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#
# Copyright (C) 2016 Red Hat, Inc.
#
# 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 mock
from datetime import datetime
from datetime import timedelta
from networking_odl.common import constants as odl_const
from networking_odl.db import db
from networking_odl.db import models
from neutron.db import api as neutron_db_api
from neutron.tests.unit.testlib_api import SqlTestCaseLight
from oslo_db.exception import DBDeadlock
from unittest2.case import TestCase
class DbTestCase(SqlTestCaseLight, TestCase):
UPDATE_ROW = [odl_const.ODL_NETWORK, 'id', odl_const.ODL_UPDATE,
{'test': 'data'}]
def setUp(self):
super(DbTestCase, self).setUp()
self.db_session = neutron_db_api.get_session()
self.addCleanup(self._db_cleanup)
def _db_cleanup(self):
self.db_session.query(models.OpendaylightJournal).delete()
def _update_row(self, row):
self.db_session.merge(row)
self.db_session.flush()
def _test_validate_updates(self, rows, time_deltas, expected_validations):
for row in rows:
db.create_pending_row(self.db_session, *row)
# update row created_at
rows = db.get_all_db_rows(self.db_session)
now = datetime.now()
for row, time_delta in zip(rows, time_deltas):
row.created_at = now - timedelta(hours=time_delta)
self._update_row(row)
# validate if there are older rows
for row, expected_valid in zip(rows, expected_validations):
valid = not db.check_for_older_ops(self.db_session, row)
self.assertEqual(expected_valid, valid)
def _test_retry_count(self, retry_num, max_retry,
expected_retry_count, expected_state):
# add new pending row
db.create_pending_row(self.db_session, *self.UPDATE_ROW)
# update the row with the requested retry_num
row = db.get_all_db_rows(self.db_session)[0]
row.retry_count = retry_num - 1
db.update_pending_db_row_retry(self.db_session, row, max_retry)
# validate the state and the retry_count of the row
row = db.get_all_db_rows(self.db_session)[0]
self.assertEqual(expected_state, row.state)
self.assertEqual(expected_retry_count, row.retry_count)
def _test_update_row_state(self, from_state, to_state):
# add new pending row
db.create_pending_row(self.db_session, *self.UPDATE_ROW)
row = db.get_all_db_rows(self.db_session)[0]
for state in [from_state, to_state]:
# update the row state
db.update_db_row_state(self.db_session, row, state)
# validate the new state
row = db.get_all_db_rows(self.db_session)[0]
self.assertEqual(state, row.state)
def test_validate_updates_same_object_uuid(self):
self._test_validate_updates(
[self.UPDATE_ROW, self.UPDATE_ROW], [1, 0], [True, False])
def test_validate_updates_same_created_time(self):
self._test_validate_updates(
[self.UPDATE_ROW, self.UPDATE_ROW], [0, 0], [True, True])
def test_validate_updates_different_object_uuid(self):
other_row = list(self.UPDATE_ROW)
other_row[1] += 'a'
self._test_validate_updates(
[self.UPDATE_ROW, other_row], [1, 0], [True, True])
def test_validate_updates_different_object_type(self):
other_row = list(self.UPDATE_ROW)
other_row[0] = odl_const.ODL_PORT
other_row[1] += 'a'
self._test_validate_updates(
[self.UPDATE_ROW, other_row], [1, 0], [True, True])
def test_get_oldest_pending_row_none_when_no_rows(self):
row = db.get_oldest_pending_db_row_with_lock(self.db_session)
self.assertIsNone(row)
def _test_get_oldest_pending_row_none(self, state):
db.create_pending_row(self.db_session, *self.UPDATE_ROW)
row = db.get_all_db_rows(self.db_session)[0]
row.state = state
self._update_row(row)
row = db.get_oldest_pending_db_row_with_lock(self.db_session)
self.assertIsNone(row)
def test_get_oldest_pending_row_none_when_row_processing(self):
self._test_get_oldest_pending_row_none(odl_const.PROCESSING)
def test_get_oldest_pending_row_none_when_row_failed(self):
self._test_get_oldest_pending_row_none(odl_const.FAILED)
def test_get_oldest_pending_row_none_when_row_completed(self):
self._test_get_oldest_pending_row_none(odl_const.COMPLETED)
def test_get_oldest_pending_row(self):
db.create_pending_row(self.db_session, *self.UPDATE_ROW)
row = db.get_oldest_pending_db_row_with_lock(self.db_session)
self.assertIsNotNone(row)
self.assertEqual(odl_const.PROCESSING, row.state)
def test_get_oldest_pending_row_order(self):
db.create_pending_row(self.db_session, *self.UPDATE_ROW)
older_row = db.get_all_db_rows(self.db_session)[0]
older_row.last_retried -= timedelta(minutes=1)
self._update_row(older_row)
db.create_pending_row(self.db_session, *self.UPDATE_ROW)
row = db.get_oldest_pending_db_row_with_lock(self.db_session)
self.assertEqual(older_row, row)
def test_get_oldest_pending_row_when_deadlock(self):
db.create_pending_row(self.db_session, *self.UPDATE_ROW)
update_mock = mock.MagicMock(side_effect=(DBDeadlock, mock.DEFAULT))
# Mocking is mandatory to achieve a deadlock regardless of the DB
# backend being used when running the tests
with mock.patch.object(db, 'update_db_row_state', new=update_mock):
row = db.get_oldest_pending_db_row_with_lock(self.db_session)
self.assertIsNotNone(row)
self.assertEqual(2, update_mock.call_count)
def test_valid_retry_count(self):
self._test_retry_count(1, 1, 1, odl_const.PENDING)
def test_invalid_retry_count(self):
self._test_retry_count(2, 1, 1, odl_const.FAILED)
def test_update_row_state_to_pending(self):
self._test_update_row_state(odl_const.PROCESSING, odl_const.PENDING)
def test_update_row_state_to_processing(self):
self._test_update_row_state(odl_const.PENDING, odl_const.PROCESSING)
def test_update_row_state_to_failed(self):
self._test_update_row_state(odl_const.PROCESSING, odl_const.FAILED)
def test_update_row_state_to_completed(self):
self._test_update_row_state(odl_const.PROCESSING, odl_const.COMPLETED)
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