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# 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)
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