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 2025-03-05 UTC."],[[["This page provides documentation for different versions of the C++ Asset API, ranging from the latest release candidate (2.37.0-rc) down to version 2.11.0."],["The documentation focuses on how to override the default authentication credentials, which usually rely on Application Default Credentials, when interacting with Google Cloud Services."],["Overriding authentication credentials can be done by using the `UnifiedCredentialsOption` and explicitly loading a service account key file, as demonstrated in the provided C++ code example."],["The example shown in this documentation is easily understandable, but users should still consult the \"Best practices for managing service account keys\" guide for more in-depth details."],["Users looking for more information on `google::cloud::Credentials` objects can find it under the \"Authentication Components\" link."]]],[]]
