Files
my-v0-server/app/processor/nodes/scope_node.py
T
2026-09-23 15:33:28 +08:00

110 lines
3.8 KiB
Python

"""判断需求涉及的范围、规划和资源需求"""
import json
from langchain_core.messages import HumanMessage, SystemMessage
from app.clients.llm import get_llm
from app.processor.base import BaseNode
from app.processor.state import QueryState
from app.prompt.scope import SCOPE_SYSTEM_PROMPT
from app.schemas.change_scope import ChangeScope
class ScopeNode(BaseNode):
name = "scope_node"
async def process(self, state: QueryState) -> QueryState:
requirement = state["requirement"]
if requirement.needs_clarification or requirement.intent not in (
"create_screen",
"modify_screen",
):
raise ValueError("ScopeNode 只处理信息完整的新建或修改需求")
context = state["input_context"]
llm_client = get_llm(ChangeScope)
scope = await llm_client.ainvoke(
[
SystemMessage(content=SCOPE_SYSTEM_PROMPT),
HumanMessage(
content=json.dumps(
{
"requirement": requirement.model_dump(mode="json"),
"input_context": context.model_dump(
mode="json", exclude_unset=True
),
},
ensure_ascii=False,
)
),
]
)
existing_ids = {node.id for node in context.screen.nodes}
if unknown_ids := set(scope.target_ids) - existing_ids:
raise ValueError(f"范围引用了不存在的节点: {sorted(unknown_ids)}")
required_ids = {
node_id for change in requirement.changes for node_id in change.target_ids
}
if missing_ids := required_ids - set(scope.target_ids):
raise ValueError(f"范围遗漏了需求中的节点: {sorted(missing_ids)}")
return {**state, "change_scope": scope}
if __name__ == "__main__":
import asyncio
from pydantic import BaseModel
from app.processor.nodes.input_node import InputNode
from app.schemas.requirement import Requirement
async def main():
# 直接提供已理解的需求,单独测试范围判断,仅需 LLM 配置
state: QueryState = {
"request": {
"prompt": "把销售额统计向右移动 50px,其他不变",
"screen": {
"canvas": {"width": 1920, "height": 1080},
"nodes": [
{
"id": "sales-chart",
"type": "bar-chart",
"name": "销售额统计",
"layout": {"x": 26, "y": 34.8, "width": 400, "height": 260},
}
],
},
}
}
state = InputNode().process(state)
state["requirement"] = Requirement(
intent="modify_screen",
goal="销售额统计向右移动 50px",
changes=[
{
"target_scope": "nodes",
"target_ids": ["sales-chart"],
"operation": "move",
"parameters": {"delta_x": 50},
}
],
needs_clarification=False,
constraints=["其他不变"],
)
node = ScopeNode()
final_state = await node.process(state)
print(
json.dumps(
{
key: value.model_dump(mode="json")
if isinstance(value, BaseModel)
else value
for key, value in final_state.items()
},
ensure_ascii=False,
indent=2,
)
)
asyncio.run(main())