Remove commandmanager subclass

We've moved this functionality into cliff, so remove it here. This
will let us update cliff to optimize away the common case pkg_resources.

Change-Id: I75922010bdb29dbea530b6527c8b71eb064fdb30

lower-constraints.txt

@@ -3,7 +3,7 @@ amqp==2.1.1
 appdirs==1.3.0
 bandit==1.4.0
 cachetools==2.0.0
-cliff==2.8.0
+cliff==3.2.0
 cmd2==0.8.0
 contextlib2==0.4.0
 coverage==4.0

osc_lib/command/commandmanager.py

@@ -13,46 +13,9 @@
 #   under the License.
 #
 
-"""Modify cliff.CommandManager"""
-
 import cliff.commandmanager
-import pkg_resources
 
 
 class CommandManager(cliff.commandmanager.CommandManager):
-    """Add additional functionality to cliff.CommandManager
-
-    Load additional command groups after initialization
-    Add _command_group() methods
-    """
-
-    def __init__(self, namespace, convert_underscores=True):
-        self.group_list = []
-        super(CommandManager, self).__init__(namespace, convert_underscores)
-
-    def load_commands(self, namespace):
-        self.group_list.append(namespace)
-        return super(CommandManager, self).load_commands(namespace)
-
-    def add_command_group(self, group=None):
-        """Adds another group of command entrypoints"""
-        if group:
-            self.load_commands(group)
-
-    def get_command_groups(self):
-        """Returns a list of the loaded command groups"""
-        return self.group_list
-
-    def get_command_names(self, group=None):
-        """Returns a list of commands loaded for the specified group"""
-        group_list = []
-        if group is not None:
-            for ep in pkg_resources.iter_entry_points(group):
-                cmd_name = (
-                    ep.name.replace('_', ' ')
-                    if self.convert_underscores
-                    else ep.name
-                )
-                group_list.append(cmd_name)
-            return group_list
-        return list(self.commands.keys())
+    """Noop subclass for transition purposes."""
+    pass

osc_lib/shell.py

@@ -23,6 +23,7 @@ import traceback
 
 from cliff import app
 from cliff import command
+from cliff import commandmanager
 from cliff import complete
 from cliff import help
 from oslo_utils import importutils
@@ -30,7 +31,6 @@ from oslo_utils import strutils
 
 from osc_lib.cli import client_config as cloud_config
 from osc_lib import clientmanager
-from osc_lib.command import commandmanager
 from osc_lib.command import timing
 from osc_lib import exceptions as exc
 from osc_lib.i18n import _

osc_lib/tests/command/test_commandmanager.py

@@ -1,108 +0,0 @@
-#   Copyright 2012-2013 OpenStack Foundation
-#
-#   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 unittest import mock
-
-from osc_lib.command import commandmanager
-from osc_lib.tests import utils
-
-
-class FakeCommand(object):
-
-    @classmethod
-    def load(cls):
-        return cls
-
-    def __init__(self):
-        return
-
-
-FAKE_CMD_ONE = FakeCommand
-FAKE_CMD_TWO = FakeCommand
-FAKE_CMD_ALPHA = FakeCommand
-FAKE_CMD_BETA = FakeCommand
-
-
-class FakeCommandManager(commandmanager.CommandManager):
-    commands = {}
-
-    def load_commands(self, namespace):
-        if namespace == 'test':
-            self.commands['one'] = FAKE_CMD_ONE
-            self.commands['two'] = FAKE_CMD_TWO
-            self.group_list.append(namespace)
-        elif namespace == 'greek':
-            self.commands['alpha'] = FAKE_CMD_ALPHA
-            self.commands['beta'] = FAKE_CMD_BETA
-            self.group_list.append(namespace)
-
-
-class TestCommandManager(utils.TestCase):
-
-    def test_add_command_group(self):
-        mgr = FakeCommandManager('test')
-
-        # Make sure add_command() still functions
-        mock_cmd_one = mock.Mock()
-        mgr.add_command('mock', mock_cmd_one)
-        cmd_mock, name, args = mgr.find_command(['mock'])
-        self.assertEqual(mock_cmd_one, cmd_mock)
-
-        # Find a command added in initialization
-        cmd_one, name, args = mgr.find_command(['one'])
-        self.assertEqual(FAKE_CMD_ONE, cmd_one)
-
-        # Load another command group
-        mgr.add_command_group('greek')
-
-        # Find a new command
-        cmd_alpha, name, args = mgr.find_command(['alpha'])
-        self.assertEqual(FAKE_CMD_ALPHA, cmd_alpha)
-
-        # Ensure that the original commands were not overwritten
-        cmd_two, name, args = mgr.find_command(['two'])
-        self.assertEqual(FAKE_CMD_TWO, cmd_two)
-
-    def test_get_command_groups(self):
-        mgr = FakeCommandManager('test')
-
-        # Make sure add_command() still functions
-        mock_cmd_one = mock.Mock()
-        mgr.add_command('mock', mock_cmd_one)
-        cmd_mock, name, args = mgr.find_command(['mock'])
-        self.assertEqual(mock_cmd_one, cmd_mock)
-
-        # Load another command group
-        mgr.add_command_group('greek')
-
-        gl = mgr.get_command_groups()
-        self.assertEqual(['test', 'greek'], gl)
-
-    def test_get_command_names(self):
-        mock_cmd_one = mock.Mock()
-        mock_cmd_one.name = 'one'
-        mock_cmd_two = mock.Mock()
-        mock_cmd_two.name = 'cmd two'
-        mock_pkg_resources = mock.Mock(
-            return_value=[mock_cmd_one, mock_cmd_two],
-        )
-        with mock.patch(
-            'pkg_resources.iter_entry_points',
-            mock_pkg_resources,
-        ) as iter_entry_points:
-            mgr = commandmanager.CommandManager('test')
-            iter_entry_points.assert_called_once_with('test')
-            cmds = mgr.get_command_names('test')
-            self.assertEqual(['one', 'cmd two'], cmds)

releasenotes/notes/remove-group-subclass-82134e6915c7c782.yaml

@@ -0,0 +1,6 @@
+---
+upgrade:
+  - |
+    The ``osc_lib.command.commandmanager.CommandManager`` class is a
+    direct subclass of ``cliff.commandmanager.CommandManager``. The extra
+    osc_lib functionality has been shifted upstream into cliff.

requirements.txt

@@ -3,7 +3,7 @@
 # process, which may cause wedges in the gate later.
 pbr!=2.1.0,>=2.0.0 # Apache-2.0
 
-cliff!=2.9.0,>=2.8.0 # Apache-2.0
+cliff>=3.2.0 # Apache-2.0
 keystoneauth1>=3.14.0 # Apache-2.0
 openstacksdk>=0.15.0 # Apache-2.0
 oslo.i18n>=3.15.3 # Apache-2.0