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