feat(report): 报告生成端到端 — 规划→分章并行检索撰写→渲染真实 Word
- shared: 新增 intent=report 任务约定 + ReportPath(跨进程共享落盘目录,零配置对齐) - dispatcher: handleReport 专用编排(DeepSeek 规划大纲 → 各章并行 RAG 检索+撰写 → 汇聚 → report_render),Pool.Chat 非流式聚合;进度与正文经 Token 流实时回流 - mcp-go: 用标准库 archive/zip + OOXML 拼出真实可打开的 .docx(零额外依赖), report_render 工具落盘到共享目录;附 docx 有效性测试 - gateway: POST /reports 触发;GET /reports/:id/download 下发 Word - desktop: 新增「报告」页(主题→实时编排进度→下载 Word),左导航置为就绪 实测:DeepSeek 生成 5 章报告 → 渲染 5KB docx → file 识别为 Microsoft Word 2007+ → textutil 提取标题/各章正文完整。 Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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package eino
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import (
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"context"
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"encoding/json"
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"fmt"
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"log"
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"strings"
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"sync"
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"time"
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"github.com/sundynix/sundynix-dispatcher/internal/dsl"
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"github.com/sundynix/sundynix-dispatcher/internal/llm"
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"github.com/sundynix/sundynix-shared/contract"
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)
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// 报告生成的并发与超时参数。
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const (
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reportFanout = 4 // 章节并行撰写的最大并发
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reportRenderWait = 12 * time.Second // 渲染 docx 的等待上限
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)
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// reportOutline 是规划阶段产出的大纲。
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type reportOutline struct {
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Title string `json:"title"`
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Sections []string `json:"sections"`
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}
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// reportSection 是一章成稿(标题 + 正文)。
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type reportSection struct {
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Heading string `json:"heading"`
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Body string `json:"body"`
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}
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// handleReport 执行报告生成的专用多步编排:
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//
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// 规划大纲 → 各章节并行(RAG 检索 + LLM 撰写) → 汇聚 → 渲染 Word(.docx) → 回流进度与正文
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//
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// 全程把人可读的 Markdown 进度与正文经 sundynix.streams.<id> 流回客户端;
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// 最终调 mcp-go 的 report_render 落盘 docx,客户端凭 task_id 下载。
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func (o *Orchestrator) handleReport(ctx context.Context, t *contract.Task) error {
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defer func() { _ = o.sink.CompleteStream(t.ID) }()
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topic, _ := t.Meta[contract.MetaTopic].(string)
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kb, _ := t.Meta[contract.MetaKB].(string)
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if topic == "" {
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topic = dsl.Compile(t.Graph).Query // 兜底:从 DSL 取用户输入
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}
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if topic == "" {
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topic = "未命名报告"
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}
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log.Printf("[report] task %s 生成报告: topic=%q kb=%q", t.ID, topic, kb)
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o.emit(t.ID, "> 正在规划大纲…\n\n")
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outline := o.planOutline(ctx, topic)
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o.emit(t.ID, fmt.Sprintf("**报告大纲**(%d 章)\n", len(outline.Sections)))
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for i, s := range outline.Sections {
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o.emit(t.ID, fmt.Sprintf("%d. %s\n", i+1, s))
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}
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if kb != "" {
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o.emit(t.ID, fmt.Sprintf("\n> 正在并行检索知识库 %q 资料并撰写各章…\n\n", kb))
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} else {
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o.emit(t.ID, "\n> 正在并行撰写各章…\n\n")
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}
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sections := o.writeSections(ctx, topic, kb, outline.Sections)
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// 把完整报告正文流式呈现给客户端。
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o.emit(t.ID, "\n---\n\n# "+firstNonEmpty(outline.Title, topic)+"\n\n")
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for _, s := range sections {
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o.emit(t.ID, "## "+s.Heading+"\n\n"+s.Body+"\n\n")
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}
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// 渲染真实 Word 文档。
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o.emit(t.ID, "> 正在渲染 Word 文档…\n\n")
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if path := o.renderReport(ctx, t.ID, firstNonEmpty(outline.Title, topic), sections); path != "" {
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o.emit(t.ID, "---\n✅ 报告已生成 Word 文档,可点击上方「下载 Word」保存。\n")
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log.Printf("[report] task %s 完成,docx=%s", t.ID, path)
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} else {
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o.emit(t.ID, "---\n⚠️ Word 渲染未完成(渲染服务不可用),以上为报告正文。\n")
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}
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o.breaker.Report(true)
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return nil
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}
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// planOutline 让模型规划 3–5 章大纲;模型不可用/解析失败则用通用兜底大纲。
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func (o *Orchestrator) planOutline(ctx context.Context, topic string) reportOutline {
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fallback := reportOutline{Title: topic, Sections: []string{"背景与现状", "核心分析", "结论与建议"}}
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if !o.pool.Ready() {
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return fallback
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}
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sys := "你是资深报告撰稿人,擅长搭建清晰的报告结构。"
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user := fmt.Sprintf("请为主题《%s》规划一份报告大纲。"+
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"只输出 JSON:{\"title\":\"报告标题\",\"sections\":[\"章节标题\", ...]},3 到 5 章,不要任何多余文字。", topic)
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txt, err := o.pool.Chat(ctx, []llm.ChatMessage{{Role: "system", Content: sys}, {Role: "user", Content: user}})
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if err != nil {
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log.Printf("[report] 规划大纲失败,用兜底大纲: %v", err)
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return fallback
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}
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var out reportOutline
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if json.Unmarshal([]byte(stripFence(txt)), &out) != nil || len(out.Sections) == 0 {
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log.Printf("[report] 大纲 JSON 解析失败,用兜底大纲。原文: %s", truncate(txt, 200))
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return fallback
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}
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if out.Title == "" {
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out.Title = topic
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}
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return out
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}
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// writeSections 各章节并行撰写(有界并发),结果按原顺序返回。
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func (o *Orchestrator) writeSections(ctx context.Context, topic, kb string, headings []string) []reportSection {
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out := make([]reportSection, len(headings))
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sem := make(chan struct{}, reportFanout)
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var wg sync.WaitGroup
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for i, h := range headings {
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wg.Add(1)
