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::vmwareengine_v1::VmwareEngineClient(
google::cloud::vmwareengine_v1::MakeVmwareEngineConnection(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 2025-03-21 UTC."],[[["This page provides documentation for various versions of the VMware Engine, ranging from version 2.11.0 up to the latest release candidate 2.37.0-rc."],["The default method for authentication with Google Cloud Services is through Application Default Credentials, but there is information on how to override them."],["You can override the default authentication by providing the `UnifiedCredentialsOption`, and an example is provided that shows how to load a service account key file."],["Refer to the \"Best practices for managing service account keys\" guide for more information about managing service account keys."],["The Authentication Components page provides additional information on factory functions to create `google::cloud::Credentials` objects."]]],[]]
