graffiti/graffiti/api/model/v1/dao/ns_dao_factory.py

58 lines
1.8 KiB
Python
Executable File

# Copyright (c) 2014 Hewlett-Packard Development Company, L.P.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from graffiti.api.model.v1.dao.ns_db_dao \
import DBNSDAO
from graffiti.api.model.v1.dao.ns_file_dao \
import FileNSDAO
from graffiti.api.model.v1.dao.ns_mem_dao \
import MemNSDAO
from oslo.config import cfg
class NSDAOFactory(object):
__dao = None
__dao_type = cfg.CONF.DEFAULT.persistence_type
def __init__(self, **kwargs):
super(NSDAOFactory, self).__init__(**kwargs)
@staticmethod
def create(dao_type, **kwargs):
if dao_type.lower() == 'memory':
print "Namespace persistence = memory"
NSDAOFactory.__dao = MemNSDAO(**kwargs)
return NSDAOFactory.__dao
elif dao_type.lower() == "db":
print "Namespace persistence = db"
NSDAOFactory.__dao = DBNSDAO(**kwargs)
return NSDAOFactory.__dao
elif dao_type.lower() == "file":
print "Namespace persistence = File"
NSDAOFactory.__dao = FileNSDAO(**kwargs)
return NSDAOFactory.__dao
return None
@staticmethod
def get():
if NSDAOFactory.__dao:
return NSDAOFactory.__dao
else:
return NSDAOFactory.create(
NSDAOFactory.__dao_type)