zun/zun/common/clients.py

106 lines
3.7 KiB
Python

# Copyright 2016 Intel.
#
# 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 cinderclient import client as cinderclient
from glanceclient import client as glanceclient
from neutronclient.v2_0 import client as neutronclient
from zun.common import exception
from zun.common import keystone
import zun.conf
class OpenStackClients(object):
"""Convenience class to create and cache client instances."""
def __init__(self, context):
self.context = context
self._keystone = None
self._glance = None
self._neutron = None
self._cinder = None
def url_for(self, **kwargs):
return self.keystone().session.get_endpoint(**kwargs)
def zun_url(self):
endpoint_type = self._get_client_option('zun', 'endpoint_type')
region_name = self._get_client_option('zun', 'region_name')
return self.url_for(service_type='container',
interface=endpoint_type,
region_name=region_name)
@property
def auth_token(self):
return self.context.auth_token or self.keystone().auth_token
def keystone(self):
if self._keystone:
return self._keystone
self._keystone = keystone.KeystoneClientV3(self.context)
return self._keystone
def _get_client_option(self, client, option):
return getattr(getattr(zun.conf.CONF, '%s_client' % client), option)
@exception.wrap_keystone_exception
def glance(self):
if self._glance:
return self._glance
glanceclient_version = self._get_client_option('glance', 'api_version')
session = self.keystone().session
self._glance = glanceclient.Client(glanceclient_version,
session=session)
return self._glance
@exception.wrap_keystone_exception
def neutron(self):
if self._neutron:
return self._neutron
session = self.keystone().session
session.verify = self._get_client_option('neutron', 'ca_file') or True
if self._get_client_option('neutron', 'insecure'):
session.verify = False
endpoint_type = self._get_client_option('neutron', 'endpoint_type')
self._neutron = neutronclient.Client(session=session,
endpoint_type=endpoint_type)
return self._neutron
@exception.wrap_keystone_exception
def cinder(self):
if self._cinder:
return self._cinder
session = self.keystone().session
session.verify = self._get_client_option('cinder', 'ca_file') or True
if self._get_client_option('cinder', 'insecure'):
session.verify = False
cinder_api_version = self._get_client_option('cinder', 'api_version')
endpoint_type = self._get_client_option('cinder', 'endpoint_type')
kwargs = {
'session': self.keystone().session,
'endpoint_type': endpoint_type,
'cacert': self._get_client_option('cinder', 'ca_file'),
'insecure': self._get_client_option('cinder', 'insecure')
}
self._cinder = cinderclient.Client(version=cinder_api_version,
**kwargs)
return self._cinder