take_action() method from command.Command shouldn't return

command.Command and command.Showone are base classes implemented
in cliff framework. Showone extends Command to allow take_action()
to return data to be formatted using a user-selectable formatter.
Most of the classes which are extended from Command in
openstackclient/identity/v3/ in some cases return data or return
nothing where it is not necessary, this commit fixes most of them.

Change-Id: I84c72ea4d6680f8bdbef5449316dd9a8af8c8286
Closes-Bug: 1550892

openstackclient/identity/v3/consumer.py

@@ -60,7 +60,6 @@ class DeleteConsumer(command.Command):
         consumer = utils.find_resource(
             identity_client.oauth1.consumers, parsed_args.consumer)
         identity_client.oauth1.consumers.delete(consumer.id)
-        return
 
 
 class ListConsumer(command.Lister):
@@ -107,7 +106,6 @@ class SetConsumer(command.Command):
 
         consumer = identity_client.oauth1.consumers.update(
             consumer.id, **kwargs)
-        return
 
 
 class ShowConsumer(command.ShowOne):

openstackclient/identity/v3/credential.py

@@ -84,7 +84,6 @@ class DeleteCredential(command.Command):
     def take_action(self, parsed_args):
         identity_client = self.app.client_manager.identity
         identity_client.credentials.delete(parsed_args.credential)
-        return
 
 
 class ListCredential(command.Lister):
@@ -155,8 +154,6 @@ class SetCredential(command.Command):
                                            blob=parsed_args.data,
                                            project=project)
 
-        return
-
 
 class ShowCredential(command.ShowOne):
     """Show credential command"""

openstackclient/identity/v3/domain.py

@@ -100,7 +100,6 @@ class DeleteDomain(command.Command):
         domain = utils.find_resource(identity_client.domains,
                                      parsed_args.domain)
         identity_client.domains.delete(domain.id)
-        return
 
 
 class ListDomain(command.Lister):
@@ -168,7 +167,6 @@ class SetDomain(command.Command):
             sys.stdout.write("Domain not updated, no arguments present")
             return
         identity_client.domains.update(domain.id, **kwargs)
-        return
 
 
 class ShowDomain(command.ShowOne):

openstackclient/identity/v3/endpoint.py

@@ -109,7 +109,6 @@ class DeleteEndpoint(command.Command):
         endpoint_id = utils.find_resource(identity_client.endpoints,
                                           parsed_args.endpoint).id
         identity_client.endpoints.delete(endpoint_id)
-        return
 
 
 class ListEndpoint(command.Lister):
@@ -221,7 +220,6 @@ class SetEndpoint(command.Command):
         if parsed_args.service:
             service = common.find_service(identity_client, parsed_args.service)
             service_id = service.id
-
         enabled = None
         if parsed_args.enabled:
             enabled = True
@@ -237,8 +235,6 @@ class SetEndpoint(command.Command):
             enabled=enabled
         )
 
-        return
-
 
 class ShowEndpoint(command.ShowOne):
     """Display endpoint details"""

openstackclient/identity/v3/federation_protocol.py

@@ -83,7 +83,6 @@ class DeleteProtocol(command.Command):
         identity_client = self.app.client_manager.identity
         identity_client.federation.protocols.delete(
             parsed_args.identity_provider, parsed_args.federation_protocol)
-        return
 
 
 class ListProtocols(command.Lister):

openstackclient/identity/v3/group.py

@@ -182,7 +182,6 @@ class DeleteGroup(command.Command):
                                           group,
                                           parsed_args.domain)
             identity_client.groups.delete(group_obj.id)
-        return
 
 
 class ListGroup(command.Lister):
@@ -322,7 +321,6 @@ class SetGroup(command.Command):
             sys.stderr.write("Group not updated, no arguments present")
             return
         identity_client.groups.update(group.id, **kwargs)
-        return
 
 
 class ShowGroup(command.ShowOne):

