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 page provides documentation for various versions of the Cloud Filestore C++ client library, ranging from version 2.11.0 to the latest release candidate 2.37.0-rc."],["The latest release candidate, version 2.37.0-rc, is available, along with multiple previous versions, including 2.36.0, 2.35.0, and so forth, allowing users to select their desired version."],["The documentation explains how to override default authentication credentials by using the `UnifiedCredentialsOption` and providing a service account key file."],["The example provided uses a service account key file for simplicity, and users are advised to refer to the \"Best practices for managing service account keys\" guide for detailed information on handling service accounts."],["The \"Authentication Components\" section offers details on factory functions to generate `google::cloud::Credentials` objects for various authentication scenarios."]]],[]]