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 2025-04-17 UTC."],[[["This document provides a comprehensive list of Container Analysis C++ client library versions, ranging from the latest release candidate 2.37.0-rc down to version 2.11.0."],["The client libraries typically use Application Default Credentials for authentication with Google Cloud Services, but this can be overridden when needed."],["You can override the default authentication by providing the `UnifiedCredentialsOption`, which allows for the explicit loading of a service account key file, as demonstrated in the provided code example."],["Examples of how to override authentication for other client classes such as `containeranalysis_v1::ContainerAnalysisClient` and `containeranalysis_v1::GrafeasClient` are linked in the documentation."],["For more information on creating `google::cloud::Credentials` objects, you can consult the Authentication Components section."]]],[]]
