676 lines
27 KiB
Python
676 lines
27 KiB
Python
# Copyright 2010 Jacob Kaplan-Moss
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# Copyright 2011 OpenStack Foundation
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# Copyright 2011 Piston Cloud Computing, Inc.
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# Copyright 2011 Nebula, Inc.
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# All Rights Reserved.
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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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"""
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OpenStack Client interface. Handles the REST calls and responses.
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"""
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import logging
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from oslo.serialization import jsonutils
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import pkg_resources
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import requests
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from six.moves.urllib import parse as urlparse
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try:
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import pickle
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# NOTE(sdague): The conditional keyring import needs to only
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# trigger if it's a version of keyring that's supported in global
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# requirements. Update _min and _bad when that changes.
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keyring_v = pkg_resources.parse_version(
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pkg_resources.get_distribution("keyring").version)
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keyring_min = pkg_resources.parse_version('2.1')
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keyring_bad = (pkg_resources.parse_version('3.3'),)
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if keyring_v >= keyring_min and keyring_v not in keyring_bad:
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import keyring
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else:
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keyring = None
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except (ImportError, pkg_resources.DistributionNotFound):
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keyring = None
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pickle = None
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# Python 2.5 compat fix
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if not hasattr(urlparse, 'parse_qsl'):
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import cgi
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urlparse.parse_qsl = cgi.parse_qsl
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from keystoneclient import access
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from keystoneclient.auth import base
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from keystoneclient import baseclient
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from keystoneclient import exceptions
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from keystoneclient.i18n import _, _LI, _LW
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from keystoneclient import session as client_session
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from keystoneclient import utils
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_logger = logging.getLogger(__name__)
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# These variables are moved and using them via httpclient is deprecated.
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# Maintain here for compatibility.
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USER_AGENT = client_session.USER_AGENT
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request = client_session.request
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class _FakeRequestSession(object):
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"""This object is a temporary hack that should be removed later.
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Keystoneclient has a cyclical dependency with its managers which is
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preventing it from being cleaned up correctly. This is always bad but when
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we switched to doing connection pooling this object wasn't getting cleaned
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either and so we had left over TCP connections hanging around.
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Until we can fix the client cleanup we rollback the use of a requests
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session and do individual connections like we used to.
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"""
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def request(self, *args, **kwargs):
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return requests.request(*args, **kwargs)
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class HTTPClient(baseclient.Client, base.BaseAuthPlugin):
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version = None
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@utils.positional(enforcement=utils.positional.WARN)
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def __init__(self, username=None, tenant_id=None, tenant_name=None,
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password=None, auth_url=None, region_name=None, endpoint=None,
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token=None, debug=False, auth_ref=None, use_keyring=False,
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force_new_token=False, stale_duration=None, user_id=None,
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user_domain_id=None, user_domain_name=None, domain_id=None,
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domain_name=None, project_id=None, project_name=None,
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project_domain_id=None, project_domain_name=None,
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trust_id=None, session=None, **kwargs):
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"""Construct a new http client
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:param string user_id: User ID for authentication. (optional)
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:param string username: Username for authentication. (optional)
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:param string user_domain_id: User's domain ID for authentication.
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(optional)
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:param string user_domain_name: User's domain name for authentication.
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(optional)
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:param string password: Password for authentication. (optional)
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:param string domain_id: Domain ID for domain scoping. (optional)
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:param string domain_name: Domain name for domain scoping. (optional)
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:param string project_id: Project ID for project scoping. (optional)
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:param string project_name: Project name for project scoping.
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(optional)
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:param string project_domain_id: Project's domain ID for project
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scoping. (optional)
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:param string project_domain_name: Project's domain name for project
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scoping. (optional)
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:param string auth_url: Identity service endpoint for authorization.
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:param string region_name: Name of a region to select when choosing an
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endpoint from the service catalog.
