Discovery Engine API C++ Client Library

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

#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;
}

Main classes

This library offers multiple *Client classes, which are listed below. Each one of these classes exposes all the RPCs for a service as member functions of the class. This library groups multiple 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