charm-cinder-ceph/hooks/cinder_contexts.py

58 lines
1.9 KiB
Python

# Copyright 2016 Canonical Ltd
#
# 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 charmhelpers.core.hookenv import (
service_name,
is_relation_made,
leader_get,
)
from charmhelpers.contrib.openstack.context import (
OSContextGenerator,
)
from charmhelpers.contrib.openstack.utils import get_os_codename_package
class CephSubordinateContext(OSContextGenerator):
interfaces = ['ceph-cinder']
def __call__(self):
"""
Used to generate template context to be added to cinder.conf in the
presence of a ceph relation.
"""
if not is_relation_made('ceph', 'key'):
return {}
service = service_name()
if get_os_codename_package('cinder-common') >= "icehouse":
volume_driver = 'cinder.volume.drivers.rbd.RBDDriver'
else:
volume_driver = 'cinder.volume.driver.RBDDriver'
return {
"cinder": {
"/etc/cinder/cinder.conf": {
"sections": {
service: [
('volume_backend_name', service),
('volume_driver', volume_driver),
('rbd_pool', service),
('rbd_user', service),
('rbd_secret_uuid', leader_get('secret-uuid')),
]
}
}
}
}