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."],[[["The latest version of the Container Analysis library is 2.37.0-rc, and numerous prior versions are also available, dating back to version 2.11.0."],["The Container Analysis client libraries typically authenticate using Application Default Credentials, but users can override this using the UnifiedCredentialsOption."],["Users can override authentication by providing a service account key file, which can be loaded via the `UnifiedCredentialsOption`."],["Example code snippets are available for `containeranalysis_v1::ContainerAnalysisClient` and `containeranalysis_v1::GrafeasClient` to show how to override the authentication credentials."],["For detailed guidance on service account key management, refer to the Best practices for managing service account keys guide, and for more information on the factory functions to create `google::cloud::Credentials` objects, refer to the Authentication Components guide."]]],[]]
