328 lines
12 KiB
Python
Executable File
328 lines
12 KiB
Python
Executable File
# 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 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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from keystoneauth1.access import access as ka_access
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from keystoneauth1 import exceptions as ka_exception
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from keystoneauth1.identity import access as ka_access_plugin
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from keystoneauth1.identity import v3 as ka_v3
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from keystoneauth1 import loading as ka_loading
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import keystoneclient.exceptions as kc_exception
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from keystoneclient.v3 import client as kc_v3
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from oslo_log import log as logging
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from magnum.common import exception
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import magnum.conf
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from magnum.conf import keystone as ksconf
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from magnum.i18n import _
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CONF = magnum.conf.CONF
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LOG = logging.getLogger(__name__)
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class KeystoneClientV3(object):
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"""Keystone client wrapper so we can encapsulate logic in one place."""
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def __init__(self, context):
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self.context = context
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self._client = None
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self._domain_admin_auth = None
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self._domain_admin_session = None
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self._domain_admin_client = None
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self._trustee_domain_id = None
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self._session = None
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@property
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def auth_url(self):
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# FIXME(pauloewerton): auth_url should be retrieved from keystone_auth
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# section by default
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conf = CONF[ksconf.CFG_LEGACY_GROUP]
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auth_uri = (getattr(conf, 'www_authenticate_uri', None) or
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getattr(conf, 'auth_uri', None))
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if auth_uri:
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auth_uri = auth_uri.replace('v2.0', 'v3')
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return auth_uri
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@property
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def auth_token(self):
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return self.session.get_token()
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@property
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def session(self):
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if self._session:
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return self._session
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auth = self._get_auth()
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session = self._get_session(auth)
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self._session = session
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return session
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def _get_session(self, auth):
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session = ka_loading.load_session_from_conf_options(
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CONF, ksconf.CFG_GROUP, auth=auth)
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return session
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def _get_auth(self):
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if self.context.auth_token_info:
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access_info = ka_access.create(body=self.context.auth_token_info,
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auth_token=self.context.auth_token)
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auth = ka_access_plugin.AccessInfoPlugin(access_info)
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elif self.context.auth_token:
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auth = ka_v3.Token(auth_url=self.auth_url,
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token=self.context.auth_token)
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elif self.context.trust_id:
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auth_info = {
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'auth_url': self.auth_url,
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'username': self.context.user_name,
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'password': self.context.password,
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'user_domain_id': self.context.user_domain_id,
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'user_domain_name': self.context.user_domain_name,
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'trust_id': self.context.trust_id
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}
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auth = ka_v3.Password(**auth_info)
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elif self.context.is_admin:
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try:
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auth = ka_loading.load_auth_from_conf_options(
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CONF, ksconf.CFG_GROUP)
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except ka_exception.MissingRequiredOptions:
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auth = self._get_legacy_auth()
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else:
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msg = ('Keystone API connection failed: no password, '
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'trust_id or token found.')
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LOG.error(msg)
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raise exception.AuthorizationFailure(client='keystone',
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message='reason %s' % msg)
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return auth
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def _get_legacy_auth(self):
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LOG.warning('Auth plugin and its options for service user '
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'must be provided in [%(new)s] section. '
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'Using values from [%(old)s] section is '
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'deprecated.', {'new': ksconf.CFG_GROUP,
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'old': ksconf.CFG_LEGACY_GROUP})
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conf = getattr(CONF, ksconf.CFG_LEGACY_GROUP)
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# FIXME(htruta, pauloewerton): Conductor layer does not have
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# new v3 variables, such as project_name and project_domain_id.
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# The use of admin_* variables is related to Identity API v2.0,
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# which is now deprecated. We should also stop using hard-coded
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# domain info, as well as variables that refer to `tenant`,
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# as they are also v2 related.
