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.

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