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ThearchyHelios
625 lines
24 KiB
Python
625 lines
24 KiB
Python
from __future__ import annotations
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import asyncio
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import contextlib
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from datetime import datetime
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from typing import Any
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from urllib.parse import unquote
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from fastapi import APIRouter, Depends, Header, HTTPException, Query, WebSocket, WebSocketDisconnect
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from pydantic import BaseModel, Field
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from sqlalchemy import select
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from sqlalchemy.ext.asyncio import AsyncSession
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from app.api.coded import CodedHTTPException
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from app.core.bus import bus
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from app.db.base import SessionLocal, get_session
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from app.db.models import Approval, Artifact, Run, RunEvent
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# 发起规则和发起前检查绑定的工具搬到了 engine/launch.py。这几个名字以前从这里导入，照旧可用
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from app.engine.launch import ( # noqa: F401
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TOOL_MISSING, LaunchRefused, launch_run, missing_tools, node_setting, tool_bindings,
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)
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from app.engine.runner import run_manager
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router = APIRouter(prefix="/api/runs", tags=["runs"])
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def actor_of(header: str | None) -> str | None:
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"""请求头 X-Actor 里的署名（设置页填的那个），没填就是 None。
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浏览器的请求头只能是 Latin-1：中文署名原样放进去，fetch 直接抛错、整个请求
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发不出去。所以前端按 encodeURIComponent 编码后发，这里解回来；老客户端发的
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纯 ASCII 署名解码前后一样。
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"""
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value = unquote((header or "").strip()).strip()
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return value[:100] or None
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class StartRunIn(BaseModel):
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workflow_id: str | None = None
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graph: dict[str, Any] | None = None # 直接跑一张未保存的图（画布上的"试运行"）
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input: dict[str, Any] = Field(default_factory=dict)
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# 不传就取设置里的运行默认值（settings.resolve_run_scope）
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memory_scope: str | None = None
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collection: str | None = None
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# formal：从已发布的不可变版本发起，可复现可出具；exploratory：随便玩
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run_class: str = "exploratory"
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version: int | None = None # formal 时可指定版本，默认用已发布版本
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class RunOut(BaseModel):
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id: str
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workflow_id: str | None
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workflow_name: str
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status: str
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input: dict[str, Any]
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output: dict[str, Any]
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error: str | None
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usage: dict[str, Any]
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run_class: str | None = "exploratory"
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version: int | None = None
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version_hash: str | None = None
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manifest_hash: str | None = None
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#: 封存到了哪一条事件。为空 = 还没封存（没跑完或停在审批）
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manifest_seq: int | None = None
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started_by: str | None = None
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#: 失败时能定位到的节点
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error_node_id: str | None = None
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#: 发起时实际生效的记忆域和知识库
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memory_scope: str | None = None
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collection: str | None = None
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#: 发起它的定时任务。为空 = 手动发起
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schedule_id: str | None = None
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# 时间一律带时区（db.base.UTCDateTime 读出来就是 UTC aware）
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created_at: Any = None
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started_at: Any = None
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finished_at: Any = None
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model_config = {"from_attributes": True}
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@router.post("", response_model=RunOut, status_code=201)
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async def start_run(
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payload: StartRunIn,
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session: AsyncSession = Depends(get_session),
