Version: 0.8.5.dev.260330
后端: 1.把node/plan的具体逻辑做完了,没仔细看,进入下一步之前需要仔细review 前端: 无改动 全仓库: 无改动
This commit is contained in:
@@ -1,8 +1,10 @@
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package newagentstream
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import (
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"context"
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"fmt"
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"strings"
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"time"
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)
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// PayloadEmitter 是真正向外层 SSE 管道写 chunk 的最小接口。
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@@ -13,9 +15,52 @@ import (
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// 3. 只要签名是 `func(string) error`,都能接进来。
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type PayloadEmitter func(payload string) error
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// StageEmitter 是 graph/node 对“当前阶段”进行推送的最小接口。
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// StageEmitter 是 graph/node 对“当前阶段”进行推送的兼容接口。
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//
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// 设计说明:
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// 1. 旧调用侧仍然只关心 stage/detail 两段文本,因此这里先保留;
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// 2. 新的结构化事件能力会通过 ChunkEmitter 补齐,而不是继续扩展这个函数签名;
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// 3. 这样能兼顾当前兼容性和后续协议升级空间。
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type StageEmitter func(stage, detail string)
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// PseudoStreamOptions 描述“整段文字伪流式输出”的切块与节奏配置。
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//
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// 字段语义:
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// 1. MinChunkRunes:达到该最小长度后,若命中标点/换行等边界,可提前切块;
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// 2. MaxChunkRunes:单块最大 rune 数,超过后强制切块,避免一次性发太长;
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// 3. ChunkInterval:块与块之间的等待时间;为 0 时表示只做切块,不做人为延迟。
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type PseudoStreamOptions struct {
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MinChunkRunes int
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MaxChunkRunes int
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ChunkInterval time.Duration
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}
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const (
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defaultPseudoStreamMinChunkRunes = 8
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defaultPseudoStreamMaxChunkRunes = 24
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)
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// DefaultPseudoStreamOptions 返回一份适合中文短句展示的默认伪流式配置。
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func DefaultPseudoStreamOptions() PseudoStreamOptions {
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return PseudoStreamOptions{
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MinChunkRunes: defaultPseudoStreamMinChunkRunes,
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MaxChunkRunes: defaultPseudoStreamMaxChunkRunes,
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}
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}
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// ChunkEmitter 是 newAgent 统一的 SSE chunk 发射器。
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//
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// 职责边界:
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// 1. 负责把“正文 / 思考 / 工具事件 / 确认请求 / 中断提示”统一转换成 OpenAI 兼容 payload;
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// 2. 负责在必要时把结构化事件附带成 extra,同时给当前前端提供可读的降级文本;
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// 3. 不负责决定什么时候发什么,也不负责持久化状态。
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type ChunkEmitter struct {
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emit PayloadEmitter
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RequestID string
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ModelName string
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Created int64
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}
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// NoopPayloadEmitter 返回一个空实现,便于骨架期安全占位。
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func NoopPayloadEmitter() PayloadEmitter {
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return func(string) error { return nil }
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@@ -34,69 +79,320 @@ func WrapStageEmitter(fn func(stage, detail string)) StageEmitter {
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return fn
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}
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// EmitStageAsReasoning 把“阶段提示”伪装成 reasoning chunk 推给前端。
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// NewChunkEmitter 创建统一 chunk 发射器。
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//
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// 设计背景:
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// 1. 你当前 Apifox 只认思考块和正文块,因此阶段提示需要先借 reasoning_content 走通;
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// 2. 这样后续真正前端上线时,只需要在这一层换协议,而不必回到各 skill 重改 graph;
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// 3. 这里不拼花哨格式,只给出稳定、可读、可 grep 的文本。
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func EmitStageAsReasoning(emit PayloadEmitter, requestID, modelName string, created int64, stage, detail string, includeRole bool) error {
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// 兜底策略:
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// 1. emit 为空时回退到 Noop,避免骨架期到处判空;
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// 2. modelName 为空时回填 worker,保持 OpenAI 兼容字段稳定;
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// 3. created <= 0 时用当前时间兜底,避免上层还没决定时间戳就无法复用。
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func NewChunkEmitter(emit PayloadEmitter, requestID, modelName string, created int64) *ChunkEmitter {
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if emit == nil {
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emit = NoopPayloadEmitter()
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}
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modelName = strings.TrimSpace(modelName)
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if modelName == "" {
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modelName = "worker"
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}
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if created <= 0 {
