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::scheduler_v1::CloudSchedulerClient(
google::cloud::scheduler_v1::MakeCloudSchedulerConnection(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 2025-04-02 UTC."],[[["This webpage provides documentation for different versions of the Cloud Scheduler client library, ranging from version 2.11.0 up to the release candidate 2.37.0-rc."],["The documentation outlines how to override the default authentication credentials used by the client libraries when interacting with Google Cloud Services."],["Users can override the default credentials by utilizing the `UnifiedCredentialsOption`, such as explicitly loading a service account key file, with code examples included for clarity."],["The documentation recommends consulting the \"Best practices for managing service account keys\" guide for detailed security information on this topic."],["Additional resources are provided, such as the \"Authentication Components\" documentation, for more information on creating `google::cloud::Credentials` objects."]]],[]]
