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::dlp_v2::DlpServiceClient(
google::cloud::dlp_v2::MakeDlpServiceConnection(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 provides documentation for various versions of the Data Loss Prevention (DLP) client library, ranging from version 2.11.0 up to the latest release candidate 2.37.0-rc."],["The primary focus of the content is on how to override default authentication credentials when interacting with Google Cloud services, providing a code example that demonstrates loading a service account key file."],["The default authentication method used by the client libraries is Application Default Credentials, but this can be overridden using the UnifiedCredentialsOption."],["For detailed guidance on managing service account keys, users are advised to refer to the \"Best practices for managing service account keys\" guide."],["The page also references a section called \"Authentication Components\" for more information on the factory functions to create `google::cloud::Credentials` objects."]]],[]]
