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import akshare as ak
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import pandas as pd
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import random
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import time
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import logging
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import requests
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from typing import List, Optional, Dict
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from datetime import datetime
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from app.services.datasource.base import DataSourceBase
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logger = logging.getLogger(__name__)
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class SmartRequester:
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"""
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反爬综合管理器：集成 Headers 伪装、拟人化延时、重试机制
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(IP 代理部分暂按文档要求空缺，后续扩展)
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"""
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def __init__(self, max_retries: int = 3):
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self.max_retries = max_retries
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self.session = requests.Session()
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# User-Agent 池
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self.user_agents = [
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"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/115.0.0.0 Safari/537.36",
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"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36",
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"Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/115.0",
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"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.0.0 Safari/537.36 Edg/113.0.1774.42",
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]
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def get_random_headers(self, referer: str = "https://finance.sina.com.cn/") -> Dict[str, str]:
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"""生成随机请求头，模拟真实浏览器"""
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return {
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"User-Agent": random.choice(self.user_agents),
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"Referer": referer,
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"Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8",
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"Accept-Language": "zh-CN,zh;q=0.9,en;q=0.8",
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"Accept-Encoding": "gzip, deflate, br",
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"Connection": "keep-alive",
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"Upgrade-Insecure-Requests": "1",
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}
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def request(self, url, referer="https://finance.sina.com.cn/", method="GET", **kwargs) -> Optional[requests.Response]:
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"""执行智能请求"""
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last_error = None
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for attempt in range(self.max_retries):
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try:
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# 1. 拟人化延时
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if attempt == 0:
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time.sleep(random.uniform(0.5, 1.5))
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else:
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delay = (2 ** attempt) + random.uniform(1, 3)
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logging.warning(f"第 {attempt+1} 次重试，等待 {delay:.1f} 秒...")
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time.sleep(delay)
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# 2. 轮换 Headers
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headers = kwargs.pop("headers", {})
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random_headers = self.get_random_headers(referer=referer)
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headers.update(random_headers)
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kwargs["headers"] = headers
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# 3. 发送请求
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logging.debug(f"请求: {method} {url}")
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response = self.session.request(method, url, timeout=10, **kwargs)
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# 4. 检查状态
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if response.status_code == 200:
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logging.info("✅ 请求成功")
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return response
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elif response.status_code == 403:
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logging.warning("⚠️ 收到 403 Forbidden，将尝试重试")
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raise requests.exceptions.HTTPError("403 Forbidden")
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else:
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response.raise_for_status()
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except Exception as e:
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last_error = e
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logging.warning(f"❌ 请求失败: {str(e)}")
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logging.error(f"🚫 所有 {self.max_retries} 次尝试均失败")
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return None
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class AkshareSource(DataSourceBase):
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"""AKShare 数据源适配器"""
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def __init__(self, config: dict):
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super().__init__(config)
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self.name = "akshare"
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self.requester = SmartRequester(max_retries=config.get("max_retries", 3))
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def initialize(self) -> bool:
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"""初始化检查"""
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try:
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ak.__version__
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self._initialized = True
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return True
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except Exception as e:
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self._initialized = False
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logging.error(f"AkshareSource 初始化失败: {e}")
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return False
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def get_contract_list(self, exchange: Optional[str] = None) -> List[dict]:
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"""获取期货合约列表"""
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if not self._initialized:
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self.initialize()
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results = []
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try:
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exchanges_to_fetch = ["CZCE", "DCE", "SHFE", "INE", "CFFEX", "GFEX"]
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if exchange:
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exchanges_to_fetch = [exchange]
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for ex in exchanges_to_fetch:
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try:
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func_name = f"futures_contract_info_{ex.lower()}"
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if hasattr(ak, func_name):
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df = getattr(ak, func_name)()
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else:
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continue
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if df is not None and not df.empty:
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# 统一列名映射
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col_map = {}
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if '合约代码' in df.columns:
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col_map['合约代码'] = 'symbol'
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if '产品代码' in df.columns:
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col_map['产品代码'] = 'product'
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if '品种' in df.columns:
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col_map['品种'] = 'product'
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if '交易单位' in df.columns:
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col_map['交易单位'] = 'multiplier'
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if '最小变动价位' in df.columns:
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col_map['最小变动价位'] = 'price_tick'
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if '上市日' in df.columns:
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col_map['上市日'] = 'list_date'
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if '到期日' in df.columns:
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col_map['到期日'] = 'expire_date'
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df = df.rename(columns=col_map)
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for _, row in df.iterrows():
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symbol = row.get("symbol")
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if not symbol:
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continue
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# 提取品种代码 (通常 symbol 最后两位是年月，前面是品种，如 rb2401 -> rb)
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product = row.get("product", "")
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if not product and len(symbol) > 2:
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# 简单提取字母部分
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import re
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match = re.match(r"([a-zA-Z]+)", symbol)
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if match:
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product = match.group(1).lower()
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multiplier = row.get("multiplier")
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if multiplier:
