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::redis_v1::CloudRedisClient(
google::cloud::redis_v1::MakeCloudRedisConnection(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 page provides documentation for overriding default authentication credentials when using Google Cloud services, specifically within the context of Redis and C++."],["The most recent version of the documentation available is 2.37.0-rc, and it includes a list of older versions dating back to 2.11.0, all concerning the override authentication process."],["The documentation demonstrates how to override the default authentication by using `UnifiedCredentialsOption` and explicitly loading a service account key file."],["It is recommended to review the best practices for managing service account keys, as the provided example is simplified for educational purposes."],["The documentation also references additional resources for `Authentication Components` to learn more about the `google::cloud::Credentials` objects."]]],[]]
