Adds CLI support for `glance md-object-property-show`

This patch adds a command "image metadef object property show" which
describe a specific metadata definitions property inside an object.

Change-Id: I738e2e3c27c9819290d5a2a8781878b81f03b5f9

doc/source/cli/command-objects/image-metadef.rst

@@ -37,6 +37,9 @@ Image v2
 .. autoprogram-cliff:: openstack.image.v2
    :command: image metadef object update
 
+.. autoprogram-cliff:: openstack.image.v2
+   :command: image metadef object property show
+
 .. autoprogram-cliff:: openstack.image.v2
    :command: image metadef property create
 

doc/source/cli/data/glance.csv

@@ -36,7 +36,7 @@ md-object-create,image metadef object create,Create a new metadata definitions o
 md-object-show,image metadef object show,Describe a specific metadata definitions object inside a namespace.
 md-object-list,image metadef object list,List metadata definitions objects inside a specific namespace.
 md-object-delete,image metadef object delete,Delete a specific metadata definitions object inside a namespace.
-md-object-property-show,,Describe a specific metadata definitions property inside an object.
+md-object-property-show,image metadef object property show,Describe a specific metadata definitions property inside an object.
 md-object-update,image metadef object update,Update metadata definitions object inside a namespace.
 md-property-create,image metadef property create,Create a new metadata definitions property inside a namespace.
 md-property-delete,image metadef property delete,Delete a specific metadata definitions property inside a namespace.

openstackclient/image/v2/metadef_objects.py

@@ -223,3 +223,47 @@ class SetMetadefObject(command.Command):
         image_client.update_metadef_object(
             object, parsed_args.namespace, **kwargs
         )
+
+
+class ShowMetadefObjectProperty(command.ShowOne):
+    _description = _(
+        "Describe a specific metadata definitions property inside an object."
+    )
+
+    def get_parser(self, prog_name):
+        parser = super().get_parser(prog_name)
+        parser.add_argument(
+            "namespace",
+            metavar="<namespace_name>",
+            help=_("Namespace (name) for the namespace"),
+        )
+        parser.add_argument(
+            "object",
+            metavar="<object_name>",
+            help=_("Name of an object."),
+        )
+        parser.add_argument(
+            "property",
+            help=_("Name of the property."),
+        )
+        return parser
+
+    def take_action(self, parsed_args):
+        image_client = self.app.client_manager.image
+
+        namespace_name = parsed_args.namespace
+        object_name = parsed_args.object
+
+        obj = image_client.get_metadef_object(object_name, namespace_name)
+        try:
+            prop = obj['properties'][parsed_args.property]
+            prop['name'] = parsed_args.property
+
+        except KeyError:
+            msg = _('Property %s not found in object %s.') % (
+                parsed_args.property,
+                parsed_args.object,
+            )
+            raise exceptions.CommandError(msg)
+
+        return zip(*sorted(prop.items()))

openstackclient/tests/unit/image/v2/test_metadef_objects.py

@@ -12,6 +12,8 @@
 #   License for the specific language governing permissions and limitations
 #   under the License.
 
+from osc_lib import exceptions
+
 from openstackclient.image.v2 import metadef_objects
 from openstackclient.tests.unit.image.v2 import fakes
 
@@ -198,3 +200,63 @@ class TestMetadefObjectSet(fakes.TestImagev2):
         result = self.cmd.take_action(parsed_args)
 
         self.assertIsNone(result)
+
+
+class TestMetadefObjectPropertyShow(fakes.TestImagev2):
+    _metadef_namespace = fakes.create_one_metadef_namespace()
+    _metadef_objects = fakes.create_one_metadef_object()
+    md_property = _metadef_objects['properties']['quota:cpu_quota']
+    md_property['name'] = 'quota:cpu_quota'
+
+    expected_columns = (
+        'description',
+        'name',
+        'title',
+        'type',
+    )
+    expected_data = (
+        md_property['description'],
+        md_property['name'],
+        md_property['title'],
+        md_property['type'],
+    )
+
+    def setUp(self):
+        super().setUp()
+
+        self.image_client.get_metadef_object.return_value = (
+            self._metadef_objects
+        )
+        self.cmd = metadef_objects.ShowMetadefObjectProperty(self.app, None)
+
+    def test_object_property_show(self):
+        arglist = [
+            self._metadef_namespace.namespace,
+            self._metadef_objects.name,
+            'quota:cpu_quota',
+        ]
+        verifylist = []
+        parsed_args = self.check_parser(self.cmd, arglist, verifylist)
+        columns, data = self.cmd.take_action(parsed_args)
+
+        self.assertEqual(self.expected_columns, columns)
+        self.assertEqual(self.expected_data, data)
+
+    def test_neg_object_property_show(self):
+        arglist = [
+            self._metadef_namespace.namespace,
+            self._metadef_objects.name,
+            'prop1',
+        ]
+        verifylist = []
+        parsed_args = self.check_parser(self.cmd, arglist, verifylist)
+        exc = self.assertRaises(
+            exceptions.CommandError,
+            self.cmd.take_action,
+            parsed_args,
+        )
+        self.assertIn(
+            'Property %s not found in object %s.'
+            % (parsed_args.property, parsed_args.object),
+            str(exc),
+        )

releasenotes/notes/add-image-metadef-object-property-show-4ab2c957451ea230.yaml

@@ -0,0 +1,5 @@
+---
+features:
+  - |
+    Add ``image metadef object property show`` command which
+    shows a particular property inside metadef object.

setup.cfg

@@ -404,7 +404,7 @@ openstack.image.v2 =
     image_metadef_object_list = openstackclient.image.v2.metadef_objects:ListMetadefObjects
     image_metadef_object_delete = openstackclient.image.v2.metadef_objects:DeleteMetadefObject
     image_metadef_object_update = openstackclient.image.v2.metadef_objects:SetMetadefObject
-
+    image_metadef_object_property_show = openstackclient.image.v2.metadef_objects:ShowMetadefObjectProperty
 
     image_metadef_property_create = openstackclient.image.v2.metadef_properties:CreateMetadefProperty
     image_metadef_property_delete = openstackclient.image.v2.metadef_properties:DeleteMetadefProperty