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from scrapy.exceptions import NotConfigured
from scrapy.utils.request import request_httprepr
from scrapy.utils.response import response_httprepr
from scrapy.stats import stats
from scrapy.conf import settings
class DownloaderStats(object):
def __init__(self):
if not settings.getbool('DOWNLOADER_STATS'):
raise NotConfigured
def process_request(self, request, spider):
stats.inc_value('downloader/request_count', spider=spider)
stats.inc_value('downloader/request_method_count/%s' % request.method, spider=spider)
reqlen = len(request_httprepr(request))
stats.inc_value('downloader/request_bytes', reqlen, spider=spider)
def process_response(self, request, response, spider):
stats.inc_value('downloader/response_count', spider=spider)
stats.inc_value('downloader/response_status_count/%s' % response.status, spider=spider)
reslen = len(response_httprepr(response))
stats.inc_value('downloader/response_bytes', reslen, spider=spider)
return response
def process_exception(self, request, exception, spider):
ex_class = "%s.%s" % (exception.__class__.__module__, exception.__class__.__name__)
stats.inc_value('downloader/exception_count', spider=spider)
stats.inc_value('downloader/exception_type_count/%s' % ex_class, spider=spider)
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