README.md

Discovery Engine API C++ Client Library

This directory contains an idiomatic C++ client library for the Discovery Engine API, a service that powers high-quality content recommendations on your digital properties.

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

Quickstart

The quickstart/ directory contains a minimal environment to get started using this client library in a larger project. The following "Hello World" program is used in this quickstart, and should give you a taste of this library.

#include "google/cloud/discoveryengine/v1/document_client.h"
#include "google/cloud/location.h"
#include <iostream>

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

  auto const location = google::cloud::Location(argv[1], "global");

  namespace discoveryengine = ::google::cloud::discoveryengine_v1;
  auto client = discoveryengine::DocumentServiceClient(
      discoveryengine::MakeDocumentServiceConnection());

  auto const parent = location.FullName() +
                      "/dataStores/default_data_store/branches/default_branch";
  for (auto d : client.ListDocuments(parent)) {
    if (!d) throw std::move(d).status();
    std::cout << d->DebugString() << "\n";
  }

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

More Information

• Official documentation about the Discovery Engine API service
• Reference doxygen documentation for each release of this client library
• Detailed header comments in our public .h files