Add configuration-list to OSC

This change adds database support to the python-openstackclient
project for the configuraiton-list command.

The trove command configuration-list is now:
    openstack database configuration list

Change-Id: I3a85260c15b8d1b4a37a806db2cb5ff3c433537b
Partially-Implements: trove-support-in-python-openstackclient

releasenotes/notes/add-configuration-list-to-osc-4a12d508f6bb5472.yaml

@@ -0,0 +1,5 @@
+---
+features:
+  - The command ``trove configuration-list`` is now available to
+    use in the python-openstackclient CLI as ``openstack database
+    configuration list``

setup.cfg

@@ -32,6 +32,7 @@ openstack.cli.extension =
 openstack.database.v1 =
     database_backup_list = troveclient.osc.v1.database_backups:ListDatabaseBackups
     database_cluster_list = troveclient.osc.v1.database_clusters:ListDatabaseClusters
+    database_configuration_list = troveclient.osc.v1.database_configurations:ListDatabaseConfigurations
     database_flavor_list = troveclient.osc.v1.database_flavors:ListDatabaseFlavors
 
 [build_sphinx]

troveclient/osc/v1/database_configurations.py

@@ -0,0 +1,53 @@
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+"""Database v1 Configurations action implementations"""
+
+from osc_lib.command import command
+from osc_lib import utils as osc_utils
+
+from troveclient.i18n import _
+
+
+class ListDatabaseConfigurations(command.Lister):
+
+    _description = _("List database configurations")
+    columns = ['ID', 'Name', 'Description', 'Datastore Name',
+               'Datastore Version Name']
+
+    def get_parser(self, prog_name):
+        parser = super(ListDatabaseConfigurations, self).get_parser(prog_name)
+        parser.add_argument(
+            '--limit',
+            dest='limit',
+            metavar='<limit>',
+            type=int,
+            default=None,
+            help=_('Limit the number of results displayed.')
+        )
+        parser.add_argument(
+            '--marker',
+            dest='marker',
+            metavar='<ID>',
+            help=_('Begin displaying the results for IDs greater than the '
+                   'specified marker. When used with --limit, set this to '
+                   'the last ID displayed in the previous run.')
+        )
+        return parser
+
+    def take_action(self, parsed_args):
+        db_configurations = self.app.client_manager.database.configurations
+        config = db_configurations.list(limit=parsed_args.limit,
+                                        marker=parsed_args.marker)
+        config = [osc_utils.get_item_properties(c, self.columns)
+                  for c in config]
+        return self.columns, config

troveclient/tests/osc/v1/fakes.py

@@ -45,3 +45,11 @@ class FakeClusters(object):
 
     def get_clusters_cls_1234(self):
         return clusters.Cluster(None, self.fake_clusters[0])
+
+
+class FakeConfigurations(object):
+    fake_config = (fakes.FakeHTTPClient().get_configurations()
+                   [2]['configurations'])
+
+    def get_configurations_c_123(self):
+        return flavors.Flavor(None, self.fake_config[0])

troveclient/tests/osc/v1/test_database_configurations.py

@@ -0,0 +1,49 @@
+#   Licensed under the Apache License, Version 2.0 (the "License"); you may
+#   not use this file except in compliance with the License. You may obtain
+#   a copy of the License at
+#
+#        http://www.apache.org/licenses/LICENSE-2.0
+#
+#   Unless required by applicable law or agreed to in writing, software
+#   distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#   WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#   License for the specific language governing permissions and limitations
+#   under the License.
+
+from troveclient import common
+from troveclient.osc.v1 import database_configurations
+from troveclient.tests.osc.v1 import fakes
+
+
+class TestConfigurations(fakes.TestDatabasev1):
+    fake_configurations = fakes.FakeConfigurations()
+
+    def setUp(self):
+        super(TestConfigurations, self).setUp()
+        self.mock_client = self.app.client_manager.database
+        self.configuration_client = (self.app.client_manager.database.
+                                     configurations)
+
+
+class TestConfigurationList(TestConfigurations):
+    defaults = {
+        'limit': None,
+        'marker': None
+    }
+
+    columns = database_configurations.ListDatabaseConfigurations.columns
+    values = ('c-123', 'test_config', '', 'mysql', '5.6')
+
+    def setUp(self):
+        super(TestConfigurationList, self).setUp()
+        self.cmd = database_configurations.ListDatabaseConfigurations(self.app,
+                                                                      None)
+        data = [self.fake_configurations.get_configurations_c_123()]
+        self.configuration_client.list.return_value = common.Paginated(data)
+
+    def test_configuration_list_defaults(self):
+        parsed_args = self.check_parser(self.cmd, [], [])
+        columns, data = self.cmd.take_action(parsed_args)
+        self.configuration_client.list.assert_called_once_with(**self.defaults)
+        self.assertEqual(self.columns, columns)
+        self.assertEqual([tuple(self.values)], data)