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::cloudbuild_v1::CloudBuildClient(
google::cloud::cloudbuild_v1::MakeCloudBuildConnection(options));
}
Follow these links to find examples for other *Client classes:
[[["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."],[[["The latest version of the Cloud Build documentation is version 2.37.0-rc, but the page also provides access to previous versions, ranging back to version 2.11.0."],["The client libraries default to using Application Default Credentials for Google Cloud Services, but this can be overridden."],["Authentication credentials can be overridden by providing the `UnifiedCredentialsOption`, as demonstrated with an example of loading a service account key file."],["The page provides examples on how to override credentials for both `cloudbuild_v1::CloudBuildClient` and `cloudbuild_v2::RepositoryManagerClient`."],["Refer to the \"Best practices for managing service account keys\" guide and \"Authentication Components\" for more detailed information on managing service accounts and creating credential objects, respectively."]]],[]]
