Add resize-instance to OSC

This change adds database support to the python-openstackclient
project for the resize-instance command

The trove command resize-instance is now:
    openstack database instance resize flavor

Change-Id: I58f8a6ebf8f715c5cc67ce67a36f87d720056ffe
Partially-Implements: blueprint trove-support-in-python-openstackclient

releasenotes/notes/add-resize-flavor-to-osc-ba0e7c038df8ecfe.yaml

@@ -0,0 +1,5 @@
+---
+features:
+  - |
+    The command ``trove resize-instance`` is now available to use in
+    the python-openstackclient CLI as ``openstack database instance resize flavor``

setup.cfg

@@ -57,6 +57,7 @@ openstack.database.v1 =
     database_instance_delete = troveclient.osc.v1.database_instances:DeleteDatabaseInstance
     database_instance_list = troveclient.osc.v1.database_instances:ListDatabaseInstances
     database_instance_reset_status = troveclient.osc.v1.database_instances:ResetDatabaseInstanceStatus
+    database_instance_resize_flavor = troveclient.osc.v1.database_instances:ResizeDatabaseInstanceFlavor
     database_instance_show = troveclient.osc.v1.database_instances:ShowDatabaseInstance
     database_limit_list = troveclient.osc.v1.database_limits:ListDatabaseLimits
     database_root_disable = troveclient.osc.v1.database_root:DisableDatabaseRoot

troveclient/osc/v1/database_instances.py

@@ -387,3 +387,35 @@ class ResetDatabaseInstanceStatus(command.Command):
         instance = osc_utils.find_resource(db_instances,
                                            parsed_args.instance)
         db_instances.reset_status(instance)
+
+
+class ResizeDatabaseInstanceFlavor(command.Command):
+
+    _description = _("Resize an instance with a new flavor")
+
+    def get_parser(self, prog_name):
+        parser = super(ResizeDatabaseInstanceFlavor, self).get_parser(
+            prog_name
+        )
+        parser.add_argument(
+            'instance',
+            metavar='<instance>',
+            type=str,
+            help=_('ID or name of the instance')
+        )
+        parser.add_argument(
+            'flavor_id',
+            metavar='<flavor_id>',
+            type=str,
+            help=_('New flavor of the instance')
+        )
+        return parser
+
+    def take_action(self, parsed_args):
+        db_instances = self.app.client_manager.database.instances
+        db_flavor = self.app.client_manager.database.flavors
+        instance = osc_utils.find_resource(db_instances,
+                                           parsed_args.instance)
+        flavor = osc_utils.find_resource(db_flavor,
+                                         parsed_args.flavor_id)
+        db_instances.resize_instance(instance, flavor)

troveclient/tests/osc/v1/test_database_instances.py

@@ -183,3 +183,21 @@ class TestDatabaseInstanceResetStatus(TestInstances):
         result = self.cmd.take_action(parsed_args)
         self.instance_client.reset_status.assert_called_with('instance1')
         self.assertIsNone(result)
+
+
+class TestDatabaseInstanceResizeFlavor(TestInstances):
+
+    def setUp(self):
+        super(TestDatabaseInstanceResizeFlavor, self).setUp()
+        self.cmd = database_instances.ResizeDatabaseInstanceFlavor(self.app,
+                                                                   None)
+
+    @mock.patch.object(utils, 'find_resource')
+    def test_instance_resize_flavor(self, mock_find):
+        args = ['instance1', 'flavor_id']
+        mock_find.side_effect = ['instance1', 'flavor_id']
+        parsed_args = self.check_parser(self.cmd, args, [])
+        result = self.cmd.take_action(parsed_args)
+        self.instance_client.resize_instance.assert_called_with('instance1',
+                                                                'flavor_id')
+        self.assertIsNone(result)