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::talent_v4::CompanyServiceClient(
google::cloud::talent_v4::MakeCompanyServiceConnection(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 2025-03-21 UTC."],[[["This page provides documentation for overriding default authentication credentials when using Google Cloud client libraries, which typically rely on Application Default Credentials."],["The provided example demonstrates loading a service account key file using `UnifiedCredentialsOption` and `MakeServiceAccountCredentials` to override the default credentials."],["Multiple versions of the documentation are available, spanning from version 2.11.0 up to the latest release candidate version 2.37.0-rc, allowing you to select the proper documentation for your specific version."],["Links are provided for additional examples of overriding authentication credentials for various `*Client` classes, including `CompanyServiceClient`, `CompletionClient`, `EventServiceClient`, `JobServiceClient`, and `TenantServiceClient`."],["It is recommended to look at the \"Best practices for managing service account keys\" guide for security insights."]]],[]]
