1#!/usr/bin/env python3 2# 3# Copyright 2018 - The Android Open Source Project 4# 5# Licensed under the Apache License, Version 2.0 (the "License"); 6# you may not use this file except in compliance with the License. 7# You may obtain a copy of the License at 8# 9# http://www.apache.org/licenses/LICENSE-2.0 10# 11# Unless required by applicable law or agreed to in writing, software 12# distributed under the License is distributed on an "AS IS" BASIS, 13# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14# See the License for the specific language governing permissions and 15# limitations under the License. 16import os 17 18from acts.config.config_sources.config_source import ConfigSource 19 20 21class EnvConfigSource(ConfigSource): 22 """Defines how to obtain config data from Environment Variables.""" 23 def gather_configs(self, config_entry_metas): 24 """Gathers configs from the environment (os.environ). 25 26 Args: 27 config_entry_metas: A list of ConfigEntryMetas to fetch inputs for. 28 29 Returns: 30 A dict of {config_key: value}. 31 """ 32 config = {} 33 for entry in config_entry_metas: 34 if (entry.env_var_name is not None and 35 entry.env_var_name in os.environ): 36 config[entry.acts_config_key] = os.environ[entry.env_var_name] 37 return config 38