d7184b776b
后端： 1.收口阶段 6 agent 结构迁移，将 newAgent 内核与 agentsvc 编排层迁入 services/agent - 切换 Agent 启动装配与 HTTP handler 直连 agent sv，移除旧 service agent bridge - 补齐 Agent 对 memory、task、task-class、schedule 的 RPC 适配与契约字段 - 扩展 schedule、task、task-class RPC/contract 支撑 Agent 查询、写入与 provider 切流 - 更新迁移文档、README 与相关注释，明确 agent 当前切流点和剩余 memory 迁移面
405 lines
15 KiB
Go
405 lines
15 KiB
Go
package agentstream
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import (
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"encoding/json"
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"github.com/cloudwego/eino/schema"
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)
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// OpenAIChunkResponse 是 OpenAI 兼容的流式 chunk DTO。
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//
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// 设计说明：
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// 1. 外层继续保持 OpenAI 兼容壳，避免前端和调试工具一次性大改；
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// 2. 新增顶层 Extra 字段，用来承载“工具调用 / 确认请求 / 中断恢复”等结构化事件；
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// 3. 这样旧前端仍可继续读取 delta.content / delta.reasoning_content，新前端则可渐进消费 extra。
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type OpenAIChunkResponse struct {
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ID string `json:"id"`
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Object string `json:"object"`
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Created int64 `json:"created"`
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Model string `json:"model"`
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Choices []OpenAIChunkChoice `json:"choices,omitempty"`
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Extra *OpenAIChunkExtra `json:"extra,omitempty"`
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}
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// OpenAIChunkChoice 对应 OpenAI choices[0]。
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type OpenAIChunkChoice struct {
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Index int `json:"index"`
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Delta OpenAIChunkDelta `json:"delta"`
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FinishReason *string `json:"finish_reason"`
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}
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// OpenAIChunkDelta 是真正承载 role/content/reasoning 的位置。
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type OpenAIChunkDelta struct {
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Role string `json:"role,omitempty"`
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Content string `json:"content,omitempty"`
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ReasoningContent string `json:"reasoning_content,omitempty"`
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}
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// StreamExtraKind 表示当前 chunk 在业务语义上属于哪类事件。
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type StreamExtraKind string
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const (
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StreamExtraKindReasoningText StreamExtraKind = "reasoning_text"
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StreamExtraKindThinkingSummary StreamExtraKind = "thinking_summary"
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StreamExtraKindAssistantText StreamExtraKind = "assistant_text"
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StreamExtraKindStatus StreamExtraKind = "status"
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StreamExtraKindToolCall StreamExtraKind = "tool_call"
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StreamExtraKindToolResult StreamExtraKind = "tool_result"
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StreamExtraKindConfirm StreamExtraKind = "confirm_request"
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StreamExtraKindInterrupt StreamExtraKind = "interrupt"
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StreamExtraKindBusinessCard StreamExtraKind = "business_card"
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StreamExtraKindFinish StreamExtraKind = "finish"
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StreamExtraKindScheduleCompleted StreamExtraKind = "schedule_completed"
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)
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// StreamDisplayMode 表示前端更适合如何展示该结构化事件。
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type StreamDisplayMode string
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const (
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StreamDisplayModeAppend StreamDisplayMode = "append"
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StreamDisplayModeReplace StreamDisplayMode = "replace"
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StreamDisplayModeCard StreamDisplayMode = "card"
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)
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// OpenAIChunkExtra 是挂在 OpenAI 兼容壳上的结构化扩展字段。
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//
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// 职责边界：
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// 1. Kind / Stage / BlockID 提供前端排版和分组所需的最小元信息；
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// 2. Status / Tool / Confirm / Interrupt / BusinessCard 只存展示层真正需要的摘要，不直接耦合后端完整状态对象；
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// 3. Meta 留给后续做灰度扩展，避免每加一种小字段都要立刻改 DTO 结构。
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type OpenAIChunkExtra struct {
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Kind StreamExtraKind `json:"kind,omitempty"`
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BlockID string `json:"block_id,omitempty"`
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Stage string `json:"stage,omitempty"`
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DisplayMode StreamDisplayMode `json:"display_mode,omitempty"`
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ThinkingSummary *StreamThinkingSummaryExtra `json:"thinking_summary,omitempty"`
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Status *StreamStatusExtra `json:"status,omitempty"`
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Tool *StreamToolExtra `json:"tool,omitempty"`
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Confirm *StreamConfirmExtra `json:"confirm,omitempty"`
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Interrupt *StreamInterruptExtra `json:"interrupt,omitempty"`
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BusinessCard *StreamBusinessCardExtra `json:"business_card,omitempty"`
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Meta map[string]any `json:"meta,omitempty"`
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}
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// StreamThinkingSummaryExtra 表示“流式思考摘要”事件。
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//
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// 职责边界：
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// 1. short_summary 仅用于 SSE 端快速展示短句，不要求与持久化内容完全一致；
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// 2. detail_summary 作为更完整的摘要正文，后续持久化层可直接复用；
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// 3. summary_seq / final / duration_seconds 由摘要调度层补充运行态信息，前端可据此去重和排序。
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type StreamThinkingSummaryExtra struct {
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SummarySeq int `json:"summary_seq,omitempty"`
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ShortSummary string `json:"short_summary,omitempty"`
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DetailSummary string `json:"detail_summary,omitempty"`
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Final bool `json:"final,omitempty"`
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DurationSeconds float64 `json:"duration_seconds,omitempty"`