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x_actor: str | None = Header(default=None),
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) -> Run:
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"""发起规则全在 engine/launch.py（定时任务到点发起也用它），这里只把拒绝换回 HTTP 响应。"""
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try:
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return await launch_run(
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session,
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workflow_id=payload.workflow_id,
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graph=payload.graph,
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input_payload=payload.input,
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memory_scope=payload.memory_scope,
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collection=payload.collection,
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run_class=payload.run_class,
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version=payload.version,
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actor=actor_of(x_actor),
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)
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except LaunchRefused as e:
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raise _refused(e) from e
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def _refused(e: LaunchRefused) -> HTTPException:
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"""发起被拒的 HTTP 响应，和规则搬去 engine/launch.py 之前逐字相同：带机器码的回 {detail, code}，
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不带的回 {detail}。"""
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if e.code:
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return CodedHTTPException(e.status_code, e.message, e.code)
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return HTTPException(e.status_code, e.message)
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#: workflow_id 取这个值时只要没挂在任何工作流上的运行：画布上没保存就跑的临时图，
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#: 以及工作流被删掉之后留下来的运行（外键是 SET NULL）
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UNSAVED = "__none__"
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@router.get("", response_model=list[RunOut])
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async def list_runs(
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workflow_id: str | None = Query(default=None, description=f"{UNSAVED} 表示没保存的工作流"),
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status: str | None = Query(default=None, description="逗号分隔，如 failed,cancelled"),
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run_class: str | None = None,
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q: str | None = Query(default=None, description="按工作流名模糊匹配"),
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schedule_id: str | None = Query(default=None, description="只要这个定时任务发起的运行"),
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limit: int = Query(default=50, ge=1, le=200),
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before: datetime | None = Query(default=None, description="翻页游标：只要 created_at 早于它的"),
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session: AsyncSession = Depends(get_session),
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) -> list[Run]:
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"""运行列表，新的在前。
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以前只有 limit：待审批的运行排在第 145 位，列表只取 100 条，点了徽标也找不到它。
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筛选都走服务端，翻页用 created_at 做游标（before 传上一页最后一条的 created_at）。
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"""
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stmt = select(Run).order_by(Run.created_at.desc()).limit(limit)
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if workflow_id == UNSAVED:
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stmt = stmt.where(Run.workflow_id.is_(None))
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elif workflow_id:
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stmt = stmt.where(Run.workflow_id == workflow_id)
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if statuses := _csv(status):
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stmt = stmt.where(Run.status.in_(statuses))
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if classes := _csv(run_class):
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stmt = stmt.where(Run.run_class.in_(classes))
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if q and q.strip():
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stmt = stmt.where(Run.workflow_name.ilike(f"%{_like(q.strip())}%", escape="\\"))
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if schedule_id:
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stmt = stmt.where(Run.schedule_id == schedule_id)
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if before is not None:
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stmt = stmt.where(Run.created_at < before)
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return list((await session.execute(stmt)).scalars())
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def _csv(value: str | None) -> list[str]:
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return [v.strip() for v in (value or "").split(",") if v.strip()]
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def _like(text: str) -> str:
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"""用户输入里的 % 和 _ 按字面匹配，不当通配符。"""
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return text.replace("\\", "\\\\").replace("%", "\\%").replace("_", "\\_")
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@router.get("/{run_id}", response_model=RunOut)
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async def get_run(run_id: str, session: AsyncSession = Depends(get_session)) -> RunOut:
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run = await session.get(Run, run_id)
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if not run:
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raise HTTPException(404, "运行记录不存在")
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out = RunOut.model_validate(run)
