dekun
5e507d0b66
Load enabled instances from settings, fetch market info via /api/hub/market, and apply exchange-specific amount and price precision in trend and roll calculators. Co-authored-by: Cursor <cursoragent@cursor.com>
82 lines
2.6 KiB
Python
82 lines
2.6 KiB
Python
"""实例 USDT 永续合约信息（与实盘 ccxt 精度一致）。"""
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from __future__ import annotations
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from typing import Any, Callable, Optional, Tuple
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from hub_calculator_market_lib import (
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amount_decimals_from_exchange,
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normalize_base_symbol,
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price_decimals_from_exchange,
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resolve_usdt_perp_symbol,
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)
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from hub_ohlcv_lib import normalize_price_tick, price_tick_from_market
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def fetch_usdt_swap_market_info(
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*,
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base_or_symbol: str,
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normalize_symbol_input: Callable[[str], str],
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normalize_exchange_symbol: Callable[[str], str],
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ensure_markets_loaded: Callable[[], None],
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exchange: Any,
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exchange_id: str = "",
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) -> dict[str, Any]:
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"""供各实例 /api/hub/market 调用。"""
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raw = str(base_or_symbol or "").strip()
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if not raw:
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return {"ok": False, "msg": "请输入币种，如 ETH"}
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try:
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ensure_markets_loaded()
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except Exception as exc:
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return {"ok": False, "msg": f"加载市场失败: {exc}"}
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base_u = normalize_base_symbol(raw)
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hub_sym = normalize_symbol_input(raw if base_u else raw)
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try:
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ex_sym = normalize_exchange_symbol(hub_sym)
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except Exception:
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ex_sym = hub_sym
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sym, err = resolve_usdt_perp_symbol(exchange, base_u or hub_sym)
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if err and ex_sym:
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markets = getattr(exchange, "markets", None) or {}
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if ex_sym in markets:
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sym = ex_sym
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err = None
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if err or not sym:
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return {"ok": False, "msg": err or f"未找到 {base_u or raw}/USDT 永续合约"}
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market = exchange.market(sym)
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try:
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contract_size = float(market.get("contractSize") or 1.0)
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except (TypeError, ValueError):
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contract_size = 1.0
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if contract_size <= 0:
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contract_size = 1.0
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price_tick = normalize_price_tick(price_tick_from_market(exchange, sym))
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amt_dec = amount_decimals_from_exchange(exchange, sym)
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px_dec = price_decimals_from_exchange(exchange, sym, price_tick)
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min_amount = None
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try:
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min_amount = float((market.get("limits") or {}).get("amount", {}).get("min"))
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except (TypeError, ValueError):
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min_amount = None
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base_out = (market.get("base") or base_u or "").upper() or base_u
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return {
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"ok": True,
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"exchange": (exchange_id or "").strip().lower(),
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"base": base_out,
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"exchange_symbol": sym,
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"display_symbol": f"{base_out}/USDT" if base_out else sym,
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"contract_size": contract_size,
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"price_tick": price_tick,
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"price_decimals": px_dec,
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"amount_decimals": amt_dec,
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"min_amount": min_amount,
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}
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