Add additional support for --or-show

Add --or-show for the following:
  * v2 roles
  * v2 projects

Change-Id: Ibbae19cda668575b9527fbd259f1298c48b8265b

openstackclient/identity/v2_0/project.py

@@ -63,6 +63,11 @@ class CreateProject(show.ShowOne):
             help=_('Property to add for this project '
                    '(repeat option to set multiple properties)'),
         )
+        parser.add_argument(
+            '--or-show',
+            action='store_true',
+            help=_('Return existing project'),
+        )
         return parser
 
     def take_action(self, parsed_args):
@@ -76,12 +81,22 @@ class CreateProject(show.ShowOne):
         if parsed_args.property:
             kwargs = parsed_args.property.copy()
 
+        try:
             project = identity_client.tenants.create(
                 parsed_args.name,
                 description=parsed_args.description,
                 enabled=enabled,
                 **kwargs
             )
+        except ksc_exc.Conflict as e:
+            if parsed_args.or_show:
+                project = utils.find_resource(
+                    identity_client.tenants,
+                    parsed_args.name,
+                )
+                self.log.info('Returning existing project %s', project.name)
+            else:
+                raise e
 
         info = {}
         info.update(project._info)

openstackclient/identity/v2_0/role.py

@@ -21,6 +21,7 @@ import six
 from cliff import command
 from cliff import lister
 from cliff import show
+from keystoneclient.openstack.common.apiclient import exceptions as ksc_exc
 
 from openstackclient.common import exceptions
 from openstackclient.common import utils
@@ -81,12 +82,27 @@ class CreateRole(show.ShowOne):
             'role_name',
             metavar='<role-name>',
             help=_('New role name'))
+        parser.add_argument(
+            '--or-show',
+            action='store_true',
+            help=_('Return existing role'),
+        )
         return parser
 
     def take_action(self, parsed_args):
         self.log.debug('take_action(%s)', parsed_args)
         identity_client = self.app.client_manager.identity
+        try:
             role = identity_client.roles.create(parsed_args.role_name)
+        except ksc_exc.Conflict as e:
+            if parsed_args.or_show:
+                role = utils.find_resource(
+                    identity_client.roles,
+                    parsed_args.role_name,
+                )
+                self.log.info('Returning existing role %s', role.name)
+            else:
+                raise e
 
         info = {}
         info.update(role._info)

openstackclient/tests/identity/v2_0/test_project.py

@@ -15,6 +15,8 @@
 
 import copy
 
+from keystoneclient.openstack.common.apiclient import exceptions as ksc_exc
+
 from openstackclient.identity.v2_0 import project
 from openstackclient.tests import fakes
 from openstackclient.tests.identity.v2_0 import fakes as identity_fakes
@@ -219,6 +221,89 @@ class TestProjectCreate(TestProject):
         )
         self.assertEqual(data, datalist)
 