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try:
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multiplier = int(float(str(multiplier).replace(',', '')))
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except:
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multiplier = 10
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else:
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multiplier = 10 # 默认值
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price_tick = row.get("price_tick")
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if price_tick:
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try:
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price_tick = float(str(price_tick).replace(',', ''))
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except:
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price_tick = None
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results.append({
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"symbol": symbol,
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"exchange": ex,
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"name": symbol, # AKShare 通常不返回中文名称，用代码代替
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"product": product,
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"multiplier": multiplier,
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"price_tick": price_tick,
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"expire_date": self._parse_date(row.get("expire_date")),
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"is_active": True,
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})
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except Exception as e:
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logging.warning(f"获取 {ex} 合约列表失败: {e}")
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continue
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except Exception as e:
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logging.error(f"获取合约列表异常: {e}")
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return results
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def _parse_date(self, date_str) -> Optional[datetime]:
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"""解析日期"""
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if not date_str:
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return None
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try:
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if isinstance(date_str, str):
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return datetime.strptime(date_str, "%Y-%m-%d")
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elif isinstance(date_str, pd.Timestamp):
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return date_str.to_pydatetime()
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return None
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except:
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return None
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def get_kline_daily(self, symbol: str, start_date: str, end_date: str) -> pd.DataFrame:
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"""获取日 K 线数据"""
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logger.info(f"[AKShare-日K线] 开始获取 symbol={symbol}, start_date={start_date}, end_date={end_date}")
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if not self._initialized:
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logger.info(f"[AKShare-日K线] 初始化 AKShare")
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self.initialize()
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try:
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# AKShare 期货日 K 线接口：futures_zh_daily_sina
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logger.info(f"[AKShare-日K线] 调用 ak.futures_zh_daily_sina(symbol='{symbol}')")
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df = ak.futures_zh_daily_sina(symbol=symbol)
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if df is None or df.empty:
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logger.warning(f"[AKShare-日K线] AKShare 返回空数据，symbol={symbol}")
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return pd.DataFrame()
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logger.info(f"[AKShare-日K线] AKShare 返回 {len(df)} 条原始数据")
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logger.debug(f"[AKShare-日K线] 原始数据列: {df.columns.tolist()}")
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logger.debug(f"[AKShare-日K线] 原始数据样例:\n{df.head()}")
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# 过滤日期范围
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df['date'] = pd.to_datetime(df['date'])
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logger.debug(f"[AKShare-日K线] 日期范围: {df['date'].min()} ~ {df['date'].max()}")
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mask = (df['date'] >= start_date) & (df['date'] <= end_date)
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df_filtered = df.loc[mask].copy()
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logger.info(f"[AKShare-日K线] 日期过滤后剩余 {len(df_filtered)} 条记录")
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# 统一列名
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df_filtered = df_filtered.rename(columns={
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"date": "trade_date",
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"open": "open",
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"high": "high",
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"low": "low",
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"close": "close",
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"volume": "volume",
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"hold": "open_interest",
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"settle": "settle",
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})
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# AKShare 日线通常没有 turnover 和 pre_settle，置空
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df_filtered["turnover"] = None
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df_filtered["pre_settle"] = None
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df_filtered["trade_date"] = pd.to_datetime(df_filtered["trade_date"])
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logger.info(f"[AKShare-日K线] 最终返回 {len(df_filtered)} 条记录")
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return df_filtered[["trade_date", "open", "high", "low", "close", "volume", "turnover", "open_interest", "settle", "pre_settle"]]
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except Exception as e:
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logger.error(f"[AKShare-日K线] 获取 {symbol} 日 K 线失败: {e}", exc_info=True)
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return pd.DataFrame()
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def get_kline_weekly(self, symbol: str, start_date: str, end_date: str) -> pd.DataFrame:
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"""获取周 K 线数据 (通过日 K 聚合)"""
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daily_df = self.get_kline_daily(symbol, start_date, end_date)
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if daily_df.empty:
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return pd.DataFrame()
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daily_df = daily_df.set_index("trade_date")
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weekly = daily_df.resample("W-FRI").agg({
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"open": "first",
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"high": "max",
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"low": "min",
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"close": "last",
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"volume": "sum",
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"turnover": "sum",
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"open_interest": "last",
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}).dropna()
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weekly = weekly.reset_index()
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weekly = weekly.rename(columns={"trade_date": "trade_date"})
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return weekly
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def get_kline_intraday(self, symbol: str, period: str, start_date: str, end_date: str) -> pd.DataFrame:
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"""获取分钟级 K 线数据"""
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if not self._initialized:
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self.initialize()
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try:
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# AKShare 期货分钟 K 线接口：futures_zh_minute_sina
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period_map = {"5m": "5", "15m": "15", "30m": "30", "60m": "60"}
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freq = period_map.get(period, "5")
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df = ak.futures_zh_minute_sina(symbol=symbol, period=freq)
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if df is None or df.empty:
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return pd.DataFrame()
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# 过滤日期
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df['datetime'] = pd.to_datetime(df['datetime'])
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mask = (df['datetime'] >= start_date) & (df['datetime'] <= end_date)
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df = df.loc[mask].copy()
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# 统一列名
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df = df.rename(columns={
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"datetime": "trade_time",
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"open": "open",
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"high": "high",
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"low": "low",
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"close": "close",
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"volume": "volume",
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"hold": "open_interest",
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})
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df["turnover"] = None
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return df[["trade_time", "open", "high", "low", "close", "volume", "turnover", "open_interest"]]
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except Exception as e:
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logging.error(f"获取 {symbol} 分钟 K 线失败: {e}")
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return pd.DataFrame()
|
