mirror of https://github.com/apache/cloudstack.git
103 lines
3.2 KiB
Java
103 lines
3.2 KiB
Java
// Copyright 2012 Citrix Systems, Inc. Licensed under the
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// Apache License, Version 2.0 (the "License"); you may not use this
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// file except in compliance with the License. Citrix Systems, Inc.
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// reserves all rights not expressly granted by the License.
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// You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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// Automatically generated by addcopyright.py at 04/02/2012
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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.configuration.dao.ConfigurationDao;
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import com.cloud.utils.NumbersUtil;
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import com.cloud.utils.component.ComponentLocator;
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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 implements ConsoleProxyAllocator {
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private String _name;
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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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_name = name;
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ComponentLocator locator = ComponentLocator.getCurrentLocator();
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ConfigurationDao configDao = locator.getDao(ConfigurationDao.class);
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if (configDao == null) {
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throw new ConfigurationException("Unable to get the configuration dao.");
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}
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Map<String, String> configs = configDao.getConfiguration();
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return true;
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}
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@Override
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public String getName() {
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return _name;
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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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