aszerW
81045f9d85
问题根因： - Python OpenSSL 3.5.4 + requests 2.32.4 + urllib3 2.5.0 版本不兼容 - requests 2.32.4 内部使用 urllib3 的方式与 urllib3 2.5.0 API 不兼容 - curl（SecureTransport）正常工作，但 Python requests（OpenSSL）失败 - 服务器（Caddy）使用 TLS 1.3 + X25519MLKEM768（后量子密钥交换） 修复方案： - 用 urllib3.PoolManager 直接发起 HTTP 请求（已验证可正常工作） - 封装 _http_get() 函数替代 requests.get() - 替换所有 requests 相关异常类型为 urllib3 异常 修改文件： - datasource/flask_api_source.py: 核心数据源层 - rotation/simple_rotation.py: 简单轮动策略层
522 lines
19 KiB
Python
522 lines
19 KiB
Python
"""
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Flask API 数据源
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通过部署后的 Flask API 服务获取 OHLCV 数据
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支持远程调用，无需本地 SSH 隧道
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"""
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import os
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import json
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import time
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import urllib3
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import urllib.parse
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import pandas as pd
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from typing import Optional, Dict, List
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from datetime import datetime
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from pathlib import Path
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from dotenv import load_dotenv
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from .models import OHLCVResponse, validate_ohlcv_response
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load_dotenv()
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# ============================================================
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# HTTP client (urllib3 替代 requests，修复 SSL EOF 问题)
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# ============================================================
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_http_pool = urllib3.PoolManager()
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def _http_get(url: str, params: dict = None, timeout: int = 120) -> urllib3.HTTPResponse:
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"""使用 urllib3 发起 GET 请求（替代 requests.get，修复 OpenSSL 3.5 + Caddy 的 SSL EOF 问题）"""
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if params:
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url = url + '?' + urllib.parse.urlencode(params)
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return _http_pool.request('GET', url, timeout=urllib3.Timeout(connect=10, read=timeout))
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def _parse_json(resp: urllib3.HTTPResponse) -> dict:
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"""解析 JSON 响应"""
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return json.loads(resp.data.decode('utf-8'))
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class FlaskAPIDataSource:
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"""
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Flask API 数据源
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通过 HTTP API 获取数据，无需本地配置 SSH 隧道
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适用于远程调用或生产环境
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用法:
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source = FlaskAPIDataSource(base_url="https://k3s.tokenpluse.xyz")
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df = source.fetch("000300.SH", "2024-01-01", "2024-12-31")
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"""
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def __init__(
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self,
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base_url: str = None,
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api_path: str = "/api/v1/ohlcv",
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timeout: int = 120,
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retries: int = 3
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):
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"""
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初始化
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Args:
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base_url: API 服务基础地址，默认从环境变量读取
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api_path: API 路径
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timeout: 请求超时时间（秒）
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retries: 重试次数
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"""
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self.base_url = base_url or os.getenv(
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'FLASK_API_URL',
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'https://k3s.tokenpluse.xyz'
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)
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self.api_path = api_path
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self.timeout = timeout
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self.retries = retries
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# 确保 base_url 不以 / 结尾
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self.base_url = self.base_url.rstrip('/')
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def fetch(
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self,
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code: str,
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start_date: str,
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end_date: str,
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adj: str = 'raw',
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asset_type: str = None,
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timeframe: str = '1d'
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) -> Optional[pd.DataFrame]:
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"""
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获取单只标的 OHLCV 数据（支持 adj 参数）
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Args:
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code: 标的代码
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start_date: 开始日期 YYYY-MM-DD
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end_date: 结束日期 YYYY-MM-DD
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adj: 复权类型 'raw'(原始) / 'qfq'(前复权) / 'hfq'(后复权)，默认 'raw'
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asset_type: 资产类型（可选，用于覆盖自动检测）
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timeframe: K线周期（加密货币需要）
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Returns:
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DataFrame with columns: date, open, high, low, close, volume
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adj='hfq' 时 A股 ETF 会额外返回 adj_factor, close_hfq
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示例:
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# 原始价格
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df = source.fetch("000300.SH", "2020-01-01", "2024-12-31")
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# A股股票后复权
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df = source.fetch("000001.SZ", "2020-01-01", "2024-12-31", adj='hfq')
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"""
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# 构建请求 URL
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url = f"{self.base_url}{self.api_path}"
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# 构建请求参数（包含 adj）
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params = {
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'code': code,
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'start': start_date,
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'end': end_date,
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'adj': adj, # 添加 adj 参数
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}
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# 加密货币需要 timeframe 参数
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if asset_type == 'crypto' or code.upper() in ['BTC', 'ETH']:
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params['timeframe'] = timeframe
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# 可选：强制指定 asset_type
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if asset_type:
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params['asset_type'] = asset_type
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for attempt in range(self.retries):
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try:
