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::advisorynotifications_v1::
AdvisoryNotificationsServiceClient(
google::cloud::advisorynotifications_v1::
MakeAdvisoryNotificationsServiceConnection(options));
}
[[["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 2025-03-05 UTC."],[[["This page provides documentation for overriding authentication credentials when using the Google Cloud C++ client library for Advisory Notifications, covering versions from 2.11.0 to 2.37.0-rc."],["The latest version of the documentation is for version 2.37.0-rc, and each linked version provides specific documentation related to overriding authentication."],["The client libraries, by default, use Application Default Credentials (ADC) for authentication with Google Cloud Services, but this can be overridden."],["You can override the default authentication by using the `UnifiedCredentialsOption` and explicitly loading a service account key file, as demonstrated in the provided code example."],["The documentation references best practices and further information regarding the managing of service account keys, and general authentication."]]],[]]