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if out.status == "failed" and not out.error_node_id:
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# 加这一列之前失败的老运行：从事件里找最后一个失败的节点
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out.error_node_id = (await session.execute(
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select(RunEvent.node_id)
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.where(RunEvent.run_id == run_id, RunEvent.type == "node.failed")
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.order_by(RunEvent.seq.desc()).limit(1)
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)).scalar_one_or_none()
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return out
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@router.get("/{run_id}/graph")
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async def get_run_graph(run_id: str, session: AsyncSession = Depends(get_session)) -> dict[str, Any]:
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"""运行时的那张图（快照），不是工作流现在的样子。回放历史运行时画布照它画。"""
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run = await session.get(Run, run_id)
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if not run:
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raise HTTPException(404, "运行记录不存在")
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return {"graph": run.graph or {}, "workflow_id": run.workflow_id, "version": run.version}
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@router.get("/{run_id}/events")
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async def get_events(
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run_id: str,
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after: int = 0,
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session: AsyncSession = Depends(get_session),
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) -> list[dict[str, Any]]:
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"""拉历史事件。刷新页面后重建时间线用这个，再接 WebSocket 续上实时流。"""
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rows = await session.execute(
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select(RunEvent)
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.where(RunEvent.run_id == run_id, RunEvent.seq > after)
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.order_by(RunEvent.seq)
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)
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return [
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{
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"id": e.id,
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"run_id": e.run_id,
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"seq": e.seq,
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"type": e.type,
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"node_id": e.node_id,
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"ts": e.ts,
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"data": e.data,
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}
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for e in rows.scalars()
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]
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@router.get("/{run_id}/artifacts")
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async def list_artifacts(
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run_id: str, session: AsyncSession = Depends(get_session)
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) -> list[dict[str, Any]]:
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"""这次运行产出的全部工件引用。审阅出具物时从这里下钻到完整证据。"""
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rows = await session.execute(
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select(Artifact).where(Artifact.run_id == run_id).order_by(Artifact.created_at)
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)
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return [
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{
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"id": a.id,
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"kind": a.kind,
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"node_id": a.node_id,
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"size": a.size,
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"meta": a.meta,
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"created_at": a.created_at.isoformat() if a.created_at else None,
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}
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for a in rows.scalars()
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]
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@router.post("/{run_id}/cancel")
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async def cancel_run(run_id: str, x_actor: str | None = Header(default=None)) -> dict[str, Any]:
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"""停止一次运行。status 是 stopping（正在执行的，取消已发出，稍后收到 run.cancelled）
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或 cancelled（停在审批上、或服务重启挂起的，已经收成终态，待审批一并关闭）。"""
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outcome = await run_manager.cancel(run_id, actor=actor_of(x_actor))
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if outcome is None:
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async with SessionLocal() as session:
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run = await session.get(Run, run_id)
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if run is None:
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raise HTTPException(404, "运行记录不存在")
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raise HTTPException(409, _cannot_cancel(run.status))
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return {"ok": True, "status": outcome}
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def _cannot_cancel(status: str) -> str:
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return {
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"succeeded": "这次运行已完成，没有要停止的。",
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"failed": "这次运行已失败结束，没有要停止的；如需继续，请点「继续运行」。",
