45 lines
1.9 KiB
Python
45 lines
1.9 KiB
Python
"""统一收尾能力不足、资源缺失和动作修正失败
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这里只整理内部失败原因，面向用户的说明由回答节点交给模型总结，代码中不写死给用户的文案
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"""
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from app.processor.base import BaseNode
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from app.processor.state import QueryState
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def failure_notice(state: QueryState) -> str:
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"""汇总上游记录的失败原因、最近一次修正分析和校验错误，作为交给模型的事实说明"""
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facts = []
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if reason := state.get("failure_reason"):
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facts.append(reason)
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plan = state.get("repair_plan")
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if plan is not None and plan.reason not in facts:
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facts.append(f"失败分析：{plan.reason}")
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if errors := state.get("validation_errors"):
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facts.append("校验错误：" + "；".join(error.message for error in errors))
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facts.append(f"已自动修正 {state.get('retry_count', 0)} 次")
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detail = "\n".join(facts) if facts else "没有记录具体原因"
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return f"本次修改请求没有执行，内部原因如下：\n{detail}"
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class FallbackNode(BaseNode):
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name = "fallback_node"
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def process(self, state: QueryState) -> QueryState:
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# 浅拷贝状态
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updated_state: QueryState = state.copy()
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notice = failure_notice(state)
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self.logger.warning(notice)
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# 将任务标记为最终失败，由回答节点向用户说明原因
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updated_state["status"] = "failed"
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updated_state["failure_reason"] = notice
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updated_state["notice"] = notice
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# 显式标记校验未通过，防止残留动作被当作可执行结果
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updated_state["validation_passed"] = False
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# 清空旧模拟快照，避免失败结果中仍携带之前的成功快照
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updated_state["simulated_screen"] = None
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# 返回统一的失败状态，保留原动作和错误信息供排查
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return updated_state
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