Unless otherwise configured, the client libraries use Application Default Credentials to authenticate with Google Cloud Services. While this works for most applications, in some cases you may need to override this default. You can do so by providing the UnifiedCredentialsOption The following example shows how to explicitly load a service account key file:
[](std::string const& keyfile) {
auto is = std::ifstream(keyfile);
is.exceptions(std::ios::badbit); // Minimal error handling in examples
auto contents = std::string(std::istreambuf_iterator<char>(is.rdbuf()), {});
auto options =
google::cloud::Options{}.set<google::cloud::UnifiedCredentialsOption>(
google::cloud::MakeServiceAccountCredentials(contents));
return google::cloud::apigeeconnect_v1::ConnectionServiceClient(
google::cloud::apigeeconnect_v1::MakeConnectionServiceConnection(
options));
}
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-03-21 UTC."],[[["This webpage documents various versions of the Apigee Connect C++ client library, ranging from version 2.11.0 up to the latest release candidate, 2.37.0-rc."],["The client libraries default to using Application Default Credentials for authentication with Google Cloud Services, but this can be overridden if necessary."],["To override the default authentication, the UnifiedCredentialsOption can be used, such as by explicitly loading a service account key file."],["The webpage provides an example of how to override the default credentials by loading a service account key file, which is easy to understand, but it is also recommended to check the best practices guide for service account keys."],["The authentication component documentation offers further insight into the factory functions for creating Credentials objects."]]],[]]
