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# Copyright (c) 2013 Akira Yoshiyama <akirayoshiyama at gmail dot com>
#
# This is derived from test_db_servicegroup.py.
# Copyright 2012 IBM Corp.
#
# 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 iso8601
import mock
from nova import servicegroup
from nova import test
from oslo_utils import timeutils
class MemcachedServiceGroupTestCase(test.NoDBTestCase):
@mock.patch('nova.cache_utils.get_memcached_client')
def setUp(self, mgc_mock):
super(MemcachedServiceGroupTestCase, self).setUp()
self.mc_client = mock.MagicMock()
mgc_mock.return_value = self.mc_client
self.flags(servicegroup_driver='mc')
self.servicegroup_api = servicegroup.API()
def test_is_up(self):
service_ref = {
'host': 'fake-host',
'topic': 'compute'
}
self.mc_client.get.return_value = None
self.assertFalse(self.servicegroup_api.service_is_up(service_ref))
self.mc_client.get.assert_called_once_with('compute:fake-host')
self.mc_client.reset_mock()
self.mc_client.get.return_value = True
self.assertTrue(self.servicegroup_api.service_is_up(service_ref))
self.mc_client.get.assert_called_once_with('compute:fake-host')
def test_join(self):
service = mock.MagicMock(report_interval=1)
self.servicegroup_api.join('fake-host', 'fake-topic', service)
fn = self.servicegroup_api._driver._report_state
service.tg.add_timer_args.assert_called_once_with(
1, fn, args=[service], initial_delay=5)
def test_report_state(self):
service_ref = {
'host': 'fake-host',
'topic': 'compute'
}
service = mock.MagicMock(model_disconnected=False,
service_ref=service_ref)
fn = self.servicegroup_api._driver._report_state
fn(service)
self.mc_client.set.assert_called_once_with('compute:fake-host',
mock.ANY)
def test_get_updated_time(self):
updated_at_time = timeutils.parse_strtime("2016-04-18T02:56:25.198871")
service_ref = {
'host': 'fake-host',
'topic': 'compute',
'updated_at': updated_at_time.replace(tzinfo=iso8601.UTC)
}
# If no record returned from the mc, return record from DB
self.mc_client.get.return_value = None
self.assertEqual(service_ref['updated_at'],
self.servicegroup_api.get_updated_time(service_ref))
self.mc_client.get.assert_called_once_with('compute:fake-host')
# If the record in mc is newer than DB, return record from mc
self.mc_client.reset_mock()
retval = timeutils.utcnow()
self.mc_client.get.return_value = retval
self.assertEqual(retval.replace(tzinfo=iso8601.UTC),
self.servicegroup_api.get_updated_time(service_ref))
self.mc_client.get.assert_called_once_with('compute:fake-host')
# If the record in DB is newer than mc, return record from DB
self.mc_client.reset_mock()
service_ref['updated_at'] = \
retval.replace(tzinfo=iso8601.UTC)
self.mc_client.get.return_value = updated_at_time
self.assertEqual(service_ref['updated_at'],
self.servicegroup_api.get_updated_time(service_ref))
self.mc_client.get.assert_called_once_with('compute:fake-host')
# If no record returned from the DB, return the record from mc
self.mc_client.reset_mock()
service_ref['updated_at'] = None
self.mc_client.get.return_value = updated_at_time
self.assertEqual(updated_at_time.replace(tzinfo=iso8601.UTC),
self.servicegroup_api.get_updated_time(service_ref))
self.mc_client.get.assert_called_once_with('compute:fake-host')
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