# vim: tabstop=4 shiftwidth=4 softtabstop=4 # # Copyright 2013 NEC Corporation. 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. # # @author: Akihiro Motoki import json import socket import mock from oslo.config import cfg from neutron.plugins.nec.common import exceptions as nexc from neutron.plugins.nec.common import ofc_client from neutron.tests import base class OFCClientTest(base.BaseTestCase): def _test_do_request(self, status, resbody, data, exctype=None, exc_checks=None): res = mock.Mock() res.status = status res.read.return_value = resbody conn = mock.Mock() conn.getresponse.return_value = res with mock.patch.object(ofc_client.OFCClient, 'get_connection', return_value=conn): client = ofc_client.OFCClient() if exctype: e = self.assertRaises(exctype, client.do_request, 'GET', '/somewhere', body={}) self.assertEqual(data, str(e)) if exc_checks: for k, v in exc_checks.items(): self.assertEqual(v, getattr(e, k)) else: response = client.do_request('GET', '/somewhere', body={}) self.assertEqual(response, data) headers = {"Content-Type": "application/json"} expected = [ mock.call.request('GET', '/somewhere', '{}', headers), mock.call.getresponse(), ] conn.assert_has_calls(expected) def test_do_request_200_json_value(self): self._test_do_request(200, json.dumps([1, 2, 3]), [1, 2, 3]) def test_do_request_200_string(self): self._test_do_request(200, 'abcdef', 'abcdef') def test_do_request_200_no_body(self): self._test_do_request(200, None, None) def test_do_request_other_success_codes(self): for status in [201, 202, 204]: self._test_do_request(status, None, None) def test_do_request_returns_404(self): resbody = '' errmsg = _("The specified OFC resource (/somewhere) is not found.") self._test_do_request(404, resbody, errmsg, nexc.OFCResourceNotFound) def test_do_request_error_no_body(self): errmsg = _("An OFC exception has occurred: Operation on OFC failed") exc_checks = {'status': 400, 'err_code': None, 'err_msg': None} self._test_do_request(400, None, errmsg, nexc.OFCException, exc_checks) def test_do_request_error_string_body(self): resbody = 'This is an error.' errmsg = _("An OFC exception has occurred: Operation on OFC failed") exc_checks = {'status': 400, 'err_code': None, 'err_msg': 'This is an error.'} self._test_do_request(400, resbody, errmsg, nexc.OFCException, exc_checks) def test_do_request_error_json_body(self): resbody = json.dumps({'err_code': 40022, 'err_msg': 'This is an error.'}) errmsg = _("An OFC exception has occurred: Operation on OFC failed") exc_checks = {'status': 400, 'err_code': 40022, 'err_msg': 'This is an error.'} self._test_do_request(400, resbody, errmsg, nexc.OFCException, exc_checks) def test_do_request_socket_error(self): conn = mock.Mock() conn.request.side_effect = socket.error data = _("An OFC exception has occurred: Failed to connect OFC : ") with mock.patch.object(ofc_client.OFCClient, 'get_connection', return_value=conn): client = ofc_client.OFCClient() e = self.assertRaises(nexc.OFCException, client.do_request, 'GET', '/somewhere', body={}) self.assertEqual(data, str(e)) for k in ['status', 'err_code', 'err_msg']: self.assertIsNone(getattr(e, k)) headers = {"Content-Type": "application/json"} expected = [ mock.call.request('GET', '/somewhere', '{}', headers), ] conn.assert_has_calls(expected) def test_do_request_retry_fail_after_one_attempts(self): self._test_do_request_retry_after(1, api_max_attempts=1) def test_do_request_retry_fail_with_max_attempts(self): self._test_do_request_retry_after(3) def test_do_request_retry_succeed_with_2nd_attempt(self): self._test_do_request_retry_after(2, succeed_final=True) def test_do_request_retry_succeed_with_1st_attempt(self): self._test_do_request_retry_after(1, succeed_final=True) def _test_do_request_retry_after(self, exp_request_count, api_max_attempts=None, succeed_final=False): if api_max_attempts is not None: cfg.CONF.set_override('api_max_attempts', api_max_attempts, group='OFC') res_unavail = mock.Mock() res_unavail.status = 503 res_unavail.read.return_value = None res_unavail.getheader.return_value = '10' res_ok = mock.Mock() res_ok.status = 200 res_ok.read.return_value = None conn = mock.Mock() if succeed_final: side_effect = [res_unavail] * (exp_request_count - 1) + [res_ok] else: side_effect = [res_unavail] * exp_request_count conn.getresponse.side_effect = side_effect with mock.patch.object(ofc_client.OFCClient, 'get_connection', return_value=conn): with mock.patch('time.sleep') as sleep: client = ofc_client.OFCClient() if succeed_final: ret = client.do_request('GET', '/somewhere') self.assertIsNone(ret) else: e = self.assertRaises(nexc.OFCServiceUnavailable, client.do_request, 'GET', '/somewhere') self.assertEqual('10', e.retry_after) headers = {"Content-Type": "application/json"} expected = [ mock.call.request('GET', '/somewhere', None, headers), mock.call.getresponse(), ] * exp_request_count conn.assert_has_calls(expected) self.assertEqual(exp_request_count, conn.request.call_count) self.assertEqual(exp_request_count - 1, sleep.call_count)