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ThearchyHelios
66b8969bc5
这套编排靠 {{ }} 串数据流，而模板取不到值时**渲染成空字符串**
（resolve_path 返回 None → _stringify → ""）。那是为了让半成品的图也能跑，
代价是：拼错一个变量名不报错、不警告、不留任何痕迹——下游拿到一段空文本，
然后模型基于空内容一本正经地编一段回答出来。这是这套东西最大的调试黑洞，
而界面上此前没有任何地方提过它。
app/engine/variables.py 做纯静态分析（不用跑图、不用有运行记录——用户在
编排到一半时最需要它，而那时候还没有任何一次运行可看）：
- 产出侧：input 字段、各节点的 assign_to、每个节点的 nodes.<id>
- 引用侧：递归扫所有配置字符串（output.fields[].value、code 的 files 都是
嵌套的，只扫顶层等于没扫），认得过滤器和下标
- 三类问题：
· 引用了没人产出的 —— 十有八九是拼错，用 difflib 给出"是不是想写…"
· 引用早于产出 —— 变量确实存在、名字也对，但那一步在这之后才跑，这里
取到的是空。这类最难查，因为表里查得到
· 产出了没人用 —— 只报 info，不拦着跑
前两类接进 validate_graph，画布上直接标红/标黄。另外开了
POST /api/workflows/variables 返回完整的变量表（谁产出、谁在哪个字段引用），
给接下来的变量表界面和输入补全用。
tests/test_variables.py 8 条，包括循环图不死循环（loop 的 body 连回自身很
常见）、节点读自己上一轮写的变量不该误报。
311 lines
10 KiB
Python
311 lines
10 KiB
Python
from __future__ import annotations
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from typing import Any
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from fastapi import APIRouter, Depends, Header, HTTPException
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from pydantic import BaseModel, Field
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from sqlalchemy import func, select
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from sqlalchemy.ext.asyncio import AsyncSession
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from app.core.artifact_store import graph_hash
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from app.db.base import get_session
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from app.db.models import Run, Workflow, WorkflowVersion
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from app.engine.governance import lint_for_publish
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from app.engine.schema import GraphSpec, validate_graph
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router = APIRouter(prefix="/api/workflows", tags=["workflows"])
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class WorkflowIn(BaseModel):
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name: str = Field(min_length=1, max_length=200)
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description: str = ""
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graph: dict[str, Any] = Field(default_factory=dict)
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tags: list[str] = Field(default_factory=list)
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class WorkflowPatch(BaseModel):
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name: str | None = None
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description: str | None = None
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graph: dict[str, Any] | None = None
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tags: list[str] | None = None
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note: str = ""
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class WorkflowOut(BaseModel):
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id: str
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name: str
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description: str
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graph: dict[str, Any]
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tags: list[str]
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version: int
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is_template: bool
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status: str = "draft"
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published_version: int | None = None
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created_at: Any = None
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updated_at: Any = None
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run_count: int = 0
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model_config = {"from_attributes": True}
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@router.get("", response_model=list[WorkflowOut])
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async def list_workflows(session: AsyncSession = Depends(get_session)) -> list[WorkflowOut]:
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rows = list(
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(await session.execute(select(Workflow).order_by(Workflow.updated_at.desc()))).scalars()
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)
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counts = dict(
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(await session.execute(select(Run.workflow_id, func.count(Run.id)).group_by(Run.workflow_id))).all()
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)
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out: list[WorkflowOut] = []
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for row in rows:
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item = WorkflowOut.model_validate(row)
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item.run_count = counts.get(row.id, 0)
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out.append(item)
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return out
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@router.post("", response_model=WorkflowOut, status_code=201)
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async def create_workflow(
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payload: WorkflowIn, session: AsyncSession = Depends(get_session)
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) -> Workflow:
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workflow = Workflow(
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name=payload.name,
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description=payload.description,
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graph=payload.graph,
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tags=payload.tags,
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)
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session.add(workflow)
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await session.flush()
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session.add(
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WorkflowVersion(workflow_id=workflow.id, version=1, graph=payload.graph,
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graph_hash=graph_hash(payload.graph), note="初始版本")
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)
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await session.commit()
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await session.refresh(workflow)
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return workflow
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@router.get("/{workflow_id}", response_model=WorkflowOut)
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async def get_workflow(
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workflow_id: str, session: AsyncSession = Depends(get_session)
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) -> Workflow:
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workflow = await session.get(Workflow, workflow_id)
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if not workflow:
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raise HTTPException(404, "工作流不存在")
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return workflow
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@router.patch("/{workflow_id}", response_model=WorkflowOut)
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async def update_workflow(
