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::telcoautomation_v1::TelcoAutomationClient(
google::cloud::telcoautomation_v1::MakeTelcoAutomationConnection(
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 2025-03-21 UTC."],[[["This webpage provides documentation for overriding default authentication credentials when using Google Cloud client libraries, specifically within the context of Telco Automation."],["The latest version of the Telco Automation documentation is 2.37.0-rc, with multiple previous versions available, spanning from 2.20.0 to 2.36.0."],["Users can override default authentication by using the `UnifiedCredentialsOption` and loading a service account key file, which is demonstrated through an example in the documentation."],["The documentation suggests reviewing the guide on best practices for managing service account keys for optimal security and to learn more on the factory functions to create `google::cloud::Credentials`."],["By using `MakeServiceAccountCredentials` and then setting it in the `google::cloud::Options` users can configure the `TelcoAutomationClient`."]]],[]]