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 webpage documents the history of version releases for advisory notifications, beginning with version 2.37.0-rc as the latest, and going down to version 2.11.0."],["The client libraries typically use Application Default Credentials for authentication, but this can be overridden when necessary."],["To override the default authentication, you can use the UnifiedCredentialsOption by loading a service account key file as shown in the example code."],["The provided example demonstrates using the `UnifiedCredentialsOption` with `MakeServiceAccountCredentials`, although the 'Best practices for managing service account keys' guide should be consulted."],["The Authentication Components page provides additional details on how to create `google::cloud::Credentials` objects."]]],[]]
