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