Add "consistency group show" command

Add "consistency group show" command in volume v2 (v2 only).

Change-Id: If496eba2955c0aacd52600bb6fba39690ddd90cb
Implements: bp cinder-command-support
Partial-Bug: #1613964

Author: daizhiyong

doc/source/command-objects/consistency-group.rst

@@ -81,3 +81,20 @@ List consistency groups.
 .. option:: --long
 
     List additional fields in output
+
+consistency group show
+----------------------
+
+Display consistency group details.
+
+.. program:: consistency group show
+.. code:: bash
+
+    os consistency group show
+        <consistency-group>
+
+.. _consistency_group_show-consistency-group:
+.. describe:: <consistency-group>
+
+    Consistency group to display (name or ID)
+

openstackclient/tests/unit/volume/v2/test_consistency_group.py

@@ -353,3 +353,46 @@ def test_consistency_group_list_with_long(self):
             detailed=True, search_opts={'all_tenants': False})
         self.assertEqual(self.columns_long, columns)
         self.assertEqual(self.data_long, list(data))
+
+
+class TestConsistencyGroupShow(TestConsistencyGroup):
+    columns = (
+        'availability_zone',
+        'created_at',
+        'description',
+        'id',
+        'name',
+        'status',
+        'volume_types',
+    )
+
+    def setUp(self):
+        super(TestConsistencyGroupShow, self).setUp()
+
+        self.consistency_group = (
+            volume_fakes.FakeConsistencyGroup.create_one_consistency_group())
+        self.data = (
+            self.consistency_group.availability_zone,
+            self.consistency_group.created_at,
+            self.consistency_group.description,
+            self.consistency_group.id,
+            self.consistency_group.name,
+            self.consistency_group.status,
+            self.consistency_group.volume_types,
+        )
+        self.consistencygroups_mock.get.return_value = self.consistency_group
+        self.cmd = consistency_group.ShowConsistencyGroup(self.app, None)
+
+    def test_consistency_group_show(self):
+        arglist = [
+            self.consistency_group.id
+        ]
+        verifylist = [
+            ("consistency_group", self.consistency_group.id)
+        ]
+        parsed_args = self.check_parser(self.cmd, arglist, verifylist)
+        columns, data = self.cmd.take_action(parsed_args)
+        self.consistencygroups_mock.get.assert_called_once_with(
+            self.consistency_group.id)
+        self.assertEqual(self.columns, columns)
+        self.assertEqual(self.data, data)

openstackclient/volume/v2/consistency_group.py

@@ -23,6 +23,7 @@
 
 from openstackclient.i18n import _
 
+
 LOG = logging.getLogger(__name__)
 
 
@@ -177,3 +178,23 @@ def take_action(self, parsed_args):
                 s, columns,
                 formatters={'Volume Types': utils.format_list})
             for s in consistency_groups))
+
+
+class ShowConsistencyGroup(command.ShowOne):
+    _description = _("Display consistency group details.")
+
+    def get_parser(self, prog_name):
+        parser = super(ShowConsistencyGroup, self).get_parser(prog_name)
+        parser.add_argument(
+            "consistency_group",
+            metavar="<consistency-group>",
+            help=_("Consistency group to display (name or ID)")
+        )
+        return parser
+
+    def take_action(self, parsed_args):
+        volume_client = self.app.client_manager.volume
+        consistency_group = utils.find_resource(
+            volume_client.consistencygroups,
+            parsed_args.consistency_group)
+        return zip(*sorted(six.iteritems(consistency_group._info)))

releasenotes/notes/bug-1613964-837196399be16b3d.yaml

@@ -4,3 +4,5 @@ features:
     [Bug `1613964 <https://bugs.launchpad.net/python-openstackclient/+bug/1613964>`_]
   - Add ``consistency group delete`` command in volume v2.
     [Bug `1613964 <https://bugs.launchpad.net/python-openstackclient/+bug/1613964>`_]
+  - Add ``consistency group show`` command in volume v2.
+    [Bug `1613964 <https://bugs.launchpad.net/python-openstackclient/+bug/1613964>`_]

setup.cfg

@@ -511,6 +511,7 @@ openstack.volume.v2 =
     consistency_group_create = openstackclient.volume.v2.consistency_group:CreateConsistencyGroup
     consistency_group_delete = openstackclient.volume.v2.consistency_group:DeleteConsistencyGroup
     consistency_group_list = openstackclient.volume.v2.consistency_group:ListConsistencyGroup
+    consistency_group_show = openstackclient.volume.v2.consistency_group:ShowConsistencyGroup
 
     consistency_group_snapshot_create = openstackclient.volume.v2.consistency_group_snapshot:CreateConsistencyGroupSnapshot
     consistency_group_snapshot_delete = openstackclient.volume.v2.consistency_group_snapshot:DeleteConsistencyGroupSnapshot