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# Copyright (c) 2017, Oracle and/or its affiliates. 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.
"""Tests for MySQL Cluster (NDB) Support."""
import logging
from unittest import mock
from oslo_db import exception
from oslo_db.sqlalchemy import enginefacade
from oslo_db.sqlalchemy import engines
from oslo_db.sqlalchemy import ndb
from oslo_db.sqlalchemy import test_fixtures
from oslo_db.sqlalchemy.types import String
from oslo_db.sqlalchemy import utils
from oslo_db.tests import base as test_base
from sqlalchemy import Column
from sqlalchemy import create_engine
from sqlalchemy.dialects.mysql import TEXT
from sqlalchemy.dialects.mysql import TINYTEXT
from sqlalchemy import Integer
from sqlalchemy import MetaData
from sqlalchemy import schema
from sqlalchemy import Table
from sqlalchemy import Text
LOG = logging.getLogger(__name__)
_MOCK_CONNECTION = 'mysql+pymysql://'
_TEST_TABLE = Table("test_ndb", MetaData(),
Column('id', Integer, primary_key=True),
Column('test1', String(255, mysql_ndb_type=TEXT)),
Column('test2', String(4096, mysql_ndb_type=TEXT)),
Column('test3', String(255, mysql_ndb_length=64)),
mysql_engine='InnoDB')
class NDBMockTestBase(test_base.BaseTestCase):
def setUp(self):
super(NDBMockTestBase, self).setUp()
mock_dbapi = mock.Mock()
self.test_engine = test_engine = create_engine(
_MOCK_CONNECTION, module=mock_dbapi)
test_engine.dialect._oslodb_enable_ndb_support = True
self.addCleanup(
setattr, test_engine.dialect, "_oslodb_enable_ndb_support", False
)
ndb.init_ndb_events(test_engine)
class NDBEventTestCase(NDBMockTestBase):
def test_ndb_createtable_override(self):
test_engine = self.test_engine
self.assertRegex(
str(schema.CreateTable(_TEST_TABLE).compile(
dialect=test_engine.dialect)),
"ENGINE=NDBCLUSTER")
def test_ndb_engine_override(self):
test_engine = self.test_engine
statement = "ENGINE=InnoDB"
for fn in test_engine.dispatch.before_cursor_execute:
statement, dialect = fn(
mock.Mock(), mock.Mock(), statement, {}, mock.Mock(), False)
self.assertEqual(statement, "ENGINE=NDBCLUSTER")
def test_ndb_savepoint_override(self):
test_engine = self.test_engine
statement = "SAVEPOINT xyx"
for fn in test_engine.dispatch.before_cursor_execute:
statement, dialect = fn(
mock.Mock(), mock.Mock(), statement, {}, mock.Mock(), False)
self.assertEqual(statement,
"SET @oslo_db_ndb_savepoint_rollback_disabled = 0;")
def test_ndb_rollback_override(self):
test_engine = self.test_engine
statement = "ROLLBACK TO SAVEPOINT xyz"
for fn in test_engine.dispatch.before_cursor_execute:
statement, dialect = fn(
mock.Mock(), mock.Mock(), statement, {}, mock.Mock(), False)
self.assertEqual(statement,
"SET @oslo_db_ndb_savepoint_rollback_disabled = 0;")
def test_ndb_rollback_release_override(self):
test_engine = self.test_engine
statement = "RELEASE SAVEPOINT xyz"
for fn in test_engine.dispatch.before_cursor_execute:
statement, dialect = fn(
mock.Mock(), mock.Mock(), statement, {}, mock.Mock(), False)
self.assertEqual(statement,
"SET @oslo_db_ndb_savepoint_rollback_disabled = 0;")
class NDBDatatypesTestCase(NDBMockTestBase):
def test_ndb_string_to_tinytext(self):
test_engine = self.test_engine
self.assertEqual("TINYTEXT",
str(String(255, mysql_ndb_type=TINYTEXT).compile(
dialect=test_engine.dialect)))
def test_ndb_string_to_text(self):
test_engine = self.test_engine
self.assertEqual("TEXT",
str(String(4096, mysql_ndb_type=TEXT).compile(
dialect=test_engine.dialect)))
def test_ndb_string_length(self):
test_engine = self.test_engine
self.assertEqual('VARCHAR(64)',
str(String(255, mysql_ndb_length=64).compile(
dialect=test_engine.dialect)))
class NDBDatatypesDefaultTestCase(NDBMockTestBase):
def setUp(self):
super(NDBMockTestBase, self).setUp()
mock_dbapi = mock.Mock()
self.test_engine = create_engine(_MOCK_CONNECTION, module=mock_dbapi)
def test_non_ndb_string_to_text(self):
test_engine = self.test_engine
self.assertEqual("VARCHAR(255)",
str(String(255, mysql_ndb_type=TINYTEXT).compile(
dialect=test_engine.dialect)))
def test_non_ndb_autostringtext(self):
test_engine = self.test_engine
self.assertEqual("VARCHAR(4096)",
str(String(4096, mysql_ndb_type=TEXT).compile(
dialect=test_engine.dialect)))
def test_non_ndb_autostringsize(self):
test_engine = self.test_engine
self.assertEqual('VARCHAR(255)',
str(String(255, mysql_ndb_length=64).compile(
dialect=test_engine.dialect)))
class NDBOpportunisticTestCase(
test_fixtures.OpportunisticDBTestMixin, test_base.BaseTestCase,
):
FIXTURE = test_fixtures.MySQLOpportunisticFixture
def init_db(self, use_ndb):
# get the MySQL engine created by the opportunistic
# provisioning system
self.engine = enginefacade.writer.get_engine()
if use_ndb:
# if we want NDB, make a new local engine that uses the
# URL / database / schema etc. of the provisioned engine,
# since NDB-ness is a per-table thing
self.engine = engines.create_engine(
self.engine.url, mysql_enable_ndb=True
)
self.addCleanup(self.engine.dispose)
self.test_table = _TEST_TABLE
try:
self.test_table.create(self.engine)
except exception.DBNotSupportedError:
self.skipTest("MySQL NDB Cluster not available")
def test_ndb_enabled(self):
self.init_db(True)
self.assertTrue(ndb.ndb_status(self.engine))
self.assertIsInstance(self.test_table.c.test1.type, TINYTEXT)
self.assertIsInstance(self.test_table.c.test2.type, Text)
self.assertIsInstance(self.test_table.c.test3.type, String)
self.assertEqual(64, self.test_table.c.test3.type.length)
self.assertEqual([], utils.get_non_ndbcluster_tables(self.engine))
def test_ndb_disabled(self):
self.init_db(False)
self.assertFalse(ndb.ndb_status(self.engine))
self.assertIsInstance(self.test_table.c.test1.type, String)
self.assertEqual(255, self.test_table.c.test1.type.length)
self.assertIsInstance(self.test_table.c.test2.type, String)
self.assertEqual(4096, self.test_table.c.test2.type.length)
self.assertIsInstance(self.test_table.c.test3.type, String)
self.assertEqual(255, self.test_table.c.test3.type.length)
self.assertEqual([], utils.get_non_innodb_tables(self.engine))
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