请求拉高总时延。
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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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// - 只生成跟进语气，不承担事实表达；
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// - 不得改动任务事实；
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// - 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(agent.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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// 简单兜底：只保留首行，避免模型输出多段。
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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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// 新策略：改为“模型控制码分流”，不再依赖关键词和本地猜测。
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//
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// 处理流程：
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// 1) 先调用路由模型拿控制码（quick_note / chat）；
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// 2) 控制码可解析时按模型判定分流；
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// 3) 控制码超时/解析失败时，进入随口记 graph 做兜底意图识别，避免遗漏任务。
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//
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// 返回值说明：
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// - EnterQuickNote=true：进入随口记 graph；
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// - TrustRoute=true：跳过 graph 内二次意图判定；
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// - Detail：用于阶段推送，向前端解释“为何进入该分支”。
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func (s *AgentService) decideQuickNoteRouting(ctx context.Context, selectedModel *ark.ChatModel, userMessage string) quickNoteRoutingDecision {
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decision, err := s.routeByModelControlTag(ctx, selectedModel, userMessage)
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if err != nil {
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if deadline, ok := ctx.Deadline(); ok {
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log.Printf("quick note 路由控制码失败，进入 graph 兜底: err=%v parent_deadline_in_ms=%d route_timeout_ms=%d",
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err,
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time.Until(deadline).Milliseconds(),
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quickNoteRouteControlTimeout.Milliseconds(),
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)
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} else {
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log.Printf("quick note 路由控制码失败，进入 graph 兜底: err=%v parent_deadline=none route_timeout_ms=%d",
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err,
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quickNoteRouteControlTimeout.Milliseconds(),
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)
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}
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return quickNoteRoutingDecision{
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EnterQuickNote: true,
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TrustRoute: false,
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Detail: "路由判定暂不可用，已进入任务识别兜底流程。",
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}
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}
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switch decision.Action {
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case quickNoteRouteActionQuickNote:
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reason := strings.TrimSpace(decision.Reason)
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if reason == "" {
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reason = "模型识别到任务安排请求，准备执行随口记。"
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}
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return quickNoteRoutingDecision{
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EnterQuickNote: true,
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TrustRoute: true,
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Detail: reason,
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}
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case quickNoteRouteActionChat:
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return quickNoteRoutingDecision{
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EnterQuickNote: false,
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TrustRoute: false,
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Detail: "",
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}
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default:
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log.Printf("quick note 未知路由动作，进入 graph 兜底: action=%s raw=%s", decision.Action, decision.Raw)
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return quickNoteRoutingDecision{
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EnterQuickNote: true,
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TrustRoute: false,
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Detail: "路由结果异常，已进入任务识别兜底流程。",
