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; 018 019/** 020 * A <a href="http://camel.apache.org/processor.html">processor</a> is used to implement the 021 * <a href="http://camel.apache.org/event-driven-consumer.html"> Event Driven Consumer</a> 022 * and <a href="http://camel.apache.org/message-translator.html"> Message Translator</a> 023 * patterns and to process message exchanges. 024 * <p/> 025 * Notice if you use a {@link Processor} in a Camel route, then make sure to write the {@link Processor} 026 * in a thread-safe way, as the Camel routes can potentially be executed by concurrent threads, and therefore 027 * multiple threads can call the same {@link Processor} instance. 028 */ 029public interface Processor { 030 031 /** 032 * Processes the message exchange 033 * 034 * @param exchange the message exchange 035 * @throws Exception if an internal processing error has occurred. 036 */ 037 void process(Exchange exchange) throws Exception; 038}