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.model.loadbalancer;
018
019 import java.util.ArrayList;
020 import java.util.List;
021 import javax.xml.bind.annotation.XmlAccessType;
022 import javax.xml.bind.annotation.XmlAccessorType;
023 import javax.xml.bind.annotation.XmlElement;
024 import javax.xml.bind.annotation.XmlRootElement;
025
026 import org.apache.camel.model.LoadBalancerDefinition;
027 import org.apache.camel.processor.loadbalancer.FailOverLoadBalancer;
028 import org.apache.camel.processor.loadbalancer.LoadBalancer;
029 import org.apache.camel.spi.RouteContext;
030
031 @XmlRootElement(name = "failover")
032 @XmlAccessorType(XmlAccessType.FIELD)
033 public class FailoverLoadBalancerDefinition extends LoadBalancerDefinition {
034
035 @XmlElement(name = "exception")
036 private List<String> exceptions = new ArrayList<String>();
037
038 @Override
039 protected LoadBalancer createLoadBalancer(RouteContext routeContext) {
040 if (!exceptions.isEmpty()) {
041 List<Class> classes = new ArrayList<Class>();
042 for (String name : exceptions) {
043 Class type = routeContext.getCamelContext().getClassResolver().resolveClass(name);
044 if (type == null) {
045 throw new IllegalArgumentException("Cannot find class: " + name + " in the classpath");
046 }
047 classes.add(type);
048 }
049 return new FailOverLoadBalancer(classes);
050 } else {
051 return new FailOverLoadBalancer();
052 }
053 }
054
055 public List<String> getExceptions() {
056 return exceptions;
057 }
058
059 public void setExceptions(List<String> exceptions) {
060 this.exceptions = exceptions;
061 }
062
063 @Override
064 public String toString() {
065 return "FailoverLoadBalancer";
066 }
067 }