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}