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.processor.loadbalancer;
018
019import org.apache.camel.AsyncCallback;
020import org.apache.camel.Exchange;
021
022/**
023 * A default base class for a {@link LoadBalancer} implementation.
024 * <p/>
025 * This implementation is dedicated for simple synchronous load balancers.
026 * <p/>
027 * Consider using the {@link LoadBalancerSupport} if you want to support
028 * the asynchronous routing engine in Camel.
029 *
030 * @version 
031 */
032public abstract class SimpleLoadBalancerSupport extends LoadBalancerSupport {
033
034    public boolean process(Exchange exchange, AsyncCallback callback) {
035        try {
036            process(exchange);
037        } catch (Exception e) {
038            exchange.setException(e);
039        }
040        callback.done(true);
041        return true;
042    }
043
044    public abstract void process(Exchange exchange) throws Exception;
045}