text: #    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.
  
  import glanceclient
  from keystoneauth1 import loading
  from keystoneauth1 import session
  import os
  import os_client_config
  from tempest.lib.cli import base
  
  
  def credentials(cloud='devstack-admin'):
      """Retrieves credentials to run functional tests
  
      Credentials are either read via os-client-config from the environment
      or from a config file ('clouds.yaml'). Environment variables override
      those from the config file.
  
      devstack produces a clouds.yaml with two named clouds - one named
      'devstack' which has user privs and one named 'devstack-admin' which
      has admin privs. This function will default to getting the devstack-admin
      cloud as that is the current expected behavior.
      """
  
      return os_client_config.OpenStackConfig().get_one_cloud(cloud=cloud)
  
  
  class ClientTestBase(base.ClientTestBase):
      """This is a first pass at a simple read only python-glanceclient test.
  
      This only exercises client commands that are read only.
      This should test commands:
      * as a regular user
      * as an admin user
      * with and without optional parameters
      * initially just check return codes, and later test command outputs
  
      """
  
      def _get_clients(self):
          self.creds = credentials().get_auth_args()
          venv_name = os.environ.get('OS_TESTENV_NAME', 'functional')
          cli_dir = os.environ.get(
              'OS_GLANCECLIENT_EXEC_DIR',
              os.path.join(os.path.abspath('.'), '.tox/%s/bin' % venv_name))
  
          return base.CLIClient(
              username=self.creds['username'],
              password=self.creds['password'],
              tenant_name=self.creds['project_name'],
              user_domain_id=self.creds['user_domain_id'],
              project_domain_id=self.creds['project_domain_id'],
              uri=self.creds['auth_url'],
              cli_dir=cli_dir)
  
      def glance(self, *args, **kwargs):
          return self.clients.glance(*args,
                                     **kwargs)
  
      def glance_pyclient(self):
          ks_creds = dict(
              auth_url=self.creds["auth_url"],
              username=self.creds["username"],
              password=self.creds["password"],
              project_name=self.creds["project_name"],
              user_domain_id=self.creds["user_domain_id"],
              project_domain_id=self.creds["project_domain_id"])
          keystoneclient = self.Keystone(**ks_creds)
          return self.Glance(keystoneclient)
  
      class Keystone(object):
          def __init__(self, **kwargs):
              loader = loading.get_plugin_loader("password")
              auth = loader.load_from_options(**kwargs)
              self.session = session.Session(auth=auth)
  
      class Glance(object):
          def __init__(self, keystone, version="2"):
              self.glance = glanceclient.Client(
                  version,
                  session=keystone.session)
  
          def find(self, image_name):
              for image in self.glance.images.list():
                  if image.name == image_name:
                      return image
              return None
  