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