mirror of https://github.com/apache/cloudstack.git
90 lines
3.0 KiB
Java
90 lines
3.0 KiB
Java
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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package com.cloud.consoleproxy;
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import java.util.ArrayList;
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import java.util.Comparator;
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import java.util.List;
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import java.util.Map;
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import java.util.Random;
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import javax.ejb.Local;
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import javax.naming.ConfigurationException;
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import com.cloud.utils.component.AdapterBase;
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import com.cloud.vm.ConsoleProxyVO;
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import edu.emory.mathcs.backport.java.util.Collections;
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@Local(value={ConsoleProxyAllocator.class})
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public class ConsoleProxyBalanceAllocator extends AdapterBase implements ConsoleProxyAllocator {
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private final Random _rand = new Random(System.currentTimeMillis());
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@Override
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public ConsoleProxyVO allocProxy(List<ConsoleProxyVO> candidates, final Map<Long, Integer> loadInfo, long dataCenterId) {
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if(candidates != null) {
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List<ConsoleProxyVO> allocationList = new ArrayList<ConsoleProxyVO>();
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for(ConsoleProxyVO proxy : candidates) {
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allocationList.add(proxy);
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}
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Collections.sort(candidates, new Comparator<ConsoleProxyVO> () {
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@Override
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public int compare(ConsoleProxyVO x, ConsoleProxyVO y) {
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Integer loadOfX = loadInfo.get(x.getId());
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Integer loadOfY = loadInfo.get(y.getId());
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if(loadOfX != null && loadOfY != null) {
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if(loadOfX < loadOfY)
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return -1;
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else if(loadOfX > loadOfY)
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return 1;
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return 0;
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} else if(loadOfX == null && loadOfY == null) {
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return 0;
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} else {
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if(loadOfX == null)
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return -1;
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return 1;
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}
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}
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});
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if(allocationList.size() > 0)
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return allocationList.get(0);
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}
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return null;
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}
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@Override
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public boolean configure(String name, Map<String, Object> params) throws ConfigurationException {
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return true;
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}
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@Override
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public boolean start() {
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return true;
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}
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@Override
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public boolean stop() {
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return true;
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}
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}
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