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::connectors_v1::ConnectorsClient(
google::cloud::connectors_v1::MakeConnectorsConnection(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."],[[["This document provides version-specific documentation for overriding authentication credentials in Google Cloud Connectors, starting from version 2.11.0 and going up to 2.37.0-rc, the latest version."],["Google Cloud client libraries typically use Application Default Credentials for authentication, but this can be overridden when required, such as by loading a service account key file."],["The method for overriding credentials involves using the `UnifiedCredentialsOption` with the service account key file, as demonstrated in the provided example code."],["Users should follow best practices for managing service account keys, as outlined in the linked Google Cloud guide, for optimal security."],["Additional information on creating `google::cloud::Credentials` objects can be found in the linked Authentication Components documentation."]]],[]]
