后端: 1.获取agent聊天历史记录接口做了如下更改: (1)对reasoning_content也做了存储,同步更改了mysql和redis缓存的读写逻辑 (2)为了承接前端的重试/修改消息的逻辑,进行了一些代码和表单上的改动 前端: 1.agent页面新增了很多小组件,改善交互体验 2.新增重试消息/修改消息并重新发送功能,前者有bug,可能前后端都有问题,待修复。
383 lines
14 KiB
Go
383 lines
14 KiB
Go
package agentsvc
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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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agentgraph "github.com/LoveLosita/smartflow/backend/agent2/graph"
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agentllm "github.com/LoveLosita/smartflow/backend/agent2/llm"
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agentmodel "github.com/LoveLosita/smartflow/backend/agent2/model"
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agentnode "github.com/LoveLosita/smartflow/backend/agent2/node"
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agentrouter "github.com/LoveLosita/smartflow/backend/agent2/router"
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agentstream "github.com/LoveLosita/smartflow/backend/agent2/stream"
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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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"github.com/cloudwego/eino/schema"
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"github.com/google/uuid"
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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 = agentrouter.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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reasoning strings.Builder
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startedAt *time.Time
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}
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// newQuickNoteProgressEmitter 构造“阶段进度推送器”。
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// 该推送器只负责发 reasoning 块,不负责正文回复。
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func newQuickNoteProgressEmitter(outChan chan<- string, modelName string, enable bool) *quickNoteProgressEmitter {
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// 1. 模型名兜底,避免出现空 model 字段导致客户端兼容性问题。
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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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// 2. 每次请求生成独立 request_id,方便前端或日志侧关联本次流式输出。
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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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// 1. 推送器不可用(nil/禁用/无通道)时直接返回,避免 panic。
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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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// 2. 统一清理空白,避免日志和输出里出现异常空字符串。
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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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if e.startedAt == nil {
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now := time.Now()
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e.startedAt = &now
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}
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if e.reasoning.Len() > 0 {
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e.reasoning.WriteString("\n\n")
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}
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if stage != "" {
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e.reasoning.WriteString("阶段:")
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e.reasoning.WriteString(stage)
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}
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if detail != "" {
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if stage != "" {
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e.reasoning.WriteString("\n")
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}
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e.reasoning.WriteString(detail)
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}
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// 3. 调用目的:阶段提示统一走 agent2/stream 的 reasoning chunk 包装,
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// 避免 service 层继续自己拼 OpenAI 兼容 JSON。
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err := agentstream.EmitStageAsReasoning(func(payload string) error {
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e.outChan <- payload
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return nil
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}, e.requestID, e.modelName, e.created, stage, detail, false)
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if err != nil {
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// 3.1 阶段推送失败不应影响主链路,只打日志即可。
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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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}
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func (e *quickNoteProgressEmitter) HistoryText() string {
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if e == nil {
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return ""
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}
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return strings.TrimSpace(e.reasoning.String())
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}
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func (e *quickNoteProgressEmitter) StartedAt() *time.Time {
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if e == nil || e.startedAt == nil {
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return nil
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}
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startCopy := *e.startedAt
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return &startCopy
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}
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func (e *quickNoteProgressEmitter) DurationSeconds(end time.Time) int {
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if e == nil || e.startedAt == nil {
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return 0
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}
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if !end.After(*e.startedAt) {
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return 0
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}
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return int(end.Sub(*e.startedAt) / time.Second)
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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 *agentmodel.QuickNoteState, err error) {
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// 1. 依赖预检:taskRepo 或模型未注入时,不做随口记处理,交给上层回落聊天。
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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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// 2. 初始化随口记状态对象(贯穿 graph 全流程的共享上下文)。
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state = agentmodel.NewQuickNoteState(traceID, userID, chatID, userMessage)
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// 3. 执行 quick note graph。
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// 本次依赖注入了两个“工具能力”:
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// 3.1 ResolveUserID:从当前请求上下文确定 user_id;
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// 3.2 CreateTask:真正执行任务写库。
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finalState, runErr := agentgraph.RunQuickNoteGraph(ctx, agentnode.QuickNoteGraphRunInput{
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Model: selectedModel,
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State: state,
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Deps: agentnode.QuickNoteToolDeps{
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ResolveUserID: func(ctx context.Context) (int, error) {
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// 当前链路 userID 已由上层鉴权拿到,这里直接复用。
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return userID, nil
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},
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CreateTask: func(ctx context.Context, req agentnode.QuickNoteCreateTaskRequest) (*agentnode.QuickNoteCreateTaskResult, error) {
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// 3.2.1 把 quick note 的工具入参映射成项目 Task 模型。
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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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UrgencyThresholdAt: req.UrgencyThresholdAt,
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}
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// 3.2.2 调用 DAO 写库。
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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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// 3.2.3 把写库结果回填给 graph 状态,用于后续回复拼装。
