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"""期货业务服务 - 对应Go的internal/service/futures.go"""
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import asyncio
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from datetime import datetime, timedelta
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from typing import List
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from sqlalchemy.orm import Session
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from app.models import (
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KLineQueryRequest, KLineData, SymbolListRequest, SymbolListData,
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BatchKLineRequest, BatchKLineData, BatchKLineResult, KLineSubData,
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TradingDatesRequest, TradingDatesData,
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FuturesContractsRequest, FuturesContractsData, Frequency, KLineItem
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)
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from app.repositories import FuturesRepository
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from app.services.adapter_service import AdapterService
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from app.core.logger import error, info
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class FuturesService:
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"""期货业务服务"""
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def __init__(self, db: Session):
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self.repository = FuturesRepository(db)
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self.db = db
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def query_klines(self, req: KLineQueryRequest) -> KLineData:
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"""查询K线数据"""
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# 解析日期
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try:
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start = datetime.strptime(req.start, "%Y%m%d")
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end = datetime.strptime(req.end, "%Y%m%d")
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end = end + timedelta(days=1) - timedelta(seconds=1)
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except ValueError as e:
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raise ValueError(f"Invalid date format: {e}")
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# 获取K线数据（从数据库）
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items = self.repository.get_klines(req.symbol, req.freq, start, end)
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# 如果数据库没有数据，尝试从适配器获取
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if not items:
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info(f"No data in DB for {req.symbol}, fetching from adapter...")
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items = self._fetch_from_adapter(req.symbol, req.start, req.end, req.freq)
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# 保存到数据库
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if items:
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self._save_klines_to_db(req.symbol, req.freq, items)
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return KLineData(
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symbol=req.symbol,
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freq=req.freq,
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count=len(items),
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items=items
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)
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def _fetch_from_adapter(self, symbol: str, start: str, end: str, freq: Frequency) -> List[KLineItem]:
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"""从适配器获取K线数据"""
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try:
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# 获取适配器服务
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adapter_service = AdapterService()
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# 确保适配器已连接
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adapter = adapter_service.get_active_adapter("futures")
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if not adapter:
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# 尝试连接 amazingdata
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loop = asyncio.new_event_loop()
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asyncio.set_event_loop(loop)
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loop.run_until_complete(adapter_service._connect_adapter("amazingdata"))
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loop.close()
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adapter = adapter_service.get_active_adapter("futures")
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if not adapter:
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error("No active adapter available")
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return []
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# 转换频率格式
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freq_str = self._convert_freq_to_str(freq)
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# 异步获取数据
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loop = asyncio.new_event_loop()
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asyncio.set_event_loop(loop)
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klines = loop.run_until_complete(
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adapter.fetch_klines(symbol, start, end, freq_str)
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)
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loop.close()
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# 转换为KLineItem
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items = []
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for k in klines:
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items.append(KLineItem(
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symbol=symbol,
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time=datetime.fromtimestamp(k.time),
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open=k.open,
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high=k.high,
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low=k.low,
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close=k.close,
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volume=k.volume,
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amount=k.amount,
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open_interest=k.open_interest,
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created_at=datetime.now()
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))
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info(f"Fetched {len(items)} klines from adapter for {symbol}")
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return items
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except Exception as e:
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error(f"Failed to fetch from adapter: {e}")
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return []
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def _convert_freq_to_str(self, freq: Frequency) -> str:
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"""转换频率枚举为字符串"""
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mapping = {
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Frequency.FREQ_1M: "1m",
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Frequency.FREQ_5M: "5m",
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Frequency.FREQ_15M: "15m",
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Frequency.FREQ_30M: "30m",
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Frequency.FREQ_60M: "60m",
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Frequency.FREQ_1D: "1d",
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Frequency.FREQ_1W: "1w",
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Frequency.FREQ_1MONTH: "1month",
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}
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return mapping.get(freq, "1d")
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def _save_klines_to_db(self, symbol: str, freq: Frequency, items: List[KLineItem]) -> None:
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"""保存K线数据到数据库"""
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try:
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self.repository.save_klines(freq, symbol, items)
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info(f"Saved {len(items)} klines to DB for {symbol}")
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except Exception as e:
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error(f"Failed to save klines to DB: {e}")
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def list_symbols(self, req: SymbolListRequest) -> SymbolListData:
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"""查询标的列表"""
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if req.page <= 0:
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req.page = 1
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if req.size <= 0:
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req.size = 20
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if req.size > 100:
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req.size = 100
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symbols, total = self.repository.list_symbols(req)
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# 如果数据库没有数据，尝试从适配器获取
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if not symbols:
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info("No symbols in DB, fetching from adapter...")
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symbols = self._fetch_symbols_from_adapter()
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if symbols:
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# 保存到数据库
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self._save_symbols_to_db(symbols)
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# 重新查询
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symbols, total = self.repository.list_symbols(req)
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return SymbolListData(
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total=total,
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page=req.page,
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size=req.size,
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items=symbols
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)
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def _fetch_symbols_from_adapter(self) -> List:
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"""从适配器获取期货列表"""
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try:
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adapter_service = AdapterService()
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# 确保适配器已连接
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adapter = adapter_service.get_active_adapter("futures")
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if not adapter:
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asyncio.run(adapter_service._connect_adapter("amazingdata"))
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adapter = adapter_service.get_active_adapter("futures")
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if not adapter:
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error("No active adapter available")
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return []
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# 异步获取数据
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loop = asyncio.new_event_loop()
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asyncio.set_event_loop(loop)
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symbols_info = loop.run_until_complete(
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adapter.fetch_symbols("futures")
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)
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loop.close()
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# 转换为Symbol模型
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from app.models import Symbol, SymbolType
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symbols = []
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for s in symbols_info:
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symbols.append(Symbol(
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symbol_id=s.symbol_id,
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symbol_type=SymbolType.FUTURES,
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exchange=s.exchange,
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name=s.name,
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underlying=s.underlying
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))
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info(f"Fetched {len(symbols)} symbols from adapter")
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return symbols
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except Exception as e:
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error(f"Failed to fetch symbols from adapter: {e}")
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return []
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def _save_symbols_to_db(self, symbols: List) -> None:
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"""保存期货列表到数据库"""
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try:
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self.repository.save_symbols(symbols)
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info(f"Saved {len(symbols)} symbols to DB")
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except Exception as e:
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error(f"Failed to save symbols to DB: {e}")
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def batch_query_klines(self, req: BatchKLineRequest) -> BatchKLineData:
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"""批量查询K线"""
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results = []
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for symbol in req.symbols:
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single_req = KLineQueryRequest(
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symbol=symbol,
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start=req.start,
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end=req.end,
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freq=req.freq
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)
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try:
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data = self.query_klines(single_req)
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results.append(BatchKLineResult(
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symbol=symbol,
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success=True,
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data=KLineSubData(count=data.count, items=data.items)
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))
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except Exception as e:
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error(f"Batch query failed for {symbol}: {e}")
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results.append(BatchKLineResult(
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symbol=symbol,
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success=False,
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error=str(e)
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))
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return BatchKLineData(results=results)
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def get_trading_dates(self, req: TradingDatesRequest) -> TradingDatesData:
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"""获取交易日历"""
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return self.repository.get_trading_dates(req.start, req.end)
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def get_contracts_by_underlying(
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self,
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req: FuturesContractsRequest
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) -> FuturesContractsData:
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"""根据品种获取合约"""
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return self.repository.get_contracts_by_underlying(
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req.underlying,
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req.exchange
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)
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