Server.java

package io.vertx.example.grpc.empty;

import io.grpc.stub.StreamObserver;
import io.vertx.core.AbstractVerticle;
import io.vertx.example.grpc.EmptyPingPongServiceGrpc;
import io.vertx.example.grpc.EmptyProtos;
import io.vertx.example.util.Runner;
import io.vertx.grpc.VertxServer;
import io.vertx.grpc.VertxServerBuilder;

/*
 * @author <a href="mailto:plopes@redhat.com">Paulo Lopes</a>
 */
public class Server extends AbstractVerticle {

  // Convenience method so you can run it in your IDE
  public static void main(String[] args) {
    Runner.runExample(Server.class);
  }

  @Override
  public void start() {

    // The rpc service
    EmptyPingPongServiceGrpc.EmptyPingPongServiceImplBase service = new EmptyPingPongServiceGrpc.EmptyPingPongServiceImplBase() {
      @Override
      public void emptyCall(EmptyProtos.Empty request, StreamObserver<EmptyProtos.Empty> responseObserver) {
        responseObserver.onNext(EmptyProtos.Empty.newBuilder().build());
        responseObserver.onCompleted();
      }
    };

    // Create the server
    VertxServer rpcServer = VertxServerBuilder
      .forPort(vertx, 8080)
      .addService(service)
      .build();

    // start the server
    rpcServer.start(ar -> {
      if (ar.failed()) {
        ar.cause().printStackTrace();
      }
    });
  }
}