refactor mobile.de parser, fix country mapping, update README
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@@ -1,14 +0,0 @@
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class ScraperError(Exception):
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"""Базовое исключение скрапера."""
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class AntiBotDetectedError(ScraperError):
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"""Вызывается, когда сайт блокирует автоматизацию."""
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class SiteStructureChangedError(ScraperError):
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"""Вызывается, когда структура страницы изменилась и данных не хватает."""
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class ListingResumeError(ScraperError):
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"""Вызывается, когда resume по checkpoint больше недостижим."""
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@@ -1,53 +0,0 @@
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import logging
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import random
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import time
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from collections.abc import Callable
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from functools import wraps
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from typing import Any
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from playwright.sync_api import Error, TimeoutError as PlaywrightTimeoutError
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from .exceptions import AntiBotDetectedError
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logger = logging.getLogger("MOBILEDE_scraper.retry")
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# Типы исключений, при которых retry имеет смысл.
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RETRYABLE_EXCEPTIONS = (
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PlaywrightTimeoutError,
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Error,
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ConnectionError,
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OSError,
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TimeoutError,
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AntiBotDetectedError,
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)
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def retryable(
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max_attempts: int,
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delay_seconds: float = 2.5,
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backoff_multiplier: float = 2.0,
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jitter_seconds: float = 0.0,
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) -> Callable[[Callable[..., Any]], Callable[..., Any]]:
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def decorator(func: Callable[..., Any]) -> Callable[..., Any]:
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@wraps(func)
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def wrapper(*args: Any, **kwargs: Any) -> Any:
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last_error: Exception | None = None
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for attempt in range(1, max_attempts + 1):
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try:
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return func(*args, **kwargs)
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except RETRYABLE_EXCEPTIONS as exc:
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last_error = exc
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logger.warning("%s failed on attempt %s/%s: %s", func.__name__, attempt, max_attempts, exc)
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if attempt < max_attempts:
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sleep_for = delay_seconds * (backoff_multiplier ** (attempt - 1))
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if jitter_seconds > 0:
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sleep_for += random.uniform(0, jitter_seconds)
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logger.debug("Retrying %s in %.2fs", func.__name__, sleep_for)
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time.sleep(sleep_for)
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if last_error is not None:
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raise last_error
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raise RuntimeError("Retry wrapper failed without a captured exception")
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return wrapper
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return decorator
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@@ -1,7 +1,6 @@
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import json
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import json
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import re
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from pathlib import Path
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from pathlib import Path
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from typing import Any, Callable, Iterable
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from typing import Any
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def save_to_json(data: Any, filename: str | Path) -> None:
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def save_to_json(data: Any, filename: str | Path) -> None:
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@@ -10,21 +9,7 @@ def save_to_json(data: Any, filename: str | Path) -> None:
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path.write_text(json.dumps(data, ensure_ascii=False, indent=2), encoding="utf-8")
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path.write_text(json.dumps(data, ensure_ascii=False, indent=2), encoding="utf-8")
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def first_non_empty(values: Iterable[Any]) -> Any | None:
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for value in values:
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if value not in (None, "", [], {}, ()):
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return value
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return None
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# Регулярные выражения для VIN, lot и price.
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VIN_RE = re.compile(r"\b([A-HJ-NPR-Z0-9]{17})\b", re.IGNORECASE)
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LOT_RE = re.compile(r"\b(\d{7,10})\b")
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PRICE_RE = re.compile(r"\$\s?([\d,]+(?:\.\d{1,2})?)")
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def deep_find_key(obj, target_keys: set[str], max_depth: int = 64, _depth: int = 0) -> list:
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def deep_find_key(obj, target_keys: set[str], max_depth: int = 64, _depth: int = 0) -> list:
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# Рекурсивно ищет значения по набору ключей в произвольном JSON-дереве.
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found = []
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found = []
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if _depth >= max_depth:
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if _depth >= max_depth:
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return found
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return found
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@@ -37,36 +22,3 @@ def deep_find_key(obj, target_keys: set[str], max_depth: int = 64, _depth: int =
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for item in obj:
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for item in obj:
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found.extend(deep_find_key(item, target_keys, max_depth=max_depth, _depth=_depth + 1))
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found.extend(deep_find_key(item, target_keys, max_depth=max_depth, _depth=_depth + 1))
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return found
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return found
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def deep_find_all_keys(
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payloads: list,
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field_map: dict[str, set[str]],
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max_depth: int = 64,
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) -> dict[str, list]:
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"""Извлекает все нужные поля за один проход по JSON."""
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# Готовим обратную карту: нормализованный ключ -> имя поля.
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reverse: dict[str, str] = {}
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for field_name, keys in field_map.items():
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for k in keys:
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reverse[k.lower()] = field_name
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result: dict[str, list] = {f: [] for f in field_map}
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def _recurse(obj: Any, depth: int) -> None:
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if depth >= max_depth:
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return
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if isinstance(obj, dict):
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for k, v in obj.items():
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field = reverse.get(k.lower())
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if field is not None:
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result[field].append(v)
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_recurse(v, depth + 1)
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elif isinstance(obj, list):
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for item in obj:
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_recurse(item, depth + 1)
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for payload in payloads:
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_recurse(payload, 0)
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return result
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