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Use/store redirect url fingerprint #21

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edff98f
Use/store redirect url fingerprint
KrumBoychev Jul 12, 2017
f4df957
Fixed settings ..
KrumBoychev Jul 12, 2017
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Use/store redirect url fingerprint
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@KrumBoychev
KrumBoychev committed Jul 12, 2017
commit edff98fbfddf7917094547d1dd52d524a1e2b14c
1 change: 1 addition & 0 deletions README.rst
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Expand Up @@ -64,6 +64,7 @@ Supported Scrapy settings
* ``DELTAFETCH_ENABLED`` — to enable (or disable) this extension
* ``DELTAFETCH_DIR`` — directory where to store state
* ``DELTAFETCH_RESET`` — reset the state, clearing out all seen requests
* ``DELTAFETCH_USE_REDIRECT_URL`` - use/store redirect url fingerprint

These usually go in your Scrapy project's ``settings.py``.

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8 changes: 7 additions & 1 deletion scrapy_deltafetch/middleware.py
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Expand Up @@ -82,7 +82,13 @@ def process_spider_output(self, response, result, spider):
self.stats.inc_value('deltafetch/skipped', spider=spider)
continue
elif isinstance(r, (BaseItem, dict)):
key = self._get_key(response.request)
req = response.request
redirect_urls = req.meta.get('redirect_urls', False)
store_redirect_url = spider.settings.getbool('DELTAFETCH_USE_REDIRECT_URL', False)

if store_redirect_url and redirect_urls:
req = req.replace(url=redirect_urls[0])
key = self._get_key(req)
self.db[key] = str(time.time())
if self.stats:
self.stats.inc_value('deltafetch/stored', spider=spider)
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