deb-python-cinderclient/cinderclient/tests/unit/test_exceptions.py
Yuriy Nesenenko f8eef18297 Cinder client should retry with Retry-After value
If a request fails but the response contains a "Retry-After",
the cinder client should wait the amount of time and then retry.
Cinder client should report a warning to user and continue with
retry, so that user can cancel the operation if not interested
in retry. The value in "Retry-After" header will be in seconds
or GMT value, client should handle both the cases.

How many times client should retry will be controlled by user
through "--retries" argument to cinder api example,
$ cinder --retries 3 availability-zone-list

If request was not sucessful within the retries, client should
raise the exception.

Change-Id: I99af957bfbbe3a202b148dc2fcafdd20b5d7cda0
Partial-Bug: #1263069
2016-07-06 11:42:20 +03:00

65 lines
2.4 KiB
Python

# Copyright 2015 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.
"""Tests the cinderclient.exceptions module."""
import datetime
import mock
import requests
from cinderclient import exceptions
from cinderclient.tests.unit import utils
class ExceptionsTest(utils.TestCase):
def test_from_response_no_body_message(self):
# Tests that we get ClientException back since we don't have 500 mapped
response = requests.Response()
response.status_code = 500
body = {'keys': ({})}
ex = exceptions.from_response(response, body)
self.assertIs(exceptions.ClientException, type(ex))
self.assertEqual('n/a', ex.message)
def test_from_response_overlimit(self):
response = requests.Response()
response.status_code = 413
response.headers = {"Retry-After": '10'}
body = {'keys': ({})}
ex = exceptions.from_response(response, body)
self.assertEqual(10, ex.retry_after)
self.assertIs(exceptions.OverLimit, type(ex))
@mock.patch('oslo_utils.timeutils.utcnow',
return_value=datetime.datetime(2016, 6, 30, 12, 41, 55))
def test_from_response_overlimit_gmt(self, mock_utcnow):
response = requests.Response()
response.status_code = 413
response.headers = {"Retry-After": "Thu, 30 Jun 2016 12:43:20 GMT"}
body = {'keys': ({})}
ex = exceptions.from_response(response, body)
self.assertEqual(85, ex.retry_after)
self.assertIs(exceptions.OverLimit, type(ex))
self.assertTrue(mock_utcnow.called)
def test_from_response_overlimit_without_header(self):
response = requests.Response()
response.status_code = 413
response.headers = {}
body = {'keys': ({})}
ex = exceptions.from_response(response, body)
self.assertEqual(0, ex.retry_after)
self.assertIs(exceptions.OverLimit, type(ex))