| /** |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.camel.processor.loadbalancer; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| public abstract class WeightedLoadBalancer extends QueueLoadBalancer { |
| private List<Integer> distributionRatioList = new ArrayList<Integer>(); |
| private ArrayList<DistributionRatio> runtimeRatios = new ArrayList<DistributionRatio>(); |
| |
| public WeightedLoadBalancer(List<Integer> distributionRatios) { |
| deepCloneDistributionRatios(distributionRatios); |
| loadRuntimeRatios(distributionRatios); |
| } |
| |
| protected void deepCloneDistributionRatios(List<Integer> distributionRatios) { |
| for (Integer value : distributionRatios) { |
| this.distributionRatioList.add(value); |
| } |
| } |
| |
| |
| @Override |
| protected void doStart() throws Exception { |
| super.doStart(); |
| if (getProcessors().size() != getDistributionRatioList().size()) { |
| throw new IllegalArgumentException("Loadbalacing with " + getProcessors().size() |
| + " should match number of distributions " + getDistributionRatioList().size()); |
| } |
| } |
| |
| protected void loadRuntimeRatios(List<Integer> distributionRatios) { |
| int position = 0; |
| |
| for (Integer value : distributionRatios) { |
| runtimeRatios.add(new DistributionRatio(position++, value.intValue())); |
| } |
| } |
| |
| protected boolean isRuntimeRatiosZeroed() { |
| boolean cleared = true; |
| |
| for (DistributionRatio runtimeRatio : runtimeRatios) { |
| if (runtimeRatio.getRuntimeWeight() > 0) { |
| cleared = false; |
| } |
| } |
| return cleared; |
| } |
| |
| protected void resetRuntimeRatios() { |
| for (DistributionRatio runtimeRatio : runtimeRatios) { |
| runtimeRatio.setRuntimeWeight(runtimeRatio.getDistributionWeight()); |
| } |
| } |
| |
| public List<Integer> getDistributionRatioList() { |
| return distributionRatioList; |
| } |
| |
| public void setDistributionRatioList(List<Integer> distributionRatioList) { |
| this.distributionRatioList = distributionRatioList; |
| } |
| |
| public ArrayList<DistributionRatio> getRuntimeRatios() { |
| return runtimeRatios; |
| } |
| |
| public void setRuntimeRatios(ArrayList<DistributionRatio> runtimeRatios) { |
| this.runtimeRatios = runtimeRatios; |
| } |
| |
| } |