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created = time.Now().Unix()
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}
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return &ChunkEmitter{
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emit: emit,
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RequestID: strings.TrimSpace(requestID),
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ModelName: modelName,
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Created: created,
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}
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}
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// EmitReasoningText 输出一段 reasoning 文字,并附带 reasoning_text extra。
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func (e *ChunkEmitter) EmitReasoningText(blockID, stage, text string, includeRole bool) error {
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if e == nil || e.emit == nil {
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return nil
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}
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text := BuildStageReasoningText(stage, detail)
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payload, err := ToOpenAIReasoningChunk(requestID, modelName, created, text, includeRole)
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text = strings.TrimSpace(text)
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if text == "" {
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return nil
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}
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payload, err := ToOpenAIReasoningChunkWithExtra(
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e.RequestID,
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e.ModelName,
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e.Created,
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text,
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includeRole,
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NewReasoningTextExtra(blockID, stage),
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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 payload == "" {
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return nil
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}
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return emit(payload)
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return e.emit(payload)
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}
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// EmitAssistantText 输出一段 assistant 正文,并附带 assistant_text extra。
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func (e *ChunkEmitter) EmitAssistantText(blockID, stage, text string, includeRole bool) error {
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if e == nil || e.emit == nil {
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return nil
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}
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text = strings.TrimSpace(text)
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if text == "" {
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return nil
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}
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payload, err := ToOpenAIAssistantChunkWithExtra(
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e.RequestID,
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e.ModelName,
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e.Created,
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text,
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includeRole,
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NewAssistantTextExtra(blockID, stage),
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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 payload == "" {
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return nil
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}
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return e.emit(payload)
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}
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// EmitPseudoReasoningText 把整段 reasoning 文本按伪流式方式逐块推出。
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func (e *ChunkEmitter) EmitPseudoReasoningText(ctx context.Context, blockID, stage, text string, options PseudoStreamOptions) error {
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return e.emitPseudoText(
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ctx,
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text,
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options,
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func(chunk string, includeRole bool) error {
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return e.EmitReasoningText(blockID, stage, chunk, includeRole)
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},
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)
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}
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// EmitPseudoAssistantText 把整段 assistant 文本按伪流式方式逐块推出。
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func (e *ChunkEmitter) EmitPseudoAssistantText(ctx context.Context, blockID, stage, text string, options PseudoStreamOptions) error {
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return e.emitPseudoText(
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ctx,
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text,
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options,
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func(chunk string, includeRole bool) error {
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return e.EmitAssistantText(blockID, stage, chunk, includeRole)
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},
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)
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}
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// EmitStatus 输出一条阶段状态事件。
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//
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// 当前兼容策略:
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// 1. extra 用 status 表达结构化语义;
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// 2. reasoning_content 里同时放一份可读降级文本,保证旧前端也能看到。
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func (e *ChunkEmitter) EmitStatus(blockID, stage, code, summary string, includeRole bool) error {
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if e == nil || e.emit == nil {
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return nil
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}
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text := BuildStageReasoningText(stage, summary)
