}
      }.start();
    }
  }

  private static class FailStartService extends NoOpService {
    @Override
    protected void doStart() {
      notifyFailed(new IllegalStateException("start failure"));
    }
  }

  private static class FailRunService extends NoOpService {
    @Override
    protected void doStart() {
      super.doStart();

 *         } catch (TimeoutException timeout) {
 *           // stopping timed out
 *         }
 *       }
 *     });
 *     manager.startAsync();  // start all the services asynchronously
 *   }
 * }
 * }
 *
 * <p>This class uses the ServiceManager's methods to start all of its services, to respond to
 * service failure and to ensure that when the JVM is shutting down all the services are stopped.
 *
 * @author Luke Sandberg

import org.codelibs.fess.util.JobProcess;

import jakarta.annotation.PreDestroy;

/**
 * Helper class for managing system processes in Fess.
 * This class provides functionality to start, stop, and manage external processes
 * such as crawler processes, with proper resource cleanup and lifecycle management.
 */
public class ProcessHelper {
    /** Logger instance for this class */

  }

  /**
   * Starts the server on the loopback interface for the given port.
   *
   * @param port the port to listen to, or 0 for any available port. Automated tests should always
   * use port 0 to avoid flakiness when a specific port is unavailable.
   */
  @Throws(IOException::class)
  @JvmOverloads
  public fun start(port: Int = 0) {
    start(InetAddress.getByName("localhost"), port)
  }

    }

    /**
     * Displays the start crawling form.
     *
     * @return HTML response for the start crawling form
     */
    @Execute
    @Secured({ ROLE })
    public HtmlResponse startCrawlingForm() {
        saveToken();
        return asHtml(path_AdminWizard_AdminWizardStartJsp).useForm(StartCrawlingForm.class);
    }

    /**
     * Starts the crawling process for all configured crawlers.

    // JVM shutdown will not be prevented from exiting after this service has stopped or failed.
    // Technically this listener is added after start() was called so it is a little gross, but it
    // is called within doStart() so we know that the service cannot terminate or fail concurrently
    // with adding this listener so it is impossible to miss an event that we are interested in.
    addListener(

    // JVM shutdown will not be prevented from exiting after this service has stopped or failed.
    // Technically this listener is added after start() was called so it is a little gross, but it
    // is called within doStart() so we know that the service cannot terminate or fail concurrently
    // with adding this listener so it is impossible to miss an event that we are interested in.
    addListener(

      // the worker has yet to start) then we don't need to start the worker.
      if (workerRunningState == RUNNING || workerRunningState == QUEUED) {
        queue.add(task);
        return;
      }

      oldRunCount = workerRunCount;

      // If the worker is not yet running, the delegate Executor might reject our attempt to start

        throw new UnsupportedOperationException();
    }

    /**
     * Starts a scheduled job by ID.
     *
     * @param id the ID of the scheduled job to start
     * @return JSON response indicating success or failure
     */
    // PUT /api/admin/scheduler/{id}/start
    @Execute(urlPattern = "{}/@word")
    public JsonResponse<ApiResult> put$start(final String id) {
        scheduledJobService.getScheduledJob(id).ifPresent(entity -> {

            if (response.getBody().jsonPath().getInt("response.status") == 0) {
                logger.info("Start scheduler \"{}\"", schedulerId);
                return;
            }
            ThreadUtil.sleep(1000L);
        }
        fail("could not start job.");
    }

    protected static void waitJob(final String namePrefix) {