// Copyright 2012 Citrix Systems, Inc. Licensed under the
// Apache License, Version 2.0 (the "License"); you may not use this
// file except in compliance with the License. Citrix Systems, Inc.
// reserves all rights not expressly granted by 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.
//
// Automatically generated by addcopyright.py at 04/03/2012
package com.cloud.consoleproxy;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.List;
import java.util.Map;
import java.util.Random;
import javax.ejb.Local;
import javax.naming.ConfigurationException;
import com.cloud.configuration.dao.ConfigurationDao;
import com.cloud.utils.NumbersUtil;
import com.cloud.utils.component.ComponentLocator;
import com.cloud.vm.ConsoleProxyVO;
import edu.emory.mathcs.backport.java.util.Collections;
@Local(value={ConsoleProxyAllocator.class})
public class ConsoleProxyBalanceAllocator implements ConsoleProxyAllocator {
private String _name;
private final Random _rand = new Random(System.currentTimeMillis());
@Override
public ConsoleProxyVO allocProxy(List<ConsoleProxyVO> candidates, final Map<Long, Integer> loadInfo, long dataCenterId) {
if(candidates != null) {
List<ConsoleProxyVO> allocationList = new ArrayList<ConsoleProxyVO>();
for(ConsoleProxyVO proxy : candidates) {
allocationList.add(proxy);
}
Collections.sort(candidates, new Comparator<ConsoleProxyVO> () {
@Override
public int compare(ConsoleProxyVO x, ConsoleProxyVO y) {
Integer loadOfX = loadInfo.get(x.getId());
Integer loadOfY = loadInfo.get(y.getId());
if(loadOfX != null && loadOfY != null) {
if(loadOfX < loadOfY)
return -1;
else if(loadOfX > loadOfY)
return 1;
return 0;
} else if(loadOfX == null && loadOfY == null) {
return 0;
} else {
if(loadOfX == null)
return -1;
return 1;
}
}
});
if(allocationList.size() > 0)
return allocationList.get(0);
}
return null;
}
@Override
public boolean configure(String name, Map<String, Object> params) throws ConfigurationException {
_name = name;
ComponentLocator locator = ComponentLocator.getCurrentLocator();
ConfigurationDao configDao = locator.getDao(ConfigurationDao.class);
if (configDao == null) {
throw new ConfigurationException("Unable to get the configuration dao.");
}
Map<String, String> configs = configDao.getConfiguration();
return true;
}
@Override
public String getName() {
return _name;
}
@Override
public boolean start() {
return true;
}
@Override
public boolean stop() {
return true;
}
}