compute: Add 'server group create --rule' option

This closes the remaining gap with the 2.64 compute API microversion.

Change-Id: Ia42b23d813b7af6ddb1a41f4e9bdc8a6160b908c
Signed-off-by: Stephen Finucane <sfinucan@redhat.com>

Author: stephenfin

openstackclient/compute/v2/server_group.py

@@ -19,6 +19,7 @@
 
 from novaclient import api_versions
 from osc_lib.cli import format_columns
+from osc_lib.cli import parseractions
 from osc_lib.command import command
 from osc_lib import exceptions
 from osc_lib import utils
@@ -30,8 +31,9 @@
 
 
 _formatters = {
-    'policies': format_columns.ListColumn,
     'members': format_columns.ListColumn,
+    'policies': format_columns.ListColumn,
+    'rules': format_columns.DictColumn,
 }
 
 
@@ -68,7 +70,19 @@ def get_parser(self, prog_name):
                 "Add a policy to <name> "
                 "Specify --os-compute-api-version 2.15 or higher for the "
                 "'soft-affinity' or 'soft-anti-affinity' policy."
-            )
+            ),
+        )
+        parser.add_argument(
+            '--rule',
+            metavar='<key=value>',
+            action=parseractions.KeyValueAction,
+            default={},
+            dest='rules',
+            help=_(
+                "A rule for the policy. Currently, only the "
+                "'max_server_per_host' rule is supported for the "
+                "'anti-affinity' policy."
+            ),
         )
         return parser
 
@@ -84,12 +98,24 @@ def take_action(self, parsed_args):
                 )
                 raise exceptions.CommandError(msg % parsed_args.policy)
 
-        policy_arg = {'policies': [parsed_args.policy]}
-        if compute_client.api_version >= api_versions.APIVersion("2.64"):
-            policy_arg = {'policy': parsed_args.policy}
+        if parsed_args.rules:
+            if compute_client.api_version < api_versions.APIVersion('2.64'):
+                msg = _(
+                    '--os-compute-api-version 2.64 or greater is required to '
+                    'support the --rule option'
+                )
+                raise exceptions.CommandError(msg)
+
+        if compute_client.api_version < api_versions.APIVersion('2.64'):
+            kwargs = {'policies': [parsed_args.policy]}
+        else:
+            kwargs = {
+                'policy': parsed_args.policy,
+                'rules': parsed_args.rules or None,
+            }
 
         server_group = compute_client.server_groups.create(
-            name=parsed_args.name, **policy_arg)
+            name=parsed_args.name, **kwargs)
 
         info.update(server_group._info)
 
@@ -161,31 +187,33 @@ def take_action(self, parsed_args):
         if compute_client.api_version >= api_versions.APIVersion("2.64"):
             policy_key = 'Policy'
 
+        columns = (
+            'id',
+            'name',
+            policy_key.lower(),
+        )
+        column_headers = (
+            'ID',
+            'Name',
+            policy_key,
+        )
         if parsed_args.long:
-            column_headers = columns = (
-                'ID',
-                'Name',
-                policy_key,
+            columns += (
+                'members',
+                'project_id',
+                'user_id',
+            )
+            column_headers += (
                 'Members',
                 'Project Id',
                 'User Id',
             )
-        else:
-            column_headers = columns = (
-                'ID',
-                'Name',
-                policy_key,
-            )
 
         return (
             column_headers,
             (
                 utils.get_item_properties(
-                    s, columns,
-                    formatters={
-                        'Policies': format_columns.ListColumn,
-                        'Members': format_columns.ListColumn,
-                    }
+                    s, columns, formatters=_formatters,
                 ) for s in data
             ),
         )

openstackclient/tests/unit/compute/v2/test_server_group.py

@@ -152,28 +152,55 @@ def test_server_group_create_with_soft_policies_pre_v215(self):
             '--os-compute-api-version 2.15 or greater is required',
             str(ex))
 
-    def test_server_group_create_v264(self):
+    def test_server_group_create_with_rules(self):
         self.app.client_manager.compute.api_version = api_versions.APIVersion(
             '2.64')
 
         arglist = [
             '--policy', 'soft-anti-affinity',
+            '--rule', 'max_server_per_host=2',
             'affinity_group',
         ]
         verifylist = [
             ('policy', 'soft-anti-affinity'),
+            ('rules', {'max_server_per_host': '2'}),
             ('name', 'affinity_group'),
         ]
         parsed_args = self.check_parser(self.cmd, arglist, verifylist)
         columns, data = self.cmd.take_action(parsed_args)
         self.server_groups_mock.create.assert_called_once_with(
             name=parsed_args.name,
-            policy=parsed_args.policy,
+            policy=parsed_args.policy,  # should be 'policy', not 'policies'
+            rules=parsed_args.rules,
         )
 
         self.assertCountEqual(self.columns, columns)
         self.assertCountEqual(self.data, data)
 
+    def test_server_group_create_with_rules_pre_v264(self):
+        self.app.client_manager.compute.api_version = api_versions.APIVersion(
+            '2.63')
+
+        arglist = [
+            '--policy', 'soft-anti-affinity',
+            '--rule', 'max_server_per_host=2',
+            'affinity_group',
+        ]
+        verifylist = [
+            ('policy', 'soft-anti-affinity'),
+            ('rules', {'max_server_per_host': '2'}),
+            ('name', 'affinity_group'),
+        ]
+        parsed_args = self.check_parser(self.cmd, arglist, verifylist)
+
+        ex = self.assertRaises(
+            exceptions.CommandError,
+            self.cmd.take_action,
+            parsed_args)
+        self.assertIn(
+            '--os-compute-api-version 2.64 or greater is required',
+            str(ex))
+
 
 class TestServerGroupDelete(TestServerGroup):
 

releasenotes/notes/server-group-create_rule_option-9f84e52f35e7c3ba.yaml

@@ -0,0 +1,4 @@
+---
+features:
+  - |
+    Add support for ``--rule`` option for ``server group create``.