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response = _http_get(url, params=params, timeout=self.timeout)
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if response.status != 200:
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if attempt < self.retries - 1:
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time.sleep(1 + attempt)
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continue
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print(f"✗ API请求失败: {response.status} - {response.data.decode('utf-8', errors='replace')[:100]}")
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return None
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# 解析 JSON
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data = _parse_json(response)
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# 检查错误
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if 'error' in data:
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print(f"✗ API返回错误: {data['error']}")
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return None
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# ✅ 使用 Pydantic 模型验证响应（类型安全）
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try:
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validated = validate_ohlcv_response(data)
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except Exception as e:
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print(f"✗ {code}: 响应数据验证失败 - {e}")
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return None
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# 检查数据是否为空
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if not validated.data:
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print(f"⚠ {code}: 无数据返回")
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return None
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# 转换为 DataFrame
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df = pd.DataFrame(validated.data)
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# 处理日期列
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if 'date' in df.columns:
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df['date'] = pd.to_datetime(df['date'])
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df = df.set_index('date')
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# 确保列名标准化（保留 code 列如果存在）
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standard_cols = ['open', 'high', 'low', 'close', 'volume']
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if 'code' in df.columns:
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standard_cols = ['code'] + standard_cols
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df = df[standard_cols]
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# 使用 API 返回的实际数据范围（而非请求参数）
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actual_start = validated.date_range.start if validated.date_range else start_date
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actual_end = validated.date_range.end if validated.date_range else end_date
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actual_count = validated.count
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# 缓存 info 信息（如果有）
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if validated.info:
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df.attrs['info'] = validated.info
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# ETF 数据自动附加净值和溢价率信息
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if validated.asset_type == 'china_etf':
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# 净值数据
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if validated.nav and validated.nav.data:
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nav_df = pd.DataFrame(validated.nav.data)
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if 'date' in nav_df.columns:
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nav_df['date'] = pd.to_datetime(nav_df['date'])
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nav_df = nav_df.set_index('date')
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df.attrs['nav'] = nav_df
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# 溢价率序列
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if validated.premium_series:
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premium_dict = {item.date: item.premium for item in validated.premium_series}
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df.attrs['premium_series'] = premium_dict
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# 最新溢价率
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if validated.latest_premium is not None:
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df.attrs['latest_premium'] = validated.latest_premium
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df.attrs['premium_date'] = validated.premium_date
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# 溢价率统计
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if validated.premium_stats:
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df.attrs['premium_stats'] = validated.premium_stats.model_dump()
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print(f"✓ {code}: {actual_count} 条数据 ({actual_start} ~ {actual_end})")
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return df
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except urllib3.exceptions.TimeoutError:
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if attempt < self.retries - 1:
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print(f"⚠ {code}: 请求超时，重试 {attempt + 2}/{self.retries}")
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time.sleep(1 + attempt)
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continue
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print(f"✗ {code}: 请求超时")
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return None
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except (urllib3.exceptions.SSLError, urllib3.exceptions.MaxRetryError, urllib3.exceptions.ProtocolError) as e:
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if attempt < self.retries - 1:
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print(f"⚠ {code}: {type(e).__name__}，重试 {attempt + 2}/{self.retries}")
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time.sleep(1 + attempt)
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continue
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print(f"✗ {code}: {type(e).__name__} after {self.retries} retries")
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return None
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except urllib3.exceptions.HTTPError as e:
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if attempt < self.retries - 1:
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time.sleep(1 + attempt)
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continue
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print(f"✗ {code}: 请求异常 - {e}")
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return None
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except json.JSONDecodeError as e:
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print(f"✗ {code}: JSON解析失败 - {e}")
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return None
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return None
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def fetch_batch(
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self,
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codes: List[str],
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start_date: str,
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end_date: str,
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asset_types: Dict[str, str] = None
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) -> Dict[str, Optional[pd.DataFrame]]:
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"""
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批量获取多只标的数据
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Args:
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codes: 标的代码列表
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start_date: 开始日期
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end_date: 结束日期
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asset_types: 资产类型映射 {code: asset_type}
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Returns:
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{code: DataFrame}
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"""
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results = {}
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asset_types = asset_types or {}
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print(f"从 Flask API 获取 {len(codes)} 只标的...")
