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 C++ DLP (Data Loss Prevention) API, ranging from version 2.11.0 up to 2.37.0-rc, which is currently the latest release candidate."],["The documentation demonstrates how to override the default authentication credentials used by the client libraries, typically Application Default Credentials, to authenticate with Google Cloud services."],["You can override authentication by using `UnifiedCredentialsOption` and loading a service account key file, as demonstrated in the code example provided, that showcases the method for how to explicitly load a service account key file."],["For more details on managing service account keys, users are encouraged to consult the \"Best practices for managing service account keys\" guide, and refer to the Authentication Components section."],["The page includes links to the documentation for each version, as well as general documentation for Authentication Components and Credentials objects, which provides further context to the user."]]],[]]