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:param integer timeout: DEPRECATED: use session. (optional)
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:param string endpoint: A user-supplied endpoint URL for the identity
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service. Lazy-authentication is possible for
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API service calls if endpoint is set at
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instantiation. (optional)
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:param string token: Token for authentication. (optional)
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:param string cacert: DEPRECATED: use session. (optional)
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:param string key: DEPRECATED: use session. (optional)
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:param string cert: DEPRECATED: use session. (optional)
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:param boolean insecure: DEPRECATED: use session. (optional)
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:param string original_ip: DEPRECATED: use session. (optional)
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:param boolean debug: DEPRECATED: use logging configuration. (optional)
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:param dict auth_ref: To allow for consumers of the client to manage
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their own caching strategy, you may initialize a
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client with a previously captured auth_reference
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(token). If there are keyword arguments passed
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that also exist in auth_ref, the value from the
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argument will take precedence.
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:param boolean use_keyring: Enables caching auth_ref into keyring.
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default: False (optional)
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:param boolean force_new_token: Keyring related parameter, forces
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request for new token.
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default: False (optional)
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:param integer stale_duration: Gap in seconds to determine if token
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from keyring is about to expire.
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default: 30 (optional)
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:param string tenant_name: Tenant name. (optional)
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The tenant_name keyword argument is
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deprecated, use project_name instead.
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:param string tenant_id: Tenant id. (optional)
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The tenant_id keyword argument is
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deprecated, use project_id instead.
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:param string trust_id: Trust ID for trust scoping. (optional)
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:param object session: A Session object to be used for
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communicating with the identity service.
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"""
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# set baseline defaults
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self.user_id = None
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self.username = None
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self.user_domain_id = None
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self.user_domain_name = None
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self.domain_id = None
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self.domain_name = None
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self.project_id = None
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self.project_name = None
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self.project_domain_id = None
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self.project_domain_name = None
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self.region_name = None
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self.auth_url = None
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self._endpoint = None
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self._management_url = None
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self.trust_id = None
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# if loading from a dictionary passed in via auth_ref,
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# load values from AccessInfo parsing that dictionary
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if auth_ref:
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self.auth_ref = access.AccessInfo.factory(**auth_ref)
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self.version = self.auth_ref.version
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self.user_id = self.auth_ref.user_id
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self.username = self.auth_ref.username
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self.user_domain_id = self.auth_ref.user_domain_id
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self.domain_id = self.auth_ref.domain_id
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self.domain_name = self.auth_ref.domain_name
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self.project_id = self.auth_ref.project_id
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self.project_name = self.auth_ref.project_name
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self.project_domain_id = self.auth_ref.project_domain_id
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self.auth_url = self.auth_ref.auth_url[0]
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self._management_url = self.auth_ref.management_url[0]
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self.auth_token_from_user = self.auth_ref.auth_token
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self.trust_id = self.auth_ref.trust_id
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if self.auth_ref.has_service_catalog():
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self.region_name = self.auth_ref.service_catalog.region_name
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else:
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self.auth_ref = None
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# allow override of the auth_ref defaults from explicit
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# values provided to the client
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# apply deprecated variables first, so modern variables override them
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if tenant_id:
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self.project_id = tenant_id
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if tenant_name:
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self.project_name = tenant_name
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# user-related attributes
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self.password = password
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if user_id:
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self.user_id = user_id
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if username:
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self.username = username
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if user_domain_id:
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self.user_domain_id = user_domain_id
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elif not (user_id or user_domain_name):
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self.user_domain_id = 'default'
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if user_domain_name:
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self.user_domain_name = user_domain_name
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# domain-related attributes
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if domain_id:
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self.domain_id = domain_id
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if domain_name:
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self.domain_name = domain_name
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# project-related attributes
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if project_id:
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self.project_id = project_id
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if project_name:
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self.project_name = project_name
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if project_domain_id:
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self.project_domain_id = project_domain_id
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elif not (project_id or project_domain_name):
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self.project_domain_id = 'default'
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if project_domain_name:
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self.project_domain_name = project_domain_name
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# trust-related attributes
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if trust_id:
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self.trust_id = trust_id
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# endpoint selection
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if auth_url:
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self.auth_url = auth_url.rstrip('/')
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if token:
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self.auth_token_from_user = token
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else:
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self.auth_token_from_user = None
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if endpoint:
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self._endpoint = endpoint.rstrip('/')
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if region_name:
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self.region_name = region_name
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self._auth_token = None
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if not session:
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kwargs['session'] = _FakeRequestSession()
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session = client_session.Session.construct(kwargs)
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session.auth = self
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super(HTTPClient, self).__init__(session=session)
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self.domain = ''
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self.debug_log = debug
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# keyring setup
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if use_keyring and keyring is None:
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_logger.warning(_LW('Failed to load keyring modules.'))