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return &agentnode.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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UrgencyThresholdAt: created.UrgencyThresholdAt,
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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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// 4. graph 执行失败由上层统一决定是否回退普通聊天。
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return false, nil, runErr
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}
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// 5. graph 正常结束但判定“非随口记”时,明确返回 handled=false。
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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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// 6. 走到这里表示随口记链路已完成(含写库成功或业务失败反馈文案)。
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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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// 1. 模型名兜底,保持 OpenAI 兼容响应字段完整。
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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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emit := func(payload string) error {
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outChan <- payload
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return nil
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}
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if err := agentstream.EmitAssistantReply(emit, requestID, modelName, created, reply, true); err != nil {
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return err
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}
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if err := agentstream.EmitFinish(emit, requestID, modelName, created); err != nil {
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return err
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}
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return agentstream.EmitDone(emit)
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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 *agentmodel.QuickNoteState) string {
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// 1. 极端兜底:状态为空时给出稳定失败文案,避免返回空字符串。
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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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// 2. 组装“事实段”:标题 + 优先级 + 截止时间。
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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 agentmodel.IsValidTaskPriority(state.ExtractedPriority) {
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priorityText = fmt.Sprintf("优先级:%s", agentmodel.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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// 2.1 如果 graph 单次请求已生成 banter,直接使用,避免重复调用模型。
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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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// 2.2 聚合调用模式下,通常已在主流程完成风格化,给稳定文案即可。
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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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// 2.3 兜底生成轻松跟进句;失败则降级固定文案,确保体验连续。
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banter, err := agentllm.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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// 3. 若时间校验失败,优先返回“可执行的修正引导”。
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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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// 4. 若 graph 已给出助手回复(例如非意图/业务失败原因),优先透传。
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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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// 5. 最终兜底文案。
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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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// 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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// 这里保留方法是为了让 AgentService 对外语义完整,
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// 同时避免上层调用方直接依赖 route 包,降低耦合。
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_ = s
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return agentrouter.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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assistantReasoning string,
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assistantReasoningDurationSeconds int,
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retryMeta *chatRetryMeta,
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userTokens int,
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assistantTokens int,
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errChan chan error,
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) {
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// 1. 先把用户消息写入 Redis,保证会话上下文“马上可见”。
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userMsg := &schema.Message{Role: schema.User, Content: userMessage}
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if retryExtra := retryMeta.CacheExtra(); len(retryExtra) > 0 {
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userMsg.Extra = retryExtra
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}
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if err := s.agentCache.PushMessage(ctx, chatID, userMsg); 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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// 2. 再把用户消息写入可靠持久化通道(outbox 或同步 DB)。
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if err := s.PersistChatHistory(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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ReasoningContent: "",
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ReasoningDurationSeconds: 0,
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RetryGroupID: retryMeta.GroupIDPtr(),
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RetryIndex: retryMeta.IndexPtr(),
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RetryFromUserMessageID: retryMeta.FromUserMessageIDPtr(),
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RetryFromAssistantMessageID: retryMeta.FromAssistantMessageIDPtr(),
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TokensConsumed: userTokens,
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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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// 3. 助手消息同样遵循“Redis 先行 + 可靠持久化补齐”策略。
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assistantMsg := &schema.Message{Role: schema.Assistant, Content: assistantReply, ReasoningContent: assistantReasoning}
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if assistantReasoningDurationSeconds > 0 {
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assistantMsg.Extra = map[string]any{"reasoning_duration_seconds": assistantReasoningDurationSeconds}
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}
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if retryExtra := retryMeta.CacheExtra(); len(retryExtra) > 0 {
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if assistantMsg.Extra == nil {
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assistantMsg.Extra = make(map[string]any, len(retryExtra))
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}
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for key, value := range retryExtra {
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assistantMsg.Extra[key] = value
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}
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}
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if err := s.agentCache.PushMessage(context.Background(), chatID, assistantMsg); 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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// 4. 助手消息持久化失败不阻断主流程,通过 errChan 异步上报。
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if err := s.PersistChatHistory(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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ReasoningContent: assistantReasoning,
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ReasoningDurationSeconds: assistantReasoningDurationSeconds,
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RetryGroupID: retryMeta.GroupIDPtr(),
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RetryIndex: retryMeta.IndexPtr(),
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RetryFromUserMessageID: retryMeta.FromUserMessageIDPtr(),
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RetryFromAssistantMessageID: retryMeta.FromAssistantMessageIDPtr(),
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TokensConsumed: assistantTokens,
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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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