// 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.storage.secondary;

import java.util.List;
import java.util.Map;
import java.util.Random;

import javax.ejb.Local;
import javax.naming.ConfigurationException;

import com.cloud.vm.SecondaryStorageVmVO;

@Local(value={SecondaryStorageVmAllocator.class})
public class SecondaryStorageVmDefaultAllocator implements SecondaryStorageVmAllocator {
	
    private String _name;
    private Random _rand = new Random(System.currentTimeMillis());

    @Override
	public SecondaryStorageVmVO allocSecondaryStorageVm(List<SecondaryStorageVmVO> candidates, Map<Long, Integer> loadInfo, long dataCenterId) {
    	if(candidates.size() > 0)
			return candidates.get(_rand.nextInt(candidates.size()));
    	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.");
        }
               */
        
        return true;
    }
	
    @Override
    public String getName() {
        return _name;
    }

    @Override
    public boolean start() {
        return true;
    }

    @Override
    public boolean stop() {
        return true;
    }
}