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# 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.
import datetime
from oslo_config import cfg
from oslo_log import versionutils
from oslo_utils import timeutils
from keystone.common import kvs
from keystone.contrib import revoke
from keystone import exception
CONF = cfg.CONF
_EVENT_KEY = 'os-revoke-events'
_KVS_BACKEND = 'openstack.kvs.Memory'
class Revoke(revoke.Driver):
@versionutils.deprecated(
versionutils.deprecated.JUNO,
in_favor_of='keystone.contrib.revoke.backends.sql',
remove_in=+1,
what='keystone.contrib.revoke.backends.kvs')
def __init__(self, **kwargs):
super(Revoke, self).__init__()
self._store = kvs.get_key_value_store('os-revoke-driver')
self._store.configure(backing_store=_KVS_BACKEND, **kwargs)
def _list_events(self):
try:
return self._store.get(_EVENT_KEY)
except exception.NotFound:
return []
def list_events(self, last_fetch=None):
results = []
with self._store.get_lock(_EVENT_KEY):
events = self._list_events()
for event in events:
revoked_at = event.revoked_at
if last_fetch is None or revoked_at > last_fetch:
results.append(event)
return results
def revoke(self, event):
pruned = []
expire_delta = datetime.timedelta(seconds=CONF.token.expiration)
oldest = timeutils.utcnow() - expire_delta
with self._store.get_lock(_EVENT_KEY) as lock:
events = self._list_events()
if event:
events.append(event)
for event in events:
revoked_at = event.revoked_at
if revoked_at > oldest:
pruned.append(event)
self._store.set(_EVENT_KEY, pruned, lock)
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