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self.use_keyring = use_keyring and keyring is not None
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self.force_new_token = force_new_token
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self.stale_duration = stale_duration or access.STALE_TOKEN_DURATION
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self.stale_duration = int(self.stale_duration)
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def get_token(self, session, **kwargs):
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return self.auth_token
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@property
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def auth_token(self):
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if self._auth_token:
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return self._auth_token
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if self.auth_ref:
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if self.auth_ref.will_expire_soon(self.stale_duration):
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self.authenticate()
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return self.auth_ref.auth_token
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if self.auth_token_from_user:
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return self.auth_token_from_user
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def get_endpoint(self, session, interface=None, **kwargs):
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if interface == 'public' or interface is base.AUTH_INTERFACE:
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return self.auth_url
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else:
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return self.management_url
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@auth_token.setter
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def auth_token(self, value):
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"""Override the auth_token.
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If an application sets auth_token explicitly then it will always be
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used and override any past or future retrieved token.
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"""
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self._auth_token = value
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@auth_token.deleter
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def auth_token(self):
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self._auth_token = None
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self.auth_token_from_user = None
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@property
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def service_catalog(self):
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"""Returns this client's service catalog."""
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return self.auth_ref.service_catalog
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def has_service_catalog(self):
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"""Returns True if this client provides a service catalog."""
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return self.auth_ref and self.auth_ref.has_service_catalog()
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@property
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def tenant_id(self):
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"""Provide read-only backwards compatibility for tenant_id.
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This is deprecated, use project_id instead.
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"""
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return self.project_id
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@property
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def tenant_name(self):
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"""Provide read-only backwards compatibility for tenant_name.
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This is deprecated, use project_name instead.
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"""
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return self.project_name
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@utils.positional(enforcement=utils.positional.WARN)
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def authenticate(self, username=None, password=None, tenant_name=None,
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tenant_id=None, auth_url=None, token=None,
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user_id=None, domain_name=None, domain_id=None,
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project_name=None, project_id=None, user_domain_id=None,
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user_domain_name=None, project_domain_id=None,
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project_domain_name=None, trust_id=None,
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region_name=None):
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"""Authenticate user.
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Uses the data provided at instantiation to authenticate against
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the Identity server. This may use either a username and password
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or token for authentication. If a tenant name or id was provided
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then the resulting authenticated client will be scoped to that
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tenant and contain a service catalog of available endpoints.
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With the v2.0 API, if a tenant name or ID is not provided, the
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authentication token returned will be 'unscoped' and limited in
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capabilities until a fully-scoped token is acquired.
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With the v3 API, if a domain name or id was provided then the resulting
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authenticated client will be scoped to that domain. If a project name
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or ID is not provided, and the authenticating user has a default
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project configured, the authentication token returned will be 'scoped'
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to the default project. Otherwise, the authentication token returned
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will be 'unscoped' and limited in capabilities until a fully-scoped
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token is acquired.
