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.testFramework;
19
20 import org.apache.commons.logging.Log;
21 import org.apache.commons.logging.LogFactory;
22 import org.apache.commons.pipeline.*;
23 import org.apache.commons.pipeline.validation.ConsumedTypes;
24 import org.apache.commons.pipeline.validation.ProducesConsumed;
25
26 /**
27 * This stage will generate {@link StageException}s for every other object this
28 * stage processes. By design, the even numbered objects will cause a <CODE>StageException</CODE>
29 * to be thrown (counting the first object as 1).
30 */
31 @ConsumedTypes(Object.class)
32 @ProducesConsumed
33 public class FaultingTestStage extends TestStage {
34 private Log log = LogFactory.getLog(FaultingTestStage.class);
35 private int counter = 0;
36
37 public FaultingTestStage(int index) {
38 super(index);
39 }
40
41 public void process(Object obj) throws StageException {
42 if (++counter % 2 == 0) {
43 log.error("Planned fault in stage " + this + ".");
44 throw new StageException(this, "Planned fault in stage " + super.getIndex() + ".");
45 }
46
47 super.process(obj);
48 }
49 }