90 lines
2.2 KiB
Markdown
90 lines
2.2 KiB
Markdown
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# 中台智能体运行时加固（MARH）设计文档
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## 1. 设计目标
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围绕 AC-MARH-01~12，构建中台运行时加固层，确保输出可控、打断可消费、检索可依赖、时延可治理、节奏可调优。
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---
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## 2. 架构改造点
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## 2.1 对话主链路增强
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在 `respond` 主流程增加以下阶段：
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1. `interrupt_context_enricher`：消费 `interrupted_segments`
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2. `kb_default_tool_stage`：Agent 默认检索工具尝试
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3. `output_guardrail_stage`：输出前强制过滤
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4. `segment_humanizer`：语义+长度分段与 delay 计算
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5. `runtime_observer`：补齐 trace 与 metrics
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## 2.2 超时统一治理
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- ReAct 最大循环：3~5
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- 单工具超时：<=2000ms
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- 全链路超时：<=8000ms
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- 超时均落 `fallback_reason_code`
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---
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## 3. 关键流程
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## 3.1 正常响应流程
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1. 收到请求并校验已送达历史
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2. 若存在中断片段则做语义去重标记
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3. policy_router 决策
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4. Agent 模式默认调用 KB 工具（可降级）
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5. 生成候选文本
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6. 输出护栏强制过滤
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7. 分段拟人策略生成 `segments[]`
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8. 输出 trace（guardrail/interrupt/kb_hit/timeouts/segment_stats）
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## 3.2 打断重入流程
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1. 新请求带 `interrupted_segments`
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2. 重规划时避开被打断语义
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3. 若中断信息异常则兜底继续
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---
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## 4. 数据结构与字段补充
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新增或强化 trace 字段：
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- `guardrail_triggered`
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- `guardrail_rule_id`
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- `interrupt_consumed`
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- `kb_tool_called`
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- `kb_hit`
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- `segment_stats`
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- `timeout_profile`
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---
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## 5. 组件职责
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- `OutputGuardrailExecutor`
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- 强制执行输出过滤
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- 返回 blocked/filtered_text/rule_id
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- `InterruptContextEnricher`
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- 将中断片段转成重规划上下文
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- 提供异常兜底
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- `DefaultKbToolRunner`
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- Agent 默认 KB 检索
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- 失败时返回降级信号
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- `SegmentHumanizer`
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- 文本分段与 delay 生成
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- 支持租户覆盖配置
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- `RuntimeObserver`
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- 汇总 trace 与 metrics
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---
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## 6. 与 AC 映射
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- AC-MARH-01/02：`OutputGuardrailExecutor`
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- AC-MARH-03/04：`InterruptContextEnricher`
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- AC-MARH-05/06：`DefaultKbToolRunner`
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- AC-MARH-07/08/09：`TimeoutGovernor + Orchestrator`
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- AC-MARH-10/11：`SegmentHumanizer`
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- AC-MARH-12：`RuntimeObserver`
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