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}
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// StreamStatusExtra 表示普通阶段状态或提示性事件。
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type StreamStatusExtra struct {
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Code string `json:"code,omitempty"`
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Summary string `json:"summary,omitempty"`
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}
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// StreamToolExtra 表示一次工具调用相关事件。
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type StreamToolExtra struct {
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Name string `json:"name,omitempty"`
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Status string `json:"status,omitempty"`
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Summary string `json:"summary,omitempty"`
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ArgumentsPreview string `json:"arguments_preview,omitempty"`
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ArgumentView map[string]any `json:"argument_view,omitempty"`
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ResultView map[string]any `json:"result_view,omitempty"`
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}
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// StreamConfirmExtra 表示一次待确认事件的展示摘要。
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type StreamConfirmExtra struct {
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InteractionID string `json:"interaction_id,omitempty"`
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Title string `json:"title,omitempty"`
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Summary string `json:"summary,omitempty"`
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}
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// StreamInterruptExtra 表示一次中断事件的展示摘要。
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type StreamInterruptExtra struct {
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InteractionID string `json:"interaction_id,omitempty"`
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Type string `json:"type,omitempty"`
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Summary string `json:"summary,omitempty"`
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}
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// StreamBusinessCardExtra 表示一张业务结果卡片。
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//
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// 职责边界：
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// 1. CardType 只允许前端已约定的卡片类型（task_query/task_record）；
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// 2. Source 仅在 task_record 时有语义，其他卡片类型可为空；
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// 3. Data 承载“可直接渲染的最小快照”，避免前端再二次补拉才能看到结果。
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type StreamBusinessCardExtra struct {
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CardType string `json:"card_type,omitempty"`
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Title string `json:"title,omitempty"`
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Summary string `json:"summary,omitempty"`
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Source string `json:"source,omitempty"`
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Data map[string]any `json:"data,omitempty"`
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}
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// ToOpenAIStream 把 Eino message 转成 OpenAI 兼容 chunk。
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func ToOpenAIStream(chunk *schema.Message, requestID, modelName string, created int64, includeRole bool) (string, error) {
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return ToOpenAIStreamWithExtra(chunk, requestID, modelName, created, includeRole, nil)
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}
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// ToOpenAIStreamWithExtra 把 Eino message 转成带 extra 的 OpenAI 兼容 chunk。
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//
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// 职责边界：
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// 1. 负责把 chunk.Content / chunk.ReasoningContent 映射到协议字段；
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// 2. 负责挂载可选 extra，供前端识别工具调用、确认请求等结构化事件；
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// 3. 不负责发送，也不负责决定“这个 chunk 该不该推”。
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func ToOpenAIStreamWithExtra(chunk *schema.Message, requestID, modelName string, created int64, includeRole bool, extra *OpenAIChunkExtra) (string, error) {
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delta := OpenAIChunkDelta{}
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if includeRole {
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delta.Role = "assistant"
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}
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if chunk != nil {
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delta.Content = chunk.Content
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delta.ReasoningContent = chunk.ReasoningContent
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}
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return buildOpenAIChunkPayload(requestID, modelName, created, delta, nil, extra)
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}
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// ToOpenAIReasoningChunk 直接构造一个 reasoning chunk。
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func ToOpenAIReasoningChunk(requestID, modelName string, created int64, reasoning string, includeRole bool) (string, error) {
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return ToOpenAIReasoningChunkWithExtra(requestID, modelName, created, reasoning, includeRole, nil)
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}
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// ToOpenAIReasoningChunkWithExtra 直接构造一个带 extra 的 reasoning chunk。
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func ToOpenAIReasoningChunkWithExtra(requestID, modelName string, created int64, reasoning string, includeRole bool, extra *OpenAIChunkExtra) (string, error) {
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delta := OpenAIChunkDelta{ReasoningContent: reasoning}
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if includeRole {
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delta.Role = "assistant"
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}
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return buildOpenAIChunkPayload(requestID, modelName, created, delta, nil, extra)
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}
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// ToOpenAIAssistantChunk 直接构造一个正文 chunk。
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func ToOpenAIAssistantChunk(requestID, modelName string, created int64, content string, includeRole bool) (string, error) {
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return ToOpenAIAssistantChunkWithExtra(requestID, modelName, created, content, includeRole, nil)
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}
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// ToOpenAIAssistantChunkWithExtra 直接构造一个带 extra 的正文 chunk。
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func ToOpenAIAssistantChunkWithExtra(requestID, modelName string, created int64, content string, includeRole bool, extra *OpenAIChunkExtra) (string, error) {
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delta := OpenAIChunkDelta{Content: content}
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if includeRole {
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delta.Role = "assistant"
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}
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return buildOpenAIChunkPayload(requestID, modelName, created, delta, nil, extra)
