[Subnet pool] Add 'subnet pool set' command support

This patch supports setting a new name, pool prefix,
default prefix length, minimum prefix length,
and maximum prefix length for a subnet pool.

Change-Id: I65bd71e0f54f2f65acefbc542df67a1b1ec26397
Partial-Bug: #1544591
Related-to: blueprint neutron-client

2 files changed, 180 insertions, 6 deletions

diff --git a/openstackclient/network/v2/subnet_pool.py b/openstackclient/network/v2/subnet_pool.py
index 5bb45c12..19cd46c9 100644
--- a/openstackclient/network/v2/subnet_pool.py
+++ b/openstackclient/network/v2/subnet_pool.py
@@ -14,6 +14,8 @@
 """Subnet pool action implementations"""
 
 from openstackclient.common import command
+from openstackclient.common import exceptions
+from openstackclient.common import parseractions
 from openstackclient.common import utils
 
 
@@ -30,6 +32,51 @@ _formatters = {
 }
 
 
+def _get_attrs(parsed_args):
+    attrs = {}
+    if parsed_args.name is not None:
+        attrs['name'] = str(parsed_args.name)
+    if parsed_args.prefixes is not None:
+        attrs['prefixes'] = parsed_args.prefixes
+    if parsed_args.default_prefix_length is not None:
+        attrs['default_prefix_length'] = parsed_args.default_prefix_length
+    if parsed_args.min_prefix_length is not None:
+        attrs['min_prefix_length'] = parsed_args.min_prefix_length
+    if parsed_args.max_prefix_length is not None:
+        attrs['max_prefix_length'] = parsed_args.max_prefix_length
+
+    return attrs
+
+
+def _add_prefix_options(parser):
+    parser.add_argument(
+        '--pool-prefix',
+        metavar='<pool-prefix>',
+        dest='prefixes',
+        action='append',
+        help='Set subnet pool prefixes (in CIDR notation). '
+             'Repeat this option to set multiple prefixes.',
+    )
+    parser.add_argument(
+        '--default-prefix-length',
+        metavar='<default-prefix-length>',
+        action=parseractions.NonNegativeAction,
+        help='Set subnet pool default prefix length',
+    )
+    parser.add_argument(
+        '--min-prefix-length',
+        metavar='<min-prefix-length>',
+        action=parseractions.NonNegativeAction,
+        help='Set subnet pool minimum prefix length',
+    )
+    parser.add_argument(
+        '--max-prefix-length',
+        metavar='<max-prefix-length>',
+        action=parseractions.NonNegativeAction,
+        help='Set subnet pool maximum prefix length',
+    )
+
+
 class DeleteSubnetPool(command.Command):
     """Delete subnet pool"""
 
@@ -37,8 +84,8 @@ class DeleteSubnetPool(command.Command):
         parser = super(DeleteSubnetPool, self).get_parser(prog_name)
         parser.add_argument(
             'subnet_pool',
-            metavar="<subnet-pool>",
-            help=("Subnet pool to delete (name or ID)")
+            metavar='<subnet-pool>',
+            help='Subnet pool to delete (name or ID)'
         )
         return parser
 
@@ -98,6 +145,42 @@ class ListSubnetPool(command.Lister):
                 ) for s in data))
 
 
+class SetSubnetPool(command.Command):
+    """Set subnet pool properties"""
+
+    def get_parser(self, prog_name):
+        parser = super(SetSubnetPool, self).get_parser(prog_name)
+        parser.add_argument(
+            'subnet_pool',
+            metavar='<subnet-pool>',
+            help='Subnet pool to modify (name or ID)'
+        )
+        parser.add_argument(
+            '--name',
+            metavar='<name>',
+            help='Set subnet pool name',
+        )
+        _add_prefix_options(parser)
+
+        return parser
+
+    def take_action(self, parsed_args):
+        client = self.app.client_manager.network
+        obj = client.find_subnet_pool(parsed_args.subnet_pool,
+                                      ignore_missing=False)
+
+        attrs = _get_attrs(parsed_args)
+        if attrs == {}:
+            msg = "Nothing specified to be set"
+            raise exceptions.CommandError(msg)
+
+        # Existing prefixes must be a subset of the new prefixes.
+        if 'prefixes' in attrs:
+            attrs['prefixes'].extend(obj.prefixes)
+
+        client.update_subnet_pool(obj, **attrs)
+
+
 class ShowSubnetPool(command.ShowOne):
     """Display subnet pool details"""
 