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}
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}
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}
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// routeByModelControlTag 通过模型返回“控制码”完成分流。
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// 输出协议由 QuickNoteRouteControlPrompt 约束，核心字段：
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// - nonce：防伪随机串，防止模型回显历史脏内容；
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// - action：quick_note / chat。
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func (s *AgentService) routeByModelControlTag(ctx context.Context, selectedModel *ark.ChatModel, userMessage string) (*quickNoteRouteControlDecision, error) {
|
||
if selectedModel == nil {
|
||
return nil, fmt.Errorf("model is nil")
|
||
}
|
||
|
||
nonce := strings.ToLower(strings.ReplaceAll(uuid.NewString(), "-", ""))
|
||
routeCtx, cancel := deriveRouteControlContext(ctx, quickNoteRouteControlTimeout)
|
||
defer cancel()
|
||
|
||
nowText := time.Now().In(time.Local).Format("2006-01-02 15:04")
|
||
userPrompt := fmt.Sprintf("nonce=%s\n当前时间=%s\n用户输入=%s", nonce, nowText, strings.TrimSpace(userMessage))
|
||
resp, err := selectedModel.Generate(routeCtx, []*schema.Message{
|
||
schema.SystemMessage(agent.QuickNoteRouteControlPrompt),
|
||
schema.UserMessage(userPrompt),
|
||
},
|
||
ark.WithThinking(&arkModel.Thinking{Type: arkModel.ThinkingTypeDisabled}),
|
||
einoModel.WithTemperature(0),
|
||
einoModel.WithMaxTokens(80),
|
||
)
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
if resp == nil {
|
||
return nil, fmt.Errorf("empty route response")
|
||
}
|
||
|
||
raw := strings.TrimSpace(resp.Content)
|
||
if raw == "" {
|
||
return nil, fmt.Errorf("empty route content")
|
||
}
|
||
|
||
decision, parseErr := parseQuickNoteRouteControlTag(raw, nonce)
|
||
if parseErr != nil {
|
||
return nil, parseErr
|
||
}
|
||
return decision, nil
|
||
}
|
||
|
||
// deriveRouteControlContext 为“控制码路由”创建子上下文。
|
||
// 设计要点：
|
||
// 1. 如果父 ctx 没有 deadline，则增加一个默认上限，防止异常请求无限等待；
|
||
// 2. 如果父 ctx 已有更紧 deadline，则直接沿用父 ctx，不再额外缩短，
|
||
// 避免出现“父请求还活着，但子路由因更短超时提前失败”的误判。
|
||
func deriveRouteControlContext(parent context.Context, timeout time.Duration) (context.Context, context.CancelFunc) {
|
||
if timeout <= 0 {
|
||
return context.WithCancel(parent)
|
||
}
|
||
if deadline, ok := parent.Deadline(); ok {
|
||
if time.Until(deadline) <= timeout {
|
||
return context.WithCancel(parent)
|
||
}
|
||
}
|
||
return context.WithTimeout(parent, timeout)
|
||
}
|
||
|
||
// parseQuickNoteRouteControlTag 解析模型输出控制码。
|
||
// 容错策略：
|
||
// - 允许大小写、属性顺序、标签内额外属性有差异；
|
||
// - 但 nonce 必须精确匹配，action 必须为 quick_note/chat。
|
||
func parseQuickNoteRouteControlTag(raw, expectedNonce string) (*quickNoteRouteControlDecision, error) {
|
||
text := strings.TrimSpace(raw)
|
||
if text == "" {
|
||
return nil, fmt.Errorf("route content is empty")
|
||
}
|
||
|
||
header := quickNoteRouteHeaderRegex.FindStringSubmatch(text)
|
||
if len(header) < 3 {
|
||
return nil, fmt.Errorf("route header not found: %s", text)
|
||
}
|
||
|
||
nonce := strings.ToLower(strings.TrimSpace(header[1]))
|
||
if nonce != strings.ToLower(strings.TrimSpace(expectedNonce)) {
|
||
return nil, fmt.Errorf("route nonce mismatch")
|
||
}
|
||
|
||
actionText := strings.ToLower(strings.TrimSpace(header[2]))
|
||
action := quickNoteRouteAction(actionText)
|
||
if action != quickNoteRouteActionQuickNote && action != quickNoteRouteActionChat {
|
||
return nil, fmt.Errorf("invalid route action: %s", actionText)
|
||
}
|
||
|
||
reason := ""
|
||
reasonMatch := quickNoteRouteReasonRegex.FindStringSubmatch(text)
|
||
if len(reasonMatch) >= 2 {
|
||
reason = strings.TrimSpace(reasonMatch[1])
|
||
}
|
||
|
||
return &quickNoteRouteControlDecision{
|
||
Action: action,
|
||
Reason: reason,
|
||
Raw: text,
|
||
}, nil
|
||
}
|
||
|
||
// persistChatAfterReply 在“随口记 graph”返回后，复用当前项目的后置持久化策略：
|
||
// 1) 用户消息写 Redis + outbox/DB；
|
||
// 2) 助手消息写 Redis + outbox/DB。
|
||
func (s *AgentService) persistChatAfterReply(
|
||
ctx context.Context,
|
||
userID int,
|
||
chatID string,
|
||
userMessage string,
|
||
assistantReply string,
|
||
errChan chan error,
|
||
) {
|
||
if err := s.agentCache.PushMessage(ctx, chatID, &schema.Message{Role: schema.User, Content: userMessage}); err != nil {
|
||
log.Printf("写入用户消息到 Redis 失败: %v", err)
|
||
}
|
||
|
||
if err := s.saveChatHistoryReliable(ctx, model.ChatHistoryPersistPayload{
|
||
UserID: userID,
|
||
ConversationID: chatID,
|
||
Role: "user",
|
||
Message: userMessage,
|
||
}); err != nil {
|
||
pushErrNonBlocking(errChan, err)
|
||
return
|
||
}
|
||
|
||
if err := s.agentCache.PushMessage(context.Background(), chatID, &schema.Message{Role: schema.Assistant, Content: assistantReply}); err != nil {
|
||
log.Printf("写入助手消息到 Redis 失败: %v", err)
|
||
}
|
||
|
||
if err := s.saveChatHistoryReliable(context.Background(), model.ChatHistoryPersistPayload{
|
||
UserID: userID,
|
||
ConversationID: chatID,
|
||
Role: "assistant",
|
||
Message: assistantReply,
|
||
}); err != nil {
|
||
pushErrNonBlocking(errChan, err)
|
||
}
|
||
}
|