498 lines
22 KiB
Python
498 lines
22 KiB
Python
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"""Native research execution: durable intent, finite reservations, existing simulation lane.
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Only this server-owned runner may use a saved flow authorization. Caller-supplied
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Backtest source fields are provenance, never a grant to execute automatically.
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"""
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import asyncio
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import logging
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from collections import defaultdict
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from fastapi import HTTPException
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from sqlalchemy import select
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from sqlalchemy.exc import SQLAlchemyError
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from ..backtests.contracts import ControlInput, StartInput
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from ..backtests.service import Backtests, uid
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from ..models import Account, ResearchFlowRun, ResearchStepRun, now
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from .assets import Assets
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from .evaluations import Evaluations
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from .experiments import Experiments
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from .model import request_model
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from .workflows import validate_graph
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from .workspace_contracts import AssetWrite, EvaluateInput, Expansion, Generation, TemplateSpec, WorkflowSpec
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logger = logging.getLogger(__name__)
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ACTIVE = ("queued", "running")
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DONE = ("completed", "skipped")
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def changed(run):
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run.updated_at = now()
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run.version += 1
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def halt(run, status, message):
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run.status, run.error = status, message
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changed(run)
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def mark_model_attempt(step, status, error=None):
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attempts = [dict(item) for item in step.output.get("model_attempts", [])]
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if attempts:
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attempts[-1] = {**attempts[-1], "status": status, "error": error}
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step.output = {**step.output, "model_attempts": attempts}
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async def locked_flow(db, run_id):
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# All paths that may start/control a Backtest acquire these locks in this order.
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await db.scalar(select(Account).where(Account.id == 1).with_for_update())
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row = await db.scalar(select(ResearchFlowRun).where(ResearchFlowRun.id == run_id).with_for_update())
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if not row:
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raise HTTPException(404, "研究运行不存在")
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return row
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async def control(db, run_id, body):
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run = await locked_flow(db, run_id)
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if run.version != body.version:
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raise HTTPException(409, "研究运行已变化，请刷新后重试")
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if run.status in ("completed", "stopped"):
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raise HTTPException(409, "已结束的研究不能恢复；请重新确认并启动新研究")
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if body.action == "resume" and run.status == "budget_exhausted":
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raise HTTPException(409, "预算已用尽；扩大预算需要重新确认并启动新研究")
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steps = list(await db.scalars(select(ResearchStepRun).where(ResearchStepRun.run_id == run_id)))
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if body.action == "resume" and any(step.status == "blocked" for step in steps):
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raise HTTPException(409, "候选校验未通过，不能跳过此步骤；请修正输入或模板后重新确认研究")
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for step in steps:
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if step.backtest_run_id and step.status not in DONE:
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backtest = await Backtests(db).run(step.backtest_run_id)
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if backtest["status"] not in ("completed", "completed_with_errors", "stopped"):
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if body.action != "resume" or backtest["control"] == "paused":
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await Backtests(db).control(
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step.backtest_run_id, ControlInput(action=body.action, version=backtest["version"])
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)
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if body.action == "resume" and step.status == "interrupted":
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# Reservations already spent are never refunded; retry needs a fresh call budget.
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step.status = "queued"
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run.status = {"pause": "paused", "stop": "stopped", "resume": "queued"}[body.action]
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run.error = None
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changed(run)
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class ResearchRuntime:
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def __init__(self, sessions, ai, runner):
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self.sessions, self.ai, self.runner = sessions, ai, runner
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self.tasks = {}
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self.locks = defaultdict(asyncio.Lock)
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self.wake = asyncio.Event()
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self.stopping = False
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self.loop_task = None
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async def recover(self):
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async with self.sessions.begin() as db:
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steps = list(await db.scalars(select(ResearchStepRun).where(ResearchStepRun.status == "running")))
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for step in steps:
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step.status, step.error = (
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"interrupted",
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"服务在模型步骤期间中断，已预留调用不退回；恢复后需要新的调用预算",
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)
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mark_model_attempt(step, "interrupted", step.error)
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run = await db.get(ResearchFlowRun, step.run_id)
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if run.status in ACTIVE:
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halt(run, "interrupted", step.error)
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# Durable preview/waiting steps reconcile their existing Backtest on the next tick.
