// 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.agent.manager.allocator.impl;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import javax.ejb.Local;

import com.cloud.agent.manager.allocator.HostAllocator;
import com.cloud.deploy.DeploymentPlan;
import com.cloud.deploy.DeploymentPlanner.ExcludeList;
import com.cloud.host.Host;
import com.cloud.host.Host.Type;
import com.cloud.host.dao.HostDao;
import com.cloud.offering.ServiceOffering;
import com.cloud.utils.component.ComponentLocator;
import com.cloud.vm.VirtualMachine;
import com.cloud.vm.VirtualMachineProfile;

/**
 * @author ahuang
 *
 */
@Local(value={HostAllocator.class})
public class TestingAllocator implements HostAllocator {
    HostDao _hostDao;
    Long _computingHost;
    Long _storageHost;
    Long _routingHost;
    String _name;

    @Override
    public List<Host> allocateTo(VirtualMachineProfile<? extends VirtualMachine> vmProfile, DeploymentPlan plan, Type type,
            ExcludeList avoid, int returnUpTo) {
        return allocateTo(vmProfile, plan, type, avoid, returnUpTo, true);
    }
    
    @Override
    public List<Host> allocateTo(VirtualMachineProfile<? extends VirtualMachine> vmProfile, DeploymentPlan plan, Type type,
			ExcludeList avoid, int returnUpTo, boolean considerReservedCapacity) {
    	List<Host> availableHosts = new ArrayList<Host>();
    	Host host = null;    	
        if (type == Host.Type.Routing && _routingHost != null) {
        	host = _hostDao.findById(_routingHost);
        } else if (type == Host.Type.Storage && _storageHost != null) {
        	host = _hostDao.findById(_storageHost);
        }
        if(host != null){
        	availableHosts.add(host);
        }
        return availableHosts;
    }

    @Override
    public boolean isVirtualMachineUpgradable(VirtualMachine vm, ServiceOffering offering) {
        // currently we do no special checks to rule out a VM being upgradable to an offering, so
        // return true
        return true;
    }

    @Override
    public boolean configure(String name, Map<String, Object> params) {
        String value = (String)params.get(Host.Type.Routing.toString());
        _routingHost = (value != null) ? Long.parseLong(value) : null;

        value = (String)params.get(Host.Type.Storage.toString());
        _storageHost = (value != null) ? Long.parseLong(value) : null;
        
        ComponentLocator _locator = ComponentLocator.getCurrentLocator();
        _hostDao = _locator.getDao(HostDao.class);
        
        _name = name;
        
        return true;
    }

    @Override
    public String getName() {
        return _name;
    }

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

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

}