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With the v3 API, with the OS-TRUST extension enabled, the trust_id can
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be provided to allow project-specific role delegation between users
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If successful, sets the self.auth_ref and self.auth_token with
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the returned token. If not already set, will also set
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self.management_url from the details provided in the token.
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:returns: ``True`` if authentication was successful.
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:raises keystoneclient.exceptions.AuthorizationFailure: if unable to
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authenticate or validate the existing authorization token
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:raises keystoneclient.exceptions.ValueError: if insufficient
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parameters are used.
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If keyring is used, token is retrieved from keyring instead.
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Authentication will only be necessary if any of the following
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conditions are met:
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* keyring is not used
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* if token is not found in keyring
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* if token retrieved from keyring is expired or about to
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expired (as determined by stale_duration)
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* if force_new_token is true
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"""
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auth_url = auth_url or self.auth_url
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user_id = user_id or self.user_id
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username = username or self.username
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password = password or self.password
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user_domain_id = user_domain_id or self.user_domain_id
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user_domain_name = user_domain_name or self.user_domain_name
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domain_id = domain_id or self.domain_id
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domain_name = domain_name or self.domain_name
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project_id = project_id or tenant_id or self.project_id
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project_name = project_name or tenant_name or self.project_name
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project_domain_id = project_domain_id or self.project_domain_id
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project_domain_name = project_domain_name or self.project_domain_name
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trust_id = trust_id or self.trust_id
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region_name = region_name or self.region_name
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if not token:
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token = self.auth_token_from_user
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if (not token and self.auth_ref and not
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self.auth_ref.will_expire_soon(self.stale_duration)):
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token = self.auth_ref.auth_token
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kwargs = {
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'auth_url': auth_url,
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'user_id': user_id,
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'username': username,
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'user_domain_id': user_domain_id,
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'user_domain_name': user_domain_name,
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'domain_id': domain_id,
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'domain_name': domain_name,
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'project_id': project_id,
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'project_name': project_name,
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'project_domain_id': project_domain_id,
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'project_domain_name': project_domain_name,
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'token': token,
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'trust_id': trust_id,
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}
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(keyring_key, auth_ref) = self.get_auth_ref_from_keyring(**kwargs)
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new_token_needed = False
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if auth_ref is None or self.force_new_token:
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new_token_needed = True
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kwargs['password'] = password
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resp = self.get_raw_token_from_identity_service(**kwargs)
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if isinstance(resp, access.AccessInfo):
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self.auth_ref = resp
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else:
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self.auth_ref = access.AccessInfo.factory(*resp)
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# NOTE(jamielennox): The original client relies on being able to
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# push the region name into the service catalog but new auth
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# it in.
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if region_name:
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self.auth_ref.service_catalog._region_name = region_name
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else:
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self.auth_ref = auth_ref
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self.process_token(region_name=region_name)
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if new_token_needed:
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self.store_auth_ref_into_keyring(keyring_key)
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return True
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def _build_keyring_key(self, **kwargs):
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"""Create a unique key for keyring.
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Used to store and retrieve auth_ref from keyring.
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Returns a slash-separated string of values ordered by key name.
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"""
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return '/'.join([kwargs[k] or '?' for k in sorted(kwargs.keys())])
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def get_auth_ref_from_keyring(self, **kwargs):
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"""Retrieve auth_ref from keyring.
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If auth_ref is found in keyring, (keyring_key, auth_ref) is returned.
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Otherwise, (keyring_key, None) is returned.
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:returns: (keyring_key, auth_ref) or (keyring_key, None)
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:returns: or (None, None) if use_keyring is not set in the object
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"""
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keyring_key = None
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auth_ref = None
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if self.use_keyring:
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keyring_key = self._build_keyring_key(**kwargs)
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try:
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auth_ref = keyring.get_password("keystoneclient_auth",
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keyring_key)
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if auth_ref:
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auth_ref = pickle.loads(auth_ref)
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if auth_ref.will_expire_soon(self.stale_duration):
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# token has expired, don't use it
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auth_ref = None
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except Exception as e:
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auth_ref = None
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_logger.warning(
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_LW('Unable to retrieve token from keyring %s'), e)
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return (keyring_key, auth_ref)
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def store_auth_ref_into_keyring(self, keyring_key):
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"""Store auth_ref into keyring.
