136 lines
4.6 KiB
Python
136 lines
4.6 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# NOTE(Eva-i): Some code was taken from python-zaqarclient.
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import os
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import sys
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import openstack.config
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from zaqarclient.queues import client
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from zaqar.bench import config
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CONF = config.conf
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def _get_credential_args():
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"""Retrieves credential arguments for keystone
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Credentials are either read via os-client-config from the environment
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or from a config file ('clouds.yaml'). Config file variables override those
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from the environment variables.
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devstack produces a clouds.yaml with two named clouds - one named
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'devstack' which has user privs and one named 'devstack-admin' which
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has admin privs. This function will default to getting the credentials from
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environment variables. If not all required credentials present in
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environment variables, it tries to get credentials for 'devstack-admin'
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cloud in clouds.yaml. If no 'devstack-admin' cloud found, it tried to get
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credentials for 'devstack' cloud. If no 'devstack' cloud found, throws
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an error and stops the application.
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"""
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os_cfg = openstack.config.OpenStackConfig()
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cloud = os_cfg.get_one_cloud()
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cred_args = cloud.get_auth_args()
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cred_args['insecure'] = cloud.auth.get('insecure')
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cred_args['cacert'] = cloud.auth.get('cacert')
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cred_args['token'] = cloud.auth.get('token')
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required_options = ['username', 'password', 'auth_url', 'project_name']
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if not all(arg in cred_args for arg in required_options):
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try:
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cloud = os_cfg.get_one_cloud(cloud='devstack-admin')
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except Exception:
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try:
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cloud = os_cfg.get_one_cloud(cloud='devstack')
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except Exception:
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print("Insufficient amount of credentials found for keystone "
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"authentication. Credentials should reside either in "
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"environment variables or in 'clouds.yaml' file. If "
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"both present, the ones in environment variables will "
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"be preferred. Exiting.")
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sys.exit()
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cred_args = cloud.get_auth_args()
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print("Using '{}' credentials".format(cloud.name))
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return cred_args
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def _generate_client_conf():
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auth_strategy = os.environ.get('OS_AUTH_STRATEGY', 'noauth')
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if auth_strategy == 'keystone':
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args = _get_credential_args()
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conf = {
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'auth_opts': {
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'backend': 'keystone',
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'options': {
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'os_username': args.get('username'),
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'os_password': args.get('password'),
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'os_project_name': args['project_name'],
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'os_auth_url': args['auth_url'],
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'insecure': args.get('insecure'),
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'cacert': args.get('cacert'),
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'auth_token': args.get('token')
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},
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},
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}
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else:
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conf = {
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'auth_opts': {
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'backend': 'noauth',
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'options': {
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'os_project_id': 'my-lovely-benchmark',
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},
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},
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}
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print("Using '{0}' authentication method".format(conf['auth_opts']
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['backend']))
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return conf
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class LazyAPIVersion(object):
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def __init__(self):
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self.api_version = None
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@property
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def get(self):
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if self.api_version is None:
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conversion_map = {
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1.0: 1,
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1.1: 1.1,
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2.0: 2,
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}
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try:
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self.api_version = conversion_map[CONF.api_version]
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except KeyError:
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print("Unknown Zaqar API version: '{}'. Exiting...".format(
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CONF.api_version))
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sys.exit()
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print("Benchmarking Zaqar API v{0}...".format(self.api_version))
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return self.api_version
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client_conf = _generate_client_conf()
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client_api = LazyAPIVersion()
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queue_names = []
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for i in range(CONF.num_queues):
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queue_names.append((CONF.queue_prefix + '-' + str(i)))
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def get_new_client():
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return client.Client(CONF.server_url, client_api.get, conf=client_conf)
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