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
022 import javax.xml.bind.annotation.XmlAccessType;
023 import javax.xml.bind.annotation.XmlAccessorType;
024 import javax.xml.bind.annotation.XmlAttribute;
025 import javax.xml.bind.annotation.XmlElement;
026 import javax.xml.bind.annotation.XmlElementWrapper;
027 import javax.xml.bind.annotation.XmlRootElement;
028
029 import org.apache.camel.model.LoadBalancerDefinition;
030 import org.apache.camel.processor.loadbalancer.LoadBalancer;
031 import org.apache.camel.processor.loadbalancer.WeightedLoadBalancer;
032 import org.apache.camel.processor.loadbalancer.WeightedRandomLoadBalancer;
033 import org.apache.camel.processor.loadbalancer.WeightedRoundRobinLoadBalancer;
034 import org.apache.camel.spi.RouteContext;
035
036 /**
037 * Represents an XML <weighted/> element
038 */
039 @XmlRootElement(name = "weighted")
040 @XmlAccessorType(XmlAccessType.FIELD)
041 public class WeightedLoadBalancerDefinition extends LoadBalancerDefinition {
042
043 @XmlAttribute(name = "roundRobin", required = false)
044 private Boolean roundRobin = Boolean.FALSE;
045
046 @XmlAttribute(name = "distributionRatio", required = true)
047 private String distributionRatio;
048
049 @XmlAttribute(name = "distributionRatioDelimiter", required = false)
050 private String distributionRatioDelimiter;
051
052 @Override
053 protected LoadBalancer createLoadBalancer(RouteContext routeContext) {
054 WeightedLoadBalancer loadBalancer = null;
055 List<Integer> distributionRatioList = new ArrayList<Integer>();
056
057 try {
058 if (distributionRatioDelimiter == null) {
059 distributionRatioDelimiter = ",";
060 }
061
062 String[] ratios = distributionRatio.split(distributionRatioDelimiter);
063 for (String ratio : ratios) {
064 distributionRatioList.add(new Integer(ratio.trim()));
065 }
066
067 if (!roundRobin) {
068 loadBalancer = new WeightedRandomLoadBalancer(distributionRatioList);
069 } else {
070 loadBalancer = new WeightedRoundRobinLoadBalancer(distributionRatioList);
071 }
072 } catch (Exception e) {
073
074 }
075 return loadBalancer;
076 }
077
078 public Boolean isRoundRobin() {
079 return roundRobin;
080 }
081
082 public void setRoundRobin(Boolean roundRobin) {
083 this.roundRobin = roundRobin;
084 }
085
086 public String getDistributionRatio() {
087 return distributionRatio;
088 }
089
090 public void setDistributionRatioList(String distributionRatio) {
091 this.distributionRatio = distributionRatio;
092 }
093
094 @Override
095 public String toString() {
096 if (!roundRobin) {
097 return "WeightedRandomLoadBalancer[" + distributionRatio + "]";
098 } else {
099 return "WeightedRoundRobinLoadBalancer[" + distributionRatio + "]";
100 }
101 }
102 }