Support "network create" command in nova network

This patch only provide network name and subnet setting for
"network create" command.

The other options, such as --project which depends on
identity v2 or v3, will make the unit tests too complicated.
So I prefer to implement them in other patches.

Change-Id: I9ec93f0af813c8fae4170c36e16bbe8f0f53cbb6
Partial-Bug: 1543672

Author: Tang Chen

doc/source/command-objects/network.rst

@@ -22,19 +22,23 @@ Create new network
 .. option:: --project <project>
 
     Owner's project (name or ID)
+    (Network v2 only)
 
 .. option:: --project-domain <project-domain>
 
     Domain the project belongs to (name or ID).
     This can be used in case collisions between project names exist.
+    (Network v2 only)
 
 .. option:: --enable
 
     Enable network (default)
+    (Network v2 only)
 
 .. option:: --disable
 
     Disable network
+    (Network v2 only)
 
 .. option:: --share
 
@@ -46,8 +50,14 @@ Create new network
 
 .. option:: --availability-zone-hint <availability-zone>
 
-     Availability Zone in which to create this network (requires the Network
-     Availability Zone extension, this option can be repeated).
+    Availability Zone in which to create this network (requires the Network
+    Availability Zone extension, this option can be repeated).
+    (Network v2 only)
+
+.. option:: --subnet <subnet>
+
+    IPv4 subnet for fixed IPs (in CIDR notation)
+    (Compute v2 network only)
 
 .. _network_create-name:
 .. describe:: <name>

openstackclient/network/v2/network.py

@@ -75,30 +75,27 @@ def _get_attrs(client_manager, parsed_args):
     return attrs
 
 
-class CreateNetwork(command.ShowOne):
+def _get_attrs_compute(client_manager, parsed_args):
+    attrs = {}
+    if parsed_args.name is not None:
+        attrs['label'] = str(parsed_args.name)
+    if parsed_args.shared is not None:
+        attrs['share_address'] = parsed_args.shared
+    if parsed_args.subnet is not None:
+        attrs['cidr'] = parsed_args.subnet
+
+    return attrs
+
+
+class CreateNetwork(common.NetworkAndComputeShowOne):
     """Create new network"""
 
-    def get_parser(self, prog_name):
-        parser = super(CreateNetwork, self).get_parser(prog_name)
+    def update_parser_common(self, parser):
         parser.add_argument(
             'name',
             metavar='<name>',
             help='New network name',
         )
-        admin_group = parser.add_mutually_exclusive_group()
-        admin_group.add_argument(
-            '--enable',
-            dest='admin_state',
-            action='store_true',
-            default=True,
-            help='Enable network (default)',
-        )
-        admin_group.add_argument(
-            '--disable',
-            dest='admin_state',
-            action='store_false',
-            help='Disable network',
-        )
         share_group = parser.add_mutually_exclusive_group()
         share_group.add_argument(
             '--share',
@@ -113,13 +110,29 @@ def get_parser(self, prog_name):
             action='store_false',
             help='Do not share the network between projects',
         )
+        return parser
+
+    def update_parser_network(self, parser):
+        admin_group = parser.add_mutually_exclusive_group()
+        admin_group.add_argument(
+            '--enable',
+            dest='admin_state',
+            action='store_true',
+            default=True,
+            help='Enable network (default)',
+        )
+        admin_group.add_argument(
+            '--disable',
+            dest='admin_state',
+            action='store_false',
+            help='Disable network',
+        )
         parser.add_argument(
             '--project',
             metavar='<project>',
             help="Owner's project (name or ID)"
         )
         identity_common.add_project_domain_option_to_parser(parser)
-
         parser.add_argument(
             '--availability-zone-hint',
             action='append',
@@ -131,16 +144,28 @@ def get_parser(self, prog_name):
         )
         return parser
 
-    def take_action(self, parsed_args):
-        client = self.app.client_manager.network
+    def update_parser_compute(self, parser):
+        parser.add_argument(
+            '--subnet',
+            metavar='<subnet>',
+            help="IPv4 subnet for fixed IPs (in CIDR notation)"
+        )
+        return parser
 
+    def take_action_network(self, client, parsed_args):
         attrs = _get_attrs(self.app.client_manager, parsed_args)
         obj = client.create_network(**attrs)
         columns = _get_columns(obj)
-
         data = utils.get_item_properties(obj, columns, formatters=_formatters)
         return (columns, data)
 
