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 provides a comprehensive list of available versions for the C++ DLP (Data Loss Prevention) client library, ranging from version 2.11.0 up to the latest release candidate 2.37.0-rc."],["The default authentication method for the C++ client libraries is Application Default Credentials, however this can be overridden if needed."],["Users can override default credentials by providing the `UnifiedCredentialsOption`, and loading a service account key file, as shown in the provided code example."],["For detailed information on creating `google::cloud::Credentials` objects, refer to the Authentication Components section."],["It is recommended to review the best practices guide for managing service account keys to ensure proper security when overriding default credentials."]]],[]]