Retail API C++ Client Library

An idiomatic C++ client library for the Retail API. Cloud Retail service enables customers to build end-to-end personalized recommendation systems without requiring a high level of expertise in machine learning, recommendation system, or Google Cloud.

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/retail/quickstart/ directory, which should give you a taste of the Retail API C++ client library API.

#include "google/cloud/retail/v2/catalog_client.h"
#include <iostream>

int main(int argc, char* argv[]) try {
  if (argc != 2) {
    std::cerr << "Usage: " << argv[0] << " project-id\n";
    return 1;
  }

  namespace retail = ::google::cloud::retail_v2;
  auto client =
      retail::CatalogServiceClient(retail::MakeCatalogServiceConnection());

  // The service only accepts "global" as the location for ListCatalogs()
  auto const location =
      "projects/" + std::string(argv[1]) + "/locations/global";
  for (auto r : client.ListCatalogs(location)) {
    if (!r) throw std::move(r).status();
    std::cout << r->DebugString() << "\n";
  }

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

Main classes

This library offers multiple *Client classes, which are listed below. Each one of these classes exposes all the RPCs for a gRPC service as member functions of the class. This library groups multiple gRPC services because they are part of the same product or are often used together. A typical example may be the administrative and data plane operations for a single product.

The library also has other classes that provide helpers, configuration parameters, and infrastructure to mock the *Client classes when testing your application.

More Information