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.processor.loadbalancer; 018 019 import org.apache.camel.AsyncCallback; 020 import 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 */ 032 public 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 }