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::beyondcorp_appconnections_v1::
AppConnectionsServiceClient(
google::cloud::beyondcorp_appconnections_v1::
MakeAppConnectionsServiceConnection(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 2025-03-05 UTC."],[[["This page provides documentation for overriding default authentication credentials when using Google Cloud client libraries, specifically focusing on BeyondCorp."],["The latest version is 2.37.0-rc, and the page contains links to the documentation for various previous versions, ranging from 2.36.0 down to 2.11.0."],["The default client library authentication method uses Application Default Credentials, but this can be overridden with the `UnifiedCredentialsOption`, as shown in the provided service account key file loading example."],["Examples are given for `AppConnectionsServiceClient`, `AppConnectorsServiceClient`, and `AppGatewaysServiceClient` classes, demonstrating how to load service account keys."],["It's also advised to follow the best practices for managing service account keys guide, as well as to refer to the Authentication Components for more information on the credentials objects."]]],[]]
