¡@

Home 

OpenStack Study: test_migrations.py

OpenStack Index

**** CubicPower OpenStack Study ****

# Copyright 2010-2011 OpenStack Foundation

# 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 database migrations. This test case reads the configuration

file test_migrations.conf for database connection settings

to use in the tests. For each connection found in the config file,

the test case runs a series of test cases to ensure that migrations work

properly both upgrading and downgrading, and that no data loss occurs

if possible.

"""

import ConfigParser

import os

import subprocess

import uuid

from migrate.versioning import repository

import six.moves.urllib.parse as urlparse

import sqlalchemy

import testtools

import cinder.db.migration as migration

import cinder.db.sqlalchemy.migrate_repo

from cinder.db.sqlalchemy.migration import versioning_api as migration_api

from cinder.openstack.common import log as logging

from cinder import test

LOG = logging.getLogger('cinder.tests.test_migrations')

**** CubicPower OpenStack Study ****

def _get_connect_string(backend,

                        user="openstack_citest",

                        passwd="openstack_citest",

                        database="openstack_citest"):

    """Return connect string.

    Try to get a connection with a very specific set of values, if we get

    these then we'll run the tests, otherwise they are skipped.

    """

    if backend == "postgres":

        backend = "postgresql+psycopg2"

    return ("%(backend)s://%(user)s:%(passwd)s@localhost/%(database)s" %

            {'backend': backend, 'user': user, 'passwd': passwd,

             'database': database})

**** CubicPower OpenStack Study ****

def _is_mysql_avail(**kwargs):

    return _is_backend_avail('mysql', **kwargs)

**** CubicPower OpenStack Study ****

def _is_backend_avail(backend,

                      user="openstack_citest",

                      passwd="openstack_citest",

                      database="openstack_citest"):

    try:

        if backend == "mysql":

            connect_uri = _get_connect_string("mysql", user=user,

                                              passwd=passwd, database=database)

        elif backend == "postgres":

            connect_uri = _get_connect_string("postgres", user=user,

                                              passwd=passwd, database=database)

        engine = sqlalchemy.create_engine(connect_uri)

        connection = engine.connect()

    except Exception:

        # intentionally catch all to handle exceptions even if we don't

        # have any backend code loaded.

        LOG.exception("Backend %s is not available", backend)

        return False

    else:

        connection.close()

        engine.dispose()

        return True

**** CubicPower OpenStack Study ****

def _have_mysql():

    present = os.environ.get('NOVA_TEST_MYSQL_PRESENT')

    if present is None:

        return _is_backend_avail('mysql')

    return present.lower() in ('', 'true')

**** CubicPower OpenStack Study ****

def get_table(engine, name):

    """Returns an sqlalchemy table dynamically from db.

    Needed because the models don't work for us in migrations

    as models will be far out of sync with the current data.

    """

    metadata = sqlalchemy.schema.MetaData()

    metadata.bind = engine

    return sqlalchemy.Table(name, metadata, autoload=True)

**** CubicPower OpenStack Study ****

class TestMigrations(test.TestCase):

"""Test sqlalchemy-migrate migrations."""

DEFAULT_CONFIG_FILE = os.path.join(os.path.dirname(__file__),

'test_migrations.conf')

# Test machines can set the CINDER_TEST_MIGRATIONS_CONF variable

# to override the location of the config file for migration testing

CONFIG_FILE_PATH = os.environ.get('CINDER_TEST_MIGRATIONS_CONF',

DEFAULT_CONFIG_FILE)

MIGRATE_FILE = cinder.db.sqlalchemy.migrate_repo.__file__

REPOSITORY = repository.Repository(

os.path.abspath(os.path.dirname(MIGRATE_FILE)))

**** CubicPower OpenStack Study ****

    def setUp(self):

        super(TestMigrations, self).setUp()

        self.snake_walk = False

        self.test_databases = {}

        # Load test databases from the config file. Only do this

        # once. No need to re-run this on each test...

        LOG.debug('config_path is %s' % TestMigrations.CONFIG_FILE_PATH)

        if not self.test_databases:

            if os.path.exists(TestMigrations.CONFIG_FILE_PATH):

                cp = ConfigParser.RawConfigParser()

                try:

                    cp.read(TestMigrations.CONFIG_FILE_PATH)

                    defaults = cp.defaults()

                    for key, value in defaults.items():

                        self.test_databases[key] = value

                    self.snake_walk = cp.getboolean('walk_style', 'snake_walk')

                except ConfigParser.ParsingError as e:

                    self.fail("Failed to read test_migrations.conf config "

                              "file. Got error: %s" % e)

            else:

                self.fail("Failed to find test_migrations.conf config "

                          "file.")

        self.engines = {}

        for key, value in self.test_databases.items():

            self.engines[key] = sqlalchemy.create_engine(value)

        # Set-up a dict of types for those column types that

        # are not uniform for all databases.

        self.bool_type = {}

        self.time_type = {}

        for (key, engine) in self.engines.items():

            self.bool_type[engine.name] = sqlalchemy.types.BOOLEAN

            self.time_type[engine.name] = sqlalchemy.types.DATETIME

            if engine.name == 'mysql':

                self.bool_type[engine.name] = sqlalchemy.dialects.mysql.TINYINT

            if engine.name == 'postgresql':

                self.time_type[engine.name] = sqlalchemy.types.TIMESTAMP

        # We start each test case with a completely blank slate.

        self._reset_databases()

**** CubicPower OpenStack Study ****

    def tearDown(self):

        # We destroy the test data store between each test case,

        # and recreate it, which ensures that we have no side-effects

        # from the tests

        self._reset_databases()

        super(TestMigrations, self).tearDown()

**** CubicPower OpenStack Study ****

    def _reset_databases(self):

        def execute_cmd(cmd=None):

            proc = subprocess.Popen(cmd, stdout=subprocess.PIPE,

                                    stderr=subprocess.STDOUT, shell=True)

            output = proc.communicate()[0]

