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::edgecontainer_v1::EdgeContainerClient(
google::cloud::edgecontainer_v1::MakeEdgeContainerConnection(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 2025-05-07 UTC."],[[["This webpage provides documentation for various versions of the `edgecontainer` C++ client library, ranging from version 2.11.0 to the latest release candidate 2.37.0-rc."],["The default authentication for the client libraries uses Application Default Credentials, but can be overridden using `UnifiedCredentialsOption` to handle specific use cases."],["Overriding authentication is demonstrated with an example that explicitly loads a service account key file for client initialization, using the `MakeServiceAccountCredentials` function."],["Users can refer to the \"Best practices for managing service account keys\" guide for more secure methods of managing service account keys."],["The page offers a \"See Also\" section, which provides links to \"Authentication Components\" for further details on creating `google::cloud::Credentials` objects."]]],[]]
