1 // 2 // 3 // Copyright 2016 gRPC authors. 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. 16 // 17 // 18 19 #include <grpc/support/port_platform.h> 20 21 #include <string> 22 23 #include "absl/log/log.h" 24 #include "absl/strings/str_cat.h" 25 #include "absl/types/optional.h" 26 #include "src/core/lib/security/credentials/credentials.h" 27 #include "src/core/lib/security/credentials/google_default/google_default_credentials.h" 28 #include "src/core/util/env.h" 29 grpc_get_well_known_google_credentials_file_path_impl(void)30std::string grpc_get_well_known_google_credentials_file_path_impl(void) { 31 auto base = grpc_core::GetEnv(GRPC_GOOGLE_CREDENTIALS_PATH_ENV_VAR); 32 if (!base.has_value()) { 33 LOG(ERROR) << "Could not get " << GRPC_GOOGLE_CREDENTIALS_PATH_ENV_VAR 34 << " environment variable."; 35 return ""; 36 } 37 return absl::StrCat(*base, "/", GRPC_GOOGLE_CREDENTIALS_PATH_SUFFIX); 38 } 39