72 lines
2.3 KiB
Python
72 lines
2.3 KiB
Python
# Copyright 2016 Brocade Communications System, Inc.
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# All Rights Reserved.
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#
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import time
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from keystoneauth1 import exceptions
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from keystoneauth1.identity import v3
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from keystoneauth1 import session
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from keystoneclient import client
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from oslo_config import cfg
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from oslo_log import log as logging
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LOG = logging.getLogger(__name__)
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CONF = cfg.CONF
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KEYSTONE_CLIENT_RETRIES = 3
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KEYSTONE_RETRY_WAIT = 5
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class Keystone(object):
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"""Keystone module for OpenStack VIM
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Handles identity operations for a given OpenStack
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instance such as version, session and client
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"""
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def get_version(self, base_url=None):
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try:
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keystone_client = client.Client(auth_url=base_url)
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except exceptions.ConnectionError:
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raise
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return keystone_client.version
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def get_session(self, auth_plugin, verify=False):
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ses = session.Session(auth=auth_plugin, verify=verify)
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return ses
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def get_endpoint(self, ses, service_type, region_name=None):
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return ses.get_endpoint(service_type, region_name)
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def initialize_client(self, **kwargs):
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verify = 'True' == kwargs.pop('cert_verify', 'False')
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auth_plugin = v3.Password(**kwargs)
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ses = self.get_session(auth_plugin=auth_plugin, verify=verify)
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client_retries = KEYSTONE_CLIENT_RETRIES
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while client_retries > 0:
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try:
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cli = client.Client('v3', session=ses)
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break
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except exceptions.InternalServerError:
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LOG.warning("keystone service responds with 500 "
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"(InternalServerError).")
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client_retries = client_retries - 1
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if client_retries == 0:
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raise
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time.sleep(KEYSTONE_RETRY_WAIT)
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return cli
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