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::securesourcemanager_v1::SecureSourceManagerClient(
google::cloud::securesourcemanager_v1::
MakeSecureSourceManagerConnection(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 provides documentation for overriding default authentication credentials when using the SecureSourceManager client library, with the latest release candidate being version 2.37.0-rc."],["The client libraries typically use Application Default Credentials for authentication, but you can override this by utilizing the UnifiedCredentialsOption."],["The provided code example illustrates how to override the default credentials by loading a service account key file, demonstrating a simplified approach for educational purposes."],["There is documentation for multiple versions of the secure source manager, starting from version 2.18.0 up to 2.37.0-rc."],["The best practices for managing service account keys can be found in a separate guide, linked on this page."]]],[]]
