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}