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reset flag can now also be str of spider name in addition to bool #48

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reset flag can now also be str of spider name in addition to bool #48

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10 changes: 8 additions & 2 deletions scrapy_deltafetch/middleware.py
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Original file line number Diff line number Diff line change
Expand Up @@ -37,7 +37,13 @@ def from_crawler(cls, crawler):
if not s.getbool('DELTAFETCH_ENABLED'):
raise NotConfigured
dir = data_path(s.get('DELTAFETCH_DIR', 'deltafetch'))
reset = s.getbool('DELTAFETCH_RESET')

# DELTAFETCH_RESET can be bool (for all spiders) or str of specific spider name
try:
reset = s.getbool('DELTAFETCH_RESET')
except ValueError:
reset = s.get('DELTAFETCH_RESET')

o = cls(dir, reset, crawler.stats)
crawler.signals.connect(o.spider_opened, signal=signals.spider_opened)
crawler.signals.connect(o.spider_closed, signal=signals.spider_closed)
Expand All @@ -49,7 +55,7 @@ def spider_opened(self, spider):
# TODO may be tricky, as there may be different paths on systems
dbpath = os.path.join(self.dir, '%s.db' % spider.name)
reset = self.reset or getattr(spider, 'deltafetch_reset', False)
flag = 'n' if reset else 'c'
flag = 'n' if reset is True or reset == spider.name else 'c'
try:
self.db = dbm.open(dbpath, flag=flag)
except Exception:
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