content: package act.handler.builtin.controller;
  
  /*-
   * #%L
   * ACT Framework
   * %%
   * Copyright (C) 2014 - 2017 ActFramework
   * %%
   * 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.
   * #L%
   */
  
  import act.Act;
  import act.app.ActionContext;
  import act.app.App;
  import act.handler.ExpressHandler;
  import act.view.HotReloading;
  import org.osgl.http.H;
  import org.osgl.mvc.result.Conflict;
  
  import java.util.concurrent.atomic.AtomicInteger;
  
  public class HotReloadingHandler extends FastRequestHandler implements ExpressHandler, App.HotReloadListener {
  
      private static final AtomicInteger HIT_COUNTER = new AtomicInteger(0);
  
      public static HotReloadingHandler INSTANCE = new HotReloadingHandler();
  
      private static final HotReloading HOT_RELOADING = new HotReloading();
  
      private HotReloadingHandler() {
          Act.app().registerHotReloadListener(this);
      }
  
      @Override
      public void preHotReload() {
          HIT_COUNTER.set(1);
      }
  
      @Override
      public void handle(ActionContext context) {
          // session is not initialized at the moment
          // we have to use other mechanism
          //Integer delay = context.session().cached(DELAY);
          int delay = HIT_COUNTER.get();
          if (delay < 5) {
              delay++;
              HIT_COUNTER.set(delay);
          }
          context.renderArg("delay", delay);
          context.accept(H.Format.HTML);
          HOT_RELOADING.apply(context.req(), context.prepareRespForResultEvaluation());
      }
  
      @Override
      public String toString() {
          return "error: hot-reloading";
      }
  }
  