1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18 package org.apache.commons.pipeline;
19
20 /**
21 * This interface specifies a job or set of tasks that are to be run at a
22 * well-specified points in the pipeline lifecycle. It is intended to be a
23 * means by which third-party plugins can be added to the pipeline framework.
24 */
25 public interface PipelineLifecycleJob {
26
27 /**
28 * This is called by the pipeline engine once the pipeline is fully configured,
29 * just prior to stage driver start.
30 */
31 public void onStart(Pipeline pipeline);
32
33 /**
34 * This is called by the pipeline engine after all data processing has completed.
35 */
36 public void onFinish(Pipeline pipeline);
37
38 }