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::cloudcontrolspartner_v1::
CloudControlsPartnerCoreClient(
google::cloud::cloudcontrolspartner_v1::
MakeCloudControlsPartnerCoreConnection(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 2025-03-05 UTC."],[[["The latest release candidate version is 2.37.0-rc, and other versions available are from 2.23.0 up to 2.36.0."],["Client libraries by default use Application Default Credentials for authentication with Google Cloud Services, but it is possible to override this."],["Overriding the default authentication can be done by providing a UnifiedCredentialsOption, like loading a service account key file as described in the documentation."],["Examples are provided for `cloudcontrolspartner_v1::CloudControlsPartnerCoreClient` and `cloudcontrolspartner_v1::CloudControlsPartnerMonitoringClient` to demonstrate how to override the authentication."],["The best practice for managing service account keys should be consulted for more information and refer to the authentication components for factory functions to create `google::cloud::Credentials`."]]],[]]