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::accessapproval_v1::AccessApprovalClient(
google::cloud::accessapproval_v1::MakeAccessApprovalConnection(
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 various versions of the Access Approval client library, ranging from version 2.11.0 up to the latest release candidate 2.37.0-rc."],["The latest version, which is the release candidate, is version 2.37.0-rc, and all other available versions can be found listed below it."],["By default, the client libraries use Application Default Credentials for Google Cloud Services authentication, but you may override this via `UnifiedCredentialsOption`."],["You can explicitly load a service account key file to override the default authentication, as shown in the provided example code."],["For more information on creating `google::cloud::Credentials` objects and best practices for managing service account keys, refer to the linked documentation on Authentication Components and service account key management."]]],[]]
