Files
deb-python-ceilometerclient/ceilometerclient/client.py
Eugeniya Kudryashova 2ddcff4ee2 Add endpoint opt into auth_plugin
Endpoint should be present in auth_plugin options to allow
connect to ceilometer through specified endpoint and token

Closes-Bug: #1354507
Change-Id: I0aaafc6f599a67b242ade25efb3e667738bd71fd
2014-08-08 19:01:59 +03:00

285 lines
11 KiB
Python

# 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 keystoneclient.auth.identity import v2 as v2_auth
from keystoneclient.auth.identity import v3 as v3_auth
from keystoneclient import discover
from keystoneclient import session
from ceilometerclient.common import utils
from ceilometerclient import exc
from ceilometerclient.openstack.common.apiclient import auth
from ceilometerclient.openstack.common.apiclient import exceptions
def _get_keystone_session(**kwargs):
# TODO(fabgia): the heavy lifting here should be really done by Keystone.
# Unfortunately Keystone does not support a richer method to perform
# discovery and return a single viable URL. A bug against Keystone has
# been filed: https://bugs.launchpad.net/pyhton-keystoneclient/+bug/1330677
# first create a Keystone session
cacert = kwargs.pop('cacert', None)
cert = kwargs.pop('cert', None)
key = kwargs.pop('key', None)
insecure = kwargs.pop('insecure', False)
auth_url = kwargs.pop('auth_url', None)
project_id = kwargs.pop('project_id', None)
project_name = kwargs.pop('project_name', None)
if insecure:
verify = False
else:
verify = cacert or True
if cert and key:
# passing cert and key together is deprecated in favour of the
# requests lib form of having the cert and key as a tuple
cert = (cert, key)
# create the keystone client session
ks_session = session.Session(verify=verify, cert=cert)
try:
# discover the supported keystone versions using the auth endpoint url
ks_discover = discover.Discover(session=ks_session, auth_url=auth_url)
# Determine which authentication plugin to use.
v2_auth_url = ks_discover.url_for('2.0')
v3_auth_url = ks_discover.url_for('3.0')
except Exception:
raise exc.CommandError('Unable to determine the Keystone version '
'to authenticate with using the given '
'auth_url: %s' % auth_url)
username = kwargs.pop('username', None)
user_id = kwargs.pop('user_id', None)
user_domain_name = kwargs.pop('user_domain_name', None)
user_domain_id = kwargs.pop('user_domain_id', None)
project_domain_name = kwargs.pop('project_domain_name', None)
project_domain_id = kwargs.pop('project_domain_id', None)
auth = None
if v3_auth_url and v2_auth_url:
# the auth_url does not have the versions specified
# e.g. http://no.where:5000
# Keystone will return both v2 and v3 as viable options
# but we need to decide based on the arguments passed
# what version is callable
if (user_domain_name or user_domain_id or project_domain_name or
project_domain_id):
# domain is supported only in v3
auth = v3_auth.Password(
v3_auth_url,
username=username,
user_id=user_id,
user_domain_name=user_domain_name,
user_domain_id=user_domain_id,
project_domain_name=project_domain_name,
project_domain_id=project_domain_id,
**kwargs)
else:
# no domain, then use v2
auth = v2_auth.Password(
v2_auth_url,
username,
kwargs.pop('password', None),
tenant_id=project_id,
tenant_name=project_name)
elif v3_auth_url:
# the auth_url as v3 specified
# e.g. http://no.where:5000/v3
# Keystone will return only v3 as viable option
auth = v3_auth.Password(
v3_auth_url,
username=username,
user_id=user_id,
user_domain_name=user_domain_name,
user_domain_id=user_domain_id,
project_domain_name=project_domain_name,
project_domain_id=project_domain_id,
**kwargs)
elif v2_auth_url:
# the auth_url as v2 specified
# e.g. http://no.where:5000/v2.0
# Keystone will return only v2 as viable option
auth = v2_auth.Password(
v2_auth_url,
username,
kwargs.pop('password', None),
tenant_id=project_id,
tenant_name=project_name)
else:
raise exc.CommandError('Unable to determine the Keystone version '
'to authenticate with using the given '
'auth_url.')
ks_session.auth = auth
return ks_session
def _get_endpoint(ks_session, **kwargs):
"""Get an endpoint using the provided keystone session."""
# set service specific endpoint types
endpoint_type = kwargs.get('endpoint_type') or 'publicURL'
service_type = kwargs.get('service_type') or 'metering'
endpoint = ks_session.get_endpoint(service_type=service_type,
endpoint_type=endpoint_type,
region_name=kwargs.get('region_name'))
return endpoint
class AuthPlugin(auth.BaseAuthPlugin):
opt_names = ['tenant_id', 'region_name', 'auth_token',
