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 javax.xml.bind.annotation.XmlAccessType;
020    import javax.xml.bind.annotation.XmlAccessorType;
021    import javax.xml.bind.annotation.XmlAttribute;
022    import javax.xml.bind.annotation.XmlRootElement;
023    
024    import org.apache.camel.RuntimeCamelException;
025    import org.apache.camel.processor.loadbalancer.FailOverLoadBalancer;
026    import org.apache.camel.processor.loadbalancer.LoadBalancer;
027    import org.apache.camel.spi.RouteContext;
028    import org.apache.camel.util.ObjectHelper;
029    
030    @XmlRootElement(name = "failOver")
031    @XmlAccessorType(XmlAccessType.FIELD)
032    public class FailOverLoadBalanceStrategy extends LoadBalancerDefinition {    
033        @XmlAttribute
034        private String failedException;
035        
036        @Override
037        protected LoadBalancer createLoadBalancer(RouteContext routeContext) {
038            if (ObjectHelper.isNotEmpty(failedException)) {
039                Class failExceptionClazz = ObjectHelper.loadClass(failedException);
040                if (failExceptionClazz == null) {
041                    throw new RuntimeCamelException("Cannot find failException: " + failedException + " to be used with this FailOverLoadBalancer");
042                }
043                return new FailOverLoadBalancer(failExceptionClazz);
044            } else {
045                return new FailOverLoadBalancer();
046            }
047        }
048        
049        public void setFailedException(String exceptionName) {
050            failedException = exceptionName;
051        }
052        
053        public String getFailedException() {
054            return failedException;
055        }
056    
057    
058    }