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 2025-04-17 UTC."],[[["This webpage provides documentation for various versions of the Web Risk C++ client library, ranging from version 2.11.0 up to the latest release candidate, 2.37.0-rc."],["The primary function discussed is how to override the default authentication credentials used by the client libraries when interacting with Google Cloud services."],["Users can override the default credentials by using the `UnifiedCredentialsOption` and providing a service account key file for explicit authentication."],["The example provided demonstrates loading a service account key file to override the authentication credentials, and users are encouraged to consult the provided best practices guide."],["Additional information on creating `google::cloud::Credentials` objects can be found within the \"Authentication Components\" section."]]],[]]
