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 2025-03-05 UTC."],[[["This page documents the override authentication feature for the Data Loss Prevention (DLP) service using C++ client libraries, with version 2.37.0-rc being the latest."],["The provided list details various versions of the C++ client library for the DLP service, ranging from version 2.11.0 to the latest release candidate 2.37.0-rc."],["Client libraries typically utilize Application Default Credentials for authentication with Google Cloud Services, but this can be overridden when needed."],["Overriding default credentials involves using `UnifiedCredentialsOption` and may involve loading a service account key file, as demonstrated in the provided example."],["Users are advised to follow the \"Best practices for managing service account keys\" guide for information on handling service accounts."]]],[]]