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 2025-03-21 UTC."],[[["The latest available release candidate version is 2.37.0-rc, while the most recent fully released version is 2.36.0."],["This content provides documentation for numerous versions of the `edgecontainer-override-authentication`, ranging from version 2.11.0 up to the most current version."],["By default, client libraries use Application Default Credentials for authenticating with Google Cloud Services, but can be overridden if necessary."],["Overriding the default authentication can be done by using `UnifiedCredentialsOption`, such as loading credentials from a service account key file."],["The provided code example demonstrates how to load a service account key file to override the default credentials and it also refers to the documentation for best practices on managing service account keys, and the authentication components for further information."]]],[]]
