content: /*
   * Copyright 2015-2025 Real Logic Limited.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   * https://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package io.aeron.benchmarks.grpc;
  
  import io.grpc.Server;
  import io.grpc.netty.shaded.io.grpc.netty.NettyServerBuilder;
  import org.agrona.concurrent.ShutdownSignalBarrier;
  
  import java.io.IOException;
  import java.time.Instant;
  import java.util.Properties;
  
  import static io.aeron.benchmarks.PropertiesUtil.loadPropertiesFiles;
  import static io.aeron.benchmarks.PropertiesUtil.mergeWithSystemProperties;
  import static io.aeron.benchmarks.grpc.GrpcConfig.getServerBuilder;
  import static org.agrona.PropertyAction.PRESERVE;
  import static org.agrona.PropertyAction.REPLACE;
  
  public class EchoServer implements AutoCloseable
  {
      private final Server server;
  
      public EchoServer(final NettyServerBuilder serverBuilder)
      {
          server = serverBuilder.addService(new EchoService()).build();
      }
  
      public void start() throws IOException
      {
          server.start();
          System.out.println(Instant.now() + " [gRPC] server started, listening on: " + server.getListenSockets());
      }
  
      public void close() throws Exception
      {
          System.out.println(Instant.now() + " [gRPC] shutting down server...");
          server.shutdownNow();
          server.awaitTermination();
          System.out.println(Instant.now() + " [gRPC] shutdown complete.");
      }
  
      public static void main(final String[] args) throws Exception
      {
          mergeWithSystemProperties(PRESERVE, loadPropertiesFiles(new Properties(), REPLACE, args));
  
          try (ShutdownSignalBarrier signalBarrier = new ShutdownSignalBarrier();
              EchoServer server = new EchoServer(getServerBuilder()))
          {
              server.start();
  
              signalBarrier.await();
          }
      }
  }
  