A set of Neutron drivers for the VMware NSX.
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# Copyright (c) 2014 VMware.
#
# 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 neutron.tests import base
from vmware_nsx.neutron.plugins.vmware.vshield.common import exceptions
from vmware_nsx.neutron.plugins.vmware.vshield import vcns
def raise_until_attempt(attempt, exception):
def raises_until():
if raises_until.current_attempt < attempt:
raises_until.current_attempt += 1
raise exception
else:
return raises_until.current_attempt
raises_until.current_attempt = 1
return raises_until
class TestMisc(base.BaseTestCase):
def test_retry_on_exception_one_attempt(self):
success_on_first_attempt = raise_until_attempt(
1, exceptions.RequestBad(uri='', response=''))
should_return_one = vcns.retry_upon_exception(
exceptions.RequestBad, max_attempts=1)(success_on_first_attempt)
self.assertEqual(1, should_return_one())
def test_retry_on_exception_five_attempts(self):
success_on_fifth_attempt = raise_until_attempt(
5, exceptions.RequestBad(uri='', response=''))
should_return_five = vcns.retry_upon_exception(
exceptions.RequestBad, max_attempts=10)(success_on_fifth_attempt)
self.assertEqual(5, should_return_five())
def test_retry_on_exception_exceed_attempts(self):
success_on_fifth_attempt = raise_until_attempt(
5, exceptions.RequestBad(uri='', response=''))
should_raise = vcns.retry_upon_exception(
exceptions.RequestBad, max_attempts=4)(success_on_fifth_attempt)
self.assertRaises(exceptions.RequestBad, should_raise)