[server] prevent returning closed cursor to the database pool
In since c8c6ad8 init_repository use repo.internal_cnx() instead of
repo.system_source.get_connection() so it use the pool and we should not close
cursors from the pool before returning it back. Otherwise we may have
"connection already closed" error.
This bug only trigger when connection-pool-size = 1. Since we are moving to use
a dynamic pooler we need to get this fixed.
This does not occur with sqlite since the connection wrapper instantiate new
cursor everytime, but this occur with other databases.
# copyright 2017 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
# copyright 2014-2016 UNLISH S.A.S. (Montpellier, FRANCE), all rights reserved.
#
# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
#
# This file is part of CubicWeb.
#
# CubicWeb is free software: you can redistribute it and/or modify it under the
# terms of the GNU Lesser General Public License as published by the Free
# Software Foundation, either version 2.1 of the License, or (at your option)
# any later version.
#
# CubicWeb is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License along
# with CubicWeb. If not, see <http://www.gnu.org/licenses/>.
from pyramid.httpexceptions import HTTPNotFound
from cubicweb import rdf
def negociate_mime_type(request, possible_mimetypes):
accepted_headers_by_weight = sorted(
request.accept.parsed or [], key=lambda h: h[1], reverse=True
)
mime_type_negociated = None
for parsed_header in accepted_headers_by_weight:
accepted_mime_type = parsed_header[0]
if accepted_mime_type in possible_mimetypes:
mime_type_negociated = accepted_mime_type
break
return mime_type_negociated
def rdf_context_from_eid(request):
mime_type = negociate_mime_type(request, rdf.RDF_MIMETYPE_TO_FORMAT)
if mime_type is None:
raise HTTPNotFound()
entity = request.cw_request.entity_from_eid(request.matchdict['eid'])
return RDFResource(entity, mime_type)
class RDFResource:
def __init__(self, entity, mime_type):
self.entity = entity
self.mime_type = mime_type