Recommender C++ Client Library (original) (raw)

Recommender C++ Client Library

An idiomatic C++ client library for Recommender, a service on Google Cloud that provides usage recommendations and insights for Cloud products and services.

While this library is GA, please note Google Cloud C++ client libraries do not follow Semantic Versioning.

Quickstart

The following shows the code that you'll run in the google/cloud/recommender/quickstart/ directory, which should give you a taste of the Recommender C++ client library API.

#include "google/cloud/recommender/v1/recommender_client.h"
#include "google/cloud/location.h"
#include <iostream>

int main(int argc, char* argv[]) try {
  if (argc != 3) {
    std::cerr << "Usage: " << argv[0] << " project-id location-id\n";
    return 1;
  }

  auto const location = google:☁️:Location(argv[1], argv[2]);

  namespace recommender = ::google:☁️:recommender_v1;
  auto client =
      recommender::RecommenderClient(recommender::MakeRecommenderConnection());
  // For additional recommenders see:
  //     https://cloud.google.com/recommender/docs/recommenders#recommenders
  auto const parent =
      location.FullName() +
      "/recommenders/google.compute.instance.MachineTypeRecommender";
  for (auto r : client.ListRecommendations(parent)) {
    if (!r) throw std::move(r).status();
    std::cout << r->DebugString() << "\n";
  }

  return 0;
} catch (google:☁️:Status const& status) {
  std::cerr << "google:☁️:Status thrown: " << status << "\n";
  return 1;
}

Main classes

The main class in this library is recommender_v1::RecommenderClient. All RPCs are exposed as member functions of this class. Other classes provide helpers, configuration parameters, and infrastructure to mock recommender_v1::RecommenderClient when testing your application.

More Information

• Error Handling - describes how the library reports errors.
• How to Override the Default Endpoint - describes how to override the default endpoint.
• How to Override the Authentication Credentials - describes how to change the authentication credentials used by the library.
• Override Retry, Backoff, and Idempotency Policies - describes how to change the default retry policies.
• Environment Variables - describes environment variables that can configure the behavior of the library.
• How to Override the Default Universe Domain - describes how to override the default universe domain.

Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.

Last updated 2026-03-31 UTC.