import logging log = logging.getLogger(__name__) def migrate_db(db_dir, start, end): current = start while current < end: if current == 1: from .migrate1to2 import do_migration elif current == 2: from .migrate2to3 import do_migration elif current == 3: from .migrate3to4 import do_migration elif current == 4: from .migrate4to5 import do_migration elif current == 5: from .migrate5to6 import do_migration elif current == 6: from .migrate6to7 import do_migration elif current == 7: from .migrate7to8 import do_migration elif current == 8: from .migrate8to9 import do_migration else: raise Exception("DB migration of version {} to {} is not available".format(current, current+1)) do_migration(db_dir) current += 1 log.info("successfully migrated the database from revision %i to %i", current - 1, current) return None def run_migration_script(): import sys log_format = "(%(asctime)s)[%(filename)s:%(lineno)s] %(funcName)s(): %(message)s" logging.basicConfig(level=logging.DEBUG, format=log_format, filename="migrator.log") sys.stdout = open("migrator.out.log", 'w') sys.stderr = open("migrator.err.log", 'w') migrate_db(sys.argv[1], int(sys.argv[2]), int(sys.argv[3])) if __name__ == "__main__": run_migration_script()