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"""
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if self.use_keyring:
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try:
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keyring.set_password("keystoneclient_auth",
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keyring_key,
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pickle.dumps(self.auth_ref))
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except Exception as e:
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_logger.warning(
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_LW("Failed to store token into keyring %s"), e)
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|
|
def _process_management_url(self, region_name):
|
|
try:
|
|
self._management_url = self.auth_ref.service_catalog.url_for(
|
|
service_type='identity',
|
|
endpoint_type='admin',
|
|
region_name=region_name)
|
|
except exceptions.EndpointNotFound:
|
|
pass
|
|
|
|
def process_token(self, region_name=None):
|
|
"""Extract and process information from the new auth_ref.
|
|
|
|
And set the relevant authentication information.
|
|
"""
|
|
# if we got a response without a service catalog, set the local
|
|
# list of tenants for introspection, and leave to client user
|
|
# to determine what to do. Otherwise, load up the service catalog
|
|
if self.auth_ref.project_scoped:
|
|
if not self.auth_ref.tenant_id:
|
|
raise exceptions.AuthorizationFailure(
|
|
_("Token didn't provide tenant_id"))
|
|
self._process_management_url(region_name)
|
|
self.project_name = self.auth_ref.tenant_name
|
|
self.project_id = self.auth_ref.tenant_id
|
|
|
|
if not self.auth_ref.user_id:
|
|
raise exceptions.AuthorizationFailure(
|
|
_("Token didn't provide user_id"))
|
|
|
|
self.user_id = self.auth_ref.user_id
|
|
|
|
self.auth_domain_id = self.auth_ref.domain_id
|
|
self.auth_tenant_id = self.auth_ref.tenant_id
|
|
self.auth_user_id = self.auth_ref.user_id
|
|
|
|
@property
|
|
def management_url(self):
|
|
return self._endpoint or self._management_url
|
|
|
|
@management_url.setter
|
|
def management_url(self, value):
|
|
# NOTE(jamielennox): it's debatable here whether we should set
|
|
# _endpoint or _management_url. As historically management_url was set
|
|
# permanently setting _endpoint would better match that behaviour.
|
|
self._endpoint = value
|
|
|
|
@utils.positional(enforcement=utils.positional.WARN)
|
|
def get_raw_token_from_identity_service(self, auth_url, username=None,
|
|
password=None, tenant_name=None,
|
|
tenant_id=None, token=None,
|
|
user_id=None, user_domain_id=None,
|
|
user_domain_name=None,
|
|
domain_id=None, domain_name=None,
|
|
project_id=None, project_name=None,
|
|
project_domain_id=None,
|
|
project_domain_name=None,
|
|
trust_id=None):
|
|
"""Authenticate against the Identity API and get a token.
|
|
|
|
Not implemented here because auth protocols should be API
|
|
version-specific.
|
|
|
|
Expected to authenticate or validate an existing authentication
|
|
reference already associated with the client. Invoking this call
|
|
*always* makes a call to the Identity service.
|
|
|
|
:returns: (``resp``, ``body``)
|
|
|
|
"""
|
|
raise NotImplementedError
|
|
|
|
def serialize(self, entity):
|
|
return jsonutils.dumps(entity)
|
|
|
|
@staticmethod
|
|
def _decode_body(resp):
|
|
if resp.text:
|
|
try:
|
|
body_resp = jsonutils.loads(resp.text)
|
|
except (ValueError, TypeError):
|
|
body_resp = None
|
|
_logger.debug("Could not decode JSON from body: %s",
|
|
resp.text)
|
|
else:
|
|
_logger.debug("No body was returned.")
