compute: Add support for 'server boot --nic ...,tag=<tag>'

This has been around for a long time but was not exposed via OSC. Close
this gap.

Change-Id: I71aabf10f791f68ee7405ffb5e8317cc96cb3b38
Signed-off-by: Stephen Finucane <sfinucan@redhat.com>

openstackclient/compute/v2/server.py

@@ -646,6 +646,8 @@ class NICAction(argparse.Action):
 
             values = '='.join([self.key, values])
 
+        # We don't include 'tag' here by default since that requires a
+        # particular microversion
         info = {
             'net-id': '',
             'port-id': '',
@@ -656,11 +658,11 @@ class NICAction(argparse.Action):
         for kv_str in values.split(','):
             k, sep, v = kv_str.partition("=")
 
-            if k not in info or not v:
+            if k not in list(info) + ['tag'] or not v:
                 msg = _(
                     "Invalid argument %s; argument must be of form "
-                    "'net-id=net-uuid,v4-fixed-ip=ip-addr,v6-fixed-ip=ip-addr,"
+                    "'net-id=net-uuid,port-id=port-uuid,v4-fixed-ip=ip-addr,"
-                    "port-id=port-uuid'"
+                    "v6-fixed-ip=ip-addr,tag=tag'"
                 )
                 raise argparse.ArgumentTypeError(msg % values)
 
@@ -801,7 +803,7 @@ class CreateServer(command.ShowOne):
         parser.add_argument(
             '--nic',
             metavar="<net-id=net-uuid,port-id=port-uuid,v4-fixed-ip=ip-addr,"
-                    "v6-fixed-ip=ip-addr,auto,none>",
+                    "v6-fixed-ip=ip-addr,tag=tag,auto,none>",
             action=NICAction,
             dest='nics',
             default=[],
@@ -814,6 +816,8 @@ class CreateServer(command.ShowOne):
                 "\n"
                 "v6-fixed-ip=<ip-addr>: IPv6 fixed address for NIC (optional),"
                 "\n"
+                "tag: interface metadata tag (optional) "
+                "(supported by --os-compute-api-version 2.43 or above),\n"
                 "none: (v2.37+) no network is attached,\n"
                 "auto: (v2.37+) the compute service will automatically "
                 "allocate a network.\n"
@@ -1191,6 +1195,17 @@ class CreateServer(command.ShowOne):
             nics = nics[0]
         else:
             for nic in nics:
+                if 'tag' in nic:
+                    if (
+                        compute_client.api_version <
+                        api_versions.APIVersion('2.43')
+                    ):
+                        msg = _(
+                            '--os-compute-api-version 2.43 or greater is '
+                            'required to support the --nic tag field'
+                        )
+                        raise exceptions.CommandError(msg)
+
                 if self.app.client_manager.is_network_endpoint_enabled():
                     network_client = self.app.client_manager.network
 

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

@@ -1423,6 +1423,113 @@ class TestServerCreate(TestServer):
         self.assertEqual(self.columns, columns)
         self.assertEqual(self.datalist(), data)
 
+    def test_server_create_with_network_tag(self):
+        self.app.client_manager.compute.api_version = api_versions.APIVersion(
+            '2.43')
+
+        arglist = [
+            '--image', 'image1',
+            '--flavor', 'flavor1',
+            '--nic', 'net-id=net1,tag=foo',
+            self.new_server.name,
+        ]
+        verifylist = [
+            ('image', 'image1'),
+            ('flavor', 'flavor1'),
+            ('nics', [
+                {
+                    'net-id': 'net1', 'port-id': '',
+                    'v4-fixed-ip': '', 'v6-fixed-ip': '',
+                    'tag': 'foo',
+                },
+            ]),
+            ('server_name', self.new_server.name),
+        ]
+        parsed_args = self.check_parser(self.cmd, arglist, verifylist)
+
+        find_network = mock.Mock()
+        network_client = self.app.client_manager.network
+        network_client.find_network = find_network
+        network_resource = mock.Mock(id='net1_uuid')
+        find_network.return_value = network_resource
+
+        # Mock sdk APIs.
+        _network = mock.Mock(id='net1_uuid')
+        find_network = mock.Mock()
+        find_network.return_value = _network
+        self.app.client_manager.network.find_network = find_network
+
+        # In base command class ShowOne in cliff, abstract method take_action()
+        # returns a two-part tuple with a tuple of column names and a tuple of
+        # data to be shown.
+        columns, data = self.cmd.take_action(parsed_args)
+
+        # Set expected values
+        kwargs = dict(
+            meta=None,
+            files={},
+            reservation_id=None,
+            min_count=1,
+            max_count=1,
+            security_groups=[],
+            userdata=None,
+            key_name=None,
+            availability_zone=None,
+            admin_pass=None,
+            block_device_mapping_v2=[],
+            nics=[
+                {
+                    'net-id': 'net1_uuid',
+                    'v4-fixed-ip': '',
+                    'v6-fixed-ip': '',
+                    'port-id': '',
+                    'tag': 'foo',
+                },
+            ],
+            scheduler_hints={},
+            config_drive=None,
+        )
+        # ServerManager.create(name, image, flavor, **kwargs)
+        self.servers_mock.create.assert_called_with(
+            self.new_server.name,
+            self.image,
+            self.flavor,
+            **kwargs
+        )
+
+        self.assertEqual(self.columns, columns)
+        self.assertEqual(self.datalist(), data)
+
+        network_client.find_network.assert_called_once()
+        self.app.client_manager.network.find_network.assert_called_once()
+
+    def test_server_create_with_network_tag_pre_v243(self):
+        self.app.client_manager.compute.api_version = api_versions.APIVersion(
+            '2.42')
+
+        arglist = [
+            '--image', 'image1',
+            '--flavor', 'flavor1',
+            '--nic', 'net-id=net1,tag=foo',
+            self.new_server.name,
+        ]
+        verifylist = [
+            ('image', 'image1'),
+            ('flavor', 'flavor1'),
+            ('nics', [
+                {
+                    'net-id': 'net1', 'port-id': '',
+                    'v4-fixed-ip': '', 'v6-fixed-ip': '',
+                    'tag': 'foo',
+                },
+            ]),
+            ('server_name', self.new_server.name),
+        ]
+        parsed_args = self.check_parser(self.cmd, arglist, verifylist)
+
+        self.assertRaises(
+            exceptions.CommandError, self.cmd.take_action, parsed_args)
+
     def test_server_create_with_auto_network(self):
         arglist = [
             '--image', 'image1',

releasenotes/notes/add-server-nic-tagging-support-f77b4247e87771d5.yaml

@@ -0,0 +1,7 @@
+---
+features:
+  - |
+    The ``--nic`` option of the ``server create`` command now supports an
+    optional ``tag=<tag>`` key-value pair. This can be used to set a tag for
+    the interface in server metadata, which can be useful to maintain
+    persistent references to interfaces during various operations.