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for i, code in enumerate(codes, 1):
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asset_type = asset_types.get(code)
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df = self.fetch(code, start_date, end_date, asset_type)
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results[code] = df
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# 显示进度
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if i % 5 == 0 or i == len(codes):
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success = sum(1 for v in results.values() if v is not None)
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print(f" 进度: {i}/{len(codes)} (成功: {success})")
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return results
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def fetch_etf_nav(
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self,
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code: str,
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start_date: str,
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end_date: str
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) -> Optional[pd.DataFrame]:
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"""
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获取 ETF 净值数据
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Args:
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code: ETF代码
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start_date: 开始日期
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end_date: 结束日期
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Returns:
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DataFrame with nav column
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"""
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url = f"{self.base_url}/api/v1/etf/nav"
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params = {
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'code': code,
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'start': start_date,
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'end': end_date
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}
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try:
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response = _http_get(url, params=params, timeout=self.timeout)
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if response.status != 200:
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return None
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data = _parse_json(response)
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if 'error' in data:
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return None
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# 解析净值数据
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# Flask server 返回格式: {'nav': {'data': [...], 'count': N}, 'premium_series': [...]}
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nav_section = data.get('nav', {})
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records = nav_section.get('data', [])
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if not records:
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return None
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df = pd.DataFrame(records)
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if 'date' in df.columns:
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df['date'] = pd.to_datetime(df['date'])
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df = df.set_index('date')
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# 添加溢价率信息（如果有）
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if 'premium_series' in data:
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df.attrs['premium_series'] = data['premium_series']
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if 'latest_premium' in data:
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df.attrs['latest_premium'] = data['latest_premium']
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if 'premium_stats' in data:
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df.attrs['premium_stats'] = data['premium_stats']
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return df
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except Exception as e:
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print(f"✗ {code} 净值获取失败: {e}")
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return None
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def fetch_with_adj(
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self,
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code: str,
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start_date: str,
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end_date: str,
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adj: str = 'raw',
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asset_type: str = None,
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timeframe: str = '1d'
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) -> Optional[pd.DataFrame]:
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"""
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获取 OHLCV 数据（支持复权参数）- 简化版
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直接调用 fetch(adj=adj)，无需重复实现。
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Args:
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code: 标的代码
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start_date: 开始日期 YYYY-MM-DD
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end_date: 结束日期 YYYY-MM-DD
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adj: 复权参数（raw/qfq/hfq），默认 'raw'
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asset_type: 资产类型（可选）
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timeframe: K线周期（加密货币需要）
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Returns:
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DataFrame，结构因 adj 参数略有不同
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示例:
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# A股股票后复权
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df = source.fetch_with_adj("000001.SZ", "2020-01-01", "2024-12-31", adj='hfq')
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"""
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# 直接调用 fetch，传递 adj 参数
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return self.fetch(code, start_date, end_date, adj, asset_type, timeframe)
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def get_health(self) -> Dict:
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"""获取服务健康状态"""
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# 先尝试 ohlcv 端点检查服务是否可用
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url = f"{self.base_url}{self.api_path}"
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params = {'code': '000300.SH', 'start': '2024-01-01', 'end': '2024-01-05'}
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try:
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response = _http_get(url, params=params, timeout=self.timeout)
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if response.status == 200:
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data = _parse_json(response)
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return {
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'status': 'healthy',
