content: /*
   * Copyright 2010 Proofpoint, Inc.
   *
   * 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
   *
   *     http://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.airlift.http.server;
  
  import com.google.common.util.concurrent.SettableFuture;
  import jakarta.servlet.http.HttpServlet;
  import jakarta.servlet.http.HttpServletRequest;
  import jakarta.servlet.http.HttpServletResponse;
  
  import java.io.IOException;
  import java.util.concurrent.Future;
  
  import static com.google.common.util.concurrent.Futures.nonCancellationPropagating;
  import static jakarta.servlet.http.HttpServletResponse.SC_OK;
  
  class DummyServlet
          extends HttpServlet
  {
      private final SettableFuture<?> sleeping = SettableFuture.create();
  
      @Override
      protected void doGet(HttpServletRequest request, HttpServletResponse response)
              throws IOException
      {
          response.setStatus(SC_OK);
          if (request.getUserPrincipal() != null) {
              response.getOutputStream().write(request.getUserPrincipal().getName().getBytes());
          }
          response.setHeader("X-Protocol", request.getProtocol());
  
          try {
              if (request.getParameter("sleep") != null) {
                  sleeping.set(null);
                  Thread.sleep(Long.parseLong(request.getParameter("sleep")));
              }
          }
          catch (InterruptedException e) {
              Thread.currentThread().interrupt();
          }
      }
  
      public Future<?> getSleeping()
      {
          return nonCancellationPropagating(sleeping);
      }
  }
  