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::storageinsights_v1::StorageInsightsClient(
google::cloud::storageinsights_v1::MakeStorageInsightsConnection(
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 2025-05-07 UTC."],[[["The webpage provides documentation for various versions of the Storage Insights C++ client library, ranging from version 2.11.0 up to the latest release candidate 2.37.0-rc."],["The default authentication method for the client libraries is Application Default Credentials, but users can override this by providing a UnifiedCredentialsOption."],["Users can override authentication by explicitly loading a service account key file, as demonstrated in the provided example code."],["The documentation recommends the \"Best practices for managing service account keys\" guide for more information on handling service account keys, due to the example used being minimal."],["The documentation also provides a link to the Authentication Components section for more details on creating `google::cloud::Credentials` objects."]]],[]]
