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 2025-04-17 UTC."],[[["The webpage provides documentation for overriding authentication credentials when interacting with Google Cloud Services, specifically within the context of the C++ client library for Artifact Registry."],["The latest available version is 2.37.0-rc, and a list of previous versions, dating back to version 2.11.0, is available, each with their own documentation."],["The default method for authentication utilizes Application Default Credentials, but this can be overridden by supplying the UnifiedCredentialsOption."],["An example is shown on how to explicitly load a service account key file for authentication, demonstrating the use of `UnifiedCredentialsOption`, `MakeServiceAccountCredentials`, and `ArtifactRegistryClient`."],["The page links to further documentation regarding the `Authentication Components` and the best practices for `managing service account keys` for more detailed information."]]],[]]
