def from_settings(cls, settings):
server = connection.from_settings(settings)
# create one-time key. needed to support to use this
# class as standalone dupefilter with scrapy's default scheduler
# if scrapy passes spider on open() method this wouldn't be needed
key = "dupefilter:%s" % int(time.time())
return cls(server, key)
def from_settings(cls, settings):
server = connection.from_settings(settings)
# create one-time key. needed to support to use this
# class as standalone dupefilter with scrapy's default scheduler
# if scrapy passes spider on open() method this wouldn't be needed
key = "dupefilter:%s" % int(time.time())
return cls(server, key)
def from_crawler(cls, crawler): settings = crawler.settings server = connection.from_settings(settings) pipe = cls(server) pipe.settings = settings pipe.crawler = crawler return pipe
def from_settings(cls, settings):
persist = settings.get('SCHEDULER_PERSIST', SCHEDULER_PERSIST)
queue_key = settings.get('SCHEDULER_QUEUE_KEY', QUEUE_KEY)
queue_cls = load_object(settings.get('SCHEDULER_QUEUE_CLASS', QUEUE_CLASS))
dupefilter_key = settings.get('DUPEFILTER_KEY', DUPEFILTER_KEY)
idle_before_close = settings.get('SCHEDULER_IDLE_BEFORE_CLOSE', IDLE_BEFORE_CLOSE)
server = connection.from_settings(settings)
return cls(server, persist, queue_key, queue_cls, dupefilter_key, idle_before_close)
def setup_redis(self):
"""Setup redis connection and idle signal.
This should be called after the spider has set its crawler object.
"""
# if not self.redis_key:
# self.redis_key = '%s:start_urls' % self.name
self.server = connection.from_settings(self.crawler.settings)
# idle signal is called when the spider has no requests left,
# that's when we will schedule new requests from redis queue
self.crawler.signals.connect(self.spider_idle, signal=signals.spider_idle)
self.crawler.signals.connect(self.item_scraped, signal=signals.item_scraped)
def from_crawler(cls, crawler):
settings = crawler.settings
persist = settings.get('SCHEDULER_PERSIST', SCHEDULER_PERSIST)
queue_key = settings.get('SCHEDULER_QUEUE_KEY', QUEUE_KEY)
queue_cls = load_object(
settings.get('SCHEDULER_QUEUE_CLASS', QUEUE_CLASS))
dupefilter_key = settings.get('DUPEFILTER_KEY', DUPEFILTER_KEY)
idle_before_close = settings.get('SCHEDULER_IDLE_BEFORE_CLOSE',
IDLE_BEFORE_CLOSE)
server = connection.from_settings(settings)
instance = cls(server, persist, queue_key, queue_cls, dupefilter_key,
idle_before_close, crawler.stats)
return instance
def setup_redis(self):
"""Setup redis connection and idle signal.
This should be called after the spider has set its crawler object.
"""
# if not self.redis_key:
# self.redis_key = '%s:start_urls' % self.name
self.server = connection.from_settings(self.crawler.settings)
# idle signal is called when the spider has no requests left,
# that's when we will schedule new requests from redis queue
self.crawler.signals.connect(self.spider_idle,
signal=signals.spider_idle)
self.crawler.signals.connect(self.item_scraped,
signal=signals.item_scraped)
def from_settings(cls, settings):
server = connection.from_settings(settings)
return cls(server)