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 2025-03-05 UTC."],[[["This document provides versioned documentation for the Google Cloud Build C++ client library, ranging from version 2.11.0 up to the latest release candidate, 2.37.0-rc."],["The primary focus of this content is on how to override the default Application Default Credentials (ADC) for authentication with Google Cloud Services, using the `UnifiedCredentialsOption`."],["An example is provided demonstrating how to load a service account key file explicitly, which is relevant for use cases that require overriding default authentication."],["The document includes links to examples for `cloudbuild_v1::CloudBuildClient` and `cloudbuild_v2::RepositoryManagerClient` to show how to use the override."],["It also recommends consulting the \"Best practices for managing service account keys\" guide and links to the \"Authentication Components\" section for more details on credential creation."]]],[]]