Load Balancing as a Service (LBaaS) for OpenStack
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octavia/octavia/common/clients.py

146 lines
5.7 KiB

# 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 glanceclient import client as glance_client
from neutronclient.neutron import client as neutron_client
from novaclient import api_versions
from novaclient import client as nova_client
from oslo_config import cfg
from oslo_log import log as logging
from oslo_utils import excutils
from octavia.common import keystone
from octavia.i18n import _LE
LOG = logging.getLogger(__name__)
CONF = cfg.CONF
GLANCE_VERSION = '2'
NEUTRON_VERSION = '2.0'
NOVA_VERSION = '2.15'
class NovaAuth(object):
nova_client = None
@classmethod
def get_nova_client(cls, region, service_name=None, endpoint=None,
endpoint_type='publicURL', insecure=False,
cacert=None):
"""Create nova client object.
:param region: The region of the service
:param service_name: The name of the nova service in the catalog
:param endpoint: The endpoint of the service
:param endpoint_type: The type of the endpoint
:param insecure: Turn off certificate validation
:param cacert: CA Cert file path
:return: a Nova Client object.
:raises Exception: if the client cannot be created
"""
ksession = keystone.KeystoneSession()
if not cls.nova_client:
kwargs = {'region_name': region,
'session': ksession.get_session(),
'endpoint_type': endpoint_type,
'insecure': insecure}
if service_name:
kwargs['service_name'] = service_name
if endpoint:
kwargs['endpoint_override'] = endpoint
if cacert:
kwargs['cacert'] = cacert
try:
cls.nova_client = nova_client.Client(
version=api_versions.APIVersion(NOVA_VERSION), **kwargs)
except Exception:
with excutils.save_and_reraise_exception():
LOG.exception(_LE("Error creating Nova client."))
return cls.nova_client
class NeutronAuth(object):
neutron_client = None
@classmethod
def get_neutron_client(cls, region, service_name=None, endpoint=None,
endpoint_type='publicURL', insecure=False,
ca_cert=None):
"""Create neutron client object.
:param region: The region of the service
:param service_name: The name of the neutron service in the catalog
:param endpoint: The endpoint of the service
:param endpoint_type: The endpoint_type of the service
:param insecure: Turn off certificate validation
:param ca_cert: CA Cert file path
:return: a Neutron Client object.
:raises Exception: if the client cannot be created
"""
ksession = keystone.KeystoneSession()
if not cls.neutron_client:
kwargs = {'region_name': region,
'session': ksession.get_session(),
'endpoint_type': endpoint_type,
'insecure': insecure}
if service_name:
kwargs['service_name'] = service_name
if endpoint:
kwargs['endpoint_override'] = endpoint
if ca_cert:
kwargs['ca_cert'] = ca_cert
try:
cls.neutron_client = neutron_client.Client(
NEUTRON_VERSION, **kwargs)
except Exception:
with excutils.save_and_reraise_exception():
LOG.exception(_LE("Error creating Neutron client."))
return cls.neutron_client
class GlanceAuth(object):
glance_client = None
@classmethod
def get_glance_client(cls, region, service_name=None, endpoint=None,
endpoint_type='publicURL', insecure=False,
cacert=None):
"""Create glance client object.
:param region: The region of the service
:param service_name: The name of the glance service in the catalog
:param endpoint: The endpoint of the service
:param endpoint_type: The endpoint_type of the service
:param insecure: Turn off certificate validation
:param cacert: CA Cert file path
:return: a Glance Client object.
:raises Exception: if the client cannot be created
"""
ksession = keystone.KeystoneSession()
if not cls.glance_client:
kwargs = {'region_name': region,
'session': ksession.get_session(),
'interface': endpoint_type}
if service_name:
kwargs['service_name'] = service_name
if endpoint:
kwargs['endpoint'] = endpoint
if endpoint.startswith("https"):
kwargs['insecure'] = insecure
kwargs['cacert'] = cacert
try:
cls.glance_client = glance_client.Client(
GLANCE_VERSION, **kwargs)
except Exception:
with excutils.save_and_reraise_exception():
LOG.exception(_LE("Error creating Glance client."))
return cls.glance_client