028d6a8b68
We are replacing all usages of the retrying package with tenacity with an end goal of removing the retrying package from our requirements. This patch also demonstrate how to use the new api to retry only for some of the exception error codes Change-Id: Ie1b082848ac6153d29af7779de914071dc8c1ba5
80 lines
3.2 KiB
Python
80 lines
3.2 KiB
Python
# Copyright (c) 2014 VMware.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from neutron.tests import base
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from vmware_nsx.plugins.nsx_v.vshield.common import exceptions
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from vmware_nsx.plugins.nsx_v.vshield import vcns
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def raise_until_attempt(attempt, exception):
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def raises_until():
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if raises_until.current_attempt < attempt:
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raises_until.current_attempt += 1
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raise exception
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else:
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return raises_until.current_attempt
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raises_until.current_attempt = 1
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return raises_until
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class TestMisc(base.BaseTestCase):
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response = """
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<error><details>Dummy</details><errorCode>1</errorCode>
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<moduleName>core-services</moduleName></error>
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"""
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def test_retry_on_exception_one_attempt(self):
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success_on_first_attempt = raise_until_attempt(
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1, exceptions.RequestBad(uri='', response=''))
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should_return_one = vcns.retry_upon_exception(
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exceptions.RequestBad,
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max_attempts=1)(success_on_first_attempt)
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self.assertEqual(1, should_return_one())
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def test_retry_on_exception_five_attempts(self):
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success_on_fifth_attempt = raise_until_attempt(
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5, exceptions.RequestBad(uri='', response=''))
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should_return_five = vcns.retry_upon_exception(
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exceptions.RequestBad,
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max_attempts=10)(success_on_fifth_attempt)
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self.assertEqual(5, should_return_five())
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def test_retry_on_exception_exceed_attempts(self):
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success_on_fifth_attempt = raise_until_attempt(
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5, exceptions.RequestBad(uri='', response=''))
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should_raise = vcns.retry_upon_exception(
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exceptions.RequestBad,
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max_attempts=4)(success_on_fifth_attempt)
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self.assertRaises(exceptions.RequestBad, should_raise)
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def test_retry_on_exception_exclude_error_codes_retry(self):
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success_on_fifth_attempt = raise_until_attempt(
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5, exceptions.RequestBad(uri='', response=self.response))
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# excluding another error code, so should retry
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should_return_five = vcns.retry_upon_exception_exclude_error_codes(
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exceptions.RequestBad, [2],
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max_attempts=10)(success_on_fifth_attempt)
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self.assertEqual(5, should_return_five())
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def test_retry_on_exception_exclude_error_codes_raise(self):
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success_on_fifth_attempt = raise_until_attempt(
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5, exceptions.RequestBad(uri='', response=self.response))
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# excluding the returned error code, so no retries are expected
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should_raise = vcns.retry_upon_exception_exclude_error_codes(
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exceptions.RequestBad, [1],
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max_attempts=10)(success_on_fifth_attempt)
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self.assertRaises(exceptions.RequestBad, should_raise)
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