Remove the unused plugins framework

This framework was merged a year ago and AFAICT hasn't seen use beyond
the two initial wikimedia extensions for Nova.

The framework basically allows a way for a single plugin to register API
extensions and notification hooks. Both of these can be done by directly
using config opts like osapi_compute_extension and notification_driver
so this framework really only helps if we expected to (and wanted to)
lots of these plugins in the wild.

Nova is the only project using this and we don't have an active
maintainer listed in the MAINTAINERS file, so it seems like it's time to
remove it from the incubator.

Change-Id: I5552b5625e26f4821464807743545ec6f5117f2b

3 files changed, 0 insertions, 224 deletions

diff --git a/tests/unit/plugin/__init__.py b/tests/unit/plugin/__init__.py
deleted file mode 100644
index b706747..0000000
--- a/tests/unit/plugin/__init__.py
+++ /dev/null
@@ -1,14 +0,0 @@
-# Copyright 2012 OpenStack Foundation.
-# All Rights Reserved.
-#
-#    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.
diff --git a/tests/unit/plugin/test_callback_plugin.py b/tests/unit/plugin/test_callback_plugin.py
deleted file mode 100644
index 3f3fd63..0000000
--- a/tests/unit/plugin/test_callback_plugin.py
+++ /dev/null
@@ -1,92 +0,0 @@
-# Copyright 2012 OpenStack Foundation.
-# All Rights Reserved.
-#
-#    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.
-
-import pkg_resources
-
-from openstack.common.notifier import api as notifier_api
-from openstack.common.plugin import callbackplugin
-from openstack.common.plugin import pluginmanager
-from tests import utils as test_utils
-
-userdatastring = "magic user data string"
-
-
-class TestCBP(callbackplugin.CallbackPlugin):
-
-    def callback1(self, context, message, userdata):
-        self.callback1count += 1
-
-    def callback2(self, context, message, userdata):
-        self.callback2count += 1
-
-    def callback3(self, context, message, userdata):
-        self.callback3count += 1
-        self.userdata = userdata
-
-    def __init__(self, service_name):
-        super(TestCBP, self).__init__(service_name)
-        self.callback1count = 0
-        self.callback2count = 0
-        self.callback3count = 0
-
-        self._add_callback(self.callback1, 'type1', None)
-        self._add_callback(self.callback2, 'type1', None)
-        self._add_callback(self.callback3, 'type2', 'magic user data string')
-
-
-class CallbackTestCase(test_utils.BaseTestCase):
-    """Tests for the callback plugin convenience class."""
-
-    def test_callback_plugin_subclass(self):
-
-        class MockEntrypoint(pkg_resources.EntryPoint):
-            def load(self):
-                return TestCBP
-
-        def mock_iter_entry_points(_t):
-            return [MockEntrypoint("fake", "fake", ["fake"])]
-
-        self.stubs.Set(pkg_resources, 'iter_entry_points',
-                       mock_iter_entry_points)
-
-        plugmgr = pluginmanager.PluginManager("testproject", "testservice")
-        plugmgr.load_plugins()
-        self.assertEqual(len(plugmgr.plugins), 1)
-        plugin = plugmgr.plugins[0]
-        self.assertEqual(len(plugin.notifiers), 1)
-
-        notifier_api.notify('contextarg', 'publisher_id', 'type1',
-                            notifier_api.WARN, dict(a=3))
-
-        self.assertEqual(plugin.callback1count, 1)
-        self.assertEqual(plugin.callback2count, 1)
-        self.assertEqual(plugin.callback3count, 0)
-
-        notifier_api.notify('contextarg', 'publisher_id', 'type2',
-                            notifier_api.WARN, dict(a=3))
-
-        self.assertEqual(plugin.callback1count, 1)
-        self.assertEqual(plugin.callback2count, 1)
-        self.assertEqual(plugin.callback3count, 1)
-        self.assertEqual(plugin.userdata, userdatastring)
-
-        plugin._remove_callback(plugin.callback1)
