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_cluster_v1::CloudRedisClusterClient(
google::cloud::redis_cluster_v1::MakeCloudRedisClusterConnection(
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 2025-03-14 UTC."],[[["This document provides information on how to override the default authentication credentials used by client libraries to authenticate with Google Cloud Services."],["The `UnifiedCredentialsOption` can be used to override default credentials, as demonstrated by an example showing how to load a service account key file."],["The latest version available is 2.37.0-rc, and the document provides links to versions dating back to 2.11.0 for accessing relevant information about authentication overrides."],["Examples for `redis_cluster_v1::CloudRedisClusterClient` and `redis_v1::CloudRedisClient` classes on how to override authentication using a service account key are linked within the content."],["It's best practice to follow the provided link to the \"Best practices for managing service account keys\" guide for security and management of service account keys."]]],[]]
