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 2025-03-14 UTC."],[[["This webpage documents different versions of the Edge Container, ranging from version 2.11.0 up to the latest release candidate, version 2.37.0-rc."],["The default method for authentication with Google Cloud Services is through Application Default Credentials, but there is support for overriding this default."],["Authentication credentials can be overridden by using the `UnifiedCredentialsOption` to manually specify service account keys."],["The webpage provides code examples on how to override default credentials and use service account keys, with links to more detailed documentation and best practices."],["Additional information on authentication components and factory functions for `google::cloud::Credentials` objects can be found in the \"See Also\" section."]]],[]]