fix(dispatcher): 多智能体专家超时 —— 卡死专家不再拖垮协调(T4.E)
- specialistTool 加 timeout 字段(默认 specialistTimeout=3min,专家可多轮 react+工具故给宽) - InvokableRun 用 WithTimeout 包裹专家派发;超时(DeadlineExceeded)作为"观察" 跳过该专家(err=nil),lead 据其余专家继续综合,不中断整个协调 - 2 单测:卡死专家 ~50ms 跳过并返回超时观察 / 正常专家不受影响 - timeout=0 时不包裹(向后兼容既有 specialistTool 构造) Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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@@ -3,6 +3,7 @@ package eino
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import (
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"context"
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"encoding/json"
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"errors"
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"fmt"
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"strings"
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"time"
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@@ -69,10 +70,11 @@ func parseSpecialists(cfg map[string]any) []specialistSpec {
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// specialistTool 把一个专家(react.Agent 或 ChatModel)包成 Eino InvokableTool(agent-as-tool):
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// 入参 brief = lead 写给它的定制简报;返回专家的精炼结论。每次派发落一条 agent 轨迹。
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type specialistTool struct {
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info *schema.ToolInfo
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name string
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run func(ctx context.Context, brief string) (string, error)
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tr *execTracer
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info *schema.ToolInfo
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name string
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run func(ctx context.Context, brief string) (string, error)
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tr *execTracer
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timeout time.Duration // 单次派发上限;0=不限。超时作为"观察"跳过该专家,不中断协调。
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}
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func (s *specialistTool) Info(context.Context) (*schema.ToolInfo, error) { return s.info, nil }
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@@ -94,8 +96,19 @@ func (s *specialistTool) InvokableRun(ctx context.Context, argsJSON string, _ ..
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bud.AddPrompt(brief)
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}
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end := s.tr.span("agent:"+s.name, "agent", "派发专家 "+s.name)
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out, err := s.run(ctx, brief)
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rctx := ctx
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if s.timeout > 0 {
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var cancel context.CancelFunc
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rctx, cancel = context.WithTimeout(ctx, s.timeout)
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defer cancel()
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}
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out, err := s.run(rctx, brief)
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if err != nil {
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// 超时单独提示:作为"观察"跳过该专家,lead 据其余专家继续综合(不中断协调)。
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if s.timeout > 0 && errors.Is(err, context.DeadlineExceeded) {
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end("专家超时", err)
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return fmt.Sprintf("专家 %s 超时(>%s),本轮跳过其结论。", s.name, s.timeout), nil
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}
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end("专家执行失败", err)
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return "专家 " + s.name + " 执行失败:" + err.Error(), nil
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}
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@@ -125,7 +138,7 @@ func (o *Orchestrator) buildSpecialists(ctx context.Context, specs []specialistS
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continue
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}
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out = append(out, &specialistTool{
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name: spec.Name, tr: tr, run: run,
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name: spec.Name, tr: tr, run: run, timeout: specialistTimeout,
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info: &schema.ToolInfo{
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Name: spec.Name,
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Desc: firstNonEmpty(spec.Use, "专家 "+spec.Name),
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