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 release candidate version is 2.37.0-rc, and this page includes versions from 2.37.0-rc down to 2.11.0, where each link corresponds to a specific version's documentation for overriding authentication in Container Analysis."],["Client libraries generally use Application Default Credentials for authentication, but users can override this with `UnifiedCredentialsOption`."],["Users can override the default authentication by explicitly loading a service account key file, as demonstrated in the provided example code."],["The example demonstrates overriding authentication using `MakeServiceAccountCredentials` for the `ContainerAnalysisClient` and `GrafeasClient` classes."],["The \"See Also\" section directs users to the Authentication Components page for more details on creating `google::cloud::Credentials` objects and also to the best practices for managing service account keys."]]],[]]
