69 lines
1.9 KiB
Python
69 lines
1.9 KiB
Python
"""Shared `requests` session helper.
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Many providers still use `requests` directly. Reusing a Session provides:
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- Connection pooling (fewer TCP/TLS handshakes)
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- Lower CPU overhead per request
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This module intentionally avoids importing the heavy httpx-based stack.
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"""
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from __future__ import annotations
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import threading
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from typing import Any, Dict, Optional
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import requests
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from requests.adapters import HTTPAdapter
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from API.ssl_certs import resolve_verify_value
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_DEFAULT_USER_AGENT = (
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"Mozilla/5.0 (Windows NT 10.0; Win64; x64) "
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"AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0 Safari/537.36"
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)
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_local = threading.local()
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def get_requests_session(
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*,
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user_agent: str = _DEFAULT_USER_AGENT,
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verify_ssl: bool = True,
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pool_connections: int = 16,
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pool_maxsize: int = 16,
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) -> requests.Session:
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"""Return a thread-local shared Session configured for pooling."""
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session: Optional[requests.Session] = getattr(_local, "session", None)
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if session is not None:
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return session
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session = requests.Session()
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session.headers.update({"User-Agent": str(user_agent or _DEFAULT_USER_AGENT)})
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# Expand connection pool; keep max_retries=0 to avoid semantic changes.
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adapter = HTTPAdapter(pool_connections=pool_connections, pool_maxsize=pool_maxsize, max_retries=0)
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session.mount("http://", adapter)
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session.mount("https://", adapter)
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# Configure verify once.
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session.verify = resolve_verify_value(verify_ssl)
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_local.session = session
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return session
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def request(
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method: str,
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url: str,
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*,
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params: Optional[Dict[str, Any]] = None,
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headers: Optional[Dict[str, str]] = None,
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timeout: Optional[float] = None,
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**kwargs: Any,
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) -> requests.Response:
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"""Convenience wrapper around the shared Session."""
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sess = get_requests_session()
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return sess.request(method, url, params=params, headers=headers, timeout=timeout, **kwargs)
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