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"cancelled": "这次运行已取消。",
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}.get(status, "这次运行已不在执行中（可能刚结束，或服务重启过），无需停止。请刷新页面查看最新状态")
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class ResumeIn(BaseModel):
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response: Any = None
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approval_id: str | None = None
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def _missing(e: KeyError) -> HTTPException:
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# str(KeyError) 会带上 repr 的引号，界面上就成了 "'运行记录不存在'"
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return HTTPException(404, str(e.args[0]) if e.args else "运行记录不存在")
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@router.post("/{run_id}/resume", response_model=RunOut)
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async def resume_run(
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run_id: str, payload: ResumeIn, x_actor: str | None = Header(default=None)
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) -> Run:
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try:
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# approval_id 以前定义了却从没传下去——一次运行里有多条待审批时，
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# 引擎无从知道这次回复的是哪一条
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return await run_manager.resume(
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run_id, payload.response,
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approval_id=payload.approval_id,
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actor=actor_of(x_actor),
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)
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except KeyError as e:
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raise _missing(e) from e
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except ValueError as e:
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raise HTTPException(409, str(e)) from e
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class ContinueIn(BaseModel):
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"""接着跑。graph 只能带改过配置的同一张图，结构必须一致。"""
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graph: dict[str, Any] | None = None
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@router.post("/{run_id}/continue", response_model=RunOut)
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async def continue_run(
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run_id: str, payload: ContinueIn, x_actor: str | None = Header(default=None)
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) -> Run:
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"""从失败的节点接着跑，前面跑过的不重来。
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和 /resume 不是一回事：那条回复人工审批，这条是真的挂了（status=failed），
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或者被服务重启打断、没有在等谁的 interrupted。挡住前者的原来只是 resume 里的
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一行状态判定，而 checkpoint 一直都在——改个模型 id 就得把前面两分钟的取数
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重跑一遍，纯属白等。
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"""
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try:
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return await run_manager.continue_failed(
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run_id, graph=payload.graph, actor=actor_of(x_actor),
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)
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except KeyError as e:
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raise _missing(e) from e
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except ValueError as e:
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raise HTTPException(409, str(e)) from e
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@router.get("/{run_id}/state")
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async def get_state(run_id: str) -> dict[str, Any]:
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"""读取 checkpoint 里的当前状态。调试中断中的 run 时很有用。"""
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from app.engine.compiler import compile_graph
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from app.engine.context import RunContext
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from app.engine.schema import GraphSpec
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async with SessionLocal() as session:
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run = await session.get(Run, run_id)
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if not run:
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raise HTTPException(404, "运行记录不存在")
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spec = GraphSpec.model_validate(run.graph)
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app = compile_graph(spec, RunContext(run_id=run_id, thread_id=run_id, spec=spec)).compile(
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checkpointer=run_manager.checkpointer
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)
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snapshot = await app.aget_state({"configurable": {"thread_id": run_id}})
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values = dict(snapshot.values or {})
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values.pop("messages", None) # 消息对象不好直接序列化，前端也用不到
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return {
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"values": _jsonable(values),
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"next": list(snapshot.next or ()),
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"interrupts": [
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{"id": getattr(i, "id", None), "value": _jsonable(getattr(i, "value", None))}
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for i in (snapshot.interrupts or ())
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],
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}
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@router.get("/{run_id}/verify")
