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) C++ client library, ranging from version 2.11.0 to the latest release candidate 2.37.0-rc."],["The client libraries typically use Application Default Credentials (ADC) for authentication with Google Cloud Services, but you can override this default behavior."],["To override default credentials, the `UnifiedCredentialsOption` can be used, for example by explicitly loading a service account key file."],["The provided code example demonstrates how to explicitly load a service account key file to override the default authentication."],["Refer to the \"Best practices for managing service account keys\" and \"Authentication Components\" guides for additional details on managing service account keys and creating `google::cloud::Credentials` objects, respectively."]]],[]]