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}
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// ToOpenAIFinishStream 生成流式结束 chunk（finish_reason=stop）。
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func ToOpenAIFinishStream(requestID, modelName string, created int64) (string, error) {
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return ToOpenAIFinishStreamWithExtra(requestID, modelName, created, nil)
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}
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// ToOpenAIFinishStreamWithExtra 生成带 extra 的流式结束 chunk。
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func ToOpenAIFinishStreamWithExtra(requestID, modelName string, created int64, extra *OpenAIChunkExtra) (string, error) {
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stop := "stop"
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return buildOpenAIChunkPayload(requestID, modelName, created, OpenAIChunkDelta{}, &stop, extra)
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}
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// NewReasoningTextExtra 创建“思考文字”事件的 extra。
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func NewReasoningTextExtra(blockID, stage string) *OpenAIChunkExtra {
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return &OpenAIChunkExtra{
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Kind: StreamExtraKindReasoningText,
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BlockID: blockID,
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Stage: stage,
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DisplayMode: StreamDisplayModeAppend,
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}
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}
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// NewThinkingSummaryExtra 创建“流式思考摘要”事件的 extra。
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func NewThinkingSummaryExtra(blockID, stage string, summary StreamThinkingSummaryExtra) *OpenAIChunkExtra {
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return &OpenAIChunkExtra{
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Kind: StreamExtraKindThinkingSummary,
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BlockID: blockID,
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Stage: stage,
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DisplayMode: StreamDisplayModeAppend,
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ThinkingSummary: &summary,
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}
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}
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// NewAssistantTextExtra 创建“正文文字”事件的 extra。
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func NewAssistantTextExtra(blockID, stage string) *OpenAIChunkExtra {
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return &OpenAIChunkExtra{
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Kind: StreamExtraKindAssistantText,
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BlockID: blockID,
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Stage: stage,
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DisplayMode: StreamDisplayModeAppend,
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}
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}
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// NewStatusExtra 创建普通状态事件的 extra。
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func NewStatusExtra(blockID, stage, code, summary string) *OpenAIChunkExtra {
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return &OpenAIChunkExtra{
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Kind: StreamExtraKindStatus,
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BlockID: blockID,
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Stage: stage,
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DisplayMode: StreamDisplayModeCard,
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Status: &StreamStatusExtra{
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Code: code,
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Summary: summary,
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},
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}
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}
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// NewToolCallExtra 创建“工具调用开始/中间态”事件的 extra。
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func NewToolCallExtra(blockID, stage, toolName, status, summary, argumentsPreview string) *OpenAIChunkExtra {
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return &OpenAIChunkExtra{
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Kind: StreamExtraKindToolCall,
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BlockID: blockID,
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Stage: stage,
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DisplayMode: StreamDisplayModeCard,
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Tool: &StreamToolExtra{
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Name: toolName,
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Status: status,
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Summary: summary,
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ArgumentsPreview: argumentsPreview,
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},
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}
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}
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// NewToolResultExtra 创建“工具结果”事件的 extra。
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func NewToolResultExtra(
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blockID string,
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stage string,
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toolName string,
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status string,
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summary string,
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argumentsPreview string,
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argumentView map[string]any,
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resultView map[string]any,
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) *OpenAIChunkExtra {
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return &OpenAIChunkExtra{
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Kind: StreamExtraKindToolResult,
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BlockID: blockID,
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Stage: stage,
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DisplayMode: StreamDisplayModeCard,
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Tool: &StreamToolExtra{
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Name: toolName,
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Status: status,
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Summary: summary,
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ArgumentsPreview: argumentsPreview,
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ArgumentView: argumentView,
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ResultView: resultView,
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},
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}
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}
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// NewConfirmRequestExtra 创建“待确认”事件的 extra。
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func NewConfirmRequestExtra(blockID, stage, interactionID, title, summary string) *OpenAIChunkExtra {
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return &OpenAIChunkExtra{
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Kind: StreamExtraKindConfirm,
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BlockID: blockID,
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Stage: stage,