|
|
body_resp = None
|
|
|
|
return body_resp
|
|
|
|
def request(self, url, method, **kwargs):
|
|
"""Send an http request with the specified characteristics.
|
|
|
|
Wrapper around requests.request to handle tasks such as
|
|
setting headers, JSON encoding/decoding, and error handling.
|
|
"""
|
|
|
|
try:
|
|
kwargs['json'] = kwargs.pop('body')
|
|
except KeyError:
|
|
pass
|
|
|
|
kwargs.setdefault('authenticated', False)
|
|
resp = super(HTTPClient, self).request(url, method, **kwargs)
|
|
return resp, self._decode_body(resp)
|
|
|
|
def _cs_request(self, url, method, management=True, **kwargs):
|
|
"""Makes an authenticated request to keystone endpoint by
|
|
concatenating self.management_url and url and passing in method and
|
|
any associated kwargs.
|
|
"""
|
|
# NOTE(jamielennox): remember that if you use the legacy client mode
|
|
# (you create a client without a session) then this HTTPClient object
|
|
# is the auth plugin you are using. Values in the endpoint_filter may
|
|
# be ignored and you should look at get_endpoint to figure out what.
|
|
interface = 'admin' if management else 'public'
|
|
endpoint_filter = kwargs.setdefault('endpoint_filter', {})
|
|
endpoint_filter.setdefault('service_type', 'identity')
|
|
endpoint_filter.setdefault('interface', interface)
|
|
|
|
if self.version:
|
|
endpoint_filter.setdefault('version', self.version)
|
|
|
|
if self.region_name:
|
|
endpoint_filter.setdefault('region_name', self.region_name)
|
|
|
|
kwargs.setdefault('authenticated', None)
|
|
try:
|
|
return self.request(url, method, **kwargs)
|
|
except exceptions.MissingAuthPlugin:
|
|
_logger.info(_LI('Cannot get authenticated endpoint without an '
|
|
'auth plugin'))
|
|
raise exceptions.AuthorizationFailure(
|
|
_('Current authorization does not have a known management '
|
|
'url'))
|
|
|
|
def get(self, url, **kwargs):
|
|
return self._cs_request(url, 'GET', **kwargs)
|
|
|
|
def head(self, url, **kwargs):
|
|
return self._cs_request(url, 'HEAD', **kwargs)
|
|
|
|
def post(self, url, **kwargs):
|
|
return self._cs_request(url, 'POST', **kwargs)
|
|
|
|
def put(self, url, **kwargs):
|
|
return self._cs_request(url, 'PUT', **kwargs)
|
|
|
|
def patch(self, url, **kwargs):
|
|
return self._cs_request(url, 'PATCH', **kwargs)
|
|
|
|
def delete(self, url, **kwargs):
|
|
return self._cs_request(url, 'DELETE', **kwargs)
|
|
|
|
# DEPRECATIONS: The following methods are no longer directly supported
|
|
# but maintained for compatibility purposes.
|
|
|
|
deprecated_session_variables = {'original_ip': None,
|
|
'cert': None,
|
|
'timeout': None,
|
|
'verify_cert': 'verify'}
|
|
|
|
def __getattr__(self, name):
|
|
# FIXME(jamielennox): provide a proper deprecated warning
|
|
try:
|
|
var_name = self.deprecated_session_variables[name]
|
|
except KeyError:
|
|
raise AttributeError(_("Unknown Attribute: %s") % name)
|
|
|
|
return getattr(self.session, var_name or name)
|
|
|
|
def __setattr__(self, name, val):
|
|
# FIXME(jamielennox): provide a proper deprecated warning
|
|
try:
|
|
var_name = self.deprecated_session_variables[name]
|
|
except KeyError:
|
|
super(HTTPClient, self).__setattr__(name, val)
|
|
else:
|
|
setattr(self.session, var_name or name)
|