content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You 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 org.apache.camel.spring.boot;
  
  import org.apache.camel.CamelContext;
  import org.apache.camel.main.MainListener;
  import org.apache.camel.main.MainShutdownStrategy;
  import org.springframework.context.ApplicationContext;
  
  import java.util.Map;
  
  /**
   * Controller to keep the main running and perform graceful shutdown when the JVM is stopped.
   */
  public class CamelMainRunController {
  
      private final CamelSpringBootApplicationController controller;
      private final Thread daemon;
  
      public CamelMainRunController(ApplicationContext applicationContext, CamelContext camelContext) {
          controller = new CamelSpringBootApplicationController(applicationContext);
          controller.setCamelContext(camelContext);
  
          // setup main listeners eager on controller
          final Map<String, MainListener> listeners = applicationContext.getBeansOfType(MainListener.class);
          for (MainListener listener : listeners.values()) {
              controller.getMain().addMainListener(listener);
          }
  
          daemon = new Thread(new DaemonTask(), "CamelMainRunController");
      }
  
      public void start() {
          // avoid starting twice such as suspending and resuming a camel context
          if (!daemon.isAlive()) {
              daemon.start();
          }
      }
  
      public MainShutdownStrategy getMainShutdownStrategy() {
          return controller.getMainShutdownStrategy();
      }
  
      public Runnable getMainCompleteTask() {
          return controller.getMainCompletedTask();
      }
  
      private final class DaemonTask implements Runnable {
          @Override
          public void run() {
              controller.run();
          }
      }
  }
  