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::alloydb_v1::AlloyDBAdminClient(
google::cloud::alloydb_v1::MakeAlloyDBAdminConnection(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 2025-03-05 UTC."],[[["This page provides documentation for various versions of the AlloyDB C++ client library, ranging from version 2.11.0 up to the latest release candidate 2.37.0-rc."],["The client libraries use Application Default Credentials for authentication with Google Cloud Services, but this can be overridden if needed."],["You can override the default authentication by providing a `UnifiedCredentialsOption`, such as loading a service account key file using `MakeServiceAccountCredentials`."],["For detailed information on authentication, refer to the \"Authentication Components\" documentation, which covers the creation of `google::cloud::Credentials` objects."],["For best practices on service account key management, refer to the guide that covers this specifically, to help you manage it properly."]]],[]]
