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::artifactregistry_v1::ArtifactRegistryClient(
google::cloud::artifactregistry_v1::MakeArtifactRegistryConnection(
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 webpage provides documentation for various versions of the C++ Artifact Registry client library, ranging from version 2.11.0 up to the latest release candidate, 2.37.0-rc."],["The client libraries typically use Application Default Credentials for authentication, but it allows for overriding this default in specific situations, as shown in the example."],["The provided code snippet demonstrates how to override the default authentication by explicitly loading a service account key file, using the `UnifiedCredentialsOption` and `MakeServiceAccountCredentials` functions."],["For best security practices concerning service account keys, users are encouraged to consult the \"Best practices for managing service account keys\" guide."],["The page has links to \"Authentication Components\" for more information on the factory functions to create `google::cloud::Credentials` objects."]]],[]]
