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::orgpolicy_v2::OrgPolicyClient(
google::cloud::orgpolicy_v2::MakeOrgPolicyConnection(options));
}
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-07-09 UTC."],[[["This webpage provides documentation for various versions of the OrgPolicy C++ client library, ranging from version 2.11.0 up to the latest release candidate, 2.37.0-rc."],["The primary focus of the content is on how to override default authentication credentials, which utilize Application Default Credentials."],["Users can override the default credentials by leveraging the `UnifiedCredentialsOption` and are given an example on how to do so, using the `MakeServiceAccountCredentials` method with a service account key file."],["Best practices for managing service account keys are recommended, and links to the guide are included for further reference."],["The page contains a link to the \"Authentication Components\" documentation, providing users with more information on creating `google::cloud::Credentials` objects."]]],[]]
