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::securitycenter_v1::SecurityCenterClient(
google::cloud::securitycenter_v1::MakeSecurityCenterConnection(
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 2025-03-21 UTC."],[[["This page provides documentation for overriding the default authentication credentials used by the client libraries when interacting with Google Cloud Services."],["The latest release candidate version is 2.37.0-rc, and a list of all previous versions, down to 2.11.0, are available, each linked to its respective documentation."],["The default authentication uses Application Default Credentials, but can be overridden using `UnifiedCredentialsOption`, as demonstrated by loading a service account key file."],["Examples for overriding credentials can be found for both `securitycenter_v1::SecurityCenterClient` and `securitycenter_v2::SecurityCenterClient` classes."],["Refer to the \"Best practices for managing service account keys\" guide and the \"Authentication Components\" documentation for more information on service account keys and `google::cloud::Credentials` objects."]]],[]]