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async def start(self):
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self.stopping = False
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await self.recover()
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self.loop_task = asyncio.create_task(self.loop())
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async def stop(self):
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self.stopping = True
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self.wake.set()
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if self.loop_task:
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await self.loop_task
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for task in self.tasks.values():
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task.cancel()
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await asyncio.gather(*self.tasks.values(), return_exceptions=True)
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self.tasks.clear()
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await self.recover()
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async def loop(self):
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while not self.stopping:
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try:
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await self.tick()
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except (SQLAlchemyError, OSError):
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logger.warning("Research runner waiting for database recovery")
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self.wake.clear()
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try:
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await asyncio.wait_for(self.wake.wait(), timeout=0.5)
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except TimeoutError:
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pass
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async def tick(self):
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for key, task in list(self.tasks.items()):
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if task.done():
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self.tasks.pop(key)
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try:
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task.result()
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except asyncio.CancelledError:
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pass
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except Exception:
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logger.warning("Research step interrupted; durable state retained")
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if self.stopping:
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return
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async with self.sessions() as db:
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ids = list(
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await db.scalars(
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select(ResearchFlowRun.id)
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.where(ResearchFlowRun.status.in_(ACTIVE))
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.order_by(ResearchFlowRun.created_at)
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.limit(20)
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)
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)
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for run_id in ids:
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if run_id not in self.tasks:
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self.tasks[run_id] = asyncio.create_task(self.advance(run_id))
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async def advance(self, run_id):
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async with self.locks[run_id]:
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try:
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model_work = await self.prepare(run_id)
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if model_work:
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step_id, context, revision = model_work
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result, evidence = await request_model(self.ai, context, TemplateSpec, revision)
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await self.finish_model(run_id, step_id, result, evidence)
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except HTTPException as exc:
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await self.fail(run_id, str(exc.detail))
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except asyncio.CancelledError:
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raise
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except Exception:
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await self.fail(run_id, "研究步骤执行中断，产物已保留；请检查配置并恢复")
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finally:
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self.runner.backtests.wake.set()
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async def fail(self, run_id, message):
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async with self.sessions.begin() as db:
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run = await locked_flow(db, run_id)
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steps = list(
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await db.scalars(
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select(ResearchStepRun).where(
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ResearchStepRun.run_id == run_id, ResearchStepRun.status == "running"
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)
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)
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)
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for step in steps:
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step.status, step.error = "interrupted", message
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mark_model_attempt(step, "interrupted", message)
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if run.status in ACTIVE:
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halt(run, "interrupted", message)
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async def prepare(self, run_id):
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async with self.sessions.begin() as db:
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run = await locked_flow(db, run_id)
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if run.status not in ACTIVE:
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return
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account = await db.get(Account, 1)
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if account.wq_user_id != run.authorization["account_id"]:
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raise HTTPException(409, "账户身份已变化，需重新确认研究授权")
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graph = WorkflowSpec.model_validate(run.definition)
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order = validate_graph(graph)
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by_id = {n.id: n for n in graph.nodes}
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rows = list(
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await db.scalars(
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select(ResearchStepRun).where(
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ResearchStepRun.run_id == run.id, ResearchStepRun.round == run.round
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)
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)
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)
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steps = {s.node_id: s for s in rows}
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if all(key in steps and steps[key].status in DONE for key in order):
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loop = next(
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(s for s in rows if by_id[s.node_id].type == "iterate" and s.status == "completed"), None
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)
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maximum = (
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min(run.authorization["budget"]["max_rounds"], by_id[loop.node_id].config["max_rounds"])
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if loop
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else 1
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)
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if loop and run.round < maximum:
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run.round += 1
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changed(run)
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else:
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halt(run, "completed", None)
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return
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for key in order:
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step = steps.get(key)
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if step and step.status in DONE:
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continue
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node = by_id[key]
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upstream_edges = [e for e in graph.edges if e.target == key]
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if any(e.source not in steps or steps[e.source].status not in DONE for e in upstream_edges):
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continue
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if step and step.status == "running":
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# An in-flight model step must only be completed by its owning worker.
