[web/views/staticcontrollers] Make ConcatFilesHandler write to a tempfile
In order to be more resistant to errors such as ENOSPC, and against different
threads accessing the same static data, we:
- concatenate data files to a temporary file, and rename it once we're done
- delete the tempfile in case of errors
- protect the creation of the cache_concat file with a lock
Closes #3005547
# copyright 2003-2010 LOGILAB S.A. (Paris, 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/>.
"""contains utility functions and some visual component to restrict results of
a search
"""
__docformat__ = "restructuredtext en"
from logilab.common.deprecation import moved
insert_attr_select_relation = moved('cubicweb.web.facet',
'insert_attr_select_relation')