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::filestore_v1::CloudFilestoreManagerClient(
google::cloud::filestore_v1::MakeCloudFilestoreManagerConnection(
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 2025-03-05 UTC."],[[["This webpage provides documentation for overriding authentication credentials when interacting with Google Cloud Filestore using C++ client libraries, with the latest version being 2.37.0-rc."],["The default authentication mechanism is Application Default Credentials, but you can override this by providing the `UnifiedCredentialsOption`."],["An example demonstrates loading a service account key file to explicitly override the default credentials, which involves using `MakeServiceAccountCredentials` function."],["There is a list of multiple versions, from 2.11.0 to the latest, each with their respective documentation page for overriding authentication."],["The documentation references the \"Best practices for managing service account keys\" guide for more information and links the \"Authentication Components\" page for details on creating `google::cloud::Credentials` objects."]]],[]]