openstackclient/identity/v3/identity_provider.py

@@ -102,7 +102,6 @@ class DeleteIdentityProvider(command.Command):
         identity_client = self.app.client_manager.identity
         identity_client.federation.identity_providers.delete(
             parsed_args.identity_provider)
-        return
 
 
 class ListIdentityProvider(command.Lister):

openstackclient/identity/v3/mapping.py

@@ -121,7 +121,6 @@ class DeleteMapping(command.Command):
         identity_client = self.app.client_manager.identity
 
         identity_client.federation.mappings.delete(parsed_args.mapping)
-        return
 
 
 class ListMapping(command.Lister):

openstackclient/identity/v3/policy.py

@@ -69,7 +69,6 @@ class DeletePolicy(command.Command):
     def take_action(self, parsed_args):
         identity_client = self.app.client_manager.identity
         identity_client.policies.delete(parsed_args.policy)
-        return
 
 
 class ListPolicy(command.Lister):
@@ -139,7 +138,6 @@ class SetPolicy(command.Command):
             sys.stdout.write('Policy not updated, no arguments present \n')
             return
         identity_client.policies.update(parsed_args.policy, **kwargs)
-        return
 
 
 class ShowPolicy(command.ShowOne):

openstackclient/identity/v3/project.py

@@ -153,7 +153,6 @@ class DeleteProject(command.Command):
                 project_obj = utils.find_resource(identity_client.projects,
                                                   project)
             identity_client.projects.delete(project_obj.id)
-        return
 
 
 class ListProject(command.Lister):
@@ -267,8 +266,8 @@ class SetProject(command.Command):
                 and not parsed_args.property
                 and not parsed_args.disable):
             return
-
+        project = common.find_project(identity_client,
-        project = common.find_project(identity_client, parsed_args.project,
+                                      parsed_args.project,
                                       parsed_args.domain)
 
         kwargs = {}
@@ -284,7 +283,6 @@ class SetProject(command.Command):
             kwargs.update(parsed_args.property)
 
         identity_client.projects.update(project.id, **kwargs)
-        return
 
 
 class ShowProject(command.ShowOne):

openstackclient/identity/v3/region.py

@@ -75,7 +75,6 @@ class DeleteRegion(command.Command):
         identity_client = self.app.client_manager.identity
 
         identity_client.regions.delete(parsed_args.region)
-        return
 
 
 class ListRegion(command.Lister):
@@ -135,7 +134,6 @@ class SetRegion(command.Command):
 
         if not parsed_args.parent_region and not parsed_args.description:
             return
-
         kwargs = {}
         if parsed_args.description:
             kwargs['description'] = parsed_args.description
@@ -143,7 +141,6 @@ class SetRegion(command.Command):
             kwargs['parent_region'] = parsed_args.parent_region
 
         identity_client.regions.update(parsed_args.region, **kwargs)
-        return
 
 
 class ShowRegion(command.ShowOne):

openstackclient/identity/v3/role.py

@@ -123,7 +123,6 @@ class AddRole(command.Command):
         if (not parsed_args.user and not parsed_args.domain
                 and not parsed_args.group and not parsed_args.project):
             return
-
         role = utils.find_resource(
             identity_client.roles,
             parsed_args.role,
@@ -138,7 +137,6 @@ class AddRole(command.Command):
             return
 
         identity_client.roles.grant(role.id, **kwargs)
-        return
 
 
 class CreateRole(command.ShowOne):
@@ -197,7 +195,6 @@ class DeleteRole(command.Command):
                 role,
             )
             identity_client.roles.delete(role_obj.id)
-        return
 
 
 class ListRole(command.Lister):
@@ -318,8 +315,10 @@ class RemoveRole(command.Command):
 
         if (not parsed_args.user and not parsed_args.domain
                 and not parsed_args.group and not parsed_args.project):
+            sys.stderr.write("Incorrect set of arguments "
+                             "provided. See openstack --help for more "
+                             "details\n")
             return
-
         role = utils.find_resource(
             identity_client.roles,
             parsed_args.role,
@@ -331,9 +330,7 @@ class RemoveRole(command.Command):
             sys.stderr.write("Role not removed, incorrect set of arguments \
             provided. See openstack --help for more details\n")
             return
-
         identity_client.roles.revoke(role.id, **kwargs)
-        return
 
 
 class SetRole(command.Command):
@@ -357,15 +354,16 @@ class SetRole(command.Command):
         identity_client = self.app.client_manager.identity
 
         if not parsed_args.name:
+            sys.stderr.write("Incorrect set of arguments "
+                             "provided. See openstack --help for more "
+                             "details\n")
             return
-
         role = utils.find_resource(
             identity_client.roles,
             parsed_args.role,
         )
 
         identity_client.roles.update(role.id, name=parsed_args.name)
-        return
 
 
 class ShowRole(command.ShowOne):

openstackclient/identity/v3/service.py

@@ -16,6 +16,7 @@
 """Identity v3 Service action implementations"""
 
 import six
+import sys
 
 from openstackclient.common import command
 from openstackclient.common import utils
@@ -91,7 +92,6 @@ class DeleteService(command.Command):
         service = common.find_service(identity_client, parsed_args.service)
 
         identity_client.services.delete(service.id)
-        return
 
 
 class ListService(command.Lister):
@@ -166,10 +166,12 @@ class SetService(command.Command):
                 and not parsed_args.description
                 and not parsed_args.enable
                 and not parsed_args.disable):
+            sys.stderr.write("Incorrect set of arguments "
+                             "provided. See openstack --help for more "
+                             "details\n")
             return
-
+        service = common.find_service(identity_client,
-        service = common.find_service(identity_client, parsed_args.service)
+                                      parsed_args.service)
-
         kwargs = {}
         if parsed_args.type:
             kwargs['type'] = parsed_args.type
@@ -186,7 +188,6 @@ class SetService(command.Command):
             service.id,
             **kwargs
         )
-        return
 
 
 class ShowService(command.ShowOne):

openstackclient/identity/v3/service_provider.py

@@ -96,7 +96,6 @@ class DeleteServiceProvider(command.Command):
         service_client = self.app.client_manager.identity
         service_client.federation.service_providers.delete(
             parsed_args.service_provider)
-        return
 
 
 class ListServiceProvider(command.Lister):

openstackclient/identity/v3/token.py

@@ -194,4 +194,3 @@ class RevokeToken(command.Command):
         identity_client = self.app.client_manager.identity
 
         identity_client.tokens.revoke_token(parsed_args.token)
-        return

openstackclient/identity/v3/user.py

@@ -17,6 +17,7 @@
 
 import copy
 import six
+import sys
 
 from keystoneauth1 import exceptions as ks_exc
 
@@ -162,7 +163,6 @@ class DeleteUser(command.Command):
                 user_obj = utils.find_resource(identity_client.users,
                                                user)
             identity_client.users.delete(user_obj.id)
-        return
 
 
 class ListUser(command.Lister):
@@ -334,13 +334,15 @@ class SetUser(command.Command):
                 and not parsed_args.description
                 and not parsed_args.enable
                 and not parsed_args.disable):
+            sys.stderr.write("Incorrect set of arguments "
+                             "provided. See openstack --help for more "
+                             "details\n")
             return
 
         user = utils.find_resource(
             identity_client.users,
             parsed_args.user,
         )
-
         kwargs = {}
         if parsed_args.name:
             kwargs['name'] = parsed_args.name
@@ -362,7 +364,6 @@ class SetUser(command.Command):
             kwargs['enabled'] = False
 
         identity_client.users.update(user.id, **kwargs)
-        return
 
 
 class SetPasswordUser(command.Command):