            LOG.debug(output)

            self.assertEqual(0, proc.returncode)

        for key, engine in self.engines.items():

            conn_string = self.test_databases[key]

            conn_pieces = urlparse.urlparse(conn_string)

            engine.dispose()

            if conn_string.startswith('sqlite'):

                # We can just delete the SQLite database, which is

                # the easiest and cleanest solution

                db_path = conn_pieces.path.strip('/')

                if os.path.exists(db_path):

                    os.unlink(db_path)

                # No need to recreate the SQLite DB. SQLite will

                # create it for us if it's not there...

            elif conn_string.startswith('mysql'):

                # We can execute the MySQL client to destroy and re-create

                # the MYSQL database, which is easier and less error-prone

                # than using SQLAlchemy to do this via MetaData...trust me.

                database = conn_pieces.path.strip('/')

                loc_pieces = conn_pieces.netloc.split('@')

                host = loc_pieces[1]

                auth_pieces = loc_pieces[0].split(':')

                user = auth_pieces[0]

                password = ""

                if len(auth_pieces) > 1:

                    if auth_pieces[1].strip():

                        password = "-p\"%s\"" % auth_pieces[1]

                sql = ("drop database if exists %(database)s; create database "

                       "%(database)s;") % {'database': database}

                cmd = ("mysql -u \"%(user)s\" %(password)s -h %(host)s "

                       "-e \"%(sql)s\"") % {'user': user, 'password': password,

                                            'host': host, 'sql': sql}

                execute_cmd(cmd)

            elif conn_string.startswith('postgresql'):

                database = conn_pieces.path.strip('/')

                loc_pieces = conn_pieces.netloc.split('@')

                host = loc_pieces[1]

                auth_pieces = loc_pieces[0].split(':')

                user = auth_pieces[0]

                password = ""

                if len(auth_pieces) > 1:

                    password = auth_pieces[1].strip()

                # note(krtaylor): File creation problems with tests in

                # venv using .pgpass authentication, changed to

                # PGPASSWORD environment variable which is no longer

                # planned to be deprecated

                os.environ['PGPASSWORD'] = password

                os.environ['PGUSER'] = user

                # note(boris-42): We must create and drop database, we can't

                # drop database which we have connected to, so for such

                # operations there is a special database template1.

                sqlcmd = ("psql -w -U %(user)s -h %(host)s -c"

                          " '%(sql)s' -d template1")

                sql = ("drop database if exists %(database)s;") % {'database':

                                                                   database}

                droptable = sqlcmd % {'user': user, 'host': host, 'sql': sql}

                execute_cmd(droptable)

                sql = ("create database %(database)s;") % {'database':

                                                           database}

                createtable = sqlcmd % {'user': user, 'host': host, 'sql': sql}

                execute_cmd(createtable)

                os.unsetenv('PGPASSWORD')

                os.unsetenv('PGUSER')

**** CubicPower OpenStack Study ****

        def execute_cmd(cmd=None):

            proc = subprocess.Popen(cmd, stdout=subprocess.PIPE,

                                    stderr=subprocess.STDOUT, shell=True)

            output = proc.communicate()[0]

            LOG.debug(output)

            self.assertEqual(0, proc.returncode)

        for key, engine in self.engines.items():

            conn_string = self.test_databases[key]

            conn_pieces = urlparse.urlparse(conn_string)

            engine.dispose()

            if conn_string.startswith('sqlite'):

                # We can just delete the SQLite database, which is

                # the easiest and cleanest solution

                db_path = conn_pieces.path.strip('/')

                if os.path.exists(db_path):

                    os.unlink(db_path)

                # No need to recreate the SQLite DB. SQLite will

                # create it for us if it's not there...

            elif conn_string.startswith('mysql'):

                # We can execute the MySQL client to destroy and re-create

                # the MYSQL database, which is easier and less error-prone

                # than using SQLAlchemy to do this via MetaData...trust me.

                database = conn_pieces.path.strip('/')

                loc_pieces = conn_pieces.netloc.split('@')

                host = loc_pieces[1]

                auth_pieces = loc_pieces[0].split(':')

                user = auth_pieces[0]

                password = ""

                if len(auth_pieces) > 1:

                    if auth_pieces[1].strip():

                        password = "-p\"%s\"" % auth_pieces[1]

                sql = ("drop database if exists %(database)s; create database "

                       "%(database)s;") % {'database': database}

                cmd = ("mysql -u \"%(user)s\" %(password)s -h %(host)s "

                       "-e \"%(sql)s\"") % {'user': user, 'password': password,

                                            'host': host, 'sql': sql}

                execute_cmd(cmd)

            elif conn_string.startswith('postgresql'):

                database = conn_pieces.path.strip('/')

                loc_pieces = conn_pieces.netloc.split('@')

                host = loc_pieces[1]

                auth_pieces = loc_pieces[0].split(':')

                user = auth_pieces[0]

                password = ""

                if len(auth_pieces) > 1:

                    password = auth_pieces[1].strip()

                # note(krtaylor): File creation problems with tests in

                # venv using .pgpass authentication, changed to

                # PGPASSWORD environment variable which is no longer

                # planned to be deprecated

                os.environ['PGPASSWORD'] = password

                os.environ['PGUSER'] = user

                # note(boris-42): We must create and drop database, we can't

                # drop database which we have connected to, so for such

                # operations there is a special database template1.

                sqlcmd = ("psql -w -U %(user)s -h %(host)s -c"

                          " '%(sql)s' -d template1")

                sql = ("drop database if exists %(database)s;") % {'database':

                                                                   database}

                droptable = sqlcmd % {'user': user, 'host': host, 'sql': sql}

                execute_cmd(droptable)

                sql = ("create database %(database)s;") % {'database':

                                                           database}

                createtable = sqlcmd % {'user': user, 'host': host, 'sql': sql}

                execute_cmd(createtable)

                os.unsetenv('PGPASSWORD')

                os.unsetenv('PGUSER')

**** CubicPower OpenStack Study ****

    def test_walk_versions(self):

        """Test walk versions.

