content: /*
   * Copyright 2014-2025 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.test.launcher;
  
  import io.aeron.driver.Configuration;
  
  import java.io.ByteArrayOutputStream;
  import java.io.IOException;
  import java.io.ObjectOutputStream;
  import java.io.OutputStream;
  import java.net.InetSocketAddress;
  import java.nio.ByteBuffer;
  import java.nio.channels.ReadableByteChannel;
  import java.nio.channels.SocketChannel;
  
  public final class RemoteLaunchClient implements AutoCloseable
  {
      private final String host;
      private final int port;
      private SocketChannel clientChannel;
  
      private RemoteLaunchClient(final String host, final int port)
      {
          this.host = host;
          this.port = port;
      }
  
      public static RemoteLaunchClient connect(final String host, final int port) throws IOException
      {
          final RemoteLaunchClient remoteLaunchClient = new RemoteLaunchClient(host, port);
          remoteLaunchClient.init();
  
          return remoteLaunchClient;
      }
  
      private void init() throws IOException
      {
          clientChannel = SocketChannel.open();
          clientChannel.socket().connect(new InetSocketAddress(host, port), 5_000);
      }
  
      public ReadableByteChannel execute(final String... command) throws IOException
      {
          return execute(true, command);
      }
  
      public SocketChannel execute(final boolean usingBlockingIo, final String... command) throws IOException
      {
          final ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
          try (ObjectOutputStream out = new ObjectOutputStream(byteArrayOutputStream))
          {
              out.writeObject(command);
          }
  
          final ByteBuffer buffer = ByteBuffer.allocateDirect(byteArrayOutputStream.size());
          buffer.put(byteArrayOutputStream.toByteArray());
          buffer.flip();
          clientChannel.write(buffer);
  
          clientChannel.configureBlocking(usingBlockingIo);
  
          return clientChannel;
      }
  
      public void executeBlocking(final OutputStream out, final String... command) throws IOException
      {
          try (ReadableByteChannel commandResponse = execute(command))
          {
              final ByteBuffer buffer = ByteBuffer.allocate(Configuration.filePageSize());
  
              while (commandResponse.isOpen())
              {
                  final int read = commandResponse.read(buffer);
                  if (read < 0)
                  {
                      break;
                  }
  
                  buffer.flip();
                  out.write(buffer.array(), buffer.position(), buffer.limit());
                  buffer.clear();
              }
          }
      }
  
      public void close() throws IOException
      {
          clientChannel.close();
      }
  }
  