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DisplayMode: StreamDisplayModeCard,
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Confirm: &StreamConfirmExtra{
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InteractionID: interactionID,
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Title: title,
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Summary: summary,
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},
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}
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}
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// NewInterruptExtra 创建“中断”事件的 extra。
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func NewInterruptExtra(blockID, stage, interactionID, interactionType, summary string) *OpenAIChunkExtra {
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return &OpenAIChunkExtra{
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Kind: StreamExtraKindInterrupt,
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BlockID: blockID,
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Stage: stage,
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DisplayMode: StreamDisplayModeCard,
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Interrupt: &StreamInterruptExtra{
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InteractionID: interactionID,
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Type: interactionType,
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Summary: summary,
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},
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}
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}
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// NewBusinessCardExtra 创建“业务结果卡片”事件的 extra。
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func NewBusinessCardExtra(blockID, stage string, businessCard *StreamBusinessCardExtra) *OpenAIChunkExtra {
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return &OpenAIChunkExtra{
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Kind: StreamExtraKindBusinessCard,
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BlockID: blockID,
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Stage: stage,
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DisplayMode: StreamDisplayModeCard,
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BusinessCard: businessCard,
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}
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}
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// NewScheduleCompletedExtra 创建”排程完毕”卡片事件的 extra。
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//
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// 职责边界：
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// 1. 仅作为前端渲染”排程完毕小卡片”的信号，不携带排程数据；
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// 2. 前端收到此事件后，自行通过对话 ID 调用现有接口拉取排程详情；
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// 3. 触发条件：CommonState.HasScheduleChanges == true 且 IsCompleted()。
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func NewScheduleCompletedExtra(blockID, stage string) *OpenAIChunkExtra {
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return &OpenAIChunkExtra{
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Kind: StreamExtraKindScheduleCompleted,
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BlockID: blockID,
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Stage: stage,
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DisplayMode: StreamDisplayModeCard,
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}
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}
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// NewFinishExtra 创建”收尾完成”事件的 extra。
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func NewFinishExtra(blockID, stage string) *OpenAIChunkExtra {
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return &OpenAIChunkExtra{
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Kind: StreamExtraKindFinish,
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BlockID: blockID,
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Stage: stage,
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DisplayMode: StreamDisplayModeReplace,
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}
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}
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func buildOpenAIChunkPayload(requestID, modelName string, created int64, delta OpenAIChunkDelta, finishReason *string, extra *OpenAIChunkExtra) (string, error) {
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// 1. 若既没有 role，也没有正文/思考，也没有 finish_reason，且也没有 extra，则视为“空块”，直接跳过。
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// 2. 这样后续 emitter 即使拆成“结构化事件 + 文本事件”双轨，也能复用统一的空块兜底。
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if delta.Role == "" && delta.Content == "" && delta.ReasoningContent == "" && finishReason == nil && !hasStreamExtra(extra) {
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return "", nil
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}
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choices := make([]OpenAIChunkChoice, 0, 1)
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if delta.Role != "" || delta.Content != "" || delta.ReasoningContent != "" || finishReason != nil {
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choices = append(choices, OpenAIChunkChoice{
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Index: 0,
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Delta: delta,
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FinishReason: finishReason,
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})
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}
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dto := OpenAIChunkResponse{
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ID: requestID,
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Object: "chat.completion.chunk",
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Created: created,
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Model: modelName,
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Choices: choices,
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Extra: extra,
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}
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data, err := json.Marshal(dto)
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if err != nil {
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return "", err
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}
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return string(data), nil
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}
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func hasStreamExtra(extra *OpenAIChunkExtra) bool {
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if extra == nil {
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return false
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}
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return extra.Kind != "" ||
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extra.BlockID != "" ||
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extra.Stage != "" ||
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extra.DisplayMode != "" ||
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extra.ThinkingSummary != nil ||
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extra.Status != nil ||
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extra.Tool != nil ||
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extra.Confirm != nil ||
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extra.Interrupt != nil ||
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extra.BusinessCard != nil ||
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len(extra.Meta) > 0
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}
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