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::talent_v4::CompanyServiceClient(
google::cloud::talent_v4::MakeCompanyServiceConnection(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 2025-03-21 UTC."],[[["This document provides information on how to override the default Application Default Credentials (ADC) used by client libraries for authentication with Google Cloud Services."],["The `UnifiedCredentialsOption` can be used to override default credentials, demonstrated with an example of loading a service account key file."],["A list of specific `*Client` class examples, such as `talent_v4::CompanyServiceClient` and `talent_v4::JobServiceClient`, are provided for service account credential usage."],["The document provides a link to the latest release candidate, with the complete list of available versions from 2.37.0-rc to 2.11.0."],["The document recommends consulting the guide on best practices for managing service account keys and the Authentication Components for additional information on creating `google::cloud::Credentials` objects."]]],[]]
