python-openstackclient/openstackclient/volume/client.py
Dean Troyer f43c1f7655 Defer client imports
So we really weren't deferring the loading of client libs dadgummit,
do that for real where possible.  This shaves a couple of tenths off
the static import times.

Also defer as much import-time procesing as possible.  This is a little
ugly in api.auth but this also eliminates import of the auth plugins
until they are needed.

Change-Id: Ia11d4b9cf98231d37449103fc29101dc17afb009
2015-04-15 22:40:52 -05:00

77 lines
2.3 KiB
Python

# Copyright 2012-2013 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
#
# 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 logging
from openstackclient.common import utils
LOG = logging.getLogger(__name__)
DEFAULT_VOLUME_API_VERSION = '1'
API_VERSION_OPTION = 'os_volume_api_version'
API_NAME = "volume"
API_VERSIONS = {
"1": "cinderclient.v1.client.Client"
}
def make_client(instance):
"""Returns a volume service client."""
# Defer client imports until we actually need them
from cinderclient import extension
from cinderclient.v1.contrib import list_extensions
from cinderclient.v1 import volume_snapshots
from cinderclient.v1 import volumes
# Monkey patch for v1 cinderclient
volumes.Volume.NAME_ATTR = 'display_name'
volume_snapshots.Snapshot.NAME_ATTR = 'display_name'
volume_client = utils.get_client_class(
API_NAME,
instance._api_version[API_NAME],
API_VERSIONS
)
LOG.debug('Instantiating volume client: %s', volume_client)
# Set client http_log_debug to True if verbosity level is high enough
http_log_debug = utils.get_effective_log_level() <= logging.DEBUG
extensions = [extension.Extension('list_extensions', list_extensions)]
client = volume_client(
session=instance.session,
extensions=extensions,
http_log_debug=http_log_debug,
region_name=instance._region_name,
)
return client
def build_option_parser(parser):
"""Hook to add global options"""
parser.add_argument(
'--os-volume-api-version',
metavar='<volume-api-version>',
default=utils.env(
'OS_VOLUME_API_VERSION',
default=DEFAULT_VOLUME_API_VERSION),
help='Volume API version, default=' +
DEFAULT_VOLUME_API_VERSION +
' (Env: OS_VOLUME_API_VERSION)')
return parser