@@ -105,8 +188,8 @@ class ShowSubnetPool(command.ShowOne):
         parser = super(ShowSubnetPool, self).get_parser(prog_name)
         parser.add_argument(
             'subnet_pool',
-            metavar="<subnet-pool>",
-            help=("Subnet pool to display (name or ID)")
+            metavar='<subnet-pool>',
+            help='Subnet pool to display (name or ID)'
         )
         return parser
 
diff --git a/openstackclient/tests/network/v2/test_subnet_pool.py b/openstackclient/tests/network/v2/test_subnet_pool.py
index c4e3340d..9c372ac0 100644
--- a/openstackclient/tests/network/v2/test_subnet_pool.py
+++ b/openstackclient/tests/network/v2/test_subnet_pool.py
@@ -11,8 +11,10 @@
 #   under the License.
 #
 
+import argparse
 import mock
 
+from openstackclient.common import exceptions
 from openstackclient.common import utils
 from openstackclient.network.v2 import subnet_pool
 from openstackclient.tests.network.v2 import fakes as network_fakes
@@ -129,6 +131,96 @@ class TestListSubnetPool(TestSubnetPool):
         self.assertEqual(self.data_long, list(data))
 
 
+class TestSetSubnetPool(TestSubnetPool):
+
+    # The subnet_pool to set.
+    _subnet_pool = network_fakes.FakeSubnetPool.create_one_subnet_pool()
+
+    def setUp(self):
+        super(TestSetSubnetPool, self).setUp()
+
+        self.network.update_subnet_pool = mock.Mock(return_value=None)
+
+        self.network.find_subnet_pool = mock.Mock(
+            return_value=self._subnet_pool)
+
+        # Get the command object to test
+        self.cmd = subnet_pool.SetSubnetPool(self.app, self.namespace)
+
+    def test_set_this(self):
+        arglist = [
+            self._subnet_pool.name,
+            '--name', 'noob',
+            '--default-prefix-length', '8',
+            '--min-prefix-length', '8',
+        ]
+        verifylist = [
+            ('subnet_pool', self._subnet_pool.name),
+            ('name', 'noob'),
+            ('default_prefix_length', '8'),
+            ('min_prefix_length', '8'),
+        ]
+        parsed_args = self.check_parser(self.cmd, arglist, verifylist)
+
+        result = self.cmd.take_action(parsed_args)
+
+        attrs = {
+            'name': 'noob',
+            'default_prefix_length': '8',
+            'min_prefix_length': '8',
+        }
+        self.network.update_subnet_pool.assert_called_with(
+            self._subnet_pool, **attrs)
+        self.assertIsNone(result)
+
+    def test_set_that(self):
+        arglist = [
+            self._subnet_pool.name,
+            '--pool-prefix', '10.0.1.0/24',
+            '--pool-prefix', '10.0.2.0/24',
+            '--max-prefix-length', '16',
+        ]
+        verifylist = [
+            ('subnet_pool', self._subnet_pool.name),
+            ('prefixes', ['10.0.1.0/24', '10.0.2.0/24']),
+            ('max_prefix_length', '16'),
+        ]
+        parsed_args = self.check_parser(self.cmd, arglist, verifylist)
+
+        result = self.cmd.take_action(parsed_args)
+
+        prefixes = ['10.0.1.0/24', '10.0.2.0/24']
+        prefixes.extend(self._subnet_pool.prefixes)
+        attrs = {
+            'prefixes': prefixes,
+            'max_prefix_length': '16',
+        }
+        self.network.update_subnet_pool.assert_called_with(
+            self._subnet_pool, **attrs)
+        self.assertIsNone(result)
+
+    def test_set_nothing(self):
+        arglist = [self._subnet_pool.name, ]
+        verifylist = [('subnet_pool', self._subnet_pool.name), ]
+        parsed_args = self.check_parser(self.cmd, arglist, verifylist)
+
+        self.assertRaises(exceptions.CommandError, self.cmd.take_action,
+                          parsed_args)
+
+    def test_set_len_negative(self):
+        arglist = [
+            self._subnet_pool.name,
+            '--max-prefix-length', '-16',
+        ]
+        verifylist = [
+            ('subnet_pool', self._subnet_pool.name),
+            ('max_prefix_length', '-16'),
+        ]
+
+        self.assertRaises(argparse.ArgumentTypeError, self.check_parser,
+                          self.cmd, arglist, verifylist)
+
+
 class TestShowSubnetPool(TestSubnetPool):
 
     # The subnet_pool to set.
@@ -189,14 +281,13 @@ class TestShowSubnetPool(TestSubnetPool):
         verifylist = [
             ('subnet_pool', self._subnet_pool.name),
         ]
-
         parsed_args = self.check_parser(self.cmd, arglist, verifylist)
+
         columns, data = self.cmd.take_action(parsed_args)
 
         self.network.find_subnet_pool.assert_called_with(
             self._subnet_pool.name,
             ignore_missing=False
         )
-
         self.assertEqual(self.columns, columns)
         self.assertEqual(self.data, data)