1 /* 2 * Copyright 2022 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #pragma once 18 // OS specific utility functions. 19 20 #include <optional> 21 #include <string> 22 23 namespace netsim { 24 namespace osutils { 25 26 /** 27 * Return the value of environment variable if exists. Otherwise, the default 28 * value. 29 */ 30 std::string GetEnv(const std::string &name, const std::string &default_value); 31 32 /** 33 * Return the path containing runtime user files. 34 */ 35 std::string GetDiscoveryDirectory(); 36 37 /** 38 * Return the path of netsim ini file. 39 */ 40 std::string GetNetsimIniFilepath(); 41 42 /** 43 * Return the frontend grpc port. 44 */ 45 std::optional<std::string> GetServerAddress(bool frontend_server = true); 46 } // namespace osutils 47 } // namespace netsim 48