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::workstations_v1::WorkstationsClient(
google::cloud::workstations_v1::MakeWorkstationsConnection(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 2025-03-14 UTC."],[[["This page documents various versions of the C++ Workstations client library, ranging from version 2.11.0 up to the latest release candidate, 2.37.0-rc."],["The library versions listed are for the purpose of overriding authentication, using the function workstations-override-authentication, for Google Cloud Services."],["The default authentication mechanism, Application Default Credentials, can be overridden by utilizing the `UnifiedCredentialsOption`."],["A service account key file can be loaded explicitly to override default credentials, as demonstrated in the provided example code snippet, showcasing how to use `google::cloud::UnifiedCredentialsOption`."],["For further information on creating `google::cloud::Credentials` objects, please consult the Authentication Components documentation."]]],[]]