-
-        notifier_api.notify('contextarg', 'publisher_id', 'type1',
-                            notifier_api.WARN, dict(a=3))
-
-        self.assertEqual(plugin.callback1count, 1)
-        self.assertEqual(plugin.callback2count, 2)
-        self.assertEqual(plugin.callback3count, 1)
diff --git a/tests/unit/test_plugin.py b/tests/unit/test_plugin.py
deleted file mode 100644
index fd653d7..0000000
--- a/tests/unit/test_plugin.py
+++ /dev/null
@@ -1,118 +0,0 @@
-# Copyright 2012 OpenStack Foundation.
-# All Rights Reserved.
-#
-#    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.
-
-import pkg_resources
-
-from openstack.common.notifier import api as notifier_api
-from openstack.common.plugin import plugin
-from openstack.common.plugin import pluginmanager
-from tests import utils
-
-
-class SimpleNotifier(object):
-    def __init__(self):
-        self.message_list = []
-
-    def notify(self, context, message):
-        self.context = context
-        self.message_list.append(message)
-
-
-class ManagerTestCase(utils.BaseTestCase):
-    def test_constructs(self):
-        manager1 = pluginmanager.PluginManager("testproject", "testservice")
-        self.assertNotEqual(manager1, False)
-
-
-class NotifyTestCase(utils.BaseTestCase):
-    """Test case for the plugin notification interface."""
-
-    def test_add_notifier(self):
-        notifier1 = SimpleNotifier()
-        notifier2 = SimpleNotifier()
-        notifier3 = SimpleNotifier()
-
-        testplugin = plugin.Plugin('service')
-        testplugin._add_notifier(notifier1)
-        testplugin._add_notifier(notifier2)
-        self.assertEqual(len(testplugin.notifiers), 2)
-
-        testplugin._add_notifier(notifier3)
-        self.assertEqual(len(testplugin.notifiers), 3)
-
-    def test_notifier_action(self):
-        def mock_iter_entry_points(_t):
-            return [MockEntrypoint("fake", "fake", ["fake"])]
-
-        self.stubs.Set(pkg_resources, 'iter_entry_points',
-                       mock_iter_entry_points)
-
-        plugmgr = pluginmanager.PluginManager("testproject", "testservice")
-        plugmgr.load_plugins()
-        self.assertEqual(len(plugmgr.plugins), 1)
-        self.assertEqual(len(plugmgr.plugins[0].notifiers), 1)
-        notifier = plugmgr.plugins[0].notifiers[0]
-
-        notifier_api.notify('contextarg', 'publisher_id', 'event_type',
-                            notifier_api.WARN, dict(a=3))
-
-        self.assertEqual(len(notifier.message_list), 1)
-
-
-class StubControllerExtension(object):
-    name = 'stubextension'
-    alias = 'stubby'
-
-
-class TestPluginClass(plugin.Plugin):
-
-    def __init__(self, service_name):
-        super(TestPluginClass, self).__init__(service_name)
-        self._add_api_extension_descriptor(StubControllerExtension)
-        notifier1 = SimpleNotifier()
-        self._add_notifier(notifier1)
-
-
-class MockEntrypoint(pkg_resources.EntryPoint):
-    def load(self):
-        return TestPluginClass
-
-
-class MockExtManager():
-    def __init__(self):
-        self.descriptors = []
-
-    def load_extension(self, descriptor):
-        self.descriptors.append(descriptor)
-
-
-class APITestCase(utils.BaseTestCase):
-    """Test case for the plugin api extension interface."""
-    def test_add_extension(self):
-        def mock_load(_s):
-            return TestPluginClass()
-
-        def mock_iter_entry_points(_t):
-            return [MockEntrypoint("fake", "fake", ["fake"])]
-
-        self.stubs.Set(pkg_resources, 'iter_entry_points',
-                       mock_iter_entry_points)
-
-        mgr = MockExtManager()
-        plugmgr = pluginmanager.PluginManager("testproject", "testservice")
-        plugmgr.load_plugins()
-        plugmgr.plugin_extension_factory(mgr)
-
-        self.assertTrue(StubControllerExtension in mgr.descriptors)