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agessaman
f279f2be0e
wx, rain and the weather service each built the same requests session (two retries on connection errors and 5xx for GET, 0.3 s backoff, status codes not raised, 10x20 connection pool). It now lives in modules/http_retry.py; each class keeps its _create_retry_session as a one-line delegate, and each keeps its own session lifetime (rain still builds one per call).
29 lines
953 B
Python
29 lines
953 B
Python
"""Shared ``requests`` session with retry/backoff for the weather and forecast APIs."""
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from __future__ import annotations
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import requests
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from requests.adapters import HTTPAdapter
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from urllib3.util.retry import Retry
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def make_retry_session() -> requests.Session:
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"""A session that retries GETs on connection errors and 5xx responses.
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Two retries (three attempts) with 0.3 s / 0.6 s backoff. Status codes are
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not raised; callers inspect the response. Connections are pooled
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(10 pools, up to 20 connections each).
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"""
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session = requests.Session()
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retry_strategy = Retry(
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total=2,
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backoff_factor=0.3,
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status_forcelist=[500, 502, 503, 504],
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allowed_methods=["GET"],
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raise_on_status=False,
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)
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adapter = HTTPAdapter(max_retries=retry_strategy, pool_connections=10, pool_maxsize=20)
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session.mount("https://", adapter)
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session.mount("http://", adapter)
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return session
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