+    def test_project_create_or_show_exists(self):
+        def _raise_conflict(*args, **kwargs):
+            raise ksc_exc.Conflict(None)
+
+        # need to make this throw an exception...
+        self.projects_mock.create.side_effect = _raise_conflict
+
+        self.projects_mock.get.return_value = fakes.FakeResource(
+            None,
+            copy.deepcopy(identity_fakes.PROJECT),
+            loaded=True,
+        )
+
+        arglist = [
+            '--or-show',
+            identity_fakes.project_name,
+        ]
+        verifylist = [
+            ('name', identity_fakes.project_name),
+            ('or_show', True),
+        ]
+        parsed_args = self.check_parser(self.cmd, arglist, verifylist)
+
+        # DisplayCommandBase.take_action() returns two tuples
+        columns, data = self.cmd.take_action(parsed_args)
+
+        # ProjectManager.create(name, description, enabled)
+        self.projects_mock.get.assert_called_with(identity_fakes.project_name)
+
+        # Set expected values
+        kwargs = {
+            'description': None,
+            'enabled': True,
+        }
+        self.projects_mock.create.assert_called_with(
+            identity_fakes.project_name,
+            **kwargs
+        )
+
+        collist = ('description', 'enabled', 'id', 'name')
+        self.assertEqual(collist, columns)
+        datalist = (
+            identity_fakes.project_description,
+            True,
+            identity_fakes.project_id,
+            identity_fakes.project_name,
+        )
+        self.assertEqual(datalist, data)
+
+    def test_project_create_or_show_not_exists(self):
+        arglist = [
+            '--or-show',
+            identity_fakes.project_name,
+        ]
+        verifylist = [
+            ('name', identity_fakes.project_name),
+            ('or_show', True),
+        ]
+        parsed_args = self.check_parser(self.cmd, arglist, verifylist)
+
+        # DisplayCommandBase.take_action() returns two tuples
+        columns, data = self.cmd.take_action(parsed_args)
+
+        # Set expected values
+        kwargs = {
+            'description': None,
+            'enabled': True,
+        }
+        self.projects_mock.create.assert_called_with(
+            identity_fakes.project_name,
+            **kwargs
+        )
+
+        collist = ('description', 'enabled', 'id', 'name')
+        self.assertEqual(collist, columns)
+        datalist = (
+            identity_fakes.project_description,
+            True,
+            identity_fakes.project_id,
+            identity_fakes.project_name,
+        )
+        self.assertEqual(datalist, data)
+
 
 class TestProjectDelete(TestProject):
 

openstackclient/tests/identity/v2_0/test_role.py

@@ -16,6 +16,8 @@
 import copy
 import mock
 
+from keystoneclient.openstack.common.apiclient import exceptions as ksc_exc
+
 from openstackclient.common import exceptions
 from openstackclient.identity.v2_0 import role
 from openstackclient.tests import fakes
@@ -142,6 +144,75 @@ class TestRoleCreate(TestRole):
         )
         self.assertEqual(data, datalist)
 
+    def test_role_create_or_show_exists(self):
+        def _raise_conflict(*args, **kwargs):
+            raise ksc_exc.Conflict(None)
+
+        # need to make this throw an exception...
+        self.roles_mock.create.side_effect = _raise_conflict
+
+        self.roles_mock.get.return_value = fakes.FakeResource(
+            None,
+            copy.deepcopy(identity_fakes.ROLE),
+            loaded=True,
+        )
+
+        arglist = [
+            '--or-show',
+            identity_fakes.role_name,
+        ]
+        verifylist = [
+            ('role_name', identity_fakes.role_name),
+            ('or_show', True),
+        ]
+        parsed_args = self.check_parser(self.cmd, arglist, verifylist)
+
+        # DisplayCommandBase.take_action() returns two tuples
+        columns, data = self.cmd.take_action(parsed_args)
+
+        # RoleManager.get(name, description, enabled)
+        self.roles_mock.get.assert_called_with(identity_fakes.role_name)
+
+        # RoleManager.create(name)
+        self.roles_mock.create.assert_called_with(
+            identity_fakes.role_name,
+        )
+
+        collist = ('id', 'name')
+        self.assertEqual(collist, columns)
+        datalist = (
+            identity_fakes.role_id,
+            identity_fakes.role_name,
+        )
+        self.assertEqual(datalist, data)
+
+    def test_role_create_or_show_not_exists(self):
+        arglist = [
+            '--or-show',
+            identity_fakes.role_name,
+        ]
+        verifylist = [
+            ('role_name', identity_fakes.role_name),
+            ('or_show', True),
+        ]
+        parsed_args = self.check_parser(self.cmd, arglist, verifylist)
+
+        # DisplayCommandBase.take_action() returns two tuples
+        columns, data = self.cmd.take_action(parsed_args)
+
+        # RoleManager.create(name)
+        self.roles_mock.create.assert_called_with(
+            identity_fakes.role_name,
+        )
+
+        collist = ('id', 'name')
+        self.assertEqual(collist, columns)
+        datalist = (
+            identity_fakes.role_id,
+            identity_fakes.role_name,
+        )
+        self.assertEqual(datalist, data)
+
 
 class TestRoleDelete(TestRole):