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return
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if step is None:
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step = ResearchStepRun(
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id=uid(), run_id=run.id, node_id=key, round=run.round, status="queued", output={}
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)
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db.add(step)
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await db.flush()
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if step.status in ("interrupted", "blocked"):
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halt(run, "needs_review" if step.status == "blocked" else "interrupted", step.error)
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return
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run.status = "running"
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if step.status != "waiting":
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changed(run)
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upstream = [
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steps[e.source].output
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for e in upstream_edges
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if steps[e.source].status != "skipped"
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and (not e.branch or steps[e.source].output.get("verdict") == e.branch)
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]
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if upstream_edges and not upstream:
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step.status = "skipped"
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return
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data = upstream[0] if upstream else {}
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if node.type == "input":
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previous = (
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await db.scalar(
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select(ResearchStepRun).where(
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ResearchStepRun.run_id == run.id,
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ResearchStepRun.round == run.round - 1,
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ResearchStepRun.node_id.in_(
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[n.id for n in graph.nodes if n.type == "iterate"]
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),
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)
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)
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if run.round > 1
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else None
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)
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step.output = {
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**(previous.output if previous else {}),
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"type": "context",
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"input_ids": run.authorization["input_ids"],
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}
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elif node.type == "generate":
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reference = data.get("template") or (
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run.authorization.get("template") if run.round == 1 and key == "generate" else None
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)
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if reference:
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step.output = {
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**data,
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"type": "template",
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"template": {"id": reference["id"], "version": reference["version"]},
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}
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else:
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return await self.reserve_model(db, run, step, data, node)
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elif node.type == "expand":
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if not data.get("template"):
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raise HTTPException(422, "展开节点没有固定模板版本")
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body = Expansion(
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asset_id=data["template"]["id"],
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version=data["template"]["version"],
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input_ids=run.authorization["input_ids"],
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hypothesis=run.authorization["hypothesis"],
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settings=run.authorization["settings"],
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mode="random",
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limit=run.authorization["batch_candidates"],
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seed=run.authorization["seed"] + run.round,
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parent_alpha_ids=run.authorization["parent_alpha_ids"],
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parent_experiment_ids=data.get("parent_experiment_ids", []),
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)
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frozen_parents = run.authorization["parents"] + await Experiments(db).parents(
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[], body.parent_experiment_ids
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)
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experiment = await Experiments(db).create(
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body,
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"pipeline",
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{
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"flow_run_id": run.id,
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"node_id": key,
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"round": run.round,
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"method": "pipeline",
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"authorized_seed_snapshots": run.authorization["parents"],
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},
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parent_snapshots=frozen_parents,
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)
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step.output = {
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"type": "candidates",
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"experiment_id": experiment["id"],
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"candidate_ids": [
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c["client_item_id"]
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for c in experiment["candidates"]
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if c["validation"]["status"] == "valid"
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],
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"template": data["template"],
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}
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if not step.output["candidate_ids"]:
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step.status, step.error = "blocked", "候选均未通过本地校验，请核实字段、算子和设置"
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halt(run, "needs_review", step.error)
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return
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elif node.type == "backtest":
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await self.backtest(db, run, step, data)
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return
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elif node.type == "evaluate":
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result = await Evaluations(db).create(
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EvaluateInput(
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experiment_id=data["experiment_id"],
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backtest_run_id=data["backtest_run_id"],
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rules=run.authorization["rules"],
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)
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)
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step.output = {
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"type": "evaluation",
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"evaluation_id": result["id"],
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"verdict": result["report"]["verdict"],
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"experiment_id": data["experiment_id"],
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"backtest_run_id": data["backtest_run_id"],
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}
|
||
|
|
elif node.type == "iterate":
|
||
|
|
step.output = {
|
||
|
|
**data,
|
||
|
|
"type": "iteration",
|
||
|
|
"parent_experiment_ids": [data["experiment_id"]] if data.get("experiment_id") else [],
|
||
|
|
}
|
||
|
|
else:
|
||
|
|
raise HTTPException(422, "此研究节点尚未开放")
|
||
|
|
step.status, step.updated_at = "completed", now()
|
||
|
|
return
|
||
|
|
|
||
|
|
async def reserve_model(self, db, run, step, data, node):
|
||
|
|
if run.model_calls_used >= run.authorization["budget"]["max_model_calls"]:
|
||
|
|
halt(run, "budget_exhausted", "剩余模型调用预算不足，停止推进")
|
||
|
|
return
|
||
|
|
config = await self.ai.config(db)
|
||
|
|
if config.revision != run.model_revision:
|
||
|
|
raise HTTPException(409, "模型配置已变化，需重新确认研究运行")
|
||
|
|
generation = Generation(
|
||
|
|
name=run.name,
|
||
|
|
hypothesis=run.authorization["hypothesis"],
|
||
|
|
input_ids=run.authorization["input_ids"],
|
||
|
|
parent_experiment_ids=[data["experiment_id"]] if data.get("experiment_id") else [],
|
||
|
|
)
|
||
|
|
context = await Experiments(db).generation_context(generation)
|
||
|
|
context["parents"] = run.authorization["parents"] + context["parents"]
|
||
|
|
context["operators"] = run.authorization["operators_snapshot"]["content"]["items"][:100]
|
||
|
|
context["node_prompt"] = node.config.get("prompt", "")
|
||
|
|
if data.get("evaluation_id"):
|
||
|
|
report = (await Evaluations(db).get(data["evaluation_id"]))["report"]
|
||
|
|
context["evaluation"] = {
|
||
|
|
"rules": report["rules"],
|
||
|
|
"verdict": report["verdict"],
|
||
|
|
"records": [
|
||
|
|
{k: row.get(k) for k in ("client_item_id", "evidence", "missing", "failed")}
|
||
|
|
for row in report["records"][:100]
|
||
|
|
],
|
||
|
|
}
|
||
|
|
run.model_calls_used += 1
|
||
|
|
step.status = "running"
|
||
|
|
step.output = {
|
||
|
|
"model_attempts": step.output.get("model_attempts", [])
|
||
|
|
+ [
|
||
|
|
{
|
||
|
|
"reservation": run.model_calls_used,
|
||
|
|
"status": "running",
|
||
|
|
"reserved_at": now().isoformat(),
|
||
|
|
"model_revision": run.model_revision,
|
||
|
|
}
|
||
|
|
],
|
||
|
|
"type": "model_request",
|
||
|
|
"context": context,
|
||
|
|
"parent_experiment_ids": generation.parent_experiment_ids,
|
||
|
|
"reserved_call": run.model_calls_used,
|
||
|
|
"previous_error": step.error,
|
||
|
|
}
|
||
|
|
step.error = None
|
||
|
|
return step.id, context, run.model_revision
|
||
|
|
|
||
|
|
async def finish_model(self, run_id, step_id, result, evidence):
|
||
|
|
async with self.sessions.begin() as db:
|
||
|
|
run = await locked_flow(db, run_id)
|
||
|
|
step = await db.get(ResearchStepRun, step_id)
|
||
|
|
if not step or step.status != "running":
