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 com.aliyun.odps;
  
  
  /**
   * OdpsHook 对象，用于在提交作业前后插入代码
   */
  public abstract class OdpsHook {
  
    /**
     * 提交代码前，框架会将 Job 和 Odps 对象传入 Hook
     *
     * @param job
     * @param odps
     * @throws OdpsException
     */
    public abstract void before(Job job, Odps odps) throws OdpsException;
  
    /**
     * 向远程提交 job 并产生 instance 时，将 Instance 和 Odps 对象传入 Hook
     *
     * @param instance
     * @param odps
     */
    public void onInstanceCreated(Instance instance, Odps odps) throws OdpsException {}
  
    /**
     * instance 结束后，框架会将 Instance 和 odps 对象传入 hook
     *
     * @param instance
     * @param odps
     * @throws OdpsException
     */
    public abstract void after(Instance instance, Odps odps) throws OdpsException;
  }
  