/usr/share/pyshared/scrapy/utils/reqser.py is in python-scrapy 0.14.4-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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Helper functions for serializing (and deserializing) requests.
"""
from scrapy.http import Request
def request_to_dict(request, spider=None):
"""Convert Request object to a dict.
If a spider is given, it will try to find out the name of the spider method
used in the callback and store that as the callback.
"""
cb = request.callback
if callable(cb):
cb = _find_method(spider, cb)
eb = request.errback
if callable(eb):
eb = _find_method(spider, eb)
d = {
'url': request.url.decode('ascii'), # urls should be safe (safe_string_url)
'callback': cb,
'errback': eb,
'method': request.method,
'headers': dict(request.headers),
'body': request.body,
'cookies': request.cookies,
'meta': request.meta,
'_encoding': request._encoding,
'priority': request.priority,
'dont_filter': request.dont_filter,
}
return d
def request_from_dict(d, spider=None):
"""Create Request object from a dict.
If a spider is given, it will try to resolve the callbacks looking at the
spider for methods with the same name.
"""
cb = d['callback']
if cb and spider:
cb = _get_method(spider, cb)
eb = d['errback']
if eb and spider:
eb = _get_method(spider, eb)
return Request(
url=d['url'].encode('ascii'),
callback=cb,
errback=eb,
method=d['method'],
headers=d['headers'],
body=d['body'],
cookies=d['cookies'],
meta=d['meta'],
encoding=d['_encoding'],
priority=d['priority'],
dont_filter=d['dont_filter'])
def _find_method(obj, func):
if obj and hasattr(func, 'im_self') and func.im_self is obj:
return func.im_func.__name__
else:
raise ValueError("Function %s is not a method of: %s" % (func, obj))
def _get_method(obj, name):
name = str(name)
try:
return getattr(obj, name)
except AttributeError:
raise ValueError("Method %r not found in: %s" % (name, obj))
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