561 lines
24 KiB
Python
561 lines
24 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2010-2011 OpenStack, LLC
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""
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Tests for database migrations. This test case reads the configuration
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file test_migrations.conf for database connection settings
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to use in the tests. For each connection found in the config file,
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the test case runs a series of test cases to ensure that migrations work
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properly both upgrading and downgrading, and that no data loss occurs
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if possible.
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"""
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import commands
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import ConfigParser
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import os
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import urlparse
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from migrate.versioning import repository
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import sqlalchemy
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import nova.db.migration as migration
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import nova.db.sqlalchemy.migrate_repo
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from nova.db.sqlalchemy.migration import versioning_api as migration_api
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from nova.openstack.common import log as logging
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from nova import test
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LOG = logging.getLogger(__name__)
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def _get_connect_string(backend,
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user="openstack_citest",
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passwd="openstack_citest",
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database="openstack_citest"):
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"""
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Try to get a connection with a very specific set of values, if we get
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these then we'll run the tests, otherwise they are skipped
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"""
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if backend == "postgres":
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backend = "postgresql+psycopg2"
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return ("%(backend)s://%(user)s:%(passwd)s@localhost/%(database)s"
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% locals())
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def _is_backend_avail(backend,
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user="openstack_citest",
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passwd="openstack_citest",
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database="openstack_citest"):
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try:
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if backend == "mysql":
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connect_uri = _get_connect_string("mysql",
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user=user, passwd=passwd, database=database)
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elif backend == "postgres":
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connect_uri = _get_connect_string("postgres",
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user=user, passwd=passwd, database=database)
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engine = sqlalchemy.create_engine(connect_uri)
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connection = engine.connect()
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except Exception:
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# intentionally catch all to handle exceptions even if we don't
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# have any backend code loaded.
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return False
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else:
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connection.close()
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engine.dispose()
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return True
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def _have_mysql():
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present = os.environ.get('NOVA_TEST_MYSQL_PRESENT')
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if present is None:
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return _is_backend_avail('mysql')
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return present.lower() in ('', 'true')
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class TestMigrations(test.TestCase):
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"""Test sqlalchemy-migrate migrations."""
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DEFAULT_CONFIG_FILE = os.path.join(os.path.dirname(__file__),
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'test_migrations.conf')
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# Test machines can set the NOVA_TEST_MIGRATIONS_CONF variable
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# to override the location of the config file for migration testing
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CONFIG_FILE_PATH = os.environ.get('NOVA_TEST_MIGRATIONS_CONF',
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DEFAULT_CONFIG_FILE)
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MIGRATE_FILE = nova.db.sqlalchemy.migrate_repo.__file__
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REPOSITORY = repository.Repository(
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os.path.abspath(os.path.dirname(MIGRATE_FILE)))
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def setUp(self):
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super(TestMigrations, self).setUp()
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self.snake_walk = False
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self.test_databases = {}
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# Load test databases from the config file. Only do this
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# once. No need to re-run this on each test...
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LOG.debug('config_path is %s' % TestMigrations.CONFIG_FILE_PATH)
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if os.path.exists(TestMigrations.CONFIG_FILE_PATH):
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cp = ConfigParser.RawConfigParser()
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try:
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cp.read(TestMigrations.CONFIG_FILE_PATH)
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defaults = cp.defaults()
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for key, value in defaults.items():
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self.test_databases[key] = value
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self.snake_walk = cp.getboolean('walk_style', 'snake_walk')
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except ConfigParser.ParsingError, e:
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self.fail("Failed to read test_migrations.conf config "
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"file. Got error: %s" % e)
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else:
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self.fail("Failed to find test_migrations.conf config "
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"file.")
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self.engines = {}
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for key, value in self.test_databases.items():
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self.engines[key] = sqlalchemy.create_engine(value)
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# We start each test case with a completely blank slate.
