In some cases, you may need to override the default universe domain used by the client library. Use the AddUniverseDomainOption when initializing the client library to change this default.
namespace spanner = ::google::cloud::spanner;
[](std::string const& project_id, std::string const& instance_id,
std::string const& database_id) {
google::cloud::Options options;
// AddUniverseDomainOption interrogates the UnifiedCredentialsOption, if
// set, in the provided Options for the Universe Domain associated with the
// credentials and adds it to the set of Options.
// If no UnifiedCredentialsOption is set, GoogleDefaultCredentials are used.
auto ud_options =
google::cloud::AddUniverseDomainOption(std::move(options));
if (!ud_options.ok()) throw std::move(ud_options).status();
return spanner::Client(spanner::MakeConnection(
spanner::Database(project_id, instance_id, database_id), *ud_options));
}
Follow these links to find examples for other *Client classes: