Yuriy Yuriev
377 lines
14 KiB
Python
377 lines
14 KiB
Python
"""
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Browser service с поддержкой HTTP и sticky-прокси.
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"""
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import asyncio
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import random
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import logging
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from pathlib import Path
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from datetime import datetime
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from typing import Optional
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from dataclasses import dataclass
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from camoufox import DefaultAddons
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from camoufox.async_api import AsyncCamoufox
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from camoufox.exceptions import InvalidIP, InvalidProxy
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from config.settings import settings
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logger = logging.getLogger(__name__)
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def _set_real_ip(ip: Optional[str]) -> None:
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import threading
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threading.current_thread()._proxy_ip = ip
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def _patch_camoufox():
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"""Патчит camoufox чтобы:
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1. Убирать screen constraint из generate_fingerprint при ошибке
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2. Возвращать реальный IP SOCKS5 прокси вместо попытки запроса через туннель
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"""
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import camoufox.utils as _cu
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import camoufox.ip as _ci
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# Патч 1: generate_fingerprint — убираем screen при ошибке
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_orig_gf = _cu.generate_fingerprint
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def _patched_gf(**config):
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try:
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return _orig_gf(**config)
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except ValueError:
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config.pop("screen", None)
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try:
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return _orig_gf(**config)
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except ValueError:
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minimal = {k: v for k, v in config.items() if k == "locale"}
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return _orig_gf(**minimal)
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_cu.generate_fingerprint = _patched_gf
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# Патч 2: public_ip — возвращаем реальный IP прокси вместо HTTP-запроса
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# camoufox/utils.py импортирует через "from .ip import public_ip",
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# поэтому патчим именно camoufox.utils.public_ip
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_orig_ip = _ci.public_ip
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def _patched_ip(proxy_string: str = None) -> str:
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# Вызывается из thread pool — используем thread-local атрибут
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import threading
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ip = getattr(threading.current_thread(), "_proxy_ip", None)
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if ip:
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logger.debug(f"public_ip() intercepted → returning {ip}")
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return ip
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logger.warning(f"public_ip() not set, proxy_string={proxy_string}")
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if proxy_string is not None:
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return _orig_ip(proxy_string)
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return _orig_ip()
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_ci.public_ip = _patched_ip
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_cu.public_ip = _patched_ip
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_patch_camoufox()
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def _make_sticky_proxy_config() -> tuple:
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"""Возвращает (proxy_config, proxy_url_with_auth, proxy_info) для sticky-сессии."""
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import re
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session_id = random.randint(100000, 999999)
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# Заменяем session-XXXXXX в username, если уже есть — иначе добавляем
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base = settings.STICKY_PROXY_USER
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if re.search(r'session-\d+', base):
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username = re.sub(r'session-\d+', f'session-{session_id}', base)
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else:
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username = f"{base}-session-{session_id}"
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config = {
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"server": f"http://{settings.STICKY_PROXY_HOST}:{settings.STICKY_PROXY_PORT}",
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"username": username,
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"password": settings.STICKY_PROXY_PASS,
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}
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proxy_url = (
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f"http://{username}:{settings.STICKY_PROXY_PASS}"
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f"@{settings.STICKY_PROXY_HOST}:{settings.STICKY_PROXY_PORT}"
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)
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return config, proxy_url, f"sticky-{session_id}@{settings.STICKY_PROXY_HOST}"
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async def _resolve_sticky_ip(proxy_url: str) -> Optional[str]:
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"""Определяет реальный IP sticky-сессии через сам прокси."""
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import aiohttp
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try:
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async with aiohttp.ClientSession() as session:
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async with session.get(
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"https://api.ipify.org",
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proxy=proxy_url,
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timeout=aiohttp.ClientTimeout(total=10),
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) as resp:
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return (await resp.text()).strip()
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except Exception as e:
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logger.warning(f"Sticky proxy IP resolve failed: {e}")
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return None
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def _locale_for_ip(ip: str) -> str:
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"""Возвращает BCP47 locale без script-тега по реальному IP прокси."""
