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::networkservices_v1::DepServiceClient(
google::cloud::networkservices_v1::MakeDepServiceConnection(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 document provides a reference for various versions of the network services documentation, ranging from version 2.12.0 up to the release candidate 2.37.0-rc."],["The default authentication with Google Cloud Services utilizes Application Default Credentials, but you can override this setting when needed."],["To override default credentials, the `UnifiedCredentialsOption` can be utilized by explicitly loading a service account key file, as shown in the provided code snippet example."],["Examples for other client classes like `networkservices_v1::DepServiceClient` and `networkservices_v1::NetworkServicesClient` are linked within the document."],["The document recommends that you review the \"Best practices for managing service account keys\" guide for comprehensive details about managing service account keys."]]],[]]
