Enable to specify which vm fixed-ip to publish

This change enables to specify which vm fixed-ip will be associated to a
floating ip using:

 openstack server add floating ip <vm> <fip> --fixed-ip-address <ip>

Closes-Bug: #1624524
Change-Id: I2ddb68c5873bfed7293b0e661d1adbe111681136

doc/source/command-objects/server.rst

@@ -33,9 +33,14 @@ Add floating IP address to server
 .. code:: bash
 
     openstack server add floating ip
+        [--fixed-ip-address <fixed-ip-address>]
         <server>
         <ip-address>
 
+.. option:: --fixed-ip-address <fixed-ip-address>
+
+    Fixed IP address to associate with this floating IP address
+
 .. describe:: <server>
 
     Server (name or ID) to receive the floating IP address

openstackclient/compute/v2/server.py

@@ -235,6 +235,12 @@ class AddFloatingIP(command.Command):
             help=_("Floating IP address (IP address only) to assign "
                    "to server"),
         )
+        parser.add_argument(
+            "--fixed-ip-address",
+            metavar="<fixed-ip-address>",
+            help=_("Fixed IP address to associate with this floating IP "
+                   "address"),
+        )
         return parser
 
     def take_action(self, parsed_args):
@@ -243,7 +249,8 @@ class AddFloatingIP(command.Command):
         server = utils.find_resource(
             compute_client.servers, parsed_args.server)
 
-        server.add_floating_ip(parsed_args.ip_address)
+        server.add_floating_ip(parsed_args.ip_address,
+                               parsed_args.fixed_ip_address)
 
 
 class AddServerSecurityGroup(command.Command):

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

@@ -146,24 +146,33 @@ class TestServerAddFloatingIP(TestServer):
             'add_floating_ip': None,
         }
 
-    def test_server_add_floating_ip(self):
+    def _test_server_add_floating_ip(self, extralist, fixed_ip_address):
         servers = self.setup_servers_mock(count=1)
 
         arglist = [
             servers[0].id,
             '1.2.3.4',
-        ]
+        ] + extralist
         verifylist = [
             ('server', servers[0].id),
             ('ip_address', '1.2.3.4'),
+            ('fixed_ip_address', fixed_ip_address),
         ]
         parsed_args = self.check_parser(self.cmd, arglist, verifylist)
 
         result = self.cmd.take_action(parsed_args)
 
-        servers[0].add_floating_ip.assert_called_once_with('1.2.3.4')
+        servers[0].add_floating_ip.assert_called_once_with('1.2.3.4',
+                                                           fixed_ip_address)
         self.assertIsNone(result)
 
+    def test_server_add_floating_ip(self):
+        self._test_server_add_floating_ip([], None)
+
+    def test_server_add_floating_ip_to_fixed_ip(self):
+        extralist = ['--fixed-ip-address', '5.6.7.8']
+        self._test_server_add_floating_ip(extralist, '5.6.7.8')
+
 
 class TestServerAddSecurityGroup(TestServer):
 

releasenotes/notes/allow-to-specify-vm-ip-to-publish-85f7207740c0cc8d.yaml

@@ -0,0 +1,5 @@
+---
+features:
+    - |
+      Add ``--fixed-ip-address`` option to the ``server add floating ip`` command
+      [Bug `1624524 <https://bugs.launchpad.net/python-openstackclient/+bug/1624524>`_]