From fd98ae057b866801e79ad3b7dea464a27a712fd4 Mon Sep 17 00:00:00 2001
From: cfdaily <cfdaily@gitee.com>
Date: Sat, 2 May 2026 18:47:13 +0800
Subject: [PATCH] auto-sync: 2026-05-02 18:47:13

---
 data_platform/fallback.py | 96 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 96 insertions(+)
 create mode 100644 data_platform/fallback.py

diff --git a/data_platform/fallback.py b/data_platform/fallback.py
new file mode 100644
index 00000000..694cdf94
--- /dev/null
+++ b/data_platform/fallback.py
@@ -0,0 +1,96 @@
+#!/usr/bin/env python3
+"""多源降级管理器 - 日线(akshare→腾讯) + 实时(新浪→东财→腾讯)"""
+import pandas as pd
+import urllib.request
+import json
+import logging
+from datetime import datetime, timedelta
+from typing import Optional
+
+logging.basicConfig(level=logging.INFO, format='%(asctime)s %(levelname)s %(message)s')
+logger = logging.getLogger(__name__)
+
+
+class FallbackManager:
+    def __init__(self):
+        self._source_used = ""
+
+    def get_source_used(self) -> str:
+        return self._source_used
+
+    def get_daily(self, symbol: str, start_date: str, end_date: str) -> pd.DataFrame:
+        """获取日线数据，降级链：akshare → 腾讯K线"""
+        # 1. akshare
+        try:
+            df = self._fetch_akshare_daily(symbol, start_date, end_date)
+            if df is not None and not df.empty:
+                self._source_used = "akshare"
+                return df
+        except Exception as e:
+            logger.warning(f"akshare日线失败 {symbol}: {e}")
+
+        # 2. 腾讯K线
+        try:
+            df = self._fetch_tencent_daily(symbol, start_date, end_date)
+            if df is not None and not df.empty:
+                self._source_used = "tencent_kline"
+                return df
+        except Exception as e:
+            logger.warning(f"腾讯K线失败 {symbol}: {e}")
+
+        raise RuntimeError(f"所有日线数据源失败: {symbol} {start_date}~{end_date}")
+
+    def get_realtime(self, symbol: str) -> dict:
+        """获取实时行情，降级链：新浪→东财→腾讯"""
+        from realtime import get_realtime_quote
+        result = get_realtime_quote(symbol)
+        self._source_used = result.get("source", "unknown")
+        return result
+
+    def _fetch_akshare_daily(self, symbol: str, start_date: str, end_date: str) -> Optional[pd.DataFrame]:
+        import akshare as ak
+        code = symbol.replace("SH", "").replace("SZ", "").replace("sh", "").replace("sz", "")
+        s = start_date.replace("-", "")
+        e = end_date.replace("-", "")
+        df = ak.stock_zh_a_hist(symbol=code, period="daily", start_date=s, end_date=e, adjust="")
+        if df is None or df.empty:
+            return None
+        df = df.rename(columns={"日期": "date", "开盘": "open", "收盘": "close",
+                                 "最高": "high", "最低": "low", "成交量": "volume",
+                                 "成交额": "amount"})
+        df["date"] = pd.to_datetime(df["date"]).dt.strftime("%Y-%m-%d")
+        for c in ["open", "high", "low", "close", "volume", "amount"]:
+            df[c] = pd.to_numeric(df[c], errors="coerce").fillna(0)
+        return df[["date", "open", "high", "low", "close", "volume", "amount"]]
+
+    def _fetch_tencent_daily(self, symbol: str, start_date: str, end_date: str) -> Optional[pd.DataFrame]:
+        """腾讯K线API获取日线"""
+        code = symbol.replace("SH", "").replace("SZ", "").replace("sh", "").replace("sz", "")
+        if code.startswith(("6", "5", "1")):
+            prefix = "sh"
+        else:
+            prefix = "sz"
+        tq_symbol = f"{prefix}{code}"
+
+        # 计算天数
+        days = (datetime.strptime(end_date, "%Y-%m-%d") - datetime.strptime(start_date, "%Y-%m-%d")).days + 10
+        url = f"https://web.ifzq.gtimg.cn/appstock/app/fqkline/get?_var=kline_dayqfq&param={tq_symbol},day,,{days},qfqa"
+        try:
+            with urllib.request.urlopen(url, timeout=10) as r:
+                raw = r.read().decode("gbk")
+            json_str = raw.split("=", 1)[1]
+            data = json.loads(json_str)
+            klines = data.get("data", {}).get(tq_symbol, {}).get("day", [])
+            if not klines:
+                return None
+            df = pd.DataFrame(klines, columns=["date", "open", "close", "high", "low", "volume"])
+            for c in ["open", "close", "high", "low", "volume"]:
+                df[c] = pd.to_numeric(df[c], errors="coerce").fillna(0)
+            df["amount"] = 0.0
+            df["date"] = pd.to_datetime(df["date"]).dt.strftime("%Y-%m-%d")
+            # Filter date range
+            mask = (df["date"] >= start_date) & (df["date"] <= end_date)
+            return df.loc[mask, ["date", "open", "high", "low", "close", "volume", "amount"]]
+        except Exception as e:
+            logger.warning(f"腾讯K线请求失败: {e}")
+            return None