[ms, entity metas] add 'actual source' to entities table / base entity metadata cache. Closes #1767090
this is needed since for entities from 'copy based sources' such as
datafeed, we want entity.cw_metainformation() to return as 'source'
the datafeed source, not the system source (ie the source where the
entity is actually stored).
For both performance and bootstraping reasons, we should store this
information in the `entities` table and in the _type_source cache.
"""twisted server for CubicWeb web instances
:organization: Logilab
:copyright: 2001-2010 LOGILAB S.A. (Paris, FRANCE), license is LGPL v2.
:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr
:license: GNU Lesser General Public License, v2.1 - http://www.gnu.org/licenses
"""
__docformat__ = "restructuredtext en"
from cubicweb.web.http_headers import Headers
class HTTPResponse(object):
"""An object representing an HTTP Response to be sent to the client.
"""
def __init__(self, twisted_request, code=None, headers=None, stream=None):
self._headers_out = headers
self._twreq = twisted_request
self._stream = stream
self._code = code
self._init_headers()
self._finalize()
def _init_headers(self):
if self._headers_out is None:
return
# initialize cookies
cookies = self._headers_out.getHeader('set-cookie') or []
for cookie in cookies:
self._twreq.addCookie(cookie.name, cookie.value, cookie.expires,
cookie.domain, cookie.path, #TODO max-age
comment = cookie.comment, secure=cookie.secure)
self._headers_out.removeHeader('set-cookie')
# initialize other headers
for k, v in self._headers_out.getAllRawHeaders():
self._twreq.setHeader(k, v[0])
# add content-length if not present
if (self._headers_out.getHeader('content-length') is None
and self._stream is not None):
self._twreq.setHeader('content-length', len(self._stream))
def _finalize(self):
# we must set code before writing anything, else it's too late
if self._code is not None:
self._twreq.setResponseCode(self._code)
if self._stream is not None:
self._twreq.write(str(self._stream))
self._twreq.finish()
def __repr__(self):
return "<%s.%s code=%d>" % (self.__module__, self.__class__.__name__, self._code)
def not_modified_response(twisted_request, headers_in):
headers_out = Headers()
for header in (
# Required from sec 10.3.5:
'date', 'etag', 'content-location', 'expires',
'cache-control', 'vary',
# Others:
'server', 'proxy-authenticate', 'www-authenticate', 'warning'):
value = headers_in.getRawHeaders(header)
if value is not None:
headers_out.setRawHeaders(header, value)
return HTTPResponse(twisted_request=twisted_request,
headers=headers_out)