| # Copyright 2021 The Chromium Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| import re |
| |
| # Names of well-known experiments |
| BBAGENT_GET_BUILD = 'luci.buildbucket.bbagent_getbuild' |
| CANARY = 'luci.buildbucket.canary_software' |
| NON_PROD = 'luci.non_production' |
| RECIPE_PY3 = 'luci.recipes.use_python3' |
| USE_BBAGENT = 'luci.buildbucket.use_bbagent' |
| USE_REALMS = 'luci.use_realms' |
| |
| WELL_KNOWN = frozenset([ |
| BBAGENT_GET_BUILD, |
| CANARY, |
| NON_PROD, |
| RECIPE_PY3, |
| USE_BBAGENT, |
| USE_REALMS, |
| ]) |
| |
| _VALID_NAME = re.compile(r'^[a-z][a-z0-9_]*(?:\.[a-z][a-z0-9_]*)*$') |
| |
| |
| def check_invalid_name(exp_name): |
| """Returns an error message string if this is an invalid expirement. |
| |
| Returns None if `exp_name` is a valid experiment name.""" |
| if not _VALID_NAME.match(exp_name): |
| return 'does not match %r' % _VALID_NAME.pattern |
| |
| if exp_name.startswith('luci.') and exp_name not in WELL_KNOWN: |
| return 'unknown experiment has reserved prefix "luci."' |
| |
| return |