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async def verify_run(run_id: str) -> dict[str, Any]:
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"""核对事件流和封存时的清单哈希是否一致：事后被改过、删过、插过都会对不上。"""
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from app.engine.runner import verify_manifest
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try:
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return await verify_manifest(run_id)
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except KeyError as e:
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raise _missing(e) from e
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@router.get("/{run_id}/history")
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async def get_history(run_id: str, limit: int = 50) -> list[dict[str, Any]]:
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"""checkpoint 历史 —— 可以看到每一步之后的状态快照，用来做时间旅行式调试。"""
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from app.engine.compiler import compile_graph
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from app.engine.context import RunContext
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from app.engine.schema import GraphSpec
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async with SessionLocal() as session:
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run = await session.get(Run, run_id)
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if not run:
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raise HTTPException(404, "运行记录不存在")
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spec = GraphSpec.model_validate(run.graph)
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app = compile_graph(spec, RunContext(run_id=run_id, thread_id=run_id, spec=spec)).compile(
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checkpointer=run_manager.checkpointer
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)
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out: list[dict[str, Any]] = []
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async for snapshot in app.aget_state_history({"configurable": {"thread_id": run_id}}):
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values = dict(snapshot.values or {})
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values.pop("messages", None)
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out.append(
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{
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"checkpoint_id": snapshot.config.get("configurable", {}).get("checkpoint_id"),
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"next": list(snapshot.next or ()),
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"created_at": snapshot.created_at,
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"trail": _jsonable(values.get("trail") or [])[-1:],
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"nodes_done": list((values.get("nodes") or {}).keys()),
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}
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)
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if len(out) >= limit:
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break
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return out
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@router.delete("/{run_id}", status_code=204)
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async def delete_run(
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run_id: str, force: bool = False, session: AsyncSession = Depends(get_session)
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) -> None:
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"""删除运行记录。运行记录是出具的追溯依据，两种情况要拦：
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- 还在跑的：删了会留下没人管的执行任务，它还会往一条不存在的记录里写事件；
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- 封存过的正式运行：删掉之后清单再也无法核对。确实要删，带 force=true。
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"""
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run = await session.get(Run, run_id)
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if not run:
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raise HTTPException(404, "运行记录不存在")
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if run.status in ("queued", "running") or run_manager.is_active(run_id):
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raise HTTPException(409, "这次运行仍在进行，现在删除会留下无人管理的后台任务。请先停止运行，再删除")
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if run.run_class == "formal" and run.manifest_hash and not force:
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raise HTTPException(
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409,
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"这是一次已封存的正式运行，是出具结果的追溯凭证。删除后其事件和工件将一并删除，"
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"封存清单无法再核对。如仍要删除，请选择「强制删除」",
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)
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await session.delete(run)
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await session.commit()
|
||
|
||
|
||
# --------------------------------------------------------------------------
|
||
# 实时事件流
|
||
# --------------------------------------------------------------------------
|
||
|
||
|
||
#: 不在进行中的状态：没有后续事件会来（interrupted 要等人回复，恢复会新开一段
|
||
#: 执行，客户端到时候重新接）
|
||
_SETTLED = ("succeeded", "failed", "cancelled", "interrupted")
|
||
|
||
|
||
@router.websocket("/{run_id}/stream")
|
||
async def stream_run(websocket: WebSocket, run_id: str) -> None:
|
||
"""把一次运行的事件推给前端。
|
||
|
||
先补历史再接实时，所以中途打开页面、或者刷新之后，时间线都是完整的。
|
||
运行一旦不在进行中，补完历史就发一条 stream.end（data.status 是当时的状态）
|
||
再关掉——interrupted 也发。以前停在审批或服务重启挂起的运行什么都不发，
|
||
客户端一直重连、一直以为它还在跑。
|
||
"""
|
||
await websocket.accept()
|
||
after = int(websocket.query_params.get("after", 0) or 0)
|
||
|
||
# 先占订阅位，再读历史。反过来的话，两步之间图正好跑出来的事件既不在
|
||
# 历史里、也不在实时流里——永远丢了。实测就是这样：一次跑图的开头
|
||
# 两三条 node.started/node.finished 消失，界面上表现为某个节点永远
|
||
# 在转圈、它的子步骤跑到了顶层。
|
||
subscription = bus.attach(run_id)
|
||
try:
|
||
last_seq, run = await _replay(websocket, run_id, after)
|
||
if run is not None and run.status in _SETTLED and run_manager.is_active(run_id):