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auth = ka_v3.Password(auth_url=self.auth_url,
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username=conf.admin_user,
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password=conf.admin_password,
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project_name=conf.admin_tenant_name,
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project_domain_id='default',
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user_domain_id='default')
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return auth
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@property
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def client(self):
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if self._client:
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return self._client
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client = kc_v3.Client(session=self.session,
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trust_id=self.context.trust_id)
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self._client = client
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return client
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@property
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def domain_admin_auth(self):
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user_domain_id = (
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CONF.trust.trustee_domain_admin_domain_id or
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CONF.trust.trustee_domain_id
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)
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user_domain_name = (
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CONF.trust.trustee_domain_admin_domain_name or
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CONF.trust.trustee_domain_name
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)
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if not self._domain_admin_auth:
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self._domain_admin_auth = ka_v3.Password(
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auth_url=self.auth_url,
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user_id=CONF.trust.trustee_domain_admin_id,
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username=CONF.trust.trustee_domain_admin_name,
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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=CONF.trust.trustee_domain_id,
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domain_name=CONF.trust.trustee_domain_name,
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password=CONF.trust.trustee_domain_admin_password)
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return self._domain_admin_auth
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@property
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def domain_admin_session(self):
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if not self._domain_admin_session:
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session = ka_loading.session.Session().load_from_options(
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auth=self.domain_admin_auth,
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insecure=CONF[ksconf.CFG_LEGACY_GROUP].insecure,
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cacert=CONF[ksconf.CFG_LEGACY_GROUP].cafile,
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key=CONF[ksconf.CFG_LEGACY_GROUP].keyfile,
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cert=CONF[ksconf.CFG_LEGACY_GROUP].certfile)
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self._domain_admin_session = session
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return self._domain_admin_session
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@property
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def domain_admin_client(self):
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if not self._domain_admin_client:
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self._domain_admin_client = kc_v3.Client(
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session=self.domain_admin_session
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)
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return self._domain_admin_client
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@property
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def trustee_domain_id(self):
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if not self._trustee_domain_id:
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try:
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access = self.domain_admin_auth.get_access(
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self.domain_admin_session
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)
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except kc_exception.Unauthorized:
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msg = "Keystone client authentication failed"
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LOG.error(msg)
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raise exception.AuthorizationFailure(client='keystone',
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message='reason: %s' %
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msg)
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self._trustee_domain_id = access.domain_id
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return self._trustee_domain_id
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def create_trust(self, trustee_user):
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trustor_user_id = self.session.get_user_id()
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trustor_project_id = self.session.get_project_id()
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# inherit the role of the trustor, unless set CONF.trust.roles
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if CONF.trust.roles:
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roles = CONF.trust.roles
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else:
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roles = self.context.roles
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try:
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trust = self.client.trusts.create(
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trustor_user=trustor_user_id,
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project=trustor_project_id,
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trustee_user=trustee_user,
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impersonation=True,
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delegation_depth=0,
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role_names=roles)
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except Exception:
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LOG.exception('Failed to create trust')
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raise exception.TrustCreateFailed(
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trustee_user_id=trustee_user)
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return trust
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def delete_trust(self, context, cluster):
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if cluster.trust_id is None:
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return
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# Trust can only be deleted by the user who creates it. So when
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# other users in the same project want to delete the cluster, we need
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# use the trustee which can impersonate the trustor to delete the
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# trust.
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if context.user_id == cluster.user_id:
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client = self.client
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else:
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auth = ka_v3.Password(auth_url=self.auth_url,
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user_id=cluster.trustee_user_id,
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password=cluster.trustee_password,
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trust_id=cluster.trust_id)
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sess = ka_loading.session.Session().load_from_options(
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auth=auth,
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insecure=CONF[ksconf.CFG_LEGACY_GROUP].insecure,
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cacert=CONF[ksconf.CFG_LEGACY_GROUP].cafile,
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key=CONF[ksconf.CFG_LEGACY_GROUP].keyfile,
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cert=CONF[ksconf.CFG_LEGACY_GROUP].certfile)
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client = kc_v3.Client(session=sess)
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try:
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client.trusts.delete(cluster.trust_id)
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except kc_exception.NotFound:
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pass
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except Exception:
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LOG.exception('Failed to delete trust')
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raise exception.TrustDeleteFailed(trust_id=cluster.trust_id)
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def create_trustee(self, username, password):
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domain_id = self.trustee_domain_id
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try:
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user = self.domain_admin_client.users.create(
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name=username,
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password=password,
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domain=domain_id)
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except Exception:
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LOG.exception('Failed to create trustee')
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raise exception.TrusteeCreateFailed(username=username,
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domain_id=domain_id)
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return user
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def delete_trustee(self, trustee_id):
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try:
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self.domain_admin_client.users.delete(trustee_id)
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except kc_exception.NotFound:
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pass
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except Exception:
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LOG.exception('Failed to delete trustee')
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raise exception.TrusteeDeleteFailed(trustee_id=trustee_id)
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def get_validate_region_name(self, region_name):
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if region_name is None:
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message = _("region_name needs to be configured in magnum.conf")
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raise exception.InvalidParameterValue(message)
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"""matches the region of a public endpoint for the Keystone
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service."""
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try:
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regions = self.client.regions.list()
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except kc_exception.NotFound:
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pass
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except Exception:
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LOG.exception('Failed to list regions')
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raise exception.RegionsListFailed()
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region_list = []
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for region in regions:
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region_list.append(region.id)
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if region_name not in region_list:
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raise exception.InvalidParameterValue(_(
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'region_name %(region_name)s is invalid, '
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'expecting a region_name in %(region_name_list)s.') % {
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'region_name': region_name,
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'region_name_list': '/'.join(
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region_list + ['unspecified'])})
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return region_name
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def is_octavia_enabled():
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"""Check if Octavia service is deployed in the cloud.
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Octavia is already an official LBaaS solution for Openstack
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(https://governance.openstack.org/tc/reference/projects/octavia.html) and
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will deprecate the neutron-lbaas extension starting from Queens release.
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We use Octavia instead of Neutron LBaaS API for load balancing
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functionality for k8s cluster if Octavia service is deployed and enabled
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in the cloud.
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"""
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# Put the import here to avoid circular importing.
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from magnum.common import context
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admin_context = context.make_admin_context()
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keystone = KeystoneClientV3(admin_context)
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try:
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octavia_svc = keystone.client.services.list(type='load-balancer')
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except Exception:
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LOG.exception('Failed to list services')
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raise exception.ServicesListFailed()
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# Always assume there is only one load balancing service configured.
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if octavia_svc and octavia_svc[0].enabled:
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return True
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return False
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