        Walks all version scripts for each tested database, ensuring

        that there are no errors in the version scripts for each engine

        """

        for key, engine in self.engines.items():

            self._walk_versions(engine, self.snake_walk)

**** CubicPower OpenStack Study ****

    def test_mysql_connect_fail(self):

        """Test for mysql connection failure.

        Test that we can trigger a mysql connection failure and we fail

        gracefully to ensure we don't break people without mysql

        """

        if _is_mysql_avail(user="openstack_cifail"):

            self.fail("Shouldn't have connected")

    @testtools.skipUnless(_have_mysql(), "mysql not available")

**** CubicPower OpenStack Study ****

    def test_mysql_innodb(self):

        """Test that table creation on mysql only builds InnoDB tables."""

        # add this to the global lists to make reset work with it, it's removed

        # automatically in tearDown so no need to clean it up here.

        connect_string = _get_connect_string('mysql')

        engine = sqlalchemy.create_engine(connect_string)

        self.engines["mysqlcitest"] = engine

        self.test_databases["mysqlcitest"] = connect_string

        # build a fully populated mysql database with all the tables

        self._reset_databases()

        self._walk_versions(engine, False, False)

        uri = _get_connect_string('mysql', database="information_schema")

        connection = sqlalchemy.create_engine(uri).connect()

        # sanity check

        total = connection.execute("SELECT count(*) "

                                   "from information_schema.TABLES "

                                   "where TABLE_SCHEMA='openstack_citest'")

        self.assertGreater(total.scalar(), 0,

                           msg="No tables found. Wrong schema?")

        noninnodb = connection.execute("SELECT count(*) "

                                       "from information_schema.TABLES "

                                       "where TABLE_SCHEMA='openstack_citest' "

                                       "and ENGINE!='InnoDB' "

                                       "and TABLE_NAME!='migrate_version'")

        count = noninnodb.scalar()

        self.assertEqual(count, 0, "%d non InnoDB tables created" % count)

**** CubicPower OpenStack Study ****

    def test_postgresql_connect_fail(self):

        """Test connection failure on PostgrSQL.

        Test that we can trigger a postgres connection failure and we fail

        gracefully to ensure we don't break people without postgres.

        """

        if _is_backend_avail('postgres', user="openstack_cifail"):

            self.fail("Shouldn't have connected")

    @testtools.skipUnless(_is_backend_avail('postgres'),

                          "postgresql not available")

**** CubicPower OpenStack Study ****

    def test_postgresql_opportunistically(self):

        # add this to the global lists to make reset work with it, it's removed

        # automatically in tearDown so no need to clean it up here.

        connect_string = _get_connect_string("postgres")

        engine = sqlalchemy.create_engine(connect_string)

        self.engines["postgresqlcitest"] = engine

        self.test_databases["postgresqlcitest"] = connect_string

        # build a fully populated postgresql database with all the tables

        self._reset_databases()

        self._walk_versions(engine, False, False)

**** CubicPower OpenStack Study ****

    def _walk_versions(self, engine=None, snake_walk=False, downgrade=True):

        # Determine latest version script from the repo, then

        # upgrade from 1 through to the latest, with no data

        # in the databases. This just checks that the schema itself

        # upgrades successfully.

        # Place the database under version control

        migration_api.version_control(engine,

                                      TestMigrations.REPOSITORY,

                                      migration.db_initial_version())

        self.assertEqual(migration.db_initial_version(),

                         migration_api.db_version(engine,

                                                  TestMigrations.REPOSITORY))

        migration_api.upgrade(engine, TestMigrations.REPOSITORY,

                              migration.db_initial_version() + 1)

        LOG.debug('latest version is %s' % TestMigrations.REPOSITORY.latest)

        for version in xrange(migration.db_initial_version() + 2,

                              TestMigrations.REPOSITORY.latest + 1):

            # upgrade -> downgrade -> upgrade

            self._migrate_up(engine, version, with_data=True)

            if snake_walk:

                self._migrate_down(engine, version - 1)

                self._migrate_up(engine, version)

        if downgrade:

            # Now walk it back down to 0 from the latest, testing

            # the downgrade paths.

            for version in reversed(

                xrange(migration.db_initial_version() + 1,

                       TestMigrations.REPOSITORY.latest)):

                # downgrade -> upgrade -> downgrade

                self._migrate_down(engine, version)

                if snake_walk:

                    self._migrate_up(engine, version + 1)

                    self._migrate_down(engine, version)

**** CubicPower OpenStack Study ****

    def _migrate_down(self, engine, version):

        migration_api.downgrade(engine,

                                TestMigrations.REPOSITORY,

                                version)

        self.assertEqual(version,

                         migration_api.db_version(engine,

                                                  TestMigrations.REPOSITORY))

**** CubicPower OpenStack Study ****

    def _migrate_up(self, engine, version, with_data=False):

        """Migrate up to a new version of the db.

        We allow for data insertion and post checks at every

        migration version with special _prerun_### and

        _check_### functions in the main test.