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payload, err := ToOpenAIReasoningChunkWithExtra(
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e.RequestID,
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e.ModelName,
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e.Created,
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text,
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includeRole,
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NewStatusExtra(blockID, stage, code, summary),
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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 payload == "" {
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return nil
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}
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return e.emit(payload)
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}
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// EmitToolCallStart 输出一次工具调用开始事件。
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func (e *ChunkEmitter) EmitToolCallStart(blockID, stage, toolName, summary, argumentsPreview string, includeRole bool) error {
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if e == nil || e.emit == nil {
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return nil
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}
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text := BuildToolCallReasoningText(toolName, summary, argumentsPreview)
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payload, err := ToOpenAIReasoningChunkWithExtra(
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e.RequestID,
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e.ModelName,
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e.Created,
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text,
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includeRole,
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NewToolCallExtra(blockID, stage, toolName, "start", summary, argumentsPreview),
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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 payload == "" {
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return nil
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}
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return e.emit(payload)
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}
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// EmitToolCallResult 输出一次工具调用结果事件。
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func (e *ChunkEmitter) EmitToolCallResult(blockID, stage, toolName, summary, argumentsPreview string, includeRole bool) error {
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if e == nil || e.emit == nil {
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return nil
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}
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text := BuildToolResultReasoningText(toolName, summary)
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payload, err := ToOpenAIReasoningChunkWithExtra(
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e.RequestID,
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e.ModelName,
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e.Created,
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text,
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includeRole,
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NewToolResultExtra(blockID, stage, toolName, "done", summary, argumentsPreview),
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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 payload == "" {
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return nil
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}
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return e.emit(payload)
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}
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// EmitConfirmRequest 输出一次待确认事件。
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//
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// 当前展示策略:
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// 1. 对旧前端,confirm 文案通过 assistant content 直接可见;
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// 2. 对新前端,extra.confirm 可直接驱动确认卡片或按钮;
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// 3. 默认使用伪流式,避免确认文案整块砸下来太生硬。
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func (e *ChunkEmitter) EmitConfirmRequest(ctx context.Context, blockID, stage, interactionID, title, summary string, options PseudoStreamOptions) error {
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if e == nil || e.emit == nil {
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return nil
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}
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text := BuildConfirmAssistantText(title, summary)
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extra := NewConfirmRequestExtra(blockID, stage, interactionID, title, summary)
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return e.emitPseudoText(
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ctx,
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text,
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options,
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func(chunk string, includeRole bool) error {
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payload, err := ToOpenAIAssistantChunkWithExtra(
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e.RequestID,
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e.ModelName,
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e.Created,
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chunk,
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includeRole,
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extra,
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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 payload == "" {
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return nil
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}
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return e.emit(payload)
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},
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)
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}
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// EmitInterruptMessage 输出一次中断提示。
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//
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// 适用场景:
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// 1. ask_user 追问;
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// 2. 告知用户当前会话已进入等待状态;
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// 3. 后续 connection_lost 恢复若需要对用户补一句解释,也可复用这一入口。