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try:
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from camoufox.utils import get_geolocation
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geo = get_geolocation(ip)
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lang = geo.locale.language
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region = geo.locale.region
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if lang and region:
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return f"{lang}-{region}"
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except Exception:
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pass
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return "en-US"
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@dataclass
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class VisitResult:
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"""Результат посещения страницы."""
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url: str
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initial_url: Optional[str] = None
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final_url: Optional[str] = None
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redirect_occurred: bool = False
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proxy_info: str = "direct"
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reading_time: int = 0
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screenshot_path: Optional[str] = None
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success: bool = False
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error: Optional[str] = None
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class BrowserService:
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"""
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Сервис для посещения страниц через Camoufox.
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Поддерживает HTTP и sticky-прокси.
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"""
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_PROXY_FAIL_THRESHOLD = 5 # пауза задачи после N подряд неудачных визитов
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def __init__(self):
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self.screenshots_dir = Path(settings.SCREENSHOTS_DIR)
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self.screenshots_dir.mkdir(exist_ok=True)
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self._proxy_fail_streak: int = 0
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async def visit_page(
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self,
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url: str,
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reading_time: Optional[int] = None
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) -> VisitResult:
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"""Посещает страницу."""
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if reading_time is None:
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reading_time = random.randint(
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settings.DEFAULT_MIN_READING,
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settings.DEFAULT_MAX_READING
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)
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if not settings.STICKY_PROXY_HOST:
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return VisitResult(url=url, success=False, error="No proxy configured")
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for attempt in range(3):
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try:
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proxy_config, proxy_url, proxy_info = _make_sticky_proxy_config()
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real_ip = await _resolve_sticky_ip(proxy_url)
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if real_ip is None:
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logger.warning(f"Sticky proxy IP resolve failed (attempt {attempt + 1}), retrying with new session")
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continue
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_set_real_ip(real_ip)
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proxy_locale = _locale_for_ip(real_ip)
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logger.info(f"Using sticky proxy: {proxy_info} ip={real_ip}")
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camoufox_kwargs = dict(
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headless=True,
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geoip=True,
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humanize=True,
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exclude_addons=[DefaultAddons.UBO],
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proxy=proxy_config,
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)
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if proxy_locale:
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camoufox_kwargs["locale"] = proxy_locale
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async with AsyncCamoufox(**camoufox_kwargs) as browser:
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result = await self._browse_page(browser, url, proxy_info, reading_time)
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is_proxy_dead = result.error and any(
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k in result.error for k in ("502", "Bad Gateway", "NS_ERROR_PROXY")
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)
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is_load_error = result.error and not is_proxy_dead and any(
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k in result.error for k in ("Timeout", "ERR_", "NS_ERROR_", "Connection")
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)
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if is_proxy_dead:
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logger.warning(f"Visit attempt {attempt + 1} proxy connection failed, retrying with new proxy")
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continue
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elif is_load_error:
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logger.warning(f"Visit attempt {attempt + 1} page load error: {result.error or 'unknown'}")
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self._proxy_fail_streak = 0
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return result
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except (ValueError, InvalidIP, InvalidProxy) as e:
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logger.warning(f"Visit attempt {attempt + 1} proxy error, retrying: {e}")
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except Exception as e:
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logger.error(f"Visit error: {e}", exc_info=True)
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return VisitResult(url=url, success=False, error=str(e))
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self._proxy_fail_streak += 1
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if self._proxy_fail_streak >= self._PROXY_FAIL_THRESHOLD:
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logger.error(f"Proxy fail streak {self._proxy_fail_streak} — signalling PROXY_UNAVAILABLE")
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self._proxy_fail_streak = 0
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return VisitResult(url=url, success=False, error="PROXY_UNAVAILABLE")
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return VisitResult(url=url, success=False, error="All attempts failed (fingerprint error)")
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async def _browse_page(
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self, browser, url: str, proxy_info: str, reading_time: int
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) -> VisitResult:
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"""Выполняет просмотр страницы."""