'service_type', 'endpoint_type', 'cacert',
'auth_url', 'insecure', 'cert_file', 'key_file',
'cert', 'key', 'tenant_name', 'project_name',
'project_id', 'user_domain_id', 'user_domain_name',
'password', 'username', 'endpoint']
def __init__(self, auth_system=None, **kwargs):
self.opt_names.extend(self.common_opt_names)
super(AuthPlugin, self).__init__(auth_system, **kwargs)
def _do_authenticate(self, http_client):
if self.opts.get('token') and self.opts.get('endpoint'):
token = self.opts.get('token')
endpoint = self.opts.get('endpoint')
else:
project_id = self.opts.get('project_id') \
or self.opts.get('tenant_id')
project_name = (self.opts.get('project_name') or
self.opts.get('tenant_name'))
ks_kwargs = {
'username': self.opts.get('username'),
'password': self.opts.get('password'),
'user_id': self.opts.get('user_id'),
'user_domain_id': self.opts.get('user_domain_id'),
'user_domain_name': self.opts.get('user_domain_name'),
'project_id': project_id,
'project_name': project_name,
'project_domain_name': self.opts.get('project_domain_name'),
'project_domain_id': self.opts.get('project_domain_id'),
'auth_url': self.opts.get('auth_url'),
'cacert': self.opts.get('cacert'),
'cert': self.opts.get('cert'),
'key': self.opts.get('key'),
'insecure': self.opts.get('insecure')
}
# retrieve session
ks_session = _get_keystone_session(**ks_kwargs)
token = lambda: ks_session.get_token()
endpoint = self.opts.get('endpoint') or \
_get_endpoint(ks_session, **ks_kwargs)
self.opts['token'] = token()
self.opts['endpoint'] = endpoint
def token_and_endpoint(self, endpoint_type, service_type):
token = self.opts.get('token')
if callable(token):
token = token()
return token, self.opts.get('endpoint')
def sufficient_options(self):
"""Check if all required options are present.
:raises: AuthPluginOptionsMissing
"""
missing = not ((self.opts.get('token') and
self.opts.get('endpoint')) or
(self.opts.get('username')
and self.opts.get('password')
and self.opts.get('auth_url') and
(self.opts.get('tenant_id')
or self.opts.get('tenant_name'))))
if missing:
missing_opts = []
opts = ['token', 'endpoint', 'username', 'password', 'auth_url',
'tenant_id', 'tenant_name']
for opt in opts:
if not self.opts.get(opt):
missing_opts.append(opt)
raise exceptions.AuthPluginOptionsMissing(missing_opts)
def Client(version, *args, **kwargs):
module = utils.import_versioned_module(version, 'client')
client_class = getattr(module, 'Client')
return client_class(*args, **kwargs)
def get_client(version, **kwargs):
"""Get an authtenticated client, based on the credentials
in the keyword args.
:param api_version: the API version to use ('1' or '2')
:param kwargs: keyword args containing credentials, either:
* os_auth_token: pre-existing token to re-use
* ceilometer_url: ceilometer API endpoint
or:
* os_username: name of user
* os_password: user's password
* os_user_id: user's id
* os_user_domain_id: the domain id of the user
* os_user_domain_name: the domain name of the user
* os_project_id: the user project id
* os_tenant_id: V2 alternative to os_project_id
* os_project_name: the user project name
* os_tenant_name: V2 alternative to os_project_name
* os_project_domain_name: domain name for the user project
* os_project_domain_id: domain id for the user project
* os_auth_url: endpoint to authenticate against
* os_cert|os_cacert: path of CA TLS certificate
* os_key: SSL private key
* insecure: allow insecure SSL (no cert verification)
"""
endpoint = kwargs.get('ceilometer_url')
cli_kwargs = {
'username': kwargs.get('os_username'),
'password': kwargs.get('os_password'),
'tenant_id': kwargs.get('os_tenant_id'),
'tenant_name': kwargs.get('os_tenant_name'),
'auth_url': kwargs.get('os_auth_url'),
'region_name': kwargs.get('os_region_name'),
'service_type': kwargs.get('os_service_type'),
'endpoint_type': kwargs.get('os_endpoint_type'),
'cacert': kwargs.get('os_cacert'),
'cert_file': kwargs.get('os_cert'),
'key_file': kwargs.get('os_key'),
'token': kwargs.get('os_auth_token'),
}
cli_kwargs.update(kwargs)
return Client(version, endpoint, **cli_kwargs)
def get_auth_plugin(endpoint, **kwargs):
auth_plugin = AuthPlugin(
auth_url=kwargs.get('auth_url'),
service_type=kwargs.get('service_type'),
token=kwargs.get('token'),
endpoint_type=kwargs.get('endpoint_type'),
cacert=kwargs.get('ca_file'),
tenant_id=kwargs.get('project_id') or kwargs.get('tenant_id'),
endpoint=endpoint,
username=kwargs.get('username'),
password=kwargs.get('password'),
tenant_name=kwargs.get('tenant_name'),
)
return auth_plugin