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go func(i int, h string) {
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defer wg.Done()
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sem <- struct{}{}
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defer func() { <-sem }()
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out[i] = reportSection{Heading: h, Body: o.writeSection(ctx, topic, kb, h)}
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}(i, h)
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}
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wg.Wait()
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return out
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}
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// writeSection 撰写一章:先 RAG 检索参考资料(若挂了知识库),再让模型成稿。
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func (o *Orchestrator) writeSection(ctx context.Context, topic, kb, heading string) string {
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refs := o.retrieve(ctx, kb, topic+" "+heading)
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if !o.pool.Ready() {
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if refs != "" {
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return "(模型未配置,以下为检索到的参考资料)\n" + refs
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}
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return "(模型未配置,无法撰写本章。)"
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}
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sys := "你是专业报告撰稿人,语言严谨、条理清晰,使用中文书面语。"
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var ub strings.Builder
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fmt.Fprintf(&ub, "报告主题:%s\n本章标题:%s\n", topic, heading)
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if refs != "" {
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ub.WriteString("可参考的资料(来自知识库检索,请甄别采用,不要照搬):\n")
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ub.WriteString(refs)
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ub.WriteString("\n")
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}
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ub.WriteString("请就「本章标题」撰写 200–400 字正文。只输出正文,不要重复标题、不要再列提纲。")
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txt, err := o.pool.Chat(ctx, []llm.ChatMessage{{Role: "system", Content: sys}, {Role: "user", Content: ub.String()}})
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if err != nil {
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log.Printf("[report] 撰写「%s」失败: %v", heading, err)
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return "(本章撰写失败:" + err.Error() + ")"
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}
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return strings.TrimSpace(txt)
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}
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// retrieve 经 mcp-go kb_search 工具检索知识库,整理为可读参考资料。kb 为空或无召回则返回空。
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func (o *Orchestrator) retrieve(ctx context.Context, kb, query string) string {
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if o.tools == nil || kb == "" {
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return ""
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}
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cctx, cancel := context.WithTimeout(ctx, toolCallTimeout)
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defer cancel()
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res, err := o.tools.CallTool(cctx, contract.ToolSubjectGo("kb_search"), &contract.ToolCall{
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Tool: "kb_search", Args: map[string]any{"kb": kb, "q": query, "topK": 4},
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})
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if err != nil || res == nil || !res.OK || res.Content == "" || res.Content == "[]" {
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return ""
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}
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var hits []struct {
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Text string `json:"text"`
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Score float64 `json:"score"`
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}
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if json.Unmarshal([]byte(res.Content), &hits) != nil {
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return res.Content
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}
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var b strings.Builder
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for i, h := range hits {
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fmt.Fprintf(&b, "%d. %s\n", i+1, strings.TrimSpace(h.Text))
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}
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return b.String()
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}
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// renderReport 经 mcp-go report_render 工具渲染 docx 并落盘,返回文件路径(失败返回空)。
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func (o *Orchestrator) renderReport(ctx context.Context, taskID, title string, secs []reportSection) string {
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if o.tools == nil {
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return ""
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}
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arr := make([]map[string]any, len(secs))
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for i, s := range secs {
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arr[i] = map[string]any{"heading": s.Heading, "body": s.Body}
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}
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cctx, cancel := context.WithTimeout(ctx, reportRenderWait)
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defer cancel()
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res, err := o.tools.CallTool(cctx, contract.ToolSubjectGo("report_render"), &contract.ToolCall{
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Tool: "report_render", TaskID: taskID,
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Args: map[string]any{"title": title, "task_id": taskID, "sections": arr},
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})
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if err != nil || res == nil || !res.OK {
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log.Printf("[report] report_render 失败: %v", err)
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return ""
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}
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return res.Content
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}
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// emit 把一段文本作为 Token 流回客户端(报告进度与正文都走这里)。
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func (o *Orchestrator) emit(taskID, s string) {
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if err := o.sink.PublishToken(taskID, []byte(s)); err != nil {
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log.Printf("[report] emit token failed: %v", err)
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}
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}
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// ---- 小工具 ----
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func firstNonEmpty(a, b string) string {
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if strings.TrimSpace(a) != "" {
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return a
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}
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return b
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}
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// stripFence 去掉模型可能包裹的 ```json … ``` 代码围栏。
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func stripFence(s string) string {
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s = strings.TrimSpace(s)
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if strings.HasPrefix(s, "```") {
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if i := strings.IndexByte(s, '\n'); i >= 0 {
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s = s[i+1:]
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}
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s = strings.TrimSuffix(strings.TrimSpace(s), "```")
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}
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return strings.TrimSpace(s)
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}
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func truncate(s string, n int) string {
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r := []rune(s)
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if len(r) <= n {
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return s
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}
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return string(r[:n]) + "…"
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}
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