How to use simulate_sync_db method in autotest

Best Python code snippet using autotest_python

migrate.py

Source:migrate.py

...190                      self.get_mysql_args())191        finally:192            self.remove_test_db()193        print 'Test finished successfully'194    def simulate_sync_db(self, version=None):195        """\196        Create a fresh DB, copy the existing DB to it, and then197        try to synchronize it.198        """199        db_version = self.get_db_version()200        # don't do anything if we're already at the latest version201        if db_version == self.get_latest_version():202            print 'Skipping simulation, already at latest version'203            return204        # get existing data205        print 'Dumping existing data'206        dump_fd, dump_file = tempfile.mkstemp('.migrate_dump')207        os.system('mysqldump %s >%s' %208                  (self.get_mysql_args(), dump_file))209        # fill in test DB210        self.initialize_test_db()211        print 'Filling in test DB'212        os.system('mysql %s <%s' % (self.get_mysql_args(), dump_file))213        os.close(dump_fd)214        os.remove(dump_file)215        try:216            print 'Starting migration test on DB', self._get_db_name()217            self.migrate_to_version_or_latest(version)218        finally:219            self.remove_test_db()220        print 'Test finished successfully'221USAGE = """\222%s [options] sync|test|simulate|safesync [version]223Options:224    -d --database   Which database to act on225    -a --action     Which action to perform"""\226    % sys.argv[0]227def main():228    parser = OptionParser()229    parser.add_option("-d", "--database",230                      help="which database to act on",231                      dest="database")232    parser.add_option("-a", "--action", help="what action to perform",233                      dest="action")234    parser.add_option("-f", "--force", help="don't ask for confirmation",235                      action="store_true")236    parser.add_option('--debug', help='print all DB queries',237                      action='store_true')238    (options, args) = parser.parse_args()239    database = database_connection.DatabaseConnection(options.database)240    database.debug = options.debug241    database.reconnect_enabled = False242    database.connect()243    manager = MigrationManager(database, force=options.force)244    if len(args) > 0:245        if len(args) > 1:246            version = int(args[1])247        else:248            version = None249        if args[0] == 'sync':250            manager.do_sync_db(version)251        elif args[0] == 'test':252            manager.test_sync_db(version)253        elif args[0] == 'simulate':254            manager.simulate_sync_db(version)255        elif args[0] == 'safesync':256            print 'Simluating migration'257            manager.simulate_sync_db(version)258            print 'Performing real migration'259            manager.do_sync_db(version)260        else:261            print USAGE262        return263    print USAGE264if __name__ == '__main__':...

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