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.reifier.loadbalancer;
018
019import java.util.ArrayList;
020import java.util.List;
021
022import org.apache.camel.RuntimeCamelException;
023import org.apache.camel.model.LoadBalancerDefinition;
024import org.apache.camel.model.loadbalancer.WeightedLoadBalancerDefinition;
025import org.apache.camel.processor.loadbalancer.LoadBalancer;
026import org.apache.camel.processor.loadbalancer.WeightedLoadBalancer;
027import org.apache.camel.processor.loadbalancer.WeightedRandomLoadBalancer;
028import org.apache.camel.processor.loadbalancer.WeightedRoundRobinLoadBalancer;
029import org.apache.camel.spi.RouteContext;
030
031public class WeightedLoadBalancerReifier extends LoadBalancerReifier<WeightedLoadBalancerDefinition> {
032
033    public WeightedLoadBalancerReifier(LoadBalancerDefinition definition) {
034        super((WeightedLoadBalancerDefinition)definition);
035    }
036
037    @Override
038    public LoadBalancer createLoadBalancer(RouteContext routeContext) {
039        WeightedLoadBalancer loadBalancer;
040        List<Integer> distributionRatioList = new ArrayList<>();
041
042        try {
043            String[] ratios = definition.getDistributionRatio().split(definition.getDistributionRatioDelimiter());
044            for (String ratio : ratios) {
045                distributionRatioList.add(Integer.parseInt(ratio.trim()));
046            }
047
048            boolean isRoundRobin = definition.getRoundRobin() != null && definition.getRoundRobin();
049            if (isRoundRobin) {
050                loadBalancer = new WeightedRoundRobinLoadBalancer(distributionRatioList);
051            } else {
052                loadBalancer = new WeightedRandomLoadBalancer(distributionRatioList);
053            }
054        } catch (Exception e) {
055            throw RuntimeCamelException.wrapRuntimeCamelException(e);
056        }
057
058        return loadBalancer;
059    }
060
061}