dekun
35 lines
905 B
Python
35 lines
905 B
Python
"""按配置创建交易所实例。"""
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from __future__ import annotations
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from ..config import Settings, get_settings
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from .protocol import ExchangeMarket
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_exchange: ExchangeMarket | None = None
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def build_exchange(settings: Settings | None = None) -> ExchangeMarket:
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s = settings or get_settings()
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name = (s.exchange or "okx").strip().lower()
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if name == "okx":
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from .okx.adapter import OkxExchange
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return OkxExchange(s)
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if name in ("binance", "bn"):
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from .binance.adapter import BinanceExchange
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return BinanceExchange(s)
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raise ValueError(f"未知交易所 EXCHANGE={s.exchange!r}，支持 okx / binance")
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def get_exchange() -> ExchangeMarket:
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global _exchange
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if _exchange is None:
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_exchange = build_exchange()
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return _exchange
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def set_exchange(ex: ExchangeMarket | None) -> None:
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global _exchange
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_exchange = ex
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