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::baremetalsolution_v2::BareMetalSolutionClient(
google::cloud::baremetalsolution_v2::MakeBareMetalSolutionConnection(
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 different versions of the BareMetalSolution client library, ranging from version 2.11.0 up to the latest release candidate, 2.37.0-rc."],["The content details how to override the default authentication credentials used by the client libraries through the use of the `UnifiedCredentialsOption`, which is useful for specific authentication needs."],["A service account key file can be explicitly loaded to override default credentials, as demonstrated in the provided code example, which utilizes the `MakeServiceAccountCredentials` function."],["The page recommends reviewing the \"Best practices for managing service account keys\" guide and the \"Authentication Components\" documentation for more detailed information on authentication."],["This documentation shows the `BareMetalSolutionClient` that is set up by using `MakeBareMetalSolutionConnection`."]]],[]]