|
||
|
|
return
|
||
|
|
# A paused/stopped run may collect this already-issued model output, but cannot advance.
|
||
|
|
asset = await Assets(db).save(
|
||
|
|
AssetWrite(kind="template", content=result.model_dump(mode="json")),
|
||
|
|
provenance={
|
||
|
|
"flow_run_id": run_id,
|
||
|
|
"step_id": step_id,
|
||
|
|
"generation": evidence,
|
||
|
|
"context": step.output["context"],
|
||
|
|
},
|
||
|
|
)
|
||
|
|
mark_model_attempt(step, "completed")
|
||
|
|
step.output = {
|
||
|
|
"model_attempts": step.output.get("model_attempts", []),
|
||
|
|
"type": "template",
|
||
|
|
"template": {"id": asset["id"], "version": asset["version"]},
|
||
|
|
"parent_experiment_ids": step.output.get("parent_experiment_ids", []),
|
||
|
|
"generation": evidence,
|
||
|
|
"reserved_call": step.output["reserved_call"],
|
||
|
|
}
|
||
|
|
step.status, step.updated_at = "completed", now()
|
||
|
|
changed(run)
|
||
|
|
|
||
|
|
async def backtest(self, db, run, step, data):
|
||
|
|
service = Backtests(db)
|
||
|
|
if step.backtest_run_id:
|
||
|
|
current = await service.run(step.backtest_run_id)
|
||
|
|
if current["status"] in ("needs_review", "stopped", "stopping"):
|
||
|
|
halt(run, "needs_review", "关联回测需要人工处理；未知提交不会重提")
|
||
|
|
elif current["status"] in ("completed", "completed_with_errors"):
|
||
|
|
step.status = "completed"
|
||
|
|
changed(run)
|
||
|
|
step.output = {**step.output, "type": "results"}
|
||
|
|
return
|
||
|
|
if not step.output.get("preview_id"):
|
||
|
|
ids = data.get("candidate_ids")
|
||
|
|
if not ids:
|
||
|
|
halt(run, "needs_review", "没有通过校验的候选可供回测")
|
||
|
|
return
|
||
|
|
preview = await Experiments(db).preview(data["experiment_id"], ids)
|
||
|
|
step.output = {
|
||
|
|
"type": "preview",
|
||
|
|
"preview_id": preview["preview_id"],
|
||
|
|
"version": preview["version"],
|
||
|
|
"digest": preview["digest"],
|
||
|
|
"experiment_id": data["experiment_id"],
|
||
|
|
"candidate_ids": ids,
|
||
|
|
}
|
||
|
|
step.status = "previewed"
|
||
|
|
return # The immutable preview commits before authorization and execution.
|
||
|
|
preview = await service.get_preview(step.output["preview_id"])
|
||
|
|
if (
|
||
|
|
preview["digest"] != step.output["digest"]
|
||
|
|
or preview["source"].get("research_id") != step.output["experiment_id"]
|
||
|
|
):
|
||
|
|
raise HTTPException(409, "研究候选预览不再匹配保存的授权步骤")
|
||
|
|
experiment = await Experiments(db).get(step.output["experiment_id"])
|
||
|
|
if experiment["evidence"].get("flow_run_id") != run.id or {
|
||
|
|
s["id"] for s in experiment["inputs"]
|
||
|
|
} != set(run.authorization["input_ids"]):
|
||
|
|
raise HTTPException(403, "候选不属于此研究运行的固定输入范围")
|
||
|
|
if "backtest" not in run.authorization["methods"] or any(
|
||
|
|
c["settings"] != run.authorization["settings"]
|
||
|
|
for c in experiment["candidates"]
|
||
|
|
if c["client_item_id"] in step.output["candidate_ids"]
|
||
|
|
):
|
||
|
|
raise HTTPException(403, "候选方法或设置超出研究授权")
|
||
|
|
count = preview["total"]
|
||
|
|
if run.simulations_used + count > run.authorization["budget"]["max_simulations"]:
|
||
|
|
halt(run, "budget_exhausted", "剩余模拟条目预算不足以执行此固定预览")
|
||
|
|
return
|
||
|
|
run.simulations_used += count
|
||
|
|
current = await service.start(
|
||
|
|
StartInput(
|
||
|
|
preview_id=preview["preview_id"],
|
||
|
|
version=preview["version"],
|
||
|
|
idempotency_key=f"research:{step.id}",
|
||
|
|
)
|
||
|
|
)
|
||
|
|
step.backtest_run_id = current["backtest_run_id"]
|
||
|
|
step.output = {**step.output, "backtest_run_id": current["backtest_run_id"]}
|
||
|
|
step.status = "waiting"
|