166 lines
6.4 KiB
Python
166 lines
6.4 KiB
Python
"""
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Orchestrator for task coordination and execution
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Manages backtesting tasks with lazy imports
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"""
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import asyncio
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from concurrent.futures import Future
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from .pool import TaskPool
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from .task import TaskState
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class Orchestrator:
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"""Task coordinator for backtesting operations"""
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def __init__(self, db_path: str, file_dir=None, max_workers: int = 2):
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"""Initialize orchestrator with database path and worker limits"""
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self.db_path = db_path
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self.file_dir = file_dir
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self.pool = TaskPool(max_workers=max_workers)
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self._pending: dict[str, dict] = {}
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self._on_stage = None # async callback(task_id, stage)
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def set_on_stage(self, cb):
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"""Set callback for stage updates (async callable)"""
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self._on_stage = cb
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async def _notify_stage(self, task_id: str, stage: str):
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"""Update task stage and fire callback if set"""
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self.pool.update_stage(task_id, stage)
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if self._on_stage:
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await self._on_stage(task_id, stage)
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async def submit_cta(self, strategy_class, symbol: str, params: dict,
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start: str, end: str, cfg) -> str:
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"""Submit a CTA backtesting task asynchronously"""
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task_id = f"cta_{symbol}_{id(params)}"
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self.pool.submit(task_id, "cta")
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self._pending[task_id] = dict(
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strategy_class=strategy_class,
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symbol=symbol,
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params=params,
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start=start,
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end=end,
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cfg=cfg
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)
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await self._notify_stage(task_id, "排队中")
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spec = self._pending[task_id]
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fut: Future = self.pool.submit_work(
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task_id, _cta_worker, spec["strategy_class"], spec["symbol"],
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spec["params"], spec["start"], spec["end"], spec["cfg"], self.db_path
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)
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task = self.pool.get_task(task_id)
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task.start()
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await self._notify_stage(task_id, "回测中")
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asyncio.ensure_future(self._wait_future(task_id, fut))
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return task_id
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async def submit_optimize(self, strategy_class, symbol: str, grid: dict,
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start: str, end: str, cfg) -> str:
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"""Submit a CTA optimization task asynchronously"""
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task_id = f"opt_{symbol}_{id(grid)}"
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self.pool.submit(task_id, "optimize")
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self._pending[task_id] = dict(
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strategy_class=strategy_class,
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symbol=symbol,
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grid=grid,
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start=start,
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end=end,
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cfg=cfg
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)
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await self._notify_stage(task_id, "参数优化中")
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spec = self._pending[task_id]
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fut: Future = self.pool.submit_work(
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task_id, _opt_worker, spec["strategy_class"], spec["symbol"],
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spec["grid"], spec["start"], spec["end"], spec["cfg"], self.db_path
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)
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task = self.pool.get_task(task_id)
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task.start()
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await self._notify_stage(task_id, "优化中")
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asyncio.ensure_future(self._wait_future(task_id, fut))
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return task_id
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async def submit_factor(self, symbols: list, factor_names: list,
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start: str, end: str, cfg, output_dir: str) -> str:
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"""Submit a factor analysis task asynchronously"""
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task_id = f"factor_{id(factor_names)}"
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self.pool.submit(task_id, "factor")
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self._pending[task_id] = dict(
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symbols=symbols,
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factor_names=factor_names,
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start=start,
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end=end,
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cfg=cfg,
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output_dir=output_dir
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)
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await self._notify_stage(task_id, "因子分析中")
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spec = self._pending[task_id]
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fut: Future = self.pool.submit_work(
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task_id, _factor_worker, spec["symbols"], spec["factor_names"],
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spec["start"], spec["end"], spec["cfg"], spec["output_dir"]
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)
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task = self.pool.get_task(task_id)
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task.start()
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await self._notify_stage(task_id, "分析中")
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asyncio.ensure_future(self._wait_future(task_id, fut))
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return task_id
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async def _wait_future(self, task_id: str, fut: Future):
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"""Wait for Future to complete and handle result/exception"""
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try:
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result = await asyncio.wrap_future(fut)
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await self._on_done(task_id, result)
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except Exception as e:
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task = self.pool.get_task(task_id)
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if task:
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task.fail(f"{type(e).__name__}: {e}")
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await self._notify_stage(task_id, "失败")
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async def _on_done(self, task_id: str, result):
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"""Handle task completion (with None-guard for unknown tasks)"""
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task = self.pool.get_task(task_id)
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if task is None:
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# Unknown task - fire callback but don't crash
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await self._notify_stage(task_id, "完成")
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return
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task.complete(result_id=id(result))
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await self._notify_stage(task_id, "完成")
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def get_status(self, task_id: str) -> TaskState | None:
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"""Get task status by ID"""
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return self.pool.get_status(task_id)
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def get_result(self, task_id: str):
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"""Get task result by ID (lazy import)"""
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task = self.pool.get_task(task_id)
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if task and task.status == TaskState.DONE and task.result_id:
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# Lazy import to avoid vnpy dependency issues
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from sanguo_backtest.result_store import load_result
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return load_result(task.result_id, self.db_path)
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return None
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# Module-level worker functions (must be top-level for ProcessPoolExecutor pickle)
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def _cta_worker(strategy_class, symbol: str, params: dict, start: str, end: str, cfg, db_path: str):
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"""Worker for CTA backtest (lazy import, spawn-friendly)"""
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from sanguo_backtest.cta_engine import run_cta_backtest
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return run_cta_backtest(strategy_class, symbol, params, start, end, cfg, db_path)
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def _opt_worker(strategy_class, symbol: str, grid: dict, start: str, end: str, cfg, db_path: str):
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"""Worker for CTA optimization (lazy import, spawn-friendly)"""
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from sanguo_backtest.cta_optimizer import run_cta_optimization
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return run_cta_optimization(strategy_class, symbol, grid, start, end, cfg, db_path)
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def _factor_worker(symbols: list, factor_names: list, start: str, end: str, cfg, output_dir: str):
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"""Worker for factor analysis (lazy import, spawn-friendly)"""
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from sanguo_factor.analyzer import run_factor_analysis
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return run_factor_analysis(symbols, factor_names, start, end, cfg, output_dir)
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