server/src/com/cloud/network/element/ExternalDhcpElement.java

/**
 *  Copyright (C) 2011 Cloud.com, Inc.  All rights reserved.
 */

package com.cloud.network.element;

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

import javax.ejb.Local;

import org.apache.log4j.Logger;

import com.cloud.baremetal.ExternalDhcpManager;
import com.cloud.dc.DataCenter;
import com.cloud.dc.DataCenter.NetworkType;
import com.cloud.dc.Pod;
import com.cloud.deploy.DeployDestination;
import com.cloud.exception.ConcurrentOperationException;
import com.cloud.exception.InsufficientCapacityException;
import com.cloud.exception.ResourceUnavailableException;
import com.cloud.host.Host;
import com.cloud.hypervisor.Hypervisor.HypervisorType;
import com.cloud.network.Network;
import com.cloud.network.PublicIpAddress;
import com.cloud.network.Network.Capability;
import com.cloud.network.Network.GuestIpType;
import com.cloud.network.Network.Provider;
import com.cloud.network.Network.Service;
import com.cloud.network.Networks.TrafficType;
import com.cloud.network.rules.FirewallRule;
import com.cloud.network.rules.StaticNat;
import com.cloud.network.vpn.PasswordResetElement;
import com.cloud.offering.NetworkOffering;
import com.cloud.utils.component.AdapterBase;
import com.cloud.utils.component.Inject;
import com.cloud.utils.exception.CloudRuntimeException;
import com.cloud.vm.NicProfile;
import com.cloud.vm.ReservationContext;
import com.cloud.vm.VirtualMachine;
import com.cloud.vm.VirtualMachineProfile;

@Local(value=NetworkElement.class)
public class ExternalDhcpElement extends AdapterBase implements NetworkElement, PasswordResetElement {
	private static final Logger s_logger = Logger.getLogger(ExternalDhcpElement.class);
	@Inject ExternalDhcpManager _dhcpMgr;
	private boolean canHandle(GuestIpType ipType, DeployDestination dest, TrafficType trafficType) {
		DataCenter dc = dest.getDataCenter();
		Pod pod = dest.getPod();
		
		if (pod.getExternalDhcp() && dc.getNetworkType() == NetworkType.Basic && trafficType == TrafficType.Guest
				&& ipType == GuestIpType.Direct) {
			s_logger.debug("External DHCP can handle");
			return true;
		}

		return false;
	}

	@Override
	public boolean savePassword(Network network, NicProfile nic, VirtualMachineProfile<? extends VirtualMachine> vm) throws ResourceUnavailableException {
		return true;
	}

	@Override
	public Map<Service, Map<Capability, String>> getCapabilities() {
		return null;
	}

	@Override
	public Provider getProvider() {
		return Provider.ExternalDhcpServer;
	}

	@Override
	public boolean implement(Network network, NetworkOffering offering, DeployDestination dest, ReservationContext context)
			throws ConcurrentOperationException, ResourceUnavailableException, InsufficientCapacityException {
		if (!canHandle(network.getGuestType(), dest, offering.getTrafficType())) {
			return false;
		}
		return true;
	}

	@Override
	public boolean prepare(Network network, NicProfile nic, VirtualMachineProfile<? extends VirtualMachine> vm, DeployDestination dest,
			ReservationContext context) throws ConcurrentOperationException, ResourceUnavailableException, InsufficientCapacityException {
		Host host = dest.getHost();
		if (host.getHypervisorType() == HypervisorType.BareMetal || !canHandle(network.getGuestType(), dest, network.getTrafficType())) {
			//BareMetalElement or DhcpElement handle this
			return false;
		}
		
		return _dhcpMgr.addVirtualMachineIntoNetwork(network, nic, vm, dest, context);
	}

	@Override
	public boolean release(Network network, NicProfile nic, VirtualMachineProfile<? extends VirtualMachine> vm, ReservationContext context)
			throws ConcurrentOperationException, ResourceUnavailableException {
		return true;
	}

	@Override
	public boolean shutdown(Network network, ReservationContext context) throws ConcurrentOperationException, ResourceUnavailableException {
		return true;
	}

	@Override
	public boolean restart(Network network, ReservationContext context, boolean cleanup) throws ConcurrentOperationException, ResourceUnavailableException,
			InsufficientCapacityException {
		return true;
	}

	@Override
	public boolean destroy(Network network) throws ConcurrentOperationException, ResourceUnavailableException {
		return true;
	}

	@Override
	public boolean applyIps(Network network, List<? extends PublicIpAddress> ipAddress) throws ResourceUnavailableException {
		return true;
	}

	@Override
	public boolean applyRules(Network network, List<? extends FirewallRule> rules) throws ResourceUnavailableException {
		return true;
	}
	
    @Override
    public boolean applyStaticNats(Network config, List<? extends StaticNat> rules) throws ResourceUnavailableException {
        return false;
    }

}