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."],[[["The webpage provides documentation for overriding default authentication credentials when interacting with Google Cloud Services, specifically within the context of the Telco Automation client library."],["It highlights that client libraries typically utilize Application Default Credentials (ADC), but this can be overridden using the `UnifiedCredentialsOption`."],["The documentation provides a code example demonstrating how to explicitly load a service account key file to manage authentication, offering an alternative to default credentials."],["The latest version is 2.37.0-rc, with various previous versions listed, such as 2.36.0, 2.35.0, and down to version 2.19.0, which are all accessible via provided links."],["Users are directed to the \"Best practices for managing service account keys\" guide and \"Authentication Components\" for further information on managing service accounts and creating `google::cloud::Credentials` objects, respectively."]]],[]]
