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stats.py
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stats.py
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from twisted.internet import task
from scrapy.statscollectors import StatsCollector
from sh_scrapy import hsref
from sh_scrapy.writer import pipe_writer
class HubStorageStatsCollector(StatsCollector):
INTERVAL = 30
def __init__(self, crawler):
super(HubStorageStatsCollector, self).__init__(crawler)
self.hsref = hsref.hsref
self.pipe_writer = pipe_writer
def _upload_stats(self):
self.pipe_writer.write_stats(self._stats)
def open_spider(self, spider):
self._setup_looping_call(now=True)
def _setup_looping_call(self, _ignored=None, **kwargs):
self._samplestask = task.LoopingCall(self._upload_stats)
d = self._samplestask.start(self.INTERVAL, **kwargs)
d.addErrback(self._setup_looping_call, now=False)
def close_spider(self, spider, reason):
super(HubStorageStatsCollector, self).close_spider(spider, reason)
if self._samplestask.running:
self._samplestask.stop()
self._upload_stats()