| # |
| # Licensed to the Apache Software Foundation (ASF) under one |
| # or more contributor license agreements. See the NOTICE file |
| # distributed with this work for additional information |
| # regarding copyright ownership. The ASF licenses this file |
| # to you 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. |
| |
| import contextlib |
| import os |
| |
| from airflow import settings |
| from airflow.configuration import conf |
| |
| |
| @contextlib.contextmanager |
| def conf_vars(overrides): |
| original = {} |
| original_env_vars = {} |
| for (section, key), value in overrides.items(): |
| |
| env = conf._env_var_name(section, key) |
| if env in os.environ: |
| original_env_vars[env] = os.environ.pop(env) |
| |
| if conf.has_option(section, key): |
| original[(section, key)] = conf.get(section, key) |
| else: |
| original[(section, key)] = None |
| if value is not None: |
| conf.set(section, key, value) |
| else: |
| conf.remove_option(section, key) |
| settings.configure_vars() |
| try: |
| yield |
| finally: |
| for (section, key), value in original.items(): |
| if value is not None: |
| conf.set(section, key, value) |
| else: |
| conf.remove_option(section, key) |
| for env, value in original_env_vars.items(): |
| os.environ[env] = value |
| settings.configure_vars() |
| |
| |
| @contextlib.contextmanager |
| def env_vars(overrides): |
| orig_vars = {} |
| new_vars = [] |
| for (section, key), value in overrides.items(): |
| env = conf._env_var_name(section, key) |
| if env in os.environ: |
| orig_vars[env] = os.environ.pop(env, '') |
| else: |
| new_vars.append(env) |
| os.environ[env] = value |
| try: |
| yield |
| finally: |
| for env, value in orig_vars.items(): |
| os.environ[env] = value |
| for env in new_vars: |
| os.environ.pop(env) |