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::binaryauthorization_v1::
BinauthzManagementServiceV1Client(
google::cloud::binaryauthorization_v1::
MakeBinauthzManagementServiceV1Connection(options));
}
Follow these links to find examples for other *Client classes:
[[["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 documentation for the C++ client library, specifically regarding Binary Authorization, with the latest release candidate version being 2.37.0-rc."],["The client libraries typically use Application Default Credentials for authentication, but users can override this by using the `UnifiedCredentialsOption`."],["The document demonstrates overriding the default authentication by providing a service account key file through `UnifiedCredentialsOption` with example code."],["Examples are provided for multiple `Client` classes, including `BinauthzManagementServiceV1Client`, `SystemPolicyV1Client`, and `ValidationHelperV1Client`, showing how to override the authentication credentials."],["Users can refer to the Authentication Components documentation for details on creating `google::cloud::Credentials` objects and consult the best practices guide for managing service account keys."]]],[]]
