Source code for cfme.utils.generators

# -*- coding: utf-8 -*-
import fauxfactory
import re

[docs]def random_vm_name(context=None, max_length=15): """Generates a valid VM name that should be valid for any provider we use. Constraints: * Maximum string length 15 characters (by default) * Only [a-z0-9-] Args: context: If you want to provide some custom string after ``test-`` instead of ``vm``. It is recommended to use a maximum of 5 characters with the default 15 character limit. Longer strings will be truncated Returns: A valid randomized VM name. """ template_str_length = 6 random_chars = 4 context_length = max_length - random_chars - template_str_length context = re.sub(r'[^a-z0-9-]', '', (context or 'vm').lower())[:context_length] return 'test-{}-{}'.format(context, fauxfactory.gen_alphanumeric(length=random_chars).lower())