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) library, ranging from version 2.11.0 up to the latest release candidate, 2.37.0-rc."],["The documentation explains how to override the default authentication credentials, which typically use Application Default Credentials (ADC), by using the `UnifiedCredentialsOption`."],["The provided code example demonstrates how to load a service account key file to override default authentication, using the `MakeServiceAccountCredentials` function."],["Users should refer to the \"Best practices for managing service account keys\" guide for more detailed information about managing service account keys."],["For more information about creating `google::cloud::Credentials` objects, users can also consult the Authentication Components documentation provided in the \"See Also\" section."]]],[]]
