Add support for deleting Image-property

OSC does not support to delete volume's image property.
This patch will provide support for deleting image property
to existing volume.

Closes-Bug:#1554879
Change-Id: I9256913948fae9e9a03fed173b826dfa918f78e9
Implements: bp cinder-command-support

Author: ranasheel2000

doc/source/command-objects/volume.rst

@@ -219,12 +219,18 @@ Unset volume properties
 
     os volume unset
         [--property <key>]
+        [--image-property <key>]
         <volume>
 
 .. option:: --property <key>
 
     Property to remove from volume (repeat option to remove multiple properties)
 
+.. option:: --image-property <key>
+
+    To remove image properties from volume
+    (repeat option to remove multiple image properties)
+
 .. describe:: <volume>
 
     Volume to modify (name or ID)

openstackclient/tests/volume/v2/test_volume.py

@@ -783,3 +783,56 @@ def test_volume_set_image_property(self):
         self.cmd.take_action(parsed_args)
         self.volumes_mock.set_image_metadata.assert_called_with(
             self.volumes_mock.get().id, parsed_args.image_property)
+
+
+class TestVolumeUnset(TestVolume):
+
+    def setUp(self):
+        super(TestVolumeUnset, self).setUp()
+
+        self.new_volume = volume_fakes.FakeVolume.create_one_volume()
+        self.volumes_mock.create.return_value = self.new_volume
+
+        # Get the command object to set property
+        self.cmd_set = volume.SetVolume(self.app, None)
+
+        # Get the command object to unset property
+        self.cmd_unset = volume.UnsetVolume(self.app, None)
+
+    def test_volume_unset_image_property(self):
+
+        # Arguments for setting image properties
+        arglist = [
+            '--image-property', 'Alpha=a',
+            '--image-property', 'Beta=b',
+            self.new_volume.id,
+        ]
+        verifylist = [
+            ('image_property', {'Alpha': 'a', 'Beta': 'b'}),
+            ('volume', self.new_volume.id),
+        ]
+        parsed_args = self.check_parser(self.cmd_set, arglist, verifylist)
+
+        # In base command class ShowOne in cliff, abstract method take_action()
+        # returns nothing
+        self.cmd_set.take_action(parsed_args)
+
+        # Arguments for unsetting image properties
+        arglist_unset = [
+            '--image-property', 'Alpha',
+            self.new_volume.id,
+        ]
+        verifylist_unset = [
+            ('image_property', ['Alpha']),
+            ('volume', self.new_volume.id),
+        ]
+        parsed_args_unset = self.check_parser(self.cmd_unset,
+                                              arglist_unset,
+                                              verifylist_unset)
+
+        # In base command class ShowOne in cliff, abstract method take_action()
+        # returns nothing
+        self.cmd_unset.take_action(parsed_args_unset)
+
+        self.volumes_mock.delete_image_metadata.assert_called_with(
+            self.volumes_mock.get().id, parsed_args_unset.image_property)

openstackclient/volume/v2/volume.py

@@ -433,18 +433,30 @@ def get_parser(self, prog_name):
         parser.add_argument(
             '--property',
             metavar='<key>',
-            required=True,
             action='append',
-            default=[],
             help='Property to remove from volume '
                  '(repeat option to remove multiple properties)',
         )
+        parser.add_argument(
+            '--image-property',
+            metavar='<key>',
+            action='append',
+            help='To remove image properties from volume '
+                 '(repeat option to remove multiple image properties)',
+        )
         return parser
 
     def take_action(self, parsed_args):
         volume_client = self.app.client_manager.volume
         volume = utils.find_resource(
             volume_client.volumes, parsed_args.volume)
 
-        volume_client.volumes.delete_metadata(
-            volume.id, parsed_args.property)
+        if parsed_args.property:
+            volume_client.volumes.delete_metadata(
+                volume.id, parsed_args.property)
+        if parsed_args.image_property:
+            volume_client.volumes.delete_image_metadata(
+                volume.id, parsed_args.image_property)
+
+        if (not parsed_args.image_property and not parsed_args.property):
+            self.app.log.error("No changes requested\n")

releasenotes/notes/image-property-delete-118c6007eba8357a.yaml

@@ -0,0 +1,14 @@
+---
+fixes:
+  - |
+    Added support for deleting volume image property.
+
+    Image properties are copied from image when volume is created.
+    But since a volume is mutable, user sometime wants to delete
+    image properties for volume.
+
+    So, this fix enables user to delete image properties of volume
+    using below command:
+    ``volume unset  [--image-property <key>] <volume>``.
+
+    [Bug 'https://bugs.launchpad.net/python-openstackclient/+bug/1554879'_]