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 */ 017package org.apache.camel.processor; 018 019import org.apache.camel.AsyncCallback; 020import org.apache.camel.AsyncProcessor; 021import org.apache.camel.Exchange; 022import org.apache.camel.RollbackExchangeException; 023import org.apache.camel.Traceable; 024import org.apache.camel.support.ServiceSupport; 025import org.apache.camel.util.AsyncProcessorHelper; 026 027/** 028 * Processor for marking an {@link org.apache.camel.Exchange} to rollback. 029 * 030 * @version 031 */ 032public class RollbackProcessor extends ServiceSupport implements AsyncProcessor, Traceable { 033 034 private boolean markRollbackOnly; 035 private boolean markRollbackOnlyLast; 036 private String message; 037 038 public RollbackProcessor() { 039 } 040 041 public RollbackProcessor(String message) { 042 this.message = message; 043 } 044 045 public void process(Exchange exchange) throws Exception { 046 AsyncProcessorHelper.process(this, exchange); 047 } 048 049 public boolean process(Exchange exchange, AsyncCallback callback) { 050 if (isMarkRollbackOnlyLast()) { 051 // only mark the last route (current) as rollback 052 // this is needed when you have multiple transactions in play 053 exchange.setProperty(Exchange.ROLLBACK_ONLY_LAST, Boolean.TRUE); 054 } else { 055 // default to mark the entire route as rollback 056 exchange.setProperty(Exchange.ROLLBACK_ONLY, Boolean.TRUE); 057 } 058 059 if (markRollbackOnly || markRollbackOnlyLast) { 060 // do not do anything more as we should only mark the rollback 061 callback.done(true); 062 return true; 063 } 064 065 // throw exception to rollback 066 if (message != null) { 067 exchange.setException(new RollbackExchangeException(message, exchange)); 068 } else { 069 exchange.setException(new RollbackExchangeException(exchange)); 070 } 071 072 callback.done(true); 073 return true; 074 } 075 076 @Override 077 public String toString() { 078 if (message != null) { 079 return "Rollback[" + message + "]"; 080 } else { 081 return "Rollback"; 082 } 083 } 084 085 public String getTraceLabel() { 086 return "rollback"; 087 } 088 089 public boolean isMarkRollbackOnly() { 090 return markRollbackOnly; 091 } 092 093 public void setMarkRollbackOnly(boolean markRollbackOnly) { 094 this.markRollbackOnly = markRollbackOnly; 095 } 096 097 public boolean isMarkRollbackOnlyLast() { 098 return markRollbackOnlyLast; 099 } 100 101 public void setMarkRollbackOnlyLast(boolean markRollbackOnlyLast) { 102 this.markRollbackOnlyLast = markRollbackOnlyLast; 103 } 104 105 @Override 106 protected void doStart() throws Exception { 107 // noop 108 } 109 110 @Override 111 protected void doStop() throws Exception { 112 // noop 113 } 114}