Add RemoveNetwork command to server

This command will detach a server from a network. All server's
neutron ports that belongs to the specified networks will be removed.

Change-Id: I83a064ed62ab00c6f1016900b9cf30f1c15b8382

Author: Hongbin Lu

openstackclient/compute/v2/server.py

@@ -1542,6 +1542,41 @@ def take_action(self, parsed_args):
         server.interface_detach(port_id)
 
 
+class RemoveNetwork(command.Command):
+    _description = _("Remove all ports of a network from server")
+
+    def get_parser(self, prog_name):
+        parser = super(RemoveNetwork, self).get_parser(prog_name)
+        parser.add_argument(
+            "server",
+            metavar="<server>",
+            help=_("Server to remove the port from (name or ID)"),
+        )
+        parser.add_argument(
+            "network",
+            metavar="<network>",
+            help=_("Network to remove from the server (name or ID)"),
+        )
+        return parser
+
+    def take_action(self, parsed_args):
+        compute_client = self.app.client_manager.compute
+
+        server = utils.find_resource(
+            compute_client.servers, parsed_args.server)
+
+        if self.app.client_manager.is_network_endpoint_enabled():
+            network_client = self.app.client_manager.network
+            net_id = network_client.find_network(
+                parsed_args.network, ignore_missing=False).id
+        else:
+            net_id = parsed_args.network
+
+        for inf in server.interface_list():
+            if inf.net_id == net_id:
+                server.interface_detach(inf.port_id)
+
+
 class RemoveServerSecurityGroup(command.Command):
     _description = _("Remove security group from server")
 

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

@@ -2380,6 +2380,57 @@ def test_server_remove_port_no_neutron(self):
         self.find_port.assert_not_called()
 
 
+class TestServerRemoveNetwork(TestServer):
+
+    def setUp(self):
+        super(TestServerRemoveNetwork, self).setUp()
+
+        # Get the command object to test
+        self.cmd = server.RemoveNetwork(self.app, None)
+
+        # Set method to be tested.
+        self.fake_inf = mock.Mock()
+        self.methods = {
+            'interface_list': [self.fake_inf],
+            'interface_detach': None,
+        }
+
+        self.find_network = mock.Mock()
+        self.app.client_manager.network.find_network = self.find_network
+
+    def _test_server_remove_network(self, network_id):
+        self.fake_inf.net_id = network_id
+        self.fake_inf.port_id = 'fake-port'
+        servers = self.setup_servers_mock(count=1)
+        network = 'fake-network'
+
+        arglist = [
+            servers[0].id,
+            network,
+        ]
+        verifylist = [
+            ('server', servers[0].id),
+            ('network', network),
+        ]
+        parsed_args = self.check_parser(self.cmd, arglist, verifylist)
+
+        result = self.cmd.take_action(parsed_args)
+
+        servers[0].interface_list.assert_called_once_with()
+        servers[0].interface_detach.assert_called_once_with('fake-port')
+        self.assertIsNone(result)
+
+    def test_server_remove_network(self):
+        self._test_server_remove_network(self.find_network.return_value.id)
+        self.find_network.assert_called_once_with(
+            'fake-network', ignore_missing=False)
+
+    def test_server_remove_network_no_neutron(self):
+        self.app.client_manager.network_endpoint_enabled = False
+        self._test_server_remove_network('fake-network')
+        self.find_network.assert_not_called()
+
+
 @mock.patch(
     'openstackclient.api.compute_v2.APIv2.security_group_find'
 )

releasenotes/notes/add-server-remove-network-fb09c53d5b0c0068.yaml

@@ -0,0 +1,5 @@
+---
+features:
+  - |
+    Add ``server remove network`` command. This command will remove all
+    network ports from the specified network and instance.

setup.cfg

@@ -118,6 +118,7 @@ openstack.compute.v2 =
     server_remove_fixed_ip = openstackclient.compute.v2.server:RemoveFixedIP
     server_remove_floating_ip = openstackclient.compute.v2.server:RemoveFloatingIP
     server_remove_port = openstackclient.compute.v2.server:RemovePort
+    server_remove_network = openstackclient.compute.v2.server:RemoveNetwork
     server_remove_security_group = openstackclient.compute.v2.server:RemoveServerSecurityGroup
     server_remove_volume = openstackclient.compute.v2.server:RemoveServerVolume
     server_rescue = openstackclient.compute.v2.server:RescueServer