001 /* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 018 package org.apache.commons.pipeline.testFramework; 019 020 import org.apache.commons.logging.Log; 021 import org.apache.commons.logging.LogFactory; 022 import org.apache.commons.pipeline.*; 023 import org.apache.commons.pipeline.validation.ConsumedTypes; 024 import org.apache.commons.pipeline.validation.ProducesConsumed; 025 026 /** 027 * This stage will generate {@link StageException}s for every other object this 028 * stage processes. By design, the even numbered objects will cause a <CODE>StageException</CODE> 029 * to be thrown (counting the first object as 1). 030 */ 031 @ConsumedTypes(Object.class) 032 @ProducesConsumed 033 public class FaultingTestStage extends TestStage { 034 private Log log = LogFactory.getLog(FaultingTestStage.class); 035 private int counter = 0; 036 037 public FaultingTestStage(int index) { 038 super(index); 039 } 040 041 public void process(Object obj) throws StageException { 042 if (++counter % 2 == 0) { 043 log.error("Planned fault in stage " + this + "."); 044 throw new StageException(this, "Planned fault in stage " + super.getIndex() + "."); 045 } 046 047 super.process(obj); 048 } 049 }