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.spi; 018 019 import org.apache.camel.Component; 020 import org.apache.camel.Exchange; 021 import org.apache.camel.Processor; 022 023 /** 024 * Provides a hook for custom {@link Processor} or {@link Component} instances to respond to 025 * completed or failed processing of an {@link Exchange} rather like Spring's 026 * <a href="http://static.springframework.org/spring/docs/2.5.x/api/org/springframework/transaction/ 027 * support/TransactionSynchronization.html">TransactionSynchronization</a> 028 * 029 * @version $Revision: 52393 $ 030 */ 031 public interface Synchronization { 032 033 /** 034 * Called when the processing of the message exchange is complete 035 * 036 * @param exchange the exchange being processed 037 */ 038 void onComplete(Exchange exchange); 039 040 /** 041 * Called when the processing of the message exchange has failed for some reason. 042 * The exception which caused the problem is in {@link Exchange#getException()} and 043 * there could be a fault message via {@link Exchange#getFault()} 044 * 045 * @param exchange the exchange being processed 046 */ 047 void onFailure(Exchange exchange); 048 }