labs/virtualbox/src/main/java/org/jclouds/virtualbox/functions/