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func (e *ChunkEmitter) EmitInterruptMessage(ctx context.Context, blockID, stage, interactionID, interactionType, summary string, options PseudoStreamOptions) error {
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if e == nil || e.emit == nil {
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return nil
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}
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text := BuildInterruptAssistantText(interactionType, summary)
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extra := NewInterruptExtra(blockID, stage, interactionID, interactionType, summary)
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return e.emitPseudoText(
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ctx,
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text,
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options,
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func(chunk string, includeRole bool) error {
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payload, err := ToOpenAIAssistantChunkWithExtra(
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e.RequestID,
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e.ModelName,
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e.Created,
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chunk,
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includeRole,
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extra,
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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 payload == "" {
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return nil
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}
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return e.emit(payload)
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},
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)
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}
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// EmitFinish 统一输出 stop 结束块,并带上 finish extra。
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func (e *ChunkEmitter) EmitFinish(blockID, stage string) error {
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if e == nil || e.emit == nil {
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return nil
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}
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payload, err := ToOpenAIFinishStreamWithExtra(
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e.RequestID,
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e.ModelName,
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e.Created,
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NewFinishExtra(blockID, stage),
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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 payload == "" {
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return nil
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}
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return e.emit(payload)
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}
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// EmitDone 统一输出 OpenAI 兼容流式结束标记。
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func (e *ChunkEmitter) EmitDone() error {
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if e == nil || e.emit == nil {
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return nil
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}
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return e.emit("[DONE]")
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}
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// EmitStageAsReasoning 把“阶段提示”伪装成 reasoning chunk 推给前端。
|
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//
|
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// 兼容说明:
|
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// 1. 保留旧函数签名,方便当前旧链路直接复用;
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// 2. 实际实现已升级为统一的 ChunkEmitter + status extra;
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// 3. 这样后续新链路可以直接跳过这个兼容函数,转用结构化方法。
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func EmitStageAsReasoning(emit PayloadEmitter, requestID, modelName string, created int64, stage, detail string, includeRole bool) error {
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return NewChunkEmitter(emit, requestID, modelName, created).EmitStatus(stage, stage, stage, detail, includeRole)
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}
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// EmitAssistantReply 把一段完整正文作为 assistant chunk 推出。
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//
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// 注意:
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// 1. 这里是“整段发”,不是把文本强行拆碎;
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// 2. 这样后续如果某条链路不需要真流式,也可以复用统一出口;
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// 3. 真正按 token/chunk 细粒度流式输出,应由 llm.Stream + 上层循环处理。
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// 1. 这里保持“整段发”,不主动切块;
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// 2. 若后续某条链路需要更自然的阅读节奏,应直接调用 EmitPseudoAssistantText;
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// 3. 为兼容老调用侧,这里 blockID 和 stage 都留空。
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func EmitAssistantReply(emit PayloadEmitter, requestID, modelName string, created int64, content string, includeRole bool) error {
|
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if emit == nil {
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return nil
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}
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payload, err := ToOpenAIAssistantChunk(requestID, modelName, created, content, includeRole)
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if err != nil {
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return err
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}
|
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if payload == "" {
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return nil
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}
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return emit(payload)
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return NewChunkEmitter(emit, requestID, modelName, created).EmitAssistantText("", "", content, includeRole)
|
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}
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// EmitFinish 统一输出 stop 结束块。
|
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func EmitFinish(emit PayloadEmitter, requestID, modelName string, created int64) error {
