277 lines
12 KiB
Python
277 lines
12 KiB
Python
"""影子柜台本地模拟 broker（P1，docs/design/paper-shadow-desk-design.md §3.2）。
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挂在 bullet_trade LiveEngine 的 broker_factory 上：策略下单不出门，
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由本 broker 以「下单时刻实时价 ± 滑点」本地撮合，A 股费用/整手/T+1 对齐。
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与实盘(QmtBroker)同接口(BrokerBase) → 同一个 LiveEngine 两种柜台，
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这是「双轨一致性验证」(§8)的基础：同策略同参数分别接真/假 broker 并跑对账。
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价格来源由 price_getter 注入(通常=数据 provider 最新收盘/实时价)，
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成交回调 on_trade 注入(落 paper_trades 表)。
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"""
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from __future__ import annotations
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import logging
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import uuid
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from datetime import datetime
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from typing import Any, Callable, Dict, List, Optional
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logger = logging.getLogger(__name__)
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LOT = 100 # A 股整手
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class ShadowBroker: # noqa: R0903 - 仅实现 BrokerBase 协议(bullet_trade duck-typed)
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"""本地虚拟账户撮合台。不继承 BrokerBase(避免硬依赖 bullet_trade import 顺序),
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LiveEngine 按 duck-typed 协议调用。"""
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def __init__(
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self,
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initial_cash: float = 1_000_000.0,
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*,
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commission_rate: float = 0.0003,
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stamp_duty_rate: float = 0.001,
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min_commission: float = 5.0,
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slippage: float = 0.0,
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price_getter: Optional[Callable[[str], Optional[float]]] = None,
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limit_getter: Optional[Callable[[str], Optional[Dict[str, Any]]]] = None,
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on_trade: Optional[Callable[[Dict[str, Any]], None]] = None,
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now_provider: Optional[Callable[[], datetime]] = None,
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) -> None:
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self.initial_cash = float(initial_cash)
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self.cash = float(initial_cash)
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self.commission_rate = float(commission_rate)
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self.stamp_duty_rate = float(stamp_duty_rate)
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self.min_commission = float(min_commission)
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self.slippage = float(slippage)
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self.price_getter = price_getter
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self.limit_getter = limit_getter
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self.on_trade = on_trade
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self._now = now_provider or datetime.now
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self._connected = True # 本地柜台永远"在线"
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# security -> {"amount": int, "avg_cost": float}
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self.positions: Dict[str, Dict[str, Any]] = {}
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# T+1:今日买入数量(security -> int),before_open 清零
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self._today_bought: Dict[str, int] = {}
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self._today: str = ""
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self.orders: Dict[str, Dict[str, Any]] = {}
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self.trades: List[Dict[str, Any]] = []
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# ===== 生命周期 =====
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def connect(self) -> bool:
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return True
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def disconnect(self) -> bool:
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return True
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def is_connected(self) -> bool:
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return True
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def heartbeat(self) -> None:
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return None
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# ===== LiveEngine 0.9.2 兼容查询(本地柜台无外部账户/委托可同步) =====
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# 引擎 _start_background_jobs 无条件调 supports_account_sync(),缺方法=启动即崩
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def supports_account_sync(self) -> bool:
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return False
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def supports_orders_sync(self) -> bool:
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return False
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def sync_account(self) -> None:
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return None
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def sync_orders(self) -> list:
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return []
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def cleanup(self) -> None: # 引擎关闭时无条件调
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return None
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def before_open(self) -> None:
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"""每个交易日开盘前:清 T+1 买入记录(昨日买的今天可卖)。"""
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self._today_bought = {}
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self._today = self._now().strftime("%Y-%m-%d")
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def after_close(self) -> None:
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return None
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# ===== 行情 =====
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def _ref_price(self, security: str, price: Optional[float]) -> Optional[float]:
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ref = price if price and price > 0 else None
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if ref is None and self.price_getter is not None:
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try:
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ref = self.price_getter(security)
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except Exception as exc: # noqa: BLE001 - 行情失败拒单而非崩柜台
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logger.warning("[shadow] 取价失败 %s: %s", security, exc)
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ref = None
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return ref
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def _limit_blocked(self, security: str, side: str) -> Optional[str]:
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"""涨跌停/停牌拒单原因(P1.3,双轨对账与实盘约束对齐)。
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buy 撞涨停买不进、sell 撞跌停卖不出、停牌双向拒。
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limit_getter 未注入/异常/无状态 → None(放行,等价旧行为)。
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"""
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if self.limit_getter is None:
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return None
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try:
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status = self.limit_getter(security)
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except Exception as exc: # noqa: BLE001 - 状态查询失败降级放行
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logger.warning("[shadow] 涨跌停状态查询失败 %s: %s", security, exc)
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return None
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if not isinstance(status, dict):
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return None
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if status.get("is_paused") is True:
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return "停牌不可交易"
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if side == "buy" and status.get("is_limit_up") is True:
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return "涨停拒买"
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if side == "sell" and status.get("is_limit_down") is True:
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return "跌停拒卖"
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return None
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# ===== 下单(即时全额成交) =====
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async def buy(self, security: str, amount: int, price: Optional[float] = None,
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wait_timeout: Optional[float] = None, remark: Optional[str] = None,
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*, market: bool = False) -> str:
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order_id = self._new_order("buy", security, amount, price)
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ref = self._ref_price(security, price)
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if ref is None or ref <= 0:
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return self._reject(order_id, "无参考价")
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blocked = self._limit_blocked(security, "buy")
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if blocked:
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return self._reject(order_id, blocked)
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amount = int(amount)
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if amount <= 0:
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return self._reject(order_id, "数量非法")
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amount = amount - amount % LOT # 整手向下取
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if amount <= 0:
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return self._reject(order_id, "不足一手(100股)")
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fill = round(ref * (1 + self.slippage) + 1e-9, 2) # 买入价上浮滑点