        """

        # NOTE(sdague): try block is here because it's impossible to debug

        # where a failed data migration happens otherwise

        try:

            if with_data:

                data = None

                prerun = getattr(self, "_prerun_%3.3d" % version, None)

                if prerun:

                    data = prerun(engine)

            migration_api.upgrade(engine,

                                  TestMigrations.REPOSITORY,

                                  version)

            self.assertEqual(

                version,

                migration_api.db_version(engine,

                                         TestMigrations.REPOSITORY))

            if with_data:

                check = getattr(self, "_check_%3.3d" % version, None)

                if check:

                    check(engine, data)

        except Exception:

            LOG.error("Failed to migrate to version %s on engine %s" %

                      (version, engine))

            raise

    # migration 004 - change volume types to UUID

**** CubicPower OpenStack Study ****

    def _prerun_004(self, engine):

        data = {

            'volumes': [{'id': str(uuid.uuid4()), 'host': 'test1',

                         'volume_type_id': 1},

                        {'id': str(uuid.uuid4()), 'host': 'test2',

                         'volume_type_id': 1},

                        {'id': str(uuid.uuid4()), 'host': 'test3',

                         'volume_type_id': 3},

                        ],

            'volume_types': [{'name': 'vtype1'},

                             {'name': 'vtype2'},

                             {'name': 'vtype3'},

                             ],

            'volume_type_extra_specs': [{'volume_type_id': 1,

                                         'key': 'v1',

                                         'value': 'hotep',

                                         },

                                        {'volume_type_id': 1,

                                         'key': 'v2',

                                         'value': 'bending rodrigez',

                                         },

                                        {'volume_type_id': 2,

                                         'key': 'v3',

                                         'value': 'bending rodrigez',

                                         },

                                        ]}

        volume_types = get_table(engine, 'volume_types')

        for vtype in data['volume_types']:

            r = volume_types.insert().values(vtype).execute()

            vtype['id'] = r.inserted_primary_key[0]

        volume_type_es = get_table(engine, 'volume_type_extra_specs')

        for vtes in data['volume_type_extra_specs']:

            r = volume_type_es.insert().values(vtes).execute()

            vtes['id'] = r.inserted_primary_key[0]

        volumes = get_table(engine, 'volumes')

        for vol in data['volumes']:

            r = volumes.insert().values(vol).execute()

            vol['id'] = r.inserted_primary_key[0]

        return data

**** CubicPower OpenStack Study ****

    def _check_004(self, engine, data):

        volumes = get_table(engine, 'volumes')

        v1 = volumes.select(volumes.c.id ==

                            data['volumes'][0]['id']

                            ).execute().first()

        v2 = volumes.select(volumes.c.id ==

                            data['volumes'][1]['id']

                            ).execute().first()

        v3 = volumes.select(volumes.c.id ==

                            data['volumes'][2]['id']

                            ).execute().first()

        volume_types = get_table(engine, 'volume_types')

        vt1 = volume_types.select(volume_types.c.name ==

                                  data['volume_types'][0]['name']

                                  ).execute().first()

        vt2 = volume_types.select(volume_types.c.name ==

                                  data['volume_types'][1]['name']

                                  ).execute().first()

        vt3 = volume_types.select(volume_types.c.name ==

                                  data['volume_types'][2]['name']

                                  ).execute().first()

        vtes = get_table(engine, 'volume_type_extra_specs')

        vtes1 = vtes.select(vtes.c.key ==

                            data['volume_type_extra_specs'][0]['key']

                            ).execute().first()

        vtes2 = vtes.select(vtes.c.key ==

                            data['volume_type_extra_specs'][1]['key']

                            ).execute().first()

        vtes3 = vtes.select(vtes.c.key ==

                            data['volume_type_extra_specs'][2]['key']

                            ).execute().first()

        self.assertEqual(v1['volume_type_id'], vt1['id'])

        self.assertEqual(v2['volume_type_id'], vt1['id'])

        self.assertEqual(v3['volume_type_id'], vt3['id'])

        self.assertEqual(vtes1['volume_type_id'], vt1['id'])

        self.assertEqual(vtes2['volume_type_id'], vt1['id'])

        self.assertEqual(vtes3['volume_type_id'], vt2['id'])

**** CubicPower OpenStack Study ****

    def test_migration_005(self):

        """Test that adding source_volid column works correctly."""

        for (key, engine) in self.engines.items():

            migration_api.version_control(engine,

                                          TestMigrations.REPOSITORY,

                                          migration.db_initial_version())

            migration_api.upgrade(engine, TestMigrations.REPOSITORY, 4)

            metadata = sqlalchemy.schema.MetaData()

            metadata.bind = engine

            migration_api.upgrade(engine, TestMigrations.REPOSITORY, 5)

            volumes = sqlalchemy.Table('volumes',

                                       metadata,

                                       autoload=True)

            self.assertIsInstance(volumes.c.source_volid.type,

                                  sqlalchemy.types.VARCHAR)

**** CubicPower OpenStack Study ****

    def _metadatas(self, upgrade_to, downgrade_to=None):

        for (key, engine) in self.engines.items():

            migration_api.version_control(engine,

                                          TestMigrations.REPOSITORY,

                                          migration.db_initial_version())

            migration_api.upgrade(engine,

                                  TestMigrations.REPOSITORY,

                                  upgrade_to)

            if downgrade_to is not None:

                migration_api.downgrade(

                    engine, TestMigrations.REPOSITORY, downgrade_to)

            metadata = sqlalchemy.schema.MetaData()

            metadata.bind = engine

            yield metadata

**** CubicPower OpenStack Study ****

    def metadatas_upgraded_to(self, revision):

        return self._metadatas(revision)

**** CubicPower OpenStack Study ****

    def metadatas_downgraded_from(self, revision):

        return self._metadatas(revision, revision - 1)

**** CubicPower OpenStack Study ****

    def test_upgrade_006_adds_provider_location(self):

        for metadata in self.metadatas_upgraded_to(6):

            snapshots = sqlalchemy.Table('snapshots', metadata, autoload=True)

            self.assertIsInstance(snapshots.c.provider_location.type,

                                  sqlalchemy.types.VARCHAR)

**** CubicPower OpenStack Study ****

    def test_downgrade_006_removes_provider_location(self):

        for metadata in self.metadatas_downgraded_from(6):

            snapshots = sqlalchemy.Table('snapshots', metadata, autoload=True)

            self.assertNotIn('provider_location', snapshots.c)

