Adds command image metadef object list

Depends-on: https://review.opendev.org/c/openstack/openstacksdk/+/858350
Change-Id: I0691f7519e8fb9f01836e6232e0bcebd2c428ac3

Author: Mridula Joshi

doc/source/cli/data/glance.csv

@@ -34,7 +34,7 @@ md-namespace-tags-delete,,Delete all metadata definitions tags inside a specific
 md-namespace-update,,Update an existing metadata definitions namespace.
 md-object-create,image metadef object create,Create a new metadata definitions object inside a namespace.
 md-object-delete,,Delete a specific metadata definitions object inside a namespace.
-md-object-list,,List metadata definitions objects inside a specific namespace.
+md-object-list,image metadef object list,List metadata definitions objects inside a specific namespace.
 md-object-property-show,,Describe a specific metadata definitions property inside an object.
 md-object-show,image metadef object show,Describe a specific metadata definitions object inside a namespace.
 md-object-update,,Update metadata definitions object inside a namespace.

openstackclient/image/v2/metadef_objects.py

@@ -105,3 +105,35 @@ def take_action(self, parsed_args):
         fields, value = _format_object(data)
 
         return fields, value
+
+
+class ListMetadefObjects(command.Lister):
+    _description = _("List metadef objects inside a specific namespace.")
+
+    def get_parser(self, prog_name):
+        parser = super().get_parser(prog_name)
+        parser.add_argument(
+            "namespace",
+            metavar="<namespace>",
+            help=_("Namespace (name) for the namespace"),
+        )
+        return parser
+
+    def take_action(self, parsed_args):
+        image_client = self.app.client_manager.image
+
+        namespace_name = parsed_args.namespace
+        columns = ['name', 'description']
+
+        md_objects = list(image_client.metadef_objects(namespace_name))
+        column_headers = columns
+        return (
+            column_headers,
+            (
+                utils.get_item_properties(
+                    md_object,
+                    columns,
+                )
+                for md_object in md_objects
+            ),
+        )

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

@@ -102,3 +102,38 @@ def test_object_show(self):
 
         self.assertEqual(self.expected_columns, columns)
         self.assertEqual(self.expected_data, data)
+
+
+class TestMetadefObjectList(fakes.TestImagev2):
+    _metadef_namespace = fakes.create_one_metadef_namespace()
+    _metadef_objects = [fakes.create_one_metadef_object()]
+    columns = ['name', 'description']
+
+    datalist = []
+
+    def setUp(self):
+        super().setUp()
+
+        self.image_client.metadef_objects.side_effect = [
+            self._metadef_objects,
+            [],
+        ]
+
+        # Get the command object to test
+        self.image_client.metadef_objects.return_value = iter(
+            self._metadef_objects
+        )
+        self.cmd = metadef_objects.ListMetadefObjects(self.app, None)
+        self.datalist = self._metadef_objects
+
+    def test_metadef_objects_list(self):
+        arglist = [self._metadef_namespace.namespace]
+        parsed_args = self.check_parser(self.cmd, arglist, [])
+
+        # In base command class Lister in cliff, abstract method take_action()
+        # returns a tuple containing the column names and an iterable
+        # containing the data to be listed.
+        columns, data = self.cmd.take_action(parsed_args)
+
+        self.assertEqual(self.columns, columns)
+        self.assertEqual(getattr(self.datalist[0], 'name'), next(data)[0])

releasenotes/notes/add-metadef-object-list-c8831e73c696b9d9.yaml

@@ -0,0 +1,5 @@
+---
+features:
+  - |
+    Add ``image metadef object list`` command to list the
+    metadata definitions objects inside a specific namespace

setup.cfg

@@ -397,8 +397,11 @@ openstack.image.v2 =
     image_metadef_namespace_set = openstackclient.image.v2.metadef_namespaces:SetMetadefNameSpace
     image_metadef_namespace_show = openstackclient.image.v2.metadef_namespaces:ShowMetadefNameSpace
 
+
     image_metadef_object_create = openstackclient.image.v2.metadef_objects:CreateMetadefObjects
     image_metadef_object_show = openstackclient.image.v2.metadef_objects:ShowMetadefObjects
+    image_metadef_object_list = openstackclient.image.v2.metadef_objects:ListMetadefObjects
+
 
     image_metadef_property_create = openstackclient.image.v2.metadef_properties:CreateMetadefProperty
     image_metadef_property_list = openstackclient.image.v2.metadef_properties:ListMetadefProperties