+    def take_action_compute(self, client, parsed_args):
+        attrs = _get_attrs_compute(self.app.client_manager, parsed_args)
+        obj = client.networks.create(**attrs)
+        columns = tuple(sorted(obj._info.keys()))
+        data = utils.get_dict_properties(obj._info, columns)
+        return (columns, data)
+
 
 class DeleteNetwork(common.NetworkAndComputeCommand):
     """Delete network(s)"""

openstackclient/tests/network/v2/test_network.py

@@ -576,6 +576,120 @@ def setUp(self):
         self.compute = self.app.client_manager.compute
 
 
+class TestCreateNetworkCompute(TestNetworkCompute):
+
+    # The network to create.
+    _network = compute_fakes.FakeNetwork.create_one_network()
+
+    columns = (
+        'bridge',
+        'bridge_interface',
+        'broadcast',
+        'cidr',
+        'cidr_v6',
+        'created_at',
+        'deleted',
+        'deleted_at',
+        'dhcp_server',
+        'dhcp_start',
+        'dns1',
+        'dns2',
+        'enable_dhcp',
+        'gateway',
+        'gateway_v6',
+        'host',
+        'id',
+        'injected',
+        'label',
+        'mtu',
+        'multi_host',
+        'netmask',
+        'netmask_v6',
+        'priority',
+        'project_id',
+        'rxtx_base',
+        'share_address',
+        'updated_at',
+        'vlan',
+        'vpn_private_address',
+        'vpn_public_address',
+        'vpn_public_port',
+    )
+
+    data = (
+        _network.bridge,
+        _network.bridge_interface,
+        _network.broadcast,
+        _network.cidr,
+        _network.cidr_v6,
+        _network.created_at,
+        _network.deleted,
+        _network.deleted_at,
+        _network.dhcp_server,
+        _network.dhcp_start,
+        _network.dns1,
+        _network.dns2,
+        _network.enable_dhcp,
+        _network.gateway,
+        _network.gateway_v6,
+        _network.host,
+        _network.id,
+        _network.injected,
+        _network.label,
+        _network.mtu,
+        _network.multi_host,
+        _network.netmask,
+        _network.netmask_v6,
+        _network.priority,
+        _network.project_id,
+        _network.rxtx_base,
+        _network.share_address,
+        _network.updated_at,
+        _network.vlan,
+        _network.vpn_private_address,
+        _network.vpn_public_address,
+        _network.vpn_public_port,
+    )
+
+    def setUp(self):
+        super(TestCreateNetworkCompute, self).setUp()
+
+        self.app.client_manager.network_endpoint_enabled = False
+
+        self.compute.networks.create.return_value = self._network
+
+        # Get the command object to test
+        self.cmd = network.CreateNetwork(self.app, None)
+
+    def test_create_no_options(self):
+        arglist = []
+        verifylist = []
+
+        # Missing required args should raise exception here
+        self.assertRaises(tests_utils.ParserException, self.check_parser,
+                          self.cmd, arglist, verifylist)
+
+    def test_create_default_options(self):
+        arglist = [
+            "--subnet", self._network.cidr,
+            self._network.label,
+        ]
+        verifylist = [
+            ('subnet', self._network.cidr),
+            ('name', self._network.label),
+        ]
+        parsed_args = self.check_parser(self.cmd, arglist, verifylist)
+
+        columns, data = self.cmd.take_action(parsed_args)
+
+        self.compute.networks.create.assert_called_with(**{
+            'cidr': self._network.cidr,
+            'label': self._network.label,
+        })
+        self.assertEqual(self.columns, columns)
+        self.assertEqual(self.data, data)
+
+
 class TestDeleteNetworkCompute(TestNetworkCompute):
 
     # The network to delete.

releasenotes/notes/bug-1543672-bad2fc4c6c8f3125.yaml

@@ -6,3 +6,5 @@ features:
     [Bug `1543672 <https://bugs.launchpad.net/python-openstackclient/+bug/1543672>`_]
   - Command ``network show`` is now available for nova network.
     [Bug `1543672 <https://bugs.launchpad.net/python-openstackclient/+bug/1543672>`_]
+  - Command ``network create`` is now available for nova network.
+    [Bug `1543672 <https://bugs.launchpad.net/python-openstackclient/+bug/1543672>`_]