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workflow_id: str, payload: WorkflowPatch, session: AsyncSession = Depends(get_session)
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) -> Workflow:
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workflow = await session.get(Workflow, workflow_id)
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if not workflow:
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raise HTTPException(404, "工作流不存在")
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if payload.name is not None:
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workflow.name = payload.name
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if payload.description is not None:
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workflow.description = payload.description
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if payload.tags is not None:
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workflow.tags = payload.tags
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if payload.graph is not None and payload.graph != workflow.graph:
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# 图有实际变化才留快照，避免改个名字就堆一堆版本
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workflow.graph = payload.graph
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workflow.version += 1
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session.add(
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WorkflowVersion(
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workflow_id=workflow.id,
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version=workflow.version,
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graph=payload.graph,
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graph_hash=graph_hash(payload.graph),
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note=payload.note,
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)
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)
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# status 说的是**当前画布**的状态，不是"这个工作流曾经发布过"。
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# 改完图还挂着 governed，界面上就会显示一张从未过闸的图是受管模板——
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# 已发布的那一版仍由 published_version 指着，formal 运行不受影响。
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if workflow.status in ("published", "governed"):
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workflow.status = "draft"
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await session.commit()
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await session.refresh(workflow)
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return workflow
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@router.delete("/{workflow_id}", status_code=204)
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async def delete_workflow(
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workflow_id: str, session: AsyncSession = Depends(get_session)
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) -> None:
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workflow = await session.get(Workflow, workflow_id)
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if not workflow:
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raise HTTPException(404, "工作流不存在")
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await session.delete(workflow)
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await session.commit()
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@router.post("/{workflow_id}/duplicate", response_model=WorkflowOut, status_code=201)
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async def duplicate_workflow(
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workflow_id: str, session: AsyncSession = Depends(get_session)
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) -> Workflow:
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source = await session.get(Workflow, workflow_id)
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if not source:
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raise HTTPException(404, "工作流不存在")
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copy = Workflow(
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name=f"{source.name} 副本",
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description=source.description,
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graph=source.graph,
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tags=list(source.tags or []),
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)
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session.add(copy)
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await session.commit()
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await session.refresh(copy)
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return copy
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class VersionOut(BaseModel):
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id: str
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version: int
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note: str
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created_at: Any = None
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model_config = {"from_attributes": True}
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@router.get("/{workflow_id}/versions", response_model=list[VersionOut])
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async def list_versions(
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workflow_id: str, session: AsyncSession = Depends(get_session)
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) -> list[WorkflowVersion]:
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rows = await session.execute(
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select(WorkflowVersion)
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.where(WorkflowVersion.workflow_id == workflow_id)
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.order_by(WorkflowVersion.version.desc())
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)
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return list(rows.scalars())
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@router.post("/{workflow_id}/versions/{version}/restore", response_model=WorkflowOut)
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async def restore_version(
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workflow_id: str, version: int, session: AsyncSession = Depends(get_session)
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) -> Workflow:
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workflow = await session.get(Workflow, workflow_id)
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if not workflow:
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raise HTTPException(404, "工作流不存在")
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snapshot = (
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await session.execute(
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select(WorkflowVersion).where(
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WorkflowVersion.workflow_id == workflow_id,
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WorkflowVersion.version == version,
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)
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)
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).scalar_one_or_none()
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if not snapshot:
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raise HTTPException(404, "版本不存在")
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workflow.graph = snapshot.graph
