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# -*- coding: utf-8 -*-
# _blobs/state.py
# Copyright (C) 2017 LEAP
#
# This program 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 3 of the License, or
# (at your option) any later version.
#
# This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
"""
Get handlers that implement IBlobsBackend given a backend name.
"""
from .errors import ImproperlyConfiguredException
from .fs_backend import FilesystemBlobsBackend
class BlobsServerState(object):
"""
Given a backend name, it gives a instance of IBlobsBackend
"""
# Allowed backend classes are defined here
handlers = {"filesystem": FilesystemBlobsBackend}
def __init__(self, backend, **backend_kwargs):
if backend not in self.handlers:
raise ImproperlyConfiguredException("No such backend: %s", backend)
self.backend = self.handlers[backend](**backend_kwargs)
def open_database(self, user_id):
"""
That method is just for compatibility with CouchServerState, so
IncomingAPI can change backends.
"""
# TODO: deprecate/refactor it as it's here for compatibility.
return self.backend
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