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self._reset_databases()
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def tearDown(self):
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# We destroy the test data store between each test case,
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# and recreate it, which ensures that we have no side-effects
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# from the tests
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self._reset_databases()
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super(TestMigrations, self).tearDown()
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def _reset_databases(self):
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def execute_cmd(cmd=None):
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status, output = commands.getstatusoutput(cmd)
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LOG.debug(output)
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self.assertEqual(0, status)
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for key, engine in self.engines.items():
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conn_string = self.test_databases[key]
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conn_pieces = urlparse.urlparse(conn_string)
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engine.dispose()
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if conn_string.startswith('sqlite'):
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# We can just delete the SQLite database, which is
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# the easiest and cleanest solution
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db_path = conn_pieces.path.strip('/')
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if os.path.exists(db_path):
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os.unlink(db_path)
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# No need to recreate the SQLite DB. SQLite will
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# create it for us if it's not there...
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elif conn_string.startswith('mysql'):
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# We can execute the MySQL client to destroy and re-create
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# the MYSQL database, which is easier and less error-prone
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# than using SQLAlchemy to do this via MetaData...trust me.
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database = conn_pieces.path.strip('/')
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loc_pieces = conn_pieces.netloc.split('@')
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host = loc_pieces[1]
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auth_pieces = loc_pieces[0].split(':')
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user = auth_pieces[0]
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password = ""
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if len(auth_pieces) > 1:
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if auth_pieces[1].strip():
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password = "-p\"%s\"" % auth_pieces[1]
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sql = ("drop database if exists %(database)s; "
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"create database %(database)s;") % locals()
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cmd = ("mysql -u \"%(user)s\" %(password)s -h %(host)s "
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"-e \"%(sql)s\"") % locals()
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execute_cmd(cmd)
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elif conn_string.startswith('postgresql'):
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database = conn_pieces.path.strip('/')
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loc_pieces = conn_pieces.netloc.split('@')
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host = loc_pieces[1]
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auth_pieces = loc_pieces[0].split(':')
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user = auth_pieces[0]
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password = ""
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if len(auth_pieces) > 1:
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password = auth_pieces[1].strip()
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# note(boris-42): This file is used for authentication
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# without password prompt.
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createpgpass = ("echo '*:*:*:%(user)s:%(password)s' > "
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"~/.pgpass && chmod 0600 ~/.pgpass" % locals())
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execute_cmd(createpgpass)
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# note(boris-42): We must create and drop database, we can't
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# drop database which we have connected to, so for such
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# operations there is a special database template1.
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sqlcmd = ("psql -w -U %(user)s -h %(host)s -c"
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" '%(sql)s' -d template1")
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sql = ("drop database if exists %(database)s;") % locals()
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droptable = sqlcmd % locals()
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execute_cmd(droptable)
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sql = ("create database %(database)s;") % locals()
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createtable = sqlcmd % locals()
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execute_cmd(createtable)
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def test_walk_versions(self):
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"""
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Walks all version scripts for each tested database, ensuring
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that there are no errors in the version scripts for each engine
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"""
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for key, engine in self.engines.items():
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self._walk_versions(engine, self.snake_walk)
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def test_mysql_connect_fail(self):
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"""
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Test that we can trigger a mysql connection failure and we fail
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gracefully to ensure we don't break people without mysql
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"""
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if _is_backend_avail('mysql', user="openstack_cifail"):
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self.fail("Shouldn't have connected")
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def test_mysql_opportunistically(self):
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# Test that table creation on mysql only builds InnoDB tables
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if not _is_backend_avail('mysql'):
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self.skipTest("mysql not available")
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# add this to the global lists to make reset work with it, it's removed
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# automatically in tearDown so no need to clean it up here.
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connect_string = _get_connect_string("mysql")
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engine = sqlalchemy.create_engine(connect_string)
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self.engines["mysqlcitest"] = engine
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self.test_databases["mysqlcitest"] = connect_string
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# Test that we end in an innodb
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self._check_mysql_innodb(engine)
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# Test IP transition
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self._check_mysql_migration_149(engine)
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def _check_mysql_innodb(self, engine):
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# build a fully populated mysql database with all the tables
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self._reset_databases()
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self._walk_versions(engine, False, False)
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uri = _get_connect_string("mysql", database="information_schema")
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connection = sqlalchemy.create_engine(uri).connect()
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# sanity check
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total = connection.execute("SELECT count(*) "
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"from information_schema.TABLES "
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"where TABLE_SCHEMA='openstack_citest'")
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self.assertTrue(total.scalar() > 0, "No tables found. Wrong schema?")
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noninnodb = connection.execute("SELECT count(*) "
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"from information_schema.TABLES "
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"where TABLE_SCHEMA='openstack_citest' "
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"and ENGINE!='InnoDB' "
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"and TABLE_NAME!='migrate_version'")
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count = noninnodb.scalar()
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self.assertEqual(count, 0, "%d non InnoDB tables created" % count)
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def test_migration_149_postgres(self):
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"""Test updating a table with IPAddress columns."""
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if not _is_backend_avail('postgres'):
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self.skipTest("postgres not available")
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connect_string = _get_connect_string("postgres")
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engine = sqlalchemy.create_engine(connect_string)
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self.engines["postgrescitest"] = engine
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self.test_databases["postgrescitest"] = connect_string
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self._reset_databases()
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migration_api.version_control(engine, TestMigrations.REPOSITORY,
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migration.INIT_VERSION)
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connection = engine.connect()
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self._migrate_up(engine, 148)
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IPS = ("127.0.0.1", "255.255.255.255", "2001:db8::1:2", "::1")
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connection.execute("INSERT INTO provider_fw_rules "
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" (protocol, from_port, to_port, cidr)"
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"VALUES ('tcp', 1234, 1234, '%s'), "
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" ('tcp', 1234, 1234, '%s'), "
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" ('tcp', 1234, 1234, '%s'), "
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" ('tcp', 1234, 1234, '%s')" % IPS)
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self.assertEqual('character varying',
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connection.execute(
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"SELECT data_type FROM INFORMATION_SCHEMA.COLUMNS "
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"WHERE table_name='provider_fw_rules' "
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"AND table_catalog='openstack_citest' "
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"AND column_name='cidr'").scalar())
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self._migrate_up(engine, 149)
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self.assertEqual(IPS,
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tuple(tup[0] for tup in connection.execute(
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"SELECT cidr from provider_fw_rules").fetchall()))
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self.assertEqual('inet',
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connection.execute(
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"SELECT data_type FROM INFORMATION_SCHEMA.COLUMNS "
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"WHERE table_name='provider_fw_rules' "
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"AND table_catalog='openstack_citest' "
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"AND column_name='cidr'").scalar())
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connection.close()
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def _check_mysql_migration_149(self, engine):
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"""Test updating a table with IPAddress columns."""
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self._reset_databases()
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migration_api.version_control(engine, TestMigrations.REPOSITORY,
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migration.INIT_VERSION)
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uri = _get_connect_string("mysql", database="openstack_citest")
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connection = sqlalchemy.create_engine(uri).connect()
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self._migrate_up(engine, 148)
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IPS = ("127.0.0.1", "255.255.255.255", "2001:db8::1:2", "::1")
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connection.execute("INSERT INTO provider_fw_rules "
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" (protocol, from_port, to_port, cidr)"
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"VALUES ('tcp', 1234, 1234, '%s'), "
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" ('tcp', 1234, 1234, '%s'), "
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" ('tcp', 1234, 1234, '%s'), "
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" ('tcp', 1234, 1234, '%s')" % IPS)
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self.assertEqual('varchar(255)',
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connection.execute(
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"SELECT column_type FROM INFORMATION_SCHEMA.COLUMNS "
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"WHERE table_name='provider_fw_rules' "
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"AND table_schema='openstack_citest' "
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"AND column_name='cidr'").scalar())
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connection.close()
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self._migrate_up(engine, 149)
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connection = sqlalchemy.create_engine(uri).connect()
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self.assertEqual(IPS,
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tuple(tup[0] for tup in connection.execute(
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"SELECT cidr from provider_fw_rules").fetchall()))
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self.assertEqual('varchar(39)',
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connection.execute(
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"SELECT column_type FROM INFORMATION_SCHEMA.COLUMNS "
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"WHERE table_name='provider_fw_rules' "
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"AND table_schema='openstack_citest' "
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"AND column_name='cidr'").scalar())
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def _walk_versions(self, engine=None, snake_walk=False, downgrade=True):
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# Determine latest version script from the repo, then
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# upgrade from 1 through to the latest, with no data
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# in the databases. This just checks that the schema itself
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# upgrades successfully.