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workflow.version += 1
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session.add(
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WorkflowVersion(
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workflow_id=workflow.id,
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version=workflow.version,
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graph=snapshot.graph,
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graph_hash=graph_hash(snapshot.graph),
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note=f"回滚到 v{version}",
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)
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)
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await session.commit()
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await session.refresh(workflow)
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return workflow
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class PublishIn(BaseModel):
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level: str = "published" # published | governed
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version: int | None = None # 默认发布当前最新版本
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@router.post("/{workflow_id}/publish")
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async def publish_workflow(
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workflow_id: str,
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payload: PublishIn,
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session: AsyncSession = Depends(get_session),
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x_actor: str | None = Header(default=None),
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) -> dict[str, Any]:
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"""把某个版本立为正式版本。
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formal 运行只能从这里发布过的版本发起。governed 级别额外过治理 lint：
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错误会挡住发布——这就是"必经检查点"落地的地方。
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返回 200 + ok/issues 而不是抛错，让前端能把问题列表渲染出来。
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"""
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if payload.level not in ("published", "governed"):
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raise HTTPException(400, "level 只能是 published 或 governed")
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workflow = await session.get(Workflow, workflow_id)
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if not workflow:
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raise HTTPException(404, "工作流不存在")
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version = payload.version or workflow.version
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snapshot = (
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await session.execute(
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select(WorkflowVersion).where(
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WorkflowVersion.workflow_id == workflow_id,
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WorkflowVersion.version == version,
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)
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)
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).scalar_one_or_none()
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if not snapshot:
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raise HTTPException(404, f"版本 v{version} 不存在，先保存一次")
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try:
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spec = GraphSpec.model_validate(snapshot.graph)
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except Exception as e: # noqa: BLE001
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return {"ok": False, "issues": [{"level": "error", "message": f"图结构非法：{e}"}]}
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issues = [i.model_dump() for i in validate_graph(spec).issues]
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issues += [i.model_dump() for i in lint_for_publish(spec, level=payload.level).issues]
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if any(i["level"] == "error" for i in issues):
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return {"ok": False, "level": payload.level, "version": version, "issues": issues}
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if not snapshot.graph_hash:
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snapshot.graph_hash = graph_hash(snapshot.graph)
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workflow.status = payload.level
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workflow.published_version = version
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workflow.published_by = (x_actor or "").strip() or None
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await session.commit()
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return {
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"ok": True,
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"level": payload.level,
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"version": version,
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"graph_hash": snapshot.graph_hash,
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"published_by": workflow.published_by,
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"issues": issues, # 剩下的都是警告
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}
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class ValidateIn(BaseModel):
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graph: dict[str, Any]
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@router.post("/validate")
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async def validate(payload: ValidateIn) -> dict[str, Any]:
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"""画布上的实时校验。前端每次改动都会调它来标红。"""
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try:
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spec = GraphSpec.model_validate(payload.graph)
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except Exception as e: # noqa: BLE001
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return {"ok": False, "issues": [{"level": "error", "message": f"图结构非法：{e}"}]}
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result = validate_graph(spec)
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return result.model_dump()
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@router.post("/variables")
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async def variables(payload: ValidateIn) -> dict[str, Any]:
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"""这张图里有哪些变量、谁产出、谁引用。
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纯静态分析，不用跑图也不用有运行记录——用户在编排到一半时最需要它，
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而那时候还没有任何一次运行可看。运行期的实际取值由前端从事件里补上。
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"""
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from app.engine.variables import analyze
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try:
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spec = GraphSpec.model_validate(payload.graph)
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except Exception as e: # noqa: BLE001
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return {"variables": [], "issues": [{"level": "error", "message": f"图结构非法：{e}"}]}
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return analyze(spec).model_dump()
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