Files
etf/datasource/__init__.py
aszerW 4e3aac5e0e feat: Flask统一数据服务迁移(分层架构)
架构设计:
- 对外统一接口 fetch():自动识别资产类型并路由
- 对内分层实现:各资产类型独立方法,职责单一

新增文件:
- datasource/universal_fetcher.py: 统一数据获取器
  - _fetch_china_index: A股指数(Tushare)
  - _fetch_china_etf: A股ETF(含净值)
  - _fetch_us_index: 美股指数(YFinance+SSH)
  - _fetch_hk_index: 港股指数(YFinance+SSH)
  - _fetch_futures: 期货(Tushare/YFinance)
  - fetch_etf_with_nav: ETF价格+净值(计算溢价率)

- datasource/asset_type_detector.py: 资产类型检测器
  - AssetType枚举:9种资产类型
  - detect(): 自动识别资产类型
  - group_by_type(): 批量分组

- datasource/flask_server.py: Flask API服务
  - LRU + TTL 双缓存机制
  - 8个API端点:ohlcv、etf/nav、batch、cache等

更新:
- datasource/__init__.py: 导出新模块

验证:
- 模块导入成功
- 资产类型检测正确
- A股数据获取正常(沪深300: 5条)
2026-05-12 21:33:19 +08:00

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"""
数据源模块
核心数据获取能力:
- A股数据Tushare指数、ETF、期货
- 境外数据YFinance港股、美股通过SSH隧道
架构设计:
- 分层架构:对外统一接口,对内各资产类型独立实现
- Flask APILRU + TTL 双缓存机制
用法:
from datasource import UniversalDataFetcher, AssetType
fetcher = UniversalDataFetcher()
df = fetcher.fetch("000300.SH", "2024-01-01", "2024-12-31")
"""
from .ssh_tunnel import SSHTunnelManager
from .tushare_source import TushareSource
from .yfinance_source import YFinanceSource
from .hybrid_source import HybridDataSource
from .asset_type_detector import AssetTypeDetector, AssetType
from .universal_fetcher import UniversalDataFetcher
__all__ = [
'SSHTunnelManager',
'TushareSource',
'YFinanceSource',
'HybridDataSource',
'AssetTypeDetector',
'AssetType',
'UniversalDataFetcher',
]