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 various versions of the Telco Automation client library, ranging from version 2.19.0 up to the latest release candidate, 2.37.0-rc."],["The content explains how to override the default authentication credentials using the `UnifiedCredentialsOption` when interacting with Google Cloud services, and it is recommended to use the application default credentials if not configured otherwise."],["An example demonstrates explicitly loading a service account key file to override default credentials, showcasing how to set options and create a Telco Automation client, all while having minimal error handling."],["The documentation recommends reviewing the best practices for managing service account keys for more in-depth guidance on security."],["The content provides a link to the authentication components to get more information on the factory functions to create `google::cloud::Credentials` objects."]]],[]]