|
||||
if emit == nil {
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return nil
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||||
}
|
||||
payload, err := ToOpenAIFinishStream(requestID, modelName, created)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if payload == "" {
|
||||
return nil
|
||||
}
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return emit(payload)
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||||
return NewChunkEmitter(emit, requestID, modelName, created).EmitFinish("", "")
|
||||
}
|
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|
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// EmitDone 统一输出 OpenAI 兼容流式结束标记。
|
||||
func EmitDone(emit PayloadEmitter) error {
|
||||
if emit == nil {
|
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return nil
|
||||
}
|
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return emit("[DONE]")
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return NewChunkEmitter(emit, "", "", 0).EmitDone()
|
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}
|
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|
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// BuildStageReasoningText 生成统一阶段提示文本。
|
||||
@@ -113,3 +409,187 @@ func BuildStageReasoningText(stage, detail string) string {
|
||||
return detail
|
||||
}
|
||||
}
|
||||
|
||||
// BuildToolCallReasoningText 生成“工具调用开始”时的可读提示文本。
|
||||
func BuildToolCallReasoningText(toolName, summary, argumentsPreview string) string {
|
||||
toolName = strings.TrimSpace(toolName)
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||||
summary = strings.TrimSpace(summary)
|
||||
argumentsPreview = strings.TrimSpace(argumentsPreview)
|
||||
|
||||
lines := make([]string, 0, 3)
|
||||
if toolName != "" {
|
||||
lines = append(lines, fmt.Sprintf("正在调用工具:%s", toolName))
|
||||
}
|
||||
if summary != "" {
|
||||
lines = append(lines, summary)
|
||||
}
|
||||
if argumentsPreview != "" {
|
||||
lines = append(lines, fmt.Sprintf("参数摘要:%s", argumentsPreview))
|
||||
}
|
||||
return strings.TrimSpace(strings.Join(lines, "\n"))
|
||||
}
|
||||
|
||||
// BuildToolResultReasoningText 生成“工具调用结果”时的可读提示文本。
|
||||
func BuildToolResultReasoningText(toolName, summary string) string {
|
||||
toolName = strings.TrimSpace(toolName)
|
||||
summary = strings.TrimSpace(summary)
|
||||
|
||||
switch {
|
||||
case toolName != "" && summary != "":
|
||||
return fmt.Sprintf("工具结果:%s\n%s", toolName, summary)
|
||||
case toolName != "":
|
||||
return fmt.Sprintf("工具结果:%s", toolName)
|
||||
default:
|
||||
return summary
|
||||
}
|
||||
}
|
||||
|
||||
// BuildConfirmAssistantText 生成给用户看的确认文案。
|
||||
func BuildConfirmAssistantText(title, summary string) string {
|
||||
title = strings.TrimSpace(title)
|
||||
summary = strings.TrimSpace(summary)
|
||||
|
||||
switch {
|
||||
case title != "" && summary != "":
|
||||
return fmt.Sprintf("%s\n%s", title, summary)
|
||||
case title != "":
|
||||
return title
|
||||
default:
|
||||
return summary
|
||||
}
|
||||
}
|
||||
|
||||
// BuildInterruptAssistantText 生成给用户看的中断文案。
|
||||
func BuildInterruptAssistantText(interactionType, summary string) string {
|
||||
interactionType = strings.TrimSpace(interactionType)
|
||||
summary = strings.TrimSpace(summary)
|
||||
|
||||
switch {
|
||||
case interactionType != "" && summary != "":
|
||||
return fmt.Sprintf("当前进入 %s 阶段。\n%s", interactionType, summary)
|
||||
case summary != "":
|
||||
return summary
|
||||
default:
|
||||
return interactionType
|
||||
}
|
||||
}
|
||||
|
||||
func (e *ChunkEmitter) emitPseudoText(ctx context.Context, text string, options PseudoStreamOptions, emitChunk func(chunk string, includeRole bool) error) error {
|
||||
if emitChunk == nil {
|
||||
return nil
|
||||
}
|
||||
text = strings.TrimSpace(text)
|
||||
if text == "" {
|
||||
return nil
|
||||
}
|
||||
|
||||
chunks := SplitPseudoStreamText(text, options)
|
||||
for i, chunk := range chunks {
|
||||
if err := emitChunk(chunk, i == 0); err != nil {
|
||||
return err
|
||||
}
|
||||
if i < len(chunks)-1 {
|
||||
if err := waitPseudoStreamInterval(ctx, options.ChunkInterval); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// SplitPseudoStreamText 按“标点优先、长度兜底”的策略切分整段文本。
|
||||
//
|
||||
// 步骤说明:
|
||||
// 1. 优先在句号、问号、感叹号、分号、换行等自然边界切块,保证阅读顺畅;
|
||||
// 2. 若长时间遇不到合适边界,则在 MaxChunkRunes 处强制切块,避免整段卡太久;
|
||||
// 3. 对中文文本优先按 rune 长度处理,避免多字节字符被截断。
|
||||
func SplitPseudoStreamText(text string, options PseudoStreamOptions) []string {
|
||||
text = strings.TrimSpace(text)
|
||||
if text == "" {
|
||||
return nil
|
||||
}
|
||||
|
||||
options = normalizePseudoStreamOptions(options)
|
||||
runes := []rune(text)
|
||||
if len(runes) <= options.MaxChunkRunes {
|
||||
return []string{text}
|
||||
}
|
||||
|
||||
chunks := make([]string, 0, len(runes)/options.MinChunkRunes+1)
|
||||
start := 0
|
||||
size := 0
|
||||
for i, r := range runes {
|
||||
size++
|
||||
|
||||
shouldFlush := false
|
||||
if size >= options.MaxChunkRunes {
|
||||
shouldFlush = true
|
||||
}
|
||||
if size >= options.MinChunkRunes && isPseudoStreamBoundary(r) {
|
||||
shouldFlush = true
|
||||
}
|
||||
if !shouldFlush {
|
||||
continue
|
||||
}
|
||||
|
||||
chunk := strings.TrimSpace(string(runes[start : i+1]))
|
||||
if chunk != "" {
|
||||
chunks = append(chunks, chunk)
|
||||
}
|
||||
start = i + 1
|
||||
size = 0
|
||||
}
|
||||
|
||||
if start < len(runes) {
|
||||
chunk := strings.TrimSpace(string(runes[start:]))
|
||||
if chunk != "" {
|
||||
chunks = append(chunks, chunk)
|
||||
}
|
||||
}
|
||||
|
||||
if len(chunks) == 0 {
|
||||
return []string{text}
|
||||
}
|
||||
return chunks
|
||||
}
|
||||
|
||||
func normalizePseudoStreamOptions(options PseudoStreamOptions) PseudoStreamOptions {
|
||||
if options.MinChunkRunes <= 0 {
|
||||
options.MinChunkRunes = defaultPseudoStreamMinChunkRunes
|
||||
}
|
||||
if options.MaxChunkRunes <= 0 {
|
||||
options.MaxChunkRunes = defaultPseudoStreamMaxChunkRunes
|
||||
}
|
||||
if options.MaxChunkRunes < options.MinChunkRunes {
|
||||
options.MaxChunkRunes = options.MinChunkRunes
|
||||
}
|
||||
return options
|
||||
}
|
||||
|
||||
func isPseudoStreamBoundary(r rune) bool {
|
||||
switch r {
|
||||
case '。', '!', '?', ';', ':', ',', '.', '!', '?', ';', ':', ',', '\n':
|
||||
return true
|
||||
default:
|
||||
return false
|
||||
}
|
||||
}
|
||||
|
||||
func waitPseudoStreamInterval(ctx context.Context, interval time.Duration) error {
|
||||
if interval <= 0 {
|
||||
return nil
|
||||
}
|
||||
if ctx == nil {
|
||||
ctx = context.Background()
|
||||
}
|
||||
|
||||
timer := time.NewTimer(interval)
|
||||
defer timer.Stop()
|
||||
|
||||
select {
|
||||
case <-ctx.Done():
|
||||
return ctx.Err()
|
||||
case <-timer.C:
|
||||
return nil
|
||||
}
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user