Files
AgentLab/backend/app/api/workflows.py
T
ThearchyHelios 587bf7e27c 第三波前两批:六个「看着成功其实没干活」的平台漏洞堵上,记录页能回放,管理页与画布收尾
起因是一次探索运行:Copilot 改节点时把工具绑定整份抹掉,agent 没有工具只能写「假设调用」,
校验节点的自动修复编出 total_count=0 让 schema 通过,协作成员把工具调用标记当文字输出了四轮,
轮数用完后节点把原话当成功结果交出去——运行标成已完成,数据库一次都没查。

平台可信度(先写失败测试)
- Copilot 修改节点改为合并:没写的字段保留,null 才删除;协作成员按名字合并。前后端同一套规则,
  工具集合变小时自查报警、改图回执列出变化
- 新校验规则:提示词点名了某个工具而节点没有绑定它,判错误,Copilot 自查会交回去修
- 校验修复只许改格式:冒出原文没有的值就判修复无效;修复这次模型调用计入用量
- 识别模型把工具调用写成文字的情况(DSML、<tool_call> 等标记):纠正一次,仍然如此就判失败并说明原因
- 协作团队用完轮数不再按成功交付:默认失败,可选降档,点出一次都没派到的成员
- 审批恢复后,同一节点里已经执行过的工具调用复用结果,不再重复执行

后端
- 查询时限交给数据库执行(Oracle call_timeout、PG statement_timeout、MySQL max_execution_time、
  SQLite progress handler),可按数据源配置;超时报错与实际耗时一致
- 等审批的运行可以真正取消;会话列表带最后一轮状态;测连接结果持久化;探查结构可只看不存;
  自定义工具可草稿试跑、写坏的参数定义保存时拒绝;MCP 服务改动后作废旧工具缓存;
  检索命中带贡献分解;重建索引在后台跑并报进度;报错统一收进 core/errors

前端
- 公共层:管理页共用件、失败说明(lib/explain)、健康状态进公共库;目录按表各自加载并有超时,
  一张表卡住不再拖垮整站;上传显示真实字节进度;离线横幅只播报不变的句子
- 画布:卡片只说游标所在的那一次执行;等审批时可放弃运行;团队收尾判定与未完成说清楚;
  回放用量取那一刻的值
- 编排页:Copilot 合并语义与工具变化回执;「用完轮数时」选项;正式运行期间锁住所有改图入口
- 回答流 / 问数据:新失败类型说人话并给下一步;画布与右栏互相定位;数据源范围、回收站、重新核对
- 记录页:「航迹」页签复用画布时间轴,可拖动回放、列出关键时刻;列表行带执行 / 等人 / 失败缩略条
- 外壳:统一的离开前确认(data router),导航、⌘K、快捷键、后退都会先问

验证(沙箱):tsc 干净,pytest 838 passed(两遍),14 个检查脚本中 13 个全绿;
check-ui 余 1 项旧断言(按旧日期格式找运行行),3c 更新。
2026-09-27 10:16:32 +08:00

