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::asset_v1::AssetServiceClient(
google::cloud::asset_v1::MakeAssetServiceConnection(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."],[[["The webpage provides documentation for various versions of a C++ library, ranging from version 2.11.0 to the latest release candidate 2.37.0-rc, with each version having a link to specific documentation on asset-override-authentication."],["By default, the client libraries utilize Application Default Credentials (ADC) for Google Cloud Services authentication, which can be overridden when needed."],["To override the default authentication, one can utilize `UnifiedCredentialsOption`, demonstrated by an example that loads a service account key file."],["The provided example showcases a straightforward method for overriding credentials, but users should refer to the \"Best practices for managing service account keys\" guide for more detailed information on service account key management."],["Additional information on creating `google::cloud::Credentials` objects can be found in the \"Authentication Components\" documentation."]]],[]]