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gross = amount * fill
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commission = max(gross * self.commission_rate, self.min_commission)
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if self.cash < gross + commission:
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return self._reject(order_id, f"资金不足 需{gross + commission:.2f} 有{self.cash:.2f}")
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self.cash -= gross + commission
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pos = self.positions.setdefault(security, {"amount": 0, "avg_cost": 0.0})
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old_amt, old_cost = pos["amount"], pos["avg_cost"]
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pos["amount"] = old_amt + amount
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pos["avg_cost"] = (old_amt * old_cost + gross) / pos["amount"]
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self._today_bought[security] = self._today_bought.get(security, 0) + amount
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self._fill(order_id, security, "buy", amount, fill, commission, 0.0)
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return order_id
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async def sell(self, security: str, amount: int, price: Optional[float] = None,
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wait_timeout: Optional[float] = None, remark: Optional[str] = None,
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*, market: bool = False) -> str:
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order_id = self._new_order("sell", security, amount, price)
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ref = self._ref_price(security, price)
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if ref is None or ref <= 0:
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return self._reject(order_id, "无参考价")
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blocked = self._limit_blocked(security, "sell")
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if blocked:
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return self._reject(order_id, blocked)
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amount = int(amount)
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pos = self.positions.get(security)
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held = int(pos["amount"]) if pos else 0
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if amount <= 0 or held <= 0:
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return self._reject(order_id, "无持仓")
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# T+1:今日买入部分不可卖
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locked = self._today_bought.get(security, 0)
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sellable = max(held - locked, 0)
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if amount > sellable:
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amount = sellable
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amount = amount - amount % LOT
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if amount <= 0:
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return self._reject(order_id, f"可卖不足(T+1锁定{locked}股)")
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fill = round(ref * (1 - self.slippage) - 1e-9, 2) # 卖出价下压滑点
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gross = amount * fill
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commission = max(gross * self.commission_rate, self.min_commission)
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stamp_duty = gross * self.stamp_duty_rate
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self.cash += gross - commission - stamp_duty
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pos["amount"] = held - amount
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if pos["amount"] <= 0:
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self.positions.pop(security, None)
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self._fill(order_id, security, "sell", amount, fill, commission, stamp_duty)
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return order_id
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async def cancel_order(self, order_id: str) -> bool:
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# 即时全额成交,无可撤单
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return False
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async def get_order_status(self, order_id: str) -> Dict[str, Any]:
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st = self.orders.get(order_id) or {"order_id": order_id, "status": "not_found"}
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return dict(st)
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def get_orders(self, order_id=None, security=None, status=None,
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from_broker: bool = False) -> List[Dict[str, Any]]:
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rows = [dict(o) for o in self.orders.values()
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if (order_id is None or o["order_id"] == order_id)
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and (security is None or o["security"] == security)]
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return rows
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def get_open_orders(self) -> List[Dict[str, Any]]:
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return [dict(o) for o in self.orders.values() if o["status"] == "open"]
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def get_trades(self, order_id=None, security=None) -> List[Dict[str, Any]]:
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return [dict(t) for t in self.trades
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if (order_id is None or t["order_id"] == order_id)
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and (security is None or t["security"] == security)]
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# ===== 账户 =====
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def get_positions(self) -> List[Dict[str, Any]]:
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out = []
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for sym, pos in self.positions.items():
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px = self._ref_price(sym, None) or pos["avg_cost"]
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out.append({"security": sym, "amount": pos["amount"],
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"avg_cost": round(pos["avg_cost"], 6),
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"market_value": pos["amount"] * px,
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"price": px})
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return out
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def get_account_info(self) -> Dict[str, Any]:
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positions = self.get_positions()
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mv = sum(p["market_value"] for p in positions)
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return {
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"total_value": self.cash + mv,
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"available_cash": self.cash,
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"positions": positions,
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"market_value": mv,
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}
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# ===== 内部 =====
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def _new_order(self, side: str, security: str, amount: int,
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price: Optional[float]) -> str:
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order_id = f"shadow_{uuid.uuid4().hex[:12]}"
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self.orders[order_id] = {
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"order_id": order_id, "status": "open", "side": side,
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"security": security, "amount": int(amount),
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"price": price, "created_at": self._now().isoformat(timespec="seconds"),
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}
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return order_id
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def _reject(self, order_id: str, reason: str) -> str:
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o = self.orders[order_id]
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o["status"] = "rejected"
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o["reject_reason"] = reason
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logger.info("[shadow] 拒单 %s %s %s: %s", o["side"], o["security"], o["amount"], reason)
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return order_id
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def _fill(self, order_id: str, security: str, side: str, amount: int,
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fill: float, commission: float, stamp_duty: float) -> None:
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o = self.orders[order_id]
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o.update(status="filled", filled_amount=amount, filled_price=fill)
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trade = {
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"order_id": order_id, "security": security, "side": side,
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"amount": amount, "price": fill, "commission": round(commission, 2),
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"stamp_duty": round(stamp_duty, 2),
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"datetime": self._now().strftime("%Y-%m-%d %H:%M:%S"),
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}
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self.trades.append(trade)
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logger.info("[shadow] 成交 %s %s %d股 @%.2f 费%.2f",
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side, security, amount, fill, commission + stamp_duty)
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if self.on_trade is not None:
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try:
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self.on_trade(trade)
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except Exception as exc: # noqa: BLE001 - 落库失败不阻断撮合
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logger.warning("[shadow] on_trade 回调失败: %s", exc)
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