| # 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 the |
| 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. |
| |
| DocTags: |
| Advanced. |
| |
| Args: |
| impl: a callback `func(ctx) -> None`. |
| """ |
| __native__.add_generator(impl) |
