content: /*
   * Copyright (C) 2010-2101 Alibaba Group Holding Limited.
   *
   * 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 com.alibaba.otter.node.etl.common.io.download.impl.observer;
  
  //~--- JDK imports ------------------------------------------------------------
  
  import java.util.Observable;
  import java.util.Observer;
  
  import com.alibaba.otter.node.etl.common.io.download.impl.AbstractCommandDownload;
  
  /**
   * @author brave.taoy
   */
  public abstract class ExceptionObserver implements Observer {
  
      public abstract void exceptionOccured(AbstractCommandDownload download, Exception status);
  
      public void update(Observable o, Object arg) {
          if (arg instanceof Exception) {
              exceptionOccured((AbstractCommandDownload) o, (Exception) arg);
          }
      }
  }
  