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from __future__ import annotations
from typing import Any
from fastapi import APIRouter, Depends, Header, HTTPException
from pydantic import BaseModel, Field
from sqlalchemy import func, select
from sqlalchemy.ext.asyncio import AsyncSession
from app.core.errors import graph_error
from app.api.runs import actor_of
from app.core.artifact_store import graph_hash
from app.db.base import get_session
from app.db.models import Run, Workflow, WorkflowVersion
from app.engine.governance import lint_for_publish
from app.engine.schema import GraphSpec, validate_graph
router = APIRouter(prefix="/api/workflows", tags=["workflows"])
_GONE = "这个工作流不存在,可能已经被删了"
class WorkflowIn(BaseModel):
name: str = Field(min_length=1, max_length=200)
description: str = ""
graph: dict[str, Any] = Field(default_factory=dict)
tags: list[str] = Field(default_factory=list)
class WorkflowPatch(BaseModel):
name: str | None = None
description: str | None = None
graph: dict[str, Any] | None = None
tags: list[str] | None = None
note: str = ""
class WorkflowOut(BaseModel):
id: str
name: str
description: str
graph: dict[str, Any]
tags: list[str]
version: int
is_template: bool
status: str = "draft"
published_version: int | None = None
published_by: str | None = None
created_at: Any = None
updated_at: Any = None
run_count: int = 0
model_config = {"from_attributes": True}
@router.get("", response_model=list[WorkflowOut])
async def list_workflows(session: AsyncSession = Depends(get_session)) -> list[WorkflowOut]:
rows = list(
(await session.execute(select(Workflow).order_by(Workflow.updated_at.desc()))).scalars()
)
counts = dict(
(await session.execute(select(Run.workflow_id, func.count(Run.id)).group_by(Run.workflow_id))).all()
)
out: list[WorkflowOut] = []
for row in rows:
item = WorkflowOut.model_validate(row)
item.run_count = counts.get(row.id, 0)
out.append(item)
return out
@router.post("", response_model=WorkflowOut, status_code=201)
async def create_workflow(
payload: WorkflowIn, session: AsyncSession = Depends(get_session)
) -> Workflow:
workflow = Workflow(
name=payload.name,
description=payload.description,
graph=payload.graph,
tags=payload.tags,
)
session.add(workflow)
await session.flush()
session.add(
WorkflowVersion(workflow_id=workflow.id, version=1, graph=payload.graph,
graph_hash=graph_hash(payload.graph), note="初始版本")
)
await session.commit()
await session.refresh(workflow)
return workflow
@router.get("/{workflow_id}", response_model=WorkflowOut)
async def get_workflow(
workflow_id: str, session: AsyncSession = Depends(get_session)
) -> Workflow:
workflow = await session.get(Workflow, workflow_id)
if not workflow:
raise HTTPException(404, _GONE)
return workflow
@router.patch("/{workflow_id}", response_model=WorkflowOut)
async def update_workflow(
workflow_id: str, payload: WorkflowPatch, session: AsyncSession = Depends(get_session)
) -> Workflow:
workflow = await session.get(Workflow, workflow_id)
if not workflow:
raise HTTPException(404, _GONE)
if payload.name is not None:
workflow.name = payload.name
if payload.description is not None:
workflow.description = payload.description
if payload.tags is not None:
workflow.tags = payload.tags
if payload.graph is not None and payload.graph != workflow.graph:
# 图有实际变化才留快照,避免改个名字就堆一堆版本
workflow.graph = payload.graph
workflow.version += 1
session.add(
WorkflowVersion(
workflow_id=workflow.id,
version=workflow.version,
graph=payload.graph,
graph_hash=graph_hash(payload.graph),
note=payload.note,
)
)
# status 说的是**当前画布**的状态,不是"这个工作流曾经发布过"。
# 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——
# 已发布的那一版仍由 published_version 指着,formal 运行不受影响。
if workflow.status in ("published", "governed"):
workflow.status = "draft"
await session.commit()
await session.refresh(workflow)
return workflow
@router.delete("/{workflow_id}", status_code=204)
async def delete_workflow(
workflow_id: str, session: AsyncSession = Depends(get_session)
) -> None:
workflow = await session.get(Workflow, workflow_id)
if not workflow:
raise HTTPException(404, _GONE)
# 运行记录是 ON DELETE SET NULL:删掉工作流,已结束的运行留着、照样能核对封存;
# 还在跑的那次会失去归属,再也回不到它的画布,所以和删除运行记录一样先停再删
live = await session.scalar(
select(func.count()).select_from(Run).where(
Run.workflow_id == workflow_id, Run.status.in_(("queued", "running"))
)
)
if live:
raise HTTPException(409, f"这个工作流还有 {live} 次运行在执行,现在删除它们会失去归属。先停止运行,再删除")
await session.delete(workflow)
await session.commit()
@router.post("/{workflow_id}/duplicate", response_model=WorkflowOut, status_code=201)
async def duplicate_workflow(
workflow_id: str, session: AsyncSession = Depends(get_session)
) -> Workflow:
source = await session.get(Workflow, workflow_id)
if not source:
raise HTTPException(404, _GONE)
copy = Workflow(
name=f"{source.name} 副本",
description=source.description,
graph=source.graph,
tags=list(source.tags or []),
)
session.add(copy)
await session.commit()
await session.refresh(copy)
return copy
class VersionOut(BaseModel):
id: str
version: int
note: str
created_at: Any = None
model_config = {"from_attributes": True}
@router.get("/{workflow_id}/versions", response_model=list[VersionOut])
async def list_versions(
