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::dataplex_v1::ContentServiceClient(
google::cloud::dataplex_v1::MakeContentServiceConnection(options));
}
Follow these links to find examples for other *Client classes:
[[["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 overriding default authentication credentials when using Google Cloud client libraries, specifically within the context of the Dataplex service."],["The most recent release candidate version is 2.37.0-rc, and a list of previous versions, dating back to version 2.11.0, with their corresponding documentation links is provided."],["You can override default authentication by providing the `UnifiedCredentialsOption` and there is an example of loading a service account key file, using `MakeServiceAccountCredentials`, to accomplish this."],["Examples are provided for `ContentServiceClient`, `DataplexServiceClient`, and `MetadataServiceClient` classes to demonstrate the application of service account credentials."],["It's recommended to consult the \"Best practices for managing service account keys\" guide and the \"Authentication Components\" documentation for more detailed information on managing credentials."]]],[]]