mirror of
https://github.com/wasrusgen/zov-tech.git
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d5f290bd0a
DOCKERFILE: - + Chromium system deps (libnss3, libxkbcommon0, libgbm1, libgtk-3-0, etc.) - + RUN python -m playwright install chromium (~150MB) - + ENV PLAYWRIGHT_BROWSERS_PATH REQUIREMENTS: - + playwright >= 1.45 PARSERS: - new playwright_engine.py — singleton browser, isolated context per request, blocks images/fonts/CSS to save memory, waits for selector + JS hydration - yamarket.py — rewritten to use Playwright (Я.Маркет is React SPA) - ozon.py — Playwright fallback when composer-api returns challenge (403) - wb.py — exponential backoff on 429, still uses direct HTTP (JSON API, no JS needed) STRATEGY (Hybrid Path C): - Я.Маркет: Playwright (rendering JS) - OZON: composer-api first, Playwright fallback - WB: direct HTTP with backoff (JSON API, fast) - DNS: kept but lower priority (Qrator hard to crack) - No more proxy needed for primary path DEPLOY: removed PROXY_STATIC_LIST from .env, expect ~5min for first build (Chromium download)
130 lines
4.5 KiB
Python
130 lines
4.5 KiB
Python
"""Singleton Playwright + Chromium для парсинга JS-сайтов.
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Использование:
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from .playwright_engine import fetch_page
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html = fetch_page("https://market.yandex.ru/search?text=Bosch+KGN39")
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Зачем синглтон: запуск Chromium ~2-3 сек. Держим один экземпляр, открываем
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изолированный контекст (cookies/storage) на каждый запрос.
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"""
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from __future__ import annotations
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import logging
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import threading
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from typing import Optional
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log = logging.getLogger("zov.parser.playwright")
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_lock = threading.Lock()
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_playwright = None
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_browser = None
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def _get_browser():
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"""Возвращает singleton Chromium browser. Инициализирует при первом обращении."""
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global _playwright, _browser
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with _lock:
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if _browser is not None and _browser.is_connected():
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return _browser
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try:
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from playwright.sync_api import sync_playwright
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except ImportError as e:
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log.error("Playwright not installed: %s", e)
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return None
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try:
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_playwright = sync_playwright().start()
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_browser = _playwright.chromium.launch(
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headless=True,
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args=[
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"--no-sandbox",
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"--disable-blink-features=AutomationControlled",
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"--disable-dev-shm-usage", # snug на маленькой памяти
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"--disable-gpu",
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],
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)
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log.info("Playwright Chromium started")
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return _browser
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except Exception as e:
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log.error("Failed to start Playwright: %s", e)
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_playwright = None
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_browser = None
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return None
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def fetch_page(url: str, wait_selector: Optional[str] = None,
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wait_ms: int = 3000, timeout_ms: int = 25000,
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user_agent: Optional[str] = None) -> Optional[str]:
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"""Открывает страницу через headless Chromium, ждёт пока JS отрендерит,
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возвращает текущий HTML.
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Args:
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url: целевой URL
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wait_selector: если задан — ждём пока этот CSS-селектор появится
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wait_ms: фиксированная задержка после загрузки (для JS-hydration)
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timeout_ms: общий таймаут навигации
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user_agent: переопределить UA (по умолчанию используется playwright-овский)
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"""
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browser = _get_browser()
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if not browser:
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return None
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ctx = None
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page = None
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try:
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ctx = browser.new_context(
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user_agent=user_agent or
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"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 "
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"(KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36",
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viewport={"width": 1280, "height": 800},
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locale="ru-RU",
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extra_http_headers={
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"Accept-Language": "ru-RU,ru;q=0.9,en;q=0.8",
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},
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)
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page = ctx.new_page()
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# Блокируем тяжёлые ресурсы — экономим время/память
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def _route(route):
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rt = route.request.resource_type
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if rt in ("image", "font", "media", "stylesheet"):
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return route.abort()
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return route.continue_()
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page.route("**/*", _route)
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page.goto(url, timeout=timeout_ms, wait_until="domcontentloaded")
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if wait_selector:
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try:
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page.wait_for_selector(wait_selector, timeout=wait_ms + 5000)
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except Exception:
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log.debug("wait_selector %s not found, continuing", wait_selector)
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else:
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page.wait_for_timeout(wait_ms)
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html = page.content()
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return html
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except Exception as e:
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log.warning("fetch_page failed for %s: %s", url, e)
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return None
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finally:
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if page:
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try: page.close()
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except: pass
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if ctx:
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try: ctx.close()
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except: pass
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def shutdown():
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"""Закрывает браузер при остановке приложения."""
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global _playwright, _browser
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with _lock:
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if _browser:
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try: _browser.close()
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except: pass
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_browser = None
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if _playwright:
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try: _playwright.stop()
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except: pass
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_playwright = None
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