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'ssh_configured': True,
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'available': True
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}
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else:
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return {'status': 'error', 'available': False}
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except Exception as e:
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return {'status': 'error', 'message': str(e), 'available': False}
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def get_calendar_info(self) -> Dict:
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"""获取交易日历服务信息"""
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url = f"{self.base_url}/api/v1/calendar/info"
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try:
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response = _http_get(url, timeout=10)
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if response.status == 200:
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return _parse_json(response)
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else:
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return {"error": f"HTTP {response.status}"}
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except Exception as e:
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return {"error": str(e)}
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def get_trading_calendar(
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self,
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market: str,
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start_date: str,
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end_date: str
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) -> Optional[pd.DatetimeIndex]:
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"""
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获取交易日历
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Args:
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market: 市场代码
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- 'A' 或 'china': A股（上交所/深交所，交易日历一致）
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- 'US' 或 'us': 美股（NYSE）
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- 'HK' 或 'hk': 港股（HKEX）
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start_date: 开始日期 YYYY-MM-DD
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end_date: 结束日期 YYYY-MM-DD
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Returns:
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DatetimeIndex: 交易日日期序列，失败返回 None
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示例:
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# 获取 A 股 2024 年 1 月交易日历
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dates = source.get_trading_calendar('A', '2024-01-01', '2024-01-31')
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# 获取美股交易日历
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dates = source.get_trading_calendar('US', '2024-01-01', '2024-01-15')
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"""
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url = f"{self.base_url}/api/v1/trading-calendar"
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params = {
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'market': market,
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'start': start_date,
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'end': end_date
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}
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for attempt in range(self.retries):
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try:
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response = _http_get(url, params=params, timeout=self.timeout)
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if response.status != 200:
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if attempt < self.retries - 1:
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print(f"⚠ 交易日历请求失败 (HTTP {response.status})，重试 {attempt + 2}/{self.retries}")
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time.sleep(1 + attempt)
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continue
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print(f"✗ 交易日历请求失败: HTTP {response.status} - {response.data.decode('utf-8', errors='replace')[:100]}")
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return None
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data = _parse_json(response)
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# 检查错误
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if 'error' in data:
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print(f"✗ 交易日历获取失败: {data['error']}")
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return None
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# 解析交易日期
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trading_dates = data.get('trading_dates', [])
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if not trading_dates:
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print(f"⚠ 市场 {market} 在 {start_date} ~ {end_date} 期间无交易日")
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return pd.DatetimeIndex([])
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# 转换为 DatetimeIndex
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dates = pd.DatetimeIndex(trading_dates)
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count = data.get('count', len(dates))
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exchange = data.get('exchange', '')
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print(f"✓ {market} ({exchange}): {count} 个交易日 ({start_date} ~ {end_date})")
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return dates
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except urllib3.exceptions.TimeoutError:
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if attempt < self.retries - 1:
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print(f"⚠ 交易日历请求超时，重试 {attempt + 2}/{self.retries}")
|
||
time.sleep(1 + attempt)
|
||
continue
|
||
print(f"✗ 交易日历请求超时")
|
||
return None
|
||
|
||
except (urllib3.exceptions.SSLError, urllib3.exceptions.MaxRetryError, urllib3.exceptions.ProtocolError) as e:
|
||
if attempt < self.retries - 1:
|
||
print(f"⚠ 交易日历: {type(e).__name__}，重试 {attempt + 2}/{self.retries}")
|
||
time.sleep(1 + attempt)
|
||
continue
|
||
print(f"✗ 交易日历: {type(e).__name__} after {self.retries} retries")
|
||
return None
|
||
|
||
except urllib3.exceptions.HTTPError as e:
|
||
if attempt < self.retries - 1:
|
||
time.sleep(1 + attempt)
|
||
continue
|
||
print(f"✗ 交易日历请求异常: {e}")
|
||
return None
|
||
|
||
except json.JSONDecodeError as e:
|
||
print(f"✗ 交易日历 JSON 解析失败: {e}")
|
||
return None
|
||
|
||
return None
|
||
|
||
def get_service_info(self) -> Dict:
|
||
"""获取服务信息"""
|
||
url = f"{self.base_url}/"
|
||
|
||
try:
|
||
response = _http_get(url, timeout=10)
|
||
return _parse_json(response)
|
||
except Exception as e:
|
||
return {"error": str(e)}
|
||
|
||
|
||
# 全局实例
|
||
_flask_api_source: Optional[FlaskAPIDataSource] = None
|
||
|
||
|
||
def get_flask_api_source(base_url: str = None) -> FlaskAPIDataSource:
|
||
"""获取 Flask API 数据源实例"""
|
||
global _flask_api_source
|
||
|
||
if _flask_api_source is None:
|
||
_flask_api_source = FlaskAPIDataSource(base_url=base_url)
|
||
|
||
return _flask_api_source |