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::assuredworkloads_v1::AssuredWorkloadsServiceClient(
google::cloud::assuredworkloads_v1::
MakeAssuredWorkloadsServiceConnection(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 details the various versions of the Assured Workloads C++ client library, ranging from version 2.11.0 to the latest release candidate, 2.37.0-rc."],["The latest stable version of the Assured Workloads C++ client library is 2.36.0, with many other previous versions also available to reference."],["The content explains how to override the default Application Default Credentials for authenticating with Google Cloud Services, using the UnifiedCredentialsOption to load a service account key file."],["Users are directed to the \"Best practices for managing service account keys\" guide for further information on service account key management."],["Additional details on the factory functions to create `google::cloud::Credentials` objects can be found under the \"Authentication Components\" section."]]],[]]