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::recaptchaenterprise_v1::
RecaptchaEnterpriseServiceClient(
google::cloud::recaptchaenterprise_v1::
MakeRecaptchaEnterpriseServiceConnection(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 details how to override default authentication credentials when using Google Cloud client libraries, particularly focusing on the `recaptchaenterprise` service in C++."],["The latest version available for `recaptchaenterprise` is version 2.37.0-rc, with numerous previous versions listed, back to 2.12.0."],["Overriding default authentication involves utilizing `UnifiedCredentialsOption` and specifically demonstrates how to load a service account key file."],["The provided example shows how to load a service account key file from disk and use it for authentication when creating a `RecaptchaEnterpriseServiceClient`."],["Refer to the \"Authentication Components\" and \"Best practices for managing service account keys\" links for detailed information on creating `Credentials` objects and handling service account keys."]]],[]]
