| # Copyright 2018 The LUCI Authors. |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| |
| def _generator(impl): |
| """Registers a callback that is called at the end of the config generation |
| stage to modify/append/delete generated configs in an arbitrary way. |
| |
| The callback accepts single argument 'ctx' which is a struct with following |
| fields: |
| 'config_set': a dict {config file name -> (str | proto)}. |
| |
| The callback is free to modify ctx.config_set in whatever way it wants, e.g. |
| by adding new values there or mutating/deleting existing ones. |
| |
| Args: |
| impl: a callback func(ctx) -> None. |
| """ |
| __native__.add_generator(impl) |
| |
| |
| # Public API. |
| core = struct( |
| generator = _generator, |
| ) |
