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utils.py
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Tue, Nov 5, 14:05

utils.py
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# -*- coding: utf-8 -*-
##
## This file is part of Invenio.
## Copyright (C) 2013, 2014 CERN.
##
## Invenio is free software; you can redistribute it and/or
## modify it under the terms of the GNU General Public License as
## published by the Free Software Foundation; either version 2 of the
## License, or (at your option) any later version.
##
## Invenio 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
## General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with Invenio; if not, write to the Free Software Foundation, Inc.,
## 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
"""Archiver utility functions."""
from __future__ import absolute_import
import os
import six
from datetime import datetime
from werkzeug.utils import cached_property, import_string
from invenio.base.globals import cfg
def default_name_generator(document):
"""Return default name of archive with storage path."""
return os.path.join(
cfg["CFG_TMPSHAREDDIR"],
"bagits",
"{0}_{1}.zip".format(
document['recid'],
datetime.now().strftime("%Y-%m-%d_%H:%M:%S:%f")
)
)
class NameGenerator(object):
"""Archive name generator."""
@cached_property
def generator(self):
"""Load function from configuration ``ARCHIVER_NAME_GENERATOR``."""
func = cfg.get('ARCHIVER_NAME_GENERATOR', default_name_generator)
if isinstance(func, six.string_types):
func = import_string(func)
return func
def __call__(self, *args, **kwargs):
"""Execute name generator function."""
return self.generator(*args, **kwargs)
name_generator = NameGenerator()
__all__ = ('default_name_generator', 'name_generator')

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