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.servicemix.common;
018    
019    import javax.jbi.messaging.MessageExchange;
020    import javax.transaction.Status;
021    
022    import org.apache.servicemix.MessageExchangeListener;
023    
024    /**
025     * Base class for life cycle management of components.
026     * This lifecycle uses Push delivery by implementing MessageExchangeListerner interface
027     * 
028     * @author Guillaume Nodet
029     * @version $Revision: 452064 $
030     * @since 3.0
031     */
032    public class BaseLifeCycle extends AsyncBaseLifeCycle implements MessageExchangeListener {
033    
034        protected BaseLifeCycle() {
035        }
036        
037        public BaseLifeCycle(ServiceMixComponent component) {
038            super(component);
039        }
040        
041        /* (non-Javadoc)
042         * @see org.apache.servicemix.common.AsyncBaseLifeCycle#onMessageExchange(javax.jbi.messaging.MessageExchange)
043         */
044        public void onMessageExchange(MessageExchange exchange) {
045            try {
046                processExchange(exchange);
047            } catch (Exception e) {
048                logger.error("Error processing exchange " + exchange, e);
049                try {
050                    // If we are transacted and this is a runtime exception
051                    // try to mark transaction as rollback
052                    if (transactionManager != null && 
053                        transactionManager.getStatus() == Status.STATUS_ACTIVE && 
054                        exceptionShouldRollbackTx(e)) {
055                        transactionManager.setRollbackOnly();
056                    }
057                    exchange.setError(e);
058                    channel.send(exchange);
059                } catch (Exception inner) {
060                    logger.error("Error setting exchange status to ERROR", inner);
061                }
062            }
063        }
064        
065    }