知微
fa45d8aa5f
- health_checklist.json: 192.168.1.122→node122
- ocr_client.py: docstring IP→node122
- docs/market-data-requirements.md: IP→node122
- 所有API调用通过ProxyHandler({})绕过系统代理
Privoxy对node122:18003返回500，直连正常
65 lines
1.9 KiB
Python
65 lines
1.9 KiB
Python
# !/usr/bin/env python
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"""
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Date: 2025/12/31
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Desc: HTTP 请求工具函数
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"""
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import random
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import time
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from typing import Dict, Tuple
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import requests
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from requests.adapters import HTTPAdapter
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def request_with_retry(
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url: str,
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params: Dict = None,
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timeout: int = 15,
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max_retries: int = 3,
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base_delay: float = 1.0,
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random_delay_range: Tuple[float, float] = (0.5, 1.5),
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) -> requests.Response:
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"""
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带重试机制的 HTTP GET 请求
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:param url: 请求 URL
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:type url: str
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:param params: 请求参数
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:type params: dict
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:param timeout: 超时时间（秒）
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:type timeout: int
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:param max_retries: 最大重试次数
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:type max_retries: int
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:param base_delay: 基础延迟时间（秒），用于指数退避
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:type base_delay: float
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:param random_delay_range: 随机延迟范围（秒）
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:type random_delay_range: tuple
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:return: Response 对象
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:rtype: requests.Response
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:raises: 最后一次请求的异常
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"""
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last_exception = None
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for attempt in range(max_retries):
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try:
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# 每次请求创建新的 Session，避免复用连接
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with requests.Session() as session:
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# 禁用连接池复用
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adapter = HTTPAdapter(pool_connections=1, pool_maxsize=1)
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session.mount("http://", adapter)
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session.mount("https://", adapter)
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response = session.get(url, params=params, timeout=timeout)
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response.raise_for_status()
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return response
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except (requests.RequestException, ValueError) as e:
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last_exception = e
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if attempt < max_retries - 1:
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# 指数退避 + 随机抖动
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delay = base_delay * (2**attempt) + random.uniform(*random_delay_range)
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time.sleep(delay)
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raise last_exception
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