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 2025-03-14 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 primary focus of the content is on how to override the default authentication credentials used by the client libraries when interacting with Google Cloud Services."],["The example code demonstrates how to load a service account key file using `UnifiedCredentialsOption` and `MakeServiceAccountCredentials` to override the default credentials."],["It is recommended to consult the provided link to the \"Best practices for managing service account keys\" for more details on managing service account keys."],["The document also contains a link to more details about Authentication components for further information on factory functions to create `google::cloud::Credentials` objects."]]],[]]