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page = await browser.new_page()
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initial_url = url
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final_url = url
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redirect = False
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reading_completed = False
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if proxy_info == "direct" :
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return VisitResult(
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url=url,
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initial_url=initial_url,
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final_url=final_url,
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redirect_occurred=redirect,
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proxy_info=proxy_info,
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reading_time=reading_time,
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)
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try:
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await page.set_viewport_size({
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"width": settings.VIEWPORT_WIDTH,
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"height": settings.VIEWPORT_HEIGHT
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})
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goto_task = asyncio.create_task(
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page.goto(url, wait_until="commit", timeout=60000)
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)
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await self._move_mouse(page, goto_task)
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await goto_task
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initial_url = page.url
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try:
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final_url, redirect = await self._wait_redirect(page, initial_url)
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except Exception as e:
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logger.warning(f"Redirect wait error (ignored): {e}")
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final_url = page.url
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await self._simulate_reading(page, reading_time)
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reading_completed = True
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screenshot_path = None
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if settings.SCREENSHOTS_DIR:
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try:
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screenshot_path = await self._take_screenshot(page, final_url)
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except Exception:
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pass
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return VisitResult(
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url=url,
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initial_url=initial_url,
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final_url=final_url,
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redirect_occurred=redirect,
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proxy_info=proxy_info,
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reading_time=reading_time,
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screenshot_path=screenshot_path,
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success=True
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)
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except asyncio.CancelledError:
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raise
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except Exception as e:
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if not reading_completed:
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logger.warning(f"Browse error [{proxy_info}] {url[:50]}: {e}")
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return VisitResult(
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url=url,
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initial_url=initial_url,
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final_url=final_url,
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redirect_occurred=redirect,
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proxy_info=proxy_info,
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reading_time=reading_time,
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success=reading_completed,
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error=str(e) if not reading_completed else None
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)
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finally:
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await page.close()
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async def _move_mouse(self, page, task):
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"""Двигает мышь."""
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w, h = settings.VIEWPORT_WIDTH, settings.VIEWPORT_HEIGHT
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try:
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while not task.done():
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await page.mouse.move(
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random.randint(100, w - 100),
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random.randint(100, h - 100)
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)
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await asyncio.sleep(random.uniform(0.1, 0.3))
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except Exception:
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pass
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async def _wait_redirect(self, page, initial_url):
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"""Ждет редирект."""
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loop = asyncio.get_running_loop()
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start = loop.time()
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redirect = False
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current = initial_url
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while loop.time() - start < settings.MAX_REDIRECT_WAIT:
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await asyncio.sleep(2)
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new_url = page.url
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if new_url != current:
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current = new_url
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redirect = True
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task = asyncio.create_task(
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page.wait_for_load_state("load", timeout=30000)
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)
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await self._move_mouse(page, task)
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await task
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break
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await self._random_action(page)
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return page.url, redirect
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async def _simulate_reading(self, page, duration):
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"""Симулирует чтение."""
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loop = asyncio.get_running_loop()
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start = loop.time()
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while loop.time() - start < duration:
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await self._random_action(page)
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async def _random_action(self, page):
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"""Случайное действие."""
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try:
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action = random.choice(['move', 'scroll', 'pause'])
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if action == 'move':
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x = random.randint(100, settings.VIEWPORT_WIDTH - 100)
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y = random.randint(100, settings.VIEWPORT_HEIGHT - 100)
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await page.mouse.move(x, y)
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await asyncio.sleep(random.uniform(0.3, 1.0))
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elif action == 'scroll':
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await page.evaluate(f"window.scrollBy(0, {random.randint(100, 300)})")
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await asyncio.sleep(random.uniform(0.3, 0.8))
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else:
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await asyncio.sleep(random.uniform(1, 3))
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except Exception:
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await asyncio.sleep(0.5)
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async def _take_screenshot(self, page, url):
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"""Скриншот."""
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try:
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ts = datetime.now().strftime("%Y%m%d_%H%M%S")
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domain = url.replace("https://", "").replace("http://", "").split("/")[0][:30]
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fp = self.screenshots_dir / f"{ts}_{domain}.png"
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await page.screenshot(path=str(fp), full_page=True)
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return str(fp)
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except Exception as e:
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logger.error(f"Screenshot: {e}")
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return None
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async def cleanup(self):
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pass
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async def visit_page_from_twitch(self, url: str, channel: str, reading_time: int = None) -> VisitResult:
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return await self.visit_page(url, reading_time)
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