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::webrisk_v1::WebRiskServiceClient(
google::cloud::webrisk_v1::MakeWebRiskServiceConnection(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 2025-05-07 UTC."],[[["This page provides a list of WebRisk C++ client library versions, ranging from the latest release candidate `2.37.0-rc` down to version `2.11.0`."],["The primary focus of the documentation is on how to override default authentication credentials using the `UnifiedCredentialsOption`."],["Users can override authentication by providing a service account key file, demonstrated in the code example with loading a service account key file."],["For more information on authentication, including creating `google::cloud::Credentials` objects, refer to the \"Authentication Components\" section."],["The content specifically covers how to use `UnifiedCredentialsOption` to replace the Application Default Credentials with a custom authentication mechanism, like a service account key."]]],[]]
