Add resize-volume to OSC

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

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

Change-Id: If2413a605d294db0b0ee9c7aa49fbb1c929ebcd0
Partially-Implements: blueprint trove-support-in-python-openstackclient

releasenotes/notes/add-resize-volume-to-osc-aa5eaabb8f25edec.yaml

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

setup.cfg

@@ -60,6 +60,7 @@ openstack.database.v1 =
     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_resize_volume = troveclient.osc.v1.database_instances:ResizeDatabaseInstanceVolume
     database_instance_show = troveclient.osc.v1.database_instances:ShowDatabaseInstance
     database_instance_upgrade = troveclient.osc.v1.database_instances:UpgradeDatabaseInstance
     database_limit_list = troveclient.osc.v1.database_limits:ListDatabaseLimits

troveclient/osc/v1/database_instances.py

@@ -445,3 +445,33 @@ class UpgradeDatabaseInstance(command.Command):
         instance = osc_utils.find_resource(db_instances,
                                            parsed_args.instance)
         db_instances.upgrade(instance, parsed_args.datastore_version)
+
+
+class ResizeDatabaseInstanceVolume(command.Command):
+
+    _description = _("Resizes the volume size of an instance.")
+
+    def get_parser(self, prog_name):
+        parser = super(ResizeDatabaseInstanceVolume, self).get_parser(
+            prog_name
+        )
+        parser.add_argument(
+            'instance',
+            metavar='<instance>',
+            type=str,
+            help=_('ID or name of the instance.')
+        )
+        parser.add_argument(
+            'size',
+            metavar='<size>',
+            type=int,
+            default=None,
+            help=_('New size of the instance disk volume in GB.')
+        )
+        return parser
+
+    def take_action(self, parsed_args):
+        db_instances = self.app.client_manager.database.instances
+        instance = osc_utils.find_resource(db_instances,
+                                           parsed_args.instance)
+        db_instances.resize_volume(instance, parsed_args.size)

troveclient/tests/osc/v1/test_database_instances.py

@@ -218,3 +218,21 @@ class TestDatabaseInstanceUpgrade(TestInstances):
         self.instance_client.upgrade.assert_called_with('instance1',
                                                         'datastore_version1')
         self.assertIsNone(result)
+
+
+class TestDatabaseInstanceResizeVolume(TestInstances):
+
+    def setUp(self):
+        super(TestDatabaseInstanceResizeVolume, self).setUp()
+        self.cmd = database_instances.ResizeDatabaseInstanceVolume(self.app,
+                                                                   None)
+
+    @mock.patch.object(utils, 'find_resource')
+    def test_instance_resize_volume(self, mock_find):
+        args = ['instance1', '5']
+        mock_find.side_effect = ['instance1']
+        parsed_args = self.check_parser(self.cmd, args, [])
+        result = self.cmd.take_action(parsed_args)
+        self.instance_client.resize_volume.assert_called_with('instance1',
+                                                              5)
+        self.assertIsNone(result)