fix(tradein/estimator): IMV-путь /estimate через пул прокси; пустой пул — честная деградация без IMV (#3386 п.в) #3397

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bot-backend merged 2 commits from fix/3386-estimator-imv-proxy-pool into main 2026-09-06 06:04:08 +00:00

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Author SHA1 Message Date
33cad4f82e fix(#3386): curl_proxy_url — health=False и на отмене (BaseException); admin IMV через пул; тест без create=True
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2026-09-06 10:57:08 +05:00
6f97995140 fix(tradein/estimator): IMV-путь берёт прокси из пула, пустой пул не ломает /estimate (#3386)
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Оба вызова `evaluate_via_imv` в `_get_or_fetch_imv_cached` шли без
`proxy_provider`, а `providers/_proxy.py::curl_proxy_url` считает
`use_pool = флаг AND provider is not None` — пул был выключен по построению,
curl-сессия уходила на env-прокси SCRAPER_PROXY_URL (мёртвый узел, #2613).

Провайдер берётся из уже существующего module-level импорта
`app.services.scraper_adapters` (в estimator цикла нет, в отличие от
house_imv_backfill — там lazy import вынужденный). Lease — один на вызов IMV,
acquire/release внутри `curl_proxy_url`, release в finally на всех выходах.

Пустой пул в проде (`NoProxyAvailableError`, в т.ч. завёрнутый — проверка по
цепочке причин `caused_by_no_proxy`) остаётся graceful: `_get_or_fetch_imv_cached`
возвращает None, ответ отдаётся без IMV-якоря. Причина в логе теперь честная —
«пул прокси пуст», а не «fetch failed» (запрос не уходил вовсе).
2026-09-06 10:32:42 +05:00