|
||
# 状态已经落了、执行任务还在收尾（终态事件、封存）：等它收完，把这期间
|
||
# 落库的事件补上，按最终状态收尾。否则会在 run.finished 之前就宣布结束
|
||
await run_manager.wait_idle(run_id)
|
||
last_seq, run = await _replay(websocket, run_id, last_seq)
|
||
|
||
if run is None or run.status in _SETTLED:
|
||
await _end(websocket, run.status if run else None)
|
||
return
|
||
|
||
# 占位期间攒下的那几条历史里也有，按 seq 滤掉，否则前端同一步收两遍
|
||
pump = asyncio.create_task(_pump(websocket, subscription.stream(after=last_seq), run_id))
|
||
try:
|
||
# 客户端断开时读操作会抛异常，用它来结束这条连接
|
||
while True:
|
||
await websocket.receive_text()
|
||
except WebSocketDisconnect:
|
||
pass
|
||
finally:
|
||
pump.cancel()
|
||
with contextlib.suppress(asyncio.CancelledError):
|
||
await pump
|
||
except WebSocketDisconnect:
|
||
return
|
||
except Exception: # noqa: BLE001
|
||
with contextlib.suppress(Exception):
|
||
await websocket.close()
|
||
finally:
|
||
subscription.close()
|
||
|
||
|
||
async def _replay(websocket: WebSocket, run_id: str, after: int) -> tuple[int, Run | None]:
|
||
"""把 seq > after 的历史事件发出去，顺带取回运行当前的状态。"""
|
||
last_seq = after
|
||
async with SessionLocal() as session:
|
||
rows = await session.execute(
|
||
select(RunEvent)
|
||
.where(RunEvent.run_id == run_id, RunEvent.seq > after)
|
||
.order_by(RunEvent.seq)
|
||
)
|
||
for event in rows.scalars():
|
||
last_seq = max(last_seq, event.seq or 0)
|
||
await websocket.send_json(
|
||
{
|
||
"seq": event.seq,
|
||
"type": event.type,
|
||
"node_id": event.node_id,
|
||
"ts": event.ts,
|
||
"data": event.data,
|
||
"replay": True,
|
||
}
|
||
)
|
||
run = await session.get(Run, run_id)
|
||
return last_seq, run
|
||
|
||
|
||
async def _end(websocket: WebSocket, status: str | None) -> None:
|
||
# 顶层的 status 留给老客户端；新口径读 data.status
|
||
await websocket.send_json({"type": "stream.end", "status": status, "data": {"status": status}})
|
||
await websocket.close()
|
||
|
||
|
||
async def _pump(websocket: WebSocket, stream: Any, run_id: str) -> None:
|
||
try:
|
||
async for event in stream:
|
||
await websocket.send_json(event.to_wire())
|
||
# 实时流走完 = 运行到了终态，或者关停时挂起了：补一条结束标记再关，
|
||
# 客户端不用靠猜，也不会对着一条已经结束的运行无限重连
|
||
async with SessionLocal() as session:
|
||
run = await session.get(Run, run_id)
|
||
await _end(websocket, run.status if run else None)
|
||
except (WebSocketDisconnect, RuntimeError):
|
||
return
|
||
|
||
|
||
# --------------------------------------------------------------------------
|
||
# 审批
|
||
# --------------------------------------------------------------------------
|
||
|
||
approvals_router = APIRouter(prefix="/api/approvals", tags=["approvals"])
|
||
|
||
|
||
class ApprovalOut(BaseModel):
|
||
id: str
|
||
run_id: str
|
||
node_id: str
|
||
mode: str
|
||
title: str
|
||
payload: dict[str, Any]
|
||
status: str
|
||
response: dict[str, Any]
|
||
created_at: Any = None
|
||
#: 谁批的：设置里的署名（请求头 X-Actor）。没署名就是 null，由前端写「未署名」
|
||
resolved_by: str | None = None
|
||
resolved_at: Any = None
|
||
# 下面几项来自所属的运行。全局待办列表要拼得出一行像样的字：
|
||
# 哪个工作流、卡在哪个节点、运行现在什么状态
|
||
workflow_id: str | None = None
|
||
workflow_name: str | None = None
|
||
node_label: str | None = None
|
||
run_status: str | None = None
|
||
run_class: str | None = None
|
||
|
||
|
||
@approvals_router.get("", response_model=list[ApprovalOut])
|
||
async def list_approvals(
|
||
status: str = Query(default="pending", description="pending / resolved / all，可逗号分隔"),
|
||
run_id: str | None = None,
|
||
limit: int = Query(default=100, ge=1, le=500),
|
||
session: AsyncSession = Depends(get_session),
|
||
) -> list[ApprovalOut]:
|
||
stmt = (
|
||
select(Approval, Run)
|
||
.join(Run, Run.id == Approval.run_id, isouter=True)
|
||
.order_by(Approval.created_at.desc())
|
||
.limit(limit)
|
||
)
|
||
if status != "all" and (statuses := _csv(status)):
|
||
stmt = stmt.where(Approval.status.in_(statuses))
|
||
if run_id:
|
||
stmt = stmt.where(Approval.run_id == run_id)
|
||
out: list[ApprovalOut] = []
|
||
for approval, run in (await session.execute(stmt)).all():
|
||
item = ApprovalOut.model_validate(approval, from_attributes=True)
|
||
if run is not None:
|
||
item.workflow_id = run.workflow_id
|
||
item.workflow_name = run.workflow_name
|
||
item.run_status = run.status
|
||
item.run_class = run.run_class
|
||
item.node_label = _node_label(run.graph, approval.node_id)
|
||
out.append(item)
|
||
return out
|
||
|
||
|
||
def _node_label(graph: dict[str, Any] | None, node_id: str) -> str | None:
|
||
for n in (graph or {}).get("nodes") or []:
|
||
if isinstance(n, dict) and n.get("id") == node_id:
|
||
return ((n.get("data") or {}).get("label")) or node_id
|
||
return None
|
||
|
||
|
||
class DecideIn(BaseModel):
|
||
approved: bool = True
|
||
note: str = ""
|
||
value: Any = None
|
||
args: dict[str, Any] | None = None
|
||
|
||
|
||
@approvals_router.post("/{approval_id}/decide", response_model=RunOut)
|
||
async def decide(
|
||
approval_id: str,
|
||
payload: DecideIn,
|
||
session: AsyncSession = Depends(get_session),
|
||
x_actor: str | None = Header(default=None),
|
||
) -> Run:
|
||
approval = await session.get(Approval, approval_id)
|
||
if not approval:
|
||
raise HTTPException(404, "审批记录不存在，所属的运行可能已被删除")
|
||
if approval.status != "pending":
|
||
raise HTTPException(409, "这条审批已处理过，请刷新页面查看最新状态")
|
||
|
||
# 责任归属先落库再恢复执行——恢复失败也要留下"谁试图批的"
|
||
approval.resolved_by = actor_of(x_actor)
|
||
await session.commit()
|
||
|
||
response: dict[str, Any] = {"approved": payload.approved, "note": payload.note}
|
||
if payload.value is not None:
|
||
response["value"] = payload.value
|
||
if payload.args is not None:
|
||
response["args"] = payload.args
|
||
|
||
try:
|
||
return await run_manager.resume(
|
||
approval.run_id, response,
|
||
approval_id=approval.id,
|
||
actor=approval.resolved_by,
|
||
)
|
||
except ValueError as e:
|
||
raise HTTPException(409, str(e)) from e
|
||
|
||
|
||
def _jsonable(value: Any) -> Any:
|
||
if isinstance(value, dict):
|
||
return {str(k): _jsonable(v) for k, v in value.items()}
|
||
if isinstance(value, (list, tuple)):
|
||
return [_jsonable(v) for v in value]
|
||
if isinstance(value, (str, int, float, bool)) or value is None:
|
||
return value
|
||
return str(value)
|