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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2012 OpenStack LLC
# 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
# 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 __future__ import absolute_import
import copy
import memcache
from keystone import config
from keystone import exception
from keystone import token
from keystone.common import utils
CONF = config.CONF
config.register_str('servers', group='memcache', default='localhost:11211')
class Token(token.Driver):
def __init__(self, client=None):
self._memcache_client = client
def client(self):
return self._memcache_client or self._get_memcache_client()
def _get_memcache_client(self):
memcache_servers = CONF.memcache.servers.split(',')
self._memcache_client = memcache.Client(memcache_servers, debug=0)
return self._memcache_client
def _prefix_token_id(self, token_id):
return 'token-%s' % token_id.encode('utf-8')
def get_token(self, token_id):
ptk = self._prefix_token_id(token_id)
token = self.client.get(ptk)
if token is None:
raise exception.TokenNotFound(token_id=token_id)
return token
def create_token(self, token_id, data):
data_copy = copy.deepcopy(data)
ptk = self._prefix_token_id(token_id)
if 'expires' not in data_copy:
data_copy['expires'] = self._get_default_expire_time()
kwargs = {}
if data_copy['expires'] is not None:
expires_ts = utils.unixtime(data_copy['expires'])
kwargs['time'] = expires_ts
self.client.set(ptk, data_copy, **kwargs)
return copy.deepcopy(data_copy)
def delete_token(self, token_id):
# Test for existence
ptk = self._prefix_token_id(token_id)
return self.client.delete(ptk)