mirror of https://github.com/scrapy/scrapy.git
42 lines
1.2 KiB
Python
42 lines
1.2 KiB
Python
"""
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Download timeout middleware
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See documentation in docs/topics/downloader-middleware.rst
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"""
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from __future__ import annotations
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from typing import TYPE_CHECKING
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from scrapy import Request, Spider, signals
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from scrapy.utils.decorators import _warn_spider_arg
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if TYPE_CHECKING:
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# typing.Self requires Python 3.11
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from typing_extensions import Self
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from scrapy.crawler import Crawler
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from scrapy.http import Response
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class DownloadTimeoutMiddleware:
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def __init__(self, timeout: float = 180):
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self._timeout: float = timeout
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@classmethod
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def from_crawler(cls, crawler: Crawler) -> Self:
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o = cls(crawler.settings.getfloat("DOWNLOAD_TIMEOUT"))
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crawler.signals.connect(o.spider_opened, signal=signals.spider_opened)
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return o
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def spider_opened(self, spider: Spider) -> None:
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self._timeout = getattr(spider, "download_timeout", self._timeout)
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@_warn_spider_arg
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def process_request(
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self, request: Request, spider: Spider | None = None
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) -> Request | Response | None:
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if self._timeout:
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request.meta.setdefault("download_timeout", self._timeout)
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return None
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