workflow_id: str, session: AsyncSession = Depends(get_session)
) -> list[WorkflowVersion]:
rows = await session.execute(
select(WorkflowVersion)
.where(WorkflowVersion.workflow_id == workflow_id)
.order_by(WorkflowVersion.version.desc())
)
return list(rows.scalars())
class VersionDetailOut(VersionOut):
workflow_id: str
graph: dict[str, Any]
graph_hash: str | None = None
#: 这一版入口节点声明的字段。正式运行跑的是已发布的那一版,表单得照它来填——
#: 画布上改过入口字段时,拿当前画布的字段去跑已发布版本会传错参数
input_fields: list[dict[str, Any]] = Field(default_factory=list)
published: bool = False
@router.get("/{workflow_id}/versions/{version}", response_model=VersionDetailOut)
async def get_version(
workflow_id: str, version: int, session: AsyncSession = Depends(get_session)
) -> VersionDetailOut:
"""取某一版的完整图。"""
workflow = await session.get(Workflow, workflow_id)
if not workflow:
raise HTTPException(404, _GONE)
snapshot = (
await session.execute(
select(WorkflowVersion).where(
WorkflowVersion.workflow_id == workflow_id,
WorkflowVersion.version == version,
)
)
).scalar_one_or_none()
if not snapshot:
raise HTTPException(404, f"「{workflow.name}」没有 v{version} 这个版本")
graph = snapshot.graph or {}
fields: list[dict[str, Any]] = []
for node in graph.get("nodes") or []:
if node.get("type") == "input":
fields.extend(
f for f in ((node.get("data") or {}).get("config") or {}).get("fields") or []
if isinstance(f, dict)
)
return VersionDetailOut(
id=snapshot.id, version=snapshot.version, note=snapshot.note,
created_at=snapshot.created_at, workflow_id=workflow_id, graph=graph,
graph_hash=snapshot.graph_hash or graph_hash(graph), input_fields=fields,
published=workflow.published_version == snapshot.version,
)
@router.post("/{workflow_id}/versions/{version}/restore", response_model=WorkflowOut)
async def restore_version(
workflow_id: str, version: int, session: AsyncSession = Depends(get_session)
) -> Workflow:
workflow = await session.get(Workflow, workflow_id)
if not workflow:
raise HTTPException(404, _GONE)
snapshot = (
await session.execute(
select(WorkflowVersion).where(
WorkflowVersion.workflow_id == workflow_id,
WorkflowVersion.version == version,
)
)
).scalar_one_or_none()
if not snapshot:
raise HTTPException(404, f"没有 v{version} 这个版本")
workflow.graph = snapshot.graph
workflow.version += 1
session.add(
WorkflowVersion(
workflow_id=workflow.id,
version=workflow.version,
graph=snapshot.graph,
graph_hash=graph_hash(snapshot.graph),
note=f"回滚到 v{version}",
)
)
await session.commit()
await session.refresh(workflow)
return workflow
class PublishIn(BaseModel):
level: str = "published" # published | governed
version: int | None = None # 默认发布当前最新版本
@router.post("/{workflow_id}/publish")
async def publish_workflow(
workflow_id: str,
payload: PublishIn,
session: AsyncSession = Depends(get_session),
x_actor: str | None = Header(default=None),
) -> dict[str, Any]:
"""把某个版本立为正式版本。
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:
错误会挡住发布——这就是"必经检查点"落地的地方。
返回 200 + ok/issues 而不是抛错,让前端能把问题列表渲染出来。
"""
if payload.level not in ("published", "governed"):
raise HTTPException(400, "发布档位只能选「已发布」或「受管」")
workflow = await session.get(Workflow, workflow_id)
if not workflow:
raise HTTPException(404, _GONE)
version = payload.version or workflow.version
snapshot = (
await session.execute(
select(WorkflowVersion).where(
WorkflowVersion.workflow_id == workflow_id,
WorkflowVersion.version == version,
)
)
).scalar_one_or_none()
if not snapshot:
raise HTTPException(404, f"没有 v{version} 这个版本:画布上的改动还没保存,先保存一次再发布")
try:
spec = GraphSpec.model_validate(snapshot.graph)
except Exception as e: # noqa: BLE001
return {"ok": False, "issues": [{"level": "error", "message": f"工作流的结构读不懂:{graph_error(e)}"}]}
issues = [i.model_dump() for i in validate_graph(spec).issues]
issues += [i.model_dump() for i in lint_for_publish(spec, level=payload.level).issues]
if any(i["level"] == "error" for i in issues):
return {"ok": False, "level": payload.level, "version": version, "issues": issues}
if not snapshot.graph_hash:
snapshot.graph_hash = graph_hash(snapshot.graph)
workflow.status = payload.level
workflow.published_version = version
workflow.published_by = actor_of(x_actor)
await session.commit()
return {
"ok": True,
"level": payload.level,
"version": version,
"graph_hash": snapshot.graph_hash,
"published_by": workflow.published_by,
"issues": issues, # 剩下的都是警告
}
class ValidateIn(BaseModel):
graph: dict[str, Any]
@router.post("/validate")
async def validate(payload: ValidateIn) -> dict[str, Any]:
"""画布上的实时校验。前端每次改动都会调它来标红。"""
try:
spec = GraphSpec.model_validate(payload.graph)
except Exception as e: # noqa: BLE001
return {"ok": False, "issues": [{"level": "error", "message": f"工作流的结构读不懂:{graph_error(e)}"}]}
result = validate_graph(spec)
return result.model_dump()
@router.post("/variables")
async def variables(payload: ValidateIn) -> dict[str, Any]:
"""这张图里有哪些变量、谁产出、谁引用。
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,
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。
"""
from app.engine.variables import analyze
try:
spec = GraphSpec.model_validate(payload.graph)
except Exception as e: # noqa: BLE001
return {"variables": [], "issues": [{"level": "error", "message": f"工作流的结构读不懂:{graph_error(e)}"}]}
return analyze(spec).model_dump()