1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
|
"""Download handlers for different schemes"""
from scrapy.core.exceptions import NotSupported
from scrapy.utils.httpobj import urlparse_cached
from scrapy.conf import settings
from scrapy.utils.misc import load_object
class RequestHandlers(object):
def __init__(self):
self._handlers = {}
handlers = settings.get('REQUEST_HANDLERS_BASE')
handlers.update(settings.get('REQUEST_HANDLERS', {}))
for scheme, cls in handlers.iteritems():
self._handlers[scheme] = load_object(cls)
def download_request(self, request, spider):
scheme = urlparse_cached(request).scheme
try:
handler = self._handlers[scheme]
except KeyError:
raise NotSupported("Unsupported URL scheme '%s' in: <%s>" % (scheme, request.url))
return handler(request, spider)
download_any = RequestHandlers().download_request
|
