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/*
      *
      *  *  Copyright 2014 Orient Technologies LTD (info(at)orientechnologies.com)
      *  *
      *  *  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.
      *  *
      *  * For more information: http://www.orientechnologies.com
      *
      */
package com.orientechnologies.orient.server;

import com.orientechnologies.orient.core.Orient;

public class OServerShutdownHook extends Thread {
   private final OServer server;

   protected OServerShutdownHook(final OServer server) {
     this.server = server;
     Orient.instance().removeShutdownHook();
     Runtime.getRuntime().addShutdownHook(this);
   }

   /**
    * Catch the JVM exit and assure to shutdown the Orient Server.
    */
   @Override
   public void run() {
     if (server != null)
       if( !server.shutdown() ){
         // ALREADY IN SHUTDOWN, WAIT FOR 5 SEC MORE
         try {
           Thread.sleep(5000);
         } catch (InterruptedException e) {
         }
       }
   }

   public void cancel() {
     try {
       Runtime.getRuntime().removeShutdownHook(this);
     } catch (IllegalStateException e) {
     }
   }
 }