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# Place the database under version control
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migration_api.version_control(engine, TestMigrations.REPOSITORY,
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migration.INIT_VERSION)
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self.assertEqual(migration.INIT_VERSION,
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migration_api.db_version(engine,
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TestMigrations.REPOSITORY))
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migration_api.upgrade(engine, TestMigrations.REPOSITORY,
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migration.INIT_VERSION + 1)
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LOG.debug('latest version is %s' % TestMigrations.REPOSITORY.latest)
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for version in xrange(migration.INIT_VERSION + 2,
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TestMigrations.REPOSITORY.latest + 1):
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# upgrade -> downgrade -> upgrade
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self._migrate_up(engine, version)
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if snake_walk:
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self._migrate_down(engine, version)
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self._migrate_up(engine, version)
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if downgrade:
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# Now walk it back down to 0 from the latest, testing
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# the downgrade paths.
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for version in reversed(
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xrange(migration.INIT_VERSION + 2,
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TestMigrations.REPOSITORY.latest + 1)):
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# downgrade -> upgrade -> downgrade
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self._migrate_down(engine, version)
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if snake_walk:
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self._migrate_up(engine, version)
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self._migrate_down(engine, version)
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def _migrate_down(self, engine, version):
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migration_api.downgrade(engine,
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TestMigrations.REPOSITORY,
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version)
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self.assertEqual(version,
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migration_api.db_version(engine,
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TestMigrations.REPOSITORY))
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def _migrate_up(self, engine, version):
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migration_api.upgrade(engine,
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TestMigrations.REPOSITORY,
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version)
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self.assertEqual(version,
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migration_api.db_version(engine,
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TestMigrations.REPOSITORY))
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def test_migration_146(self):
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name = 'name'
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az = 'custom_az'
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def _145_check():
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agg = aggregates.select(aggregates.c.id == 1).execute().first()
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self.assertEqual(name, agg.name)
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self.assertEqual(az, agg.availability_zone)
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for key, engine in self.engines.items():
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migration_api.version_control(engine, TestMigrations.REPOSITORY,
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migration.INIT_VERSION)
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migration_api.upgrade(engine, TestMigrations.REPOSITORY, 145)
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metadata = sqlalchemy.schema.MetaData()
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metadata.bind = engine
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aggregates = sqlalchemy.Table('aggregates', metadata,
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autoload=True)
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aggregates.insert().values(id=1, availability_zone=az,
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aggregate_name=1, name=name).execute()
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_145_check()
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migration_api.upgrade(engine, TestMigrations.REPOSITORY, 146)
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aggregate_metadata = sqlalchemy.Table('aggregate_metadata',
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metadata, autoload=True)
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metadata = aggregate_metadata.select(aggregate_metadata.c.
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aggregate_id == 1).execute().first()
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self.assertEqual(az, metadata['value'])
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migration_api.downgrade(engine, TestMigrations.REPOSITORY, 145)
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_145_check()
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def test_migration_147(self):
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az = 'test_zone'
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host1 = 'compute-host1'
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host2 = 'compute-host2'
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def _146_check():
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service = services.select(services.c.id == 1).execute().first()
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self.assertEqual(az, service.availability_zone)
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self.assertEqual(host1, service.host)
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service = services.select(services.c.id == 2).execute().first()
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self.assertNotEqual(az, service.availability_zone)
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service = services.select(services.c.id == 3).execute().first()
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self.assertEqual(az, service.availability_zone)
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self.assertEqual(host2, service.host)
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for key, engine in self.engines.items():
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migration_api.version_control(engine, TestMigrations.REPOSITORY,
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migration.INIT_VERSION)
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migration_api.upgrade(engine, TestMigrations.REPOSITORY, 146)
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metadata = sqlalchemy.schema.MetaData()
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metadata.bind = engine
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#populate service table
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services = sqlalchemy.Table('services', metadata,
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autoload=True)
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services.insert().values(id=1, host=host1,
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binary='nova-compute', topic='compute', report_count=0,
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availability_zone=az).execute()
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services.insert().values(id=2, host='sched-host',
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binary='nova-scheduler', topic='scheduler', report_count=0,
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availability_zone='ignore_me').execute()
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services.insert().values(id=3, host=host2,
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binary='nova-compute', topic='compute', report_count=0,
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availability_zone=az).execute()
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_146_check()
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migration_api.upgrade(engine, TestMigrations.REPOSITORY, 147)
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# check aggregate metadata
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aggregate_metadata = sqlalchemy.Table('aggregate_metadata',
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metadata, autoload=True)
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aggregate_hosts = sqlalchemy.Table('aggregate_hosts',
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metadata, autoload=True)
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metadata = aggregate_metadata.select(aggregate_metadata.c.
|
|
aggregate_id == 1).execute().first()
|
|
self.assertEqual(az, metadata['value'])
|
|
self.assertEqual(aggregate_hosts.select(
|
|
aggregate_hosts.c.aggregate_id == 1).execute().
|
|
first().host, host1)
|
|
blank = [h for h in aggregate_hosts.select(
|
|
aggregate_hosts.c.aggregate_id == 2).execute()]
|
|
self.assertEqual(blank, [])
|
|
|
|
migration_api.downgrade(engine, TestMigrations.REPOSITORY, 146)
|
|
|
|
_146_check()
|
|
|
|
def test_migration_152(self):
|
|
host1 = 'compute-host1'
|
|
host2 = 'compute-host2'
|
|
|
|
def _151_check(services, volumes):
|
|
service = services.select(services.c.id == 1).execute().first()
|
|
self.assertEqual(False, service.deleted)
|
|
service = services.select(services.c.id == 2).execute().first()
|
|
self.assertEqual(True, service.deleted)
|
|
|
|
volume = volumes.select(volumes.c.id == "first").execute().first()
|
|
self.assertEqual(False, volume.deleted)
|
|
volume = volumes.select(volumes.c.id == "second").execute().first()
|
|
self.assertEqual(True, volume.deleted)
|
|
|
|
for key, engine in self.engines.items():
|
|
migration_api.version_control(engine, TestMigrations.REPOSITORY,
|
|
migration.INIT_VERSION)
|
|
migration_api.upgrade(engine, TestMigrations.REPOSITORY, 151)
|
|
metadata = sqlalchemy.schema.MetaData()
|
|
metadata.bind = engine
|
|
|
|
# NOTE(boris-42): It is enough to test one table with type of `id`
|
|
# column Integer and one with type String.
|
|
services = sqlalchemy.Table('services', metadata, autoload=True)
|
|
volumes = sqlalchemy.Table('volumes', metadata, autoload=True)
|
|
|
|
engine.execute(
|
|
services.insert(),
|
|
[
|
|
{'id': 1, 'host': host1, 'binary': 'nova-compute',
|
|
'report_count': 0, 'topic': 'compute', 'deleted': False},
|
|
{'id': 2, 'host': host1, 'binary': 'nova-compute',
|
|
'report_count': 0, 'topic': 'compute', 'deleted': True}
|
|
]
|
|
)
|
|
|
|
engine.execute(
|
|
volumes.insert(),
|
|
[
|
|
{'id': 'first', 'host': host1, 'deleted': False},
|
|
{'id': 'second', 'host': host2, 'deleted': True}
|
|
]
|
|
)
|
|
|
|
_151_check(services, volumes)
|
|
|
|
migration_api.upgrade(engine, TestMigrations.REPOSITORY, 152)
|
|
# NOTE(boris-42): One more time get from DB info about tables.
|
|
metadata2 = sqlalchemy.schema.MetaData()
|
|
metadata2.bind = engine
|
|
|
|
services = sqlalchemy.Table('services', metadata2, autoload=True)
|
|
|
|
service = services.select(services.c.id == 1).execute().first()
|
|
self.assertEqual(0, service.deleted)
|
|
service = services.select(services.c.id == 2).execute().first()
|
|
self.assertEqual(service.id, service.deleted)
|
|
|
|
volumes = sqlalchemy.Table('volumes', metadata2, autoload=True)
|
|
volume = volumes.select(volumes.c.id == "first").execute().first()
|
|
self.assertEqual("", volume.deleted)
|
|
volume = volumes.select(volumes.c.id == "second").execute().first()
|
|
self.assertEqual(volume.id, volume.deleted)
|
|
|
|
migration_api.downgrade(engine, TestMigrations.REPOSITORY, 151)
|
|
# NOTE(boris-42): One more time get from DB info about tables.
|
|
metadata = sqlalchemy.schema.MetaData()
|
|
metadata.bind = engine
|
|
services = sqlalchemy.Table('services', metadata, autoload=True)
|
|
volumes = sqlalchemy.Table('volumes', metadata, autoload=True)
|
|
|
|
_151_check(services, volumes)
|