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::notebooks_v1::ManagedNotebookServiceClient(
google::cloud::notebooks_v1::MakeManagedNotebookServiceConnection(
options));
}
Follow these links to find examples for other *Client classes:
[[["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."],[[["The content provides a list of different versions of the notebooks documentation, ranging from version 2.11.0 up to the latest release candidate 2.37.0-rc."],["The primary focus is on how to override the default Application Default Credentials (ADC) for authenticating with Google Cloud Services, by utilizing `UnifiedCredentialsOption`."],["A code example demonstrates loading a service account key file to override the default authentication for `ManagedNotebookServiceClient`, and links to other client classes are provided."],["Best practices for managing service account keys are referenced for more security details, which recommends using the provided guide."],["Further information on creating `google::cloud::Credentials` objects can be found in the linked \"Authentication Components\" documentation."]]],[]]