107 lines
3.4 KiB
Python
107 lines
3.4 KiB
Python
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"""
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数据源工厂
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根据市场类型返回对应的数据源
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"""
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from typing import Dict, List, Any, Optional
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from app.data_sources.base import BaseDataSource
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from app.utils.logger import get_logger
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logger = get_logger(__name__)
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class DataSourceFactory:
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"""数据源工厂"""
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_sources: Dict[str, BaseDataSource] = {}
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@classmethod
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def get_source(cls, market: str) -> BaseDataSource:
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"""
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获取指定市场的数据源
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Args:
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market: 市场类型 (Crypto, USStock, AShare, HShare)
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Returns:
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数据源实例
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"""
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if market not in cls._sources:
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cls._sources[market] = cls._create_source(market)
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return cls._sources[market]
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@classmethod
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def get_data_source(cls, name: str) -> BaseDataSource:
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"""
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Backward compatible alias used by older code paths.
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Some modules historically called `get_data_source("binance")` to fetch a crypto data source.
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In the localized Python backend we primarily use `get_source("Crypto")`.
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"""
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key = (name or "").strip().lower()
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if key in ("crypto", "binance", "okx", "bybit", "bitget", "kucoin", "gate", "mexc", "kraken", "coinbase"):
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return cls.get_source("Crypto")
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if key in ("futures",):
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return cls.get_source("Futures")
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# Default to Crypto for safety (most callers want a ticker for crypto pairs).
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return cls.get_source("Crypto")
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@classmethod
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def _create_source(cls, market: str) -> BaseDataSource:
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"""创建数据源实例"""
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if market == 'Crypto':
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from app.data_sources.crypto import CryptoDataSource
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return CryptoDataSource()
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elif market == 'USStock':
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from app.data_sources.us_stock import USStockDataSource
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return USStockDataSource()
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elif market == 'AShare':
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from app.data_sources.cn_stock import AShareDataSource
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return AShareDataSource()
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elif market == 'HShare':
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from app.data_sources.cn_stock import HShareDataSource
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return HShareDataSource()
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elif market == 'Forex':
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from app.data_sources.forex import ForexDataSource
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return ForexDataSource()
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elif market == 'Futures':
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from app.data_sources.futures import FuturesDataSource
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return FuturesDataSource()
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else:
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raise ValueError(f"不支持的市场类型: {market}")
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@classmethod
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def get_kline(
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cls,
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market: str,
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symbol: str,
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timeframe: str,
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limit: int,
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before_time: Optional[int] = None
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) -> List[Dict[str, Any]]:
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"""
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获取K线数据的便捷方法
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Args:
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market: 市场类型
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symbol: 交易对/股票代码
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timeframe: 时间周期
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limit: 数据条数
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before_time: 获取此时间之前的数据
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Returns:
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K线数据列表
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"""
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try:
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source = cls.get_source(market)
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klines = source.get_kline(symbol, timeframe, limit, before_time)
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# 确保数据按时间排序
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klines.sort(key=lambda x: x['time'])
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return klines
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except Exception as e:
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logger.error(f"Failed to fetch K-lines {market}:{symbol} - {str(e)}")
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return []
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