**** CubicPower OpenStack Study ****

    def test_upgrade_007_adds_fk(self):

        for metadata in self.metadatas_upgraded_to(7):

            snapshots = sqlalchemy.Table('snapshots', metadata, autoload=True)

            volumes = sqlalchemy.Table('volumes', metadata, autoload=True)

            fkey, = snapshots.c.volume_id.foreign_keys

            self.assertEqual(volumes.c.id, fkey.column)

**** CubicPower OpenStack Study ****

    def test_downgrade_007_removes_fk(self):

        for metadata in self.metadatas_downgraded_from(7):

            snapshots = sqlalchemy.Table('snapshots', metadata, autoload=True)

            self.assertEqual(0, len(snapshots.c.volume_id.foreign_keys))

**** CubicPower OpenStack Study ****

    def test_migration_008(self):

        """Test that adding and removing the backups table works correctly."""

        for (key, engine) in self.engines.items():

            migration_api.version_control(engine,

                                          TestMigrations.REPOSITORY,

                                          migration.db_initial_version())

            migration_api.upgrade(engine, TestMigrations.REPOSITORY, 7)

            metadata = sqlalchemy.schema.MetaData()

            metadata.bind = engine

            migration_api.upgrade(engine, TestMigrations.REPOSITORY, 8)

            self.assertTrue(engine.dialect.has_table(engine.connect(),

                                                     "backups"))

            backups = sqlalchemy.Table('backups',

                                       metadata,

                                       autoload=True)

            self.assertIsInstance(backups.c.created_at.type,

                                  self.time_type[engine.name])

            self.assertIsInstance(backups.c.updated_at.type,

                                  self.time_type[engine.name])

            self.assertIsInstance(backups.c.deleted_at.type,

                                  self.time_type[engine.name])

            self.assertIsInstance(backups.c.deleted.type,

                                  self.bool_type[engine.name])

            self.assertIsInstance(backups.c.id.type,

                                  sqlalchemy.types.VARCHAR)

            self.assertIsInstance(backups.c.volume_id.type,

                                  sqlalchemy.types.VARCHAR)

            self.assertIsInstance(backups.c.user_id.type,

                                  sqlalchemy.types.VARCHAR)

            self.assertIsInstance(backups.c.project_id.type,

                                  sqlalchemy.types.VARCHAR)

            self.assertIsInstance(backups.c.host.type,

                                  sqlalchemy.types.VARCHAR)

            self.assertIsInstance(backups.c.availability_zone.type,

                                  sqlalchemy.types.VARCHAR)

            self.assertIsInstance(backups.c.display_name.type,

                                  sqlalchemy.types.VARCHAR)

            self.assertIsInstance(backups.c.display_description.type,

                                  sqlalchemy.types.VARCHAR)

            self.assertIsInstance(backups.c.container.type,

                                  sqlalchemy.types.VARCHAR)

            self.assertIsInstance(backups.c.status.type,

                                  sqlalchemy.types.VARCHAR)

            self.assertIsInstance(backups.c.fail_reason.type,

                                  sqlalchemy.types.VARCHAR)

            self.assertIsInstance(backups.c.service_metadata.type,

                                  sqlalchemy.types.VARCHAR)

            self.assertIsInstance(backups.c.service.type,

                                  sqlalchemy.types.VARCHAR)

            self.assertIsInstance(backups.c.size.type,

                                  sqlalchemy.types.INTEGER)

            self.assertIsInstance(backups.c.object_count.type,

                                  sqlalchemy.types.INTEGER)

            migration_api.downgrade(engine, TestMigrations.REPOSITORY, 7)

            self.assertFalse(engine.dialect.has_table(engine.connect(),

                                                      "backups"))

**** CubicPower OpenStack Study ****

    def test_migration_009(self):

        """Test adding snapshot_metadata table works correctly."""

        for (key, engine) in self.engines.items():

            migration_api.version_control(engine,

                                          TestMigrations.REPOSITORY,

                                          migration.db_initial_version())

            migration_api.upgrade(engine, TestMigrations.REPOSITORY, 8)

            metadata = sqlalchemy.schema.MetaData()

            metadata.bind = engine

            migration_api.upgrade(engine, TestMigrations.REPOSITORY, 9)

            self.assertTrue(engine.dialect.has_table(engine.connect(),

                                                     "snapshot_metadata"))

            snapshot_metadata = sqlalchemy.Table('snapshot_metadata',

                                                 metadata,

                                                 autoload=True)

            self.assertIsInstance(snapshot_metadata.c.created_at.type,

                                  self.time_type[engine.name])

            self.assertIsInstance(snapshot_metadata.c.updated_at.type,

                                  self.time_type[engine.name])

            self.assertIsInstance(snapshot_metadata.c.deleted_at.type,

                                  self.time_type[engine.name])

            self.assertIsInstance(snapshot_metadata.c.deleted.type,

                                  self.bool_type[engine.name])

            self.assertIsInstance(snapshot_metadata.c.deleted.type,

                                  self.bool_type[engine.name])

            self.assertIsInstance(snapshot_metadata.c.id.type,

                                  sqlalchemy.types.INTEGER)

            self.assertIsInstance(snapshot_metadata.c.snapshot_id.type,

                                  sqlalchemy.types.VARCHAR)

            self.assertIsInstance(snapshot_metadata.c.key.type,

                                  sqlalchemy.types.VARCHAR)

            self.assertIsInstance(snapshot_metadata.c.value.type,

                                  sqlalchemy.types.VARCHAR)

            migration_api.downgrade(engine, TestMigrations.REPOSITORY, 8)

            self.assertFalse(engine.dialect.has_table(engine.connect(),

                                                      "snapshot_metadata"))

**** CubicPower OpenStack Study ****

    def test_migration_010(self):

        """Test adding transfers table works correctly."""

        for (key, engine) in self.engines.items():

            migration_api.version_control(engine,

                                          TestMigrations.REPOSITORY,

                                          migration.db_initial_version())

            migration_api.upgrade(engine, TestMigrations.REPOSITORY, 9)

            metadata = sqlalchemy.schema.MetaData()

            metadata.bind = engine

            migration_api.upgrade(engine, TestMigrations.REPOSITORY, 10)

            self.assertTrue(engine.dialect.has_table(engine.connect(),

                                                     "transfers"))

            transfers = sqlalchemy.Table('transfers',

                                         metadata,

                                         autoload=True)

            self.assertIsInstance(transfers.c.created_at.type,

                                  self.time_type[engine.name])

            self.assertIsInstance(transfers.c.updated_at.type,

                                  self.time_type[engine.name])

            self.assertIsInstance(transfers.c.deleted_at.type,

                                  self.time_type[engine.name])

            self.assertIsInstance(transfers.c.deleted.type,

                                  self.bool_type[engine.name])

            self.assertIsInstance(transfers.c.id.type,

                                  sqlalchemy.types.VARCHAR)

            self.assertIsInstance(transfers.c.volume_id.type,

                                  sqlalchemy.types.VARCHAR)

            self.assertIsInstance(transfers.c.display_name.type,

                                  sqlalchemy.types.VARCHAR)

            self.assertIsInstance(transfers.c.salt.type,

                                  sqlalchemy.types.VARCHAR)

            self.assertIsInstance(transfers.c.crypt_hash.type,

                                  sqlalchemy.types.VARCHAR)

            self.assertIsInstance(transfers.c.expires_at.type,

                                  self.time_type[engine.name])

            migration_api.downgrade(engine, TestMigrations.REPOSITORY, 9)

            self.assertFalse(engine.dialect.has_table(engine.connect(),

                                                      "transfers"))

**** CubicPower OpenStack Study ****

    def test_migration_011(self):

        """Test adding transfers table works correctly."""

        for (key, engine) in self.engines.items():

            migration_api.version_control(engine,

                                          TestMigrations.REPOSITORY,

                                          migration.db_initial_version())

            migration_api.upgrade(engine, TestMigrations.REPOSITORY, 10)

            metadata = sqlalchemy.schema.MetaData()

            metadata.bind = engine

            volumes_v10 = sqlalchemy.Table('volumes',

                                           metadata,

                                           autoload=True)

            migration_api.upgrade(engine, TestMigrations.REPOSITORY, 11)

            metadata = sqlalchemy.schema.MetaData()

            metadata.bind = engine

            self.assertTrue(engine.dialect.has_table(engine.connect(),

                                                     "volumes"))

            volumes = sqlalchemy.Table('volumes',

                                       metadata,

                                       autoload=True)

            # Make sure we didn't miss any columns in the upgrade

            for column in volumes_v10.c:

                self.assertTrue(volumes.c.__contains__(column.name))

            self.assertIsInstance(volumes.c.bootable.type,

                                  self.bool_type[engine.name])

            migration_api.downgrade(engine, TestMigrations.REPOSITORY, 10)

            metadata = sqlalchemy.schema.MetaData()

            metadata.bind = engine

            volumes = sqlalchemy.Table('volumes',

                                       metadata,

                                       autoload=True)

            self.assertNotIn('bootable', volumes.c)

            # Make sure we put all the columns back

            for column in volumes_v10.c:

                self.assertTrue(volumes.c.__contains__(column.name))

**** CubicPower OpenStack Study ****

    def test_migration_012(self):

        """Test that adding attached_host column works correctly."""

        for (key, engine) in self.engines.items():

            migration_api.version_control(engine,

                                          TestMigrations.REPOSITORY,

                                          migration.db_initial_version())

            migration_api.upgrade(engine, TestMigrations.REPOSITORY, 11)

            metadata = sqlalchemy.schema.MetaData()

            metadata.bind = engine

            migration_api.upgrade(engine, TestMigrations.REPOSITORY, 12)

            volumes = sqlalchemy.Table('volumes',

                                       metadata,

                                       autoload=True)

            self.assertIsInstance(volumes.c.attached_host.type,

                                  sqlalchemy.types.VARCHAR)

            migration_api.downgrade(engine, TestMigrations.REPOSITORY, 11)

            metadata = sqlalchemy.schema.MetaData()

            metadata.bind = engine

            volumes = sqlalchemy.Table('volumes',

                                       metadata,

                                       autoload=True)

            self.assertNotIn('attached_host', volumes.c)

**** CubicPower OpenStack Study ****

    def test_migration_013(self):

        """Test that adding provider_geometry column works correctly."""

        for (key, engine) in self.engines.items():

            migration_api.version_control(engine,

                                          TestMigrations.REPOSITORY,

                                          migration.db_initial_version())

            migration_api.upgrade(engine, TestMigrations.REPOSITORY, 12)

            metadata = sqlalchemy.schema.MetaData()

            metadata.bind = engine

            migration_api.upgrade(engine, TestMigrations.REPOSITORY, 13)

            volumes = sqlalchemy.Table('volumes',

                                       metadata,

                                       autoload=True)

            self.assertIsInstance(volumes.c.provider_geometry.type,

                                  sqlalchemy.types.VARCHAR)

            migration_api.downgrade(engine, TestMigrations.REPOSITORY, 12)

            metadata = sqlalchemy.schema.MetaData()

            metadata.bind = engine

            volumes = sqlalchemy.Table('volumes',

                                       metadata,

                                       autoload=True)

            self.assertNotIn('provider_geometry', volumes.c)

**** CubicPower OpenStack Study ****

    def test_migration_014(self):

        """Test that adding _name_id column works correctly."""

        for (key, engine) in self.engines.items():

            migration_api.version_control(engine,

                                          TestMigrations.REPOSITORY,

                                          migration.db_initial_version())

            migration_api.upgrade(engine, TestMigrations.REPOSITORY, 13)

            metadata = sqlalchemy.schema.MetaData()

            metadata.bind = engine

            migration_api.upgrade(engine, TestMigrations.REPOSITORY, 14)

            volumes = sqlalchemy.Table('volumes',

                                       metadata,

                                       autoload=True)

            self.assertIsInstance(volumes.c._name_id.type,

                                  sqlalchemy.types.VARCHAR)

            migration_api.downgrade(engine, TestMigrations.REPOSITORY, 13)

            metadata = sqlalchemy.schema.MetaData()

            metadata.bind = engine

            volumes = sqlalchemy.Table('volumes',

                                       metadata,

                                       autoload=True)

            self.assertNotIn('_name_id', volumes.c)

**** CubicPower OpenStack Study ****

    def test_migration_015(self):

        """Test removing migrations table works correctly."""

        for (key, engine) in self.engines.items():

            migration_api.version_control(engine,

                                          TestMigrations.REPOSITORY,

                                          migration.db_initial_version())

            migration_api.upgrade(engine, TestMigrations.REPOSITORY, 15)

            self.assertFalse(engine.dialect.has_table(engine.connect(),

                                                      "migrations"))

            migration_api.downgrade(engine, TestMigrations.REPOSITORY, 14)

            self.assertTrue(engine.dialect.has_table(engine.connect(),

                                                     "migrations"))

**** CubicPower OpenStack Study ****

    def test_migration_016(self):

        """Test that dropping xen storage manager tables works correctly."""

        for (key, engine) in self.engines.items():

            migration_api.version_control(engine,

                                          TestMigrations.REPOSITORY,

                                          migration.db_initial_version())

            migration_api.upgrade(engine, TestMigrations.REPOSITORY, 15)

            metadata = sqlalchemy.schema.MetaData()

            metadata.bind = engine

            migration_api.upgrade(engine, TestMigrations.REPOSITORY, 16)

            self.assertFalse(engine.dialect.has_table(engine.connect(),

                                                      'sm_flavors'))

            self.assertFalse(engine.dialect.has_table(engine.connect(),

                                                      'sm_backend_config'))

            self.assertFalse(engine.dialect.has_table(engine.connect(),

                                                      'sm_volume'))

            migration_api.downgrade(engine, TestMigrations.REPOSITORY, 15)

            self.assertTrue(engine.dialect.has_table(engine.connect(),

                                                     'sm_flavors'))

            self.assertTrue(engine.dialect.has_table(engine.connect(),

                                                     'sm_backend_config'))

            self.assertTrue(engine.dialect.has_table(engine.connect(),

                                                     'sm_volume'))

**** CubicPower OpenStack Study ****

    def test_migration_017(self):

        """Test that added encryption information works correctly."""

            # upgrade schema

        for (key, engine) in self.engines.items():

            migration_api.version_control(engine,

                                          TestMigrations.REPOSITORY,

                                          migration.db_initial_version())

            migration_api.upgrade(engine, TestMigrations.REPOSITORY, 16)

            metadata = sqlalchemy.schema.MetaData()

            metadata.bind = engine

            migration_api.upgrade(engine, TestMigrations.REPOSITORY, 17)

            # encryption key UUID

            volumes = sqlalchemy.Table('volumes', metadata, autoload=True)

            self.assertIn('encryption_key_id', volumes.c)

            self.assertIsInstance(volumes.c.encryption_key_id.type,

                                  sqlalchemy.types.VARCHAR)

            snapshots = sqlalchemy.Table('snapshots', metadata, autoload=True)

            self.assertIn('encryption_key_id', snapshots.c)

            self.assertIsInstance(snapshots.c.encryption_key_id.type,

                                  sqlalchemy.types.VARCHAR)

            self.assertIn('volume_type_id', snapshots.c)

            self.assertIsInstance(snapshots.c.volume_type_id.type,

                                  sqlalchemy.types.VARCHAR)

            # encryption types table

            encryption = sqlalchemy.Table('encryption',

                                          metadata,

                                          autoload=True)

            self.assertIsInstance(encryption.c.volume_type_id.type,

                                  sqlalchemy.types.VARCHAR)

            self.assertIsInstance(encryption.c.cipher.type,

                                  sqlalchemy.types.VARCHAR)

            self.assertIsInstance(encryption.c.key_size.type,

                                  sqlalchemy.types.INTEGER)

            self.assertIsInstance(encryption.c.provider.type,

                                  sqlalchemy.types.VARCHAR)

            # downgrade schema

            migration_api.downgrade(engine, TestMigrations.REPOSITORY, 16)

            metadata = sqlalchemy.schema.MetaData()

            metadata.bind = engine

            volumes = sqlalchemy.Table('volumes', metadata, autoload=True)

            self.assertNotIn('encryption_key_id', volumes.c)

            snapshots = sqlalchemy.Table('snapshots', metadata, autoload=True)

            self.assertNotIn('encryption_key_id', snapshots.c)

            self.assertFalse(engine.dialect.has_table(engine.connect(),

                                                      'encryption'))

**** CubicPower OpenStack Study ****

    def test_migration_018(self):

        """Test that added qos_specs table works correctly."""

        for (key, engine) in self.engines.items():

            migration_api.version_control(engine,

                                          TestMigrations.REPOSITORY,

                                          migration.db_initial_version())

            migration_api.upgrade(engine, TestMigrations.REPOSITORY, 17)

            metadata = sqlalchemy.schema.MetaData()

            metadata.bind = engine

            migration_api.upgrade(engine, TestMigrations.REPOSITORY, 18)

            self.assertTrue(engine.dialect.has_table(

                engine.connect(), "quality_of_service_specs"))

            qos_specs = sqlalchemy.Table('quality_of_service_specs',

                                         metadata,

                                         autoload=True)

            self.assertIsInstance(qos_specs.c.created_at.type,

                                  self.time_type[engine.name])

            self.assertIsInstance(qos_specs.c.updated_at.type,

                                  self.time_type[engine.name])

            self.assertIsInstance(qos_specs.c.deleted_at.type,

                                  self.time_type[engine.name])

            self.assertIsInstance(qos_specs.c.deleted.type,

                                  self.bool_type[engine.name])

            self.assertIsInstance(qos_specs.c.id.type,

                                  sqlalchemy.types.VARCHAR)

            self.assertIsInstance(qos_specs.c.specs_id.type,

                                  sqlalchemy.types.VARCHAR)

            self.assertIsInstance(qos_specs.c.key.type,

                                  sqlalchemy.types.VARCHAR)

            self.assertIsInstance(qos_specs.c.value.type,

                                  sqlalchemy.types.VARCHAR)

            migration_api.downgrade(engine, TestMigrations.REPOSITORY, 17)

            self.assertFalse(engine.dialect.has_table(

                engine.connect(), "quality_of_service_specs"))

**** CubicPower OpenStack Study ****

    def test_migration_019(self):

        """Test that adding migration_status column works correctly."""

        for (key, engine) in self.engines.items():

            migration_api.version_control(engine,

                                          TestMigrations.REPOSITORY,

                                          migration.db_initial_version())

            migration_api.upgrade(engine, TestMigrations.REPOSITORY, 18)

            metadata = sqlalchemy.schema.MetaData()

            metadata.bind = engine

            migration_api.upgrade(engine, TestMigrations.REPOSITORY, 19)

            volumes = sqlalchemy.Table('volumes',

                                       metadata,

                                       autoload=True)

            self.assertIsInstance(volumes.c.migration_status.type,

                                  sqlalchemy.types.VARCHAR)

            migration_api.downgrade(engine, TestMigrations.REPOSITORY, 18)

            metadata = sqlalchemy.schema.MetaData()

            metadata.bind = engine

            volumes = sqlalchemy.Table('volumes',

                                       metadata,

                                       autoload=True)

            self.assertNotIn('migration_status', volumes.c)

**** CubicPower OpenStack Study ****

    def test_migration_020(self):

        """Test adding volume_admin_metadata table works correctly."""

        for (key, engine) in self.engines.items():

            migration_api.version_control(engine,

                                          TestMigrations.REPOSITORY,

                                          migration.db_initial_version())

            migration_api.upgrade(engine, TestMigrations.REPOSITORY, 19)

            metadata = sqlalchemy.schema.MetaData()

            metadata.bind = engine

            migration_api.upgrade(engine, TestMigrations.REPOSITORY, 20)

            self.assertTrue(engine.dialect.has_table(engine.connect(),

                                                     "volume_admin_metadata"))

            volume_admin_metadata = sqlalchemy.Table('volume_admin_metadata',

                                                     metadata,

                                                     autoload=True)

            self.assertIsInstance(volume_admin_metadata.c.created_at.type,

                                  self.time_type[engine.name])

            self.assertIsInstance(volume_admin_metadata.c.updated_at.type,

                                  self.time_type[engine.name])

            self.assertIsInstance(volume_admin_metadata.c.deleted_at.type,

                                  self.time_type[engine.name])

            self.assertIsInstance(volume_admin_metadata.c.deleted.type,

                                  self.bool_type[engine.name])

            self.assertIsInstance(volume_admin_metadata.c.id.type,

                                  sqlalchemy.types.INTEGER)

            self.assertIsInstance(volume_admin_metadata.c.volume_id.type,

                                  sqlalchemy.types.VARCHAR)

            self.assertIsInstance(volume_admin_metadata.c.key.type,

                                  sqlalchemy.types.VARCHAR)

            self.assertIsInstance(volume_admin_metadata.c.value.type,

                                  sqlalchemy.types.VARCHAR)

            migration_api.downgrade(engine, TestMigrations.REPOSITORY, 19)

            self.assertFalse(engine.dialect.has_table(engine.connect(),

                                                      "volume_admin_metadata"))

**** CubicPower OpenStack Study ****

    def test_migration_021(self):

        """Test adding default data for quota classes works correctly."""

        for (key, engine) in self.engines.items():

            migration_api.version_control(engine,

                                          TestMigrations.REPOSITORY,

                                          migration.db_initial_version())

            migration_api.upgrade(engine, TestMigrations.REPOSITORY, 20)

            metadata = sqlalchemy.schema.MetaData()

            metadata.bind = engine

            migration_api.upgrade(engine, TestMigrations.REPOSITORY, 21)

            quota_class_metadata = sqlalchemy.Table('quota_classes',

                                                    metadata,

                                                    autoload=True)

            num_defaults = quota_class_metadata.count().\

                where(quota_class_metadata.c.class_name == 'default').\

                execute().scalar()

            self.assertEqual(3, num_defaults)

            migration_api.downgrade(engine, TestMigrations.REPOSITORY, 20)

            # Defaults should not be deleted during downgrade

            num_defaults = quota_class_metadata.count().\

                where(quota_class_metadata.c.class_name == 'default').\

                execute().scalar()

            self.assertEqual(3, num_defaults)

**** CubicPower OpenStack Study ****

    def test_migration_022(self):

        """Test that adding disabled_reason column works correctly."""

        for (key, engine) in self.engines.items():

            migration_api.version_control(engine,

                                          TestMigrations.REPOSITORY,

                                          migration.db_initial_version())

            migration_api.upgrade(engine, TestMigrations.REPOSITORY, 21)

            metadata = sqlalchemy.schema.MetaData()

            metadata.bind = engine

            migration_api.upgrade(engine, TestMigrations.REPOSITORY, 22)

            services = sqlalchemy.Table('services',

                                        metadata,

                                        autoload=True)

            self.assertIsInstance(services.c.disabled_reason.type,

                                  sqlalchemy.types.VARCHAR)

            migration_api.downgrade(engine, TestMigrations.REPOSITORY, 21)

            metadata = sqlalchemy.schema.MetaData()

            metadata.bind = engine

            services = sqlalchemy.Table('services',

                                        metadata,

                                        autoload=True)

            self.assertNotIn('disabled_reason', services.c)