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 provides a list of available versions for the Assured Workloads C++ library, ranging from version 2.11.0 up to the latest release candidate 2.37.0-rc, and including version 2.27.0."],["The library defaults to using Application Default Credentials for Google Cloud Services authentication, but this can be overridden for specific cases."],["Overriding the default authentication can be done by using the UnifiedCredentialsOption, like providing a service account key file as shown in the provided example code."],["The example code demonstrates how to load a service account key file and set it as authentication credentials using the UnifiedCredentialsOption to establish the connection to the client service."],["More information on `google::cloud::Credentials` objects can be found on the Authentication Components page."]]],[]]