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::containeranalysis_v1::ContainerAnalysisClient(
google::cloud::containeranalysis_v1::MakeContainerAnalysisConnection(
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."],[[["This document provides a reference for the Container Analysis C++ client library, with versions ranging from 2.11.0 to 2.37.0-rc, the latter being the latest release candidate."],["The document details how to override the default authentication credentials used by the client libraries, which typically rely on Application Default Credentials, by using the `UnifiedCredentialsOption`."],["An example is provided demonstrating how to explicitly load a service account key file for authentication, leveraging the `MakeServiceAccountCredentials` function."],["The document directs users to additional examples for `ContainerAnalysisClient` and `GrafeasClient`, and a resource for best practices on managing service account keys."],["The Authentication components page, available at the provided link, offers further details on creating the `Credentials` objects for use in authenticating."]]],[]]
