100 lines
4.9 KiB
Python
100 lines
4.9 KiB
Python
"""输入解析与校验，可直接运行本文件修改示例进行调试"""
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from app.processor.base import BaseNode
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from app.processor.state import QueryState
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from app.schemas.input_context import InputContext
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class InputNode(BaseNode):
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"""纯输入节点，不依赖模型配置；校验失败保留 ValidationError"""
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name = "input_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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# 获取待合并的用户澄清回复
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reply = state.get("clarification_reply")
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# 如果有澄清回复，将补充信息合并到已有上下文后重新处理
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if reply is not None:
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# 将已有上下文转成独立的字典，避免直接修改原上下文中的嵌套数据
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data = state["input_context"].model_dump(mode="json")
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# 记录本轮澄清问题和用户回答，供后续节点理解补充需求
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turn = {
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"question": state["clarification"].question,
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"answer": reply.answer,
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}
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# 如果用户选择了候选项，按选项 ID 查找并保存完整选项内容
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if reply.option_id is not None:
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option = next(
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option
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for option in state["clarification"].options
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if option.id == reply.option_id
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)
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turn["selected_option"] = option.model_dump(mode="json")
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# 将本轮问答追加到历史中，保留多轮澄清信息
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data["clarification_history"].append(turn)
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# 如果回复携带最新大屏快照，用它替换旧快照
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if reply.screen is not None:
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data["screen"] = reply.screen.model_dump(mode="json")
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# 如果没有同时提供交互上下文，清空可能已失效的选中节点和版本号
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if reply.context is None:
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data["context"]["selected_node_ids"] = []
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data["context"]["screen_revision"] = None
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# 如果回复携带交互上下文，使用本次提交的选中节点和版本等信息
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if reply.context is not None:
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data["context"] = reply.context.model_dump(mode="json")
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# 重新校验合并后的数据并构建上下文，校验失败时向上抛出 ValidationError
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context = InputContext.model_validate(data)
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# 保存新上下文并清空已消费的回复，避免后续重复合并
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updated_state["input_context"] = context
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updated_state["clarification_reply"] = None
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# 清空旧意图、需求和规划，让后续节点根据补充信息重新推导
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# LangGraph 的状态合并不会删除省略字段，因此需要显式赋空值
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updated_state["intent_decision"] = None
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updated_state["intent"] = None
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updated_state["requirement"] = None
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updated_state["requirement_outcome"] = None
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updated_state["notice"] = None
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updated_state["offer"] = None
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updated_state["accepted_offer"] = None
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updated_state["change_scope"] = None
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updated_state["screen_plan"] = None
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updated_state["component_resources"] = None
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# 清空旧动作及其校验、模拟结果，避免复用补充需求前的处理结果
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updated_state["actions"] = None
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updated_state["validation_passed"] = None
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updated_state["validation_errors"] = []
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updated_state["simulated_screen"] = None
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# 重置自动修正次数和失败信息，让本轮处理重新计算重试次数
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updated_state["retry_count"] = 0
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updated_state["repair_plan"] = None
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updated_state["failure_reason"] = None
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# 清空上一轮澄清问题和回答，恢复任务处理状态
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updated_state["clarification"] = None
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updated_state["answer"] = None
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updated_state["status"] = "running"
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# 返回澄清恢复后的状态，不再执行下方首次请求的初始化逻辑
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return updated_state
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# 没有澄清回复时，按首次请求校验原始输入，并深拷贝隔离提交时的快照
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context = InputContext.model_validate(state["request"]).model_copy(deep=True)
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# 保存校验后的上下文，供后续节点统一读取
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updated_state["input_context"] = context
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# 初始化自动修正次数，并清空修正建议和失败原因
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updated_state["retry_count"] = 0
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updated_state["repair_plan"] = None
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updated_state["failure_reason"] = None
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# 首次请求进入处理状态，恢复澄清时也使用同一状态
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updated_state["status"] = "running"
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# 返回初始化后的状态，由图接续执行后续节点
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return updated_state
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