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 document provides a version history, ranging from version 2.11.0 to the latest release candidate 2.37.0-rc, for the `redis-override-authentication` documentation in C++."],["The client libraries typically use Application Default Credentials for authentication with Google Cloud Services, but this can be overridden when needed."],["You can override the default authentication credentials by providing the `UnifiedCredentialsOption`, such as loading a service account key file."],["The `UnifiedCredentialsOption` is demonstrated in an example that creates an `Options` object and setting the `UnifiedCredentialsOption` with `MakeServiceAccountCredentials`."],["The document refers to the [Best practices for managing service account keys](https://cloud.google.com/iam/docs/best-practices-for-managing-service-account-keys) guide and [Authentication Components](https://cloud.google.com/cpp/docs/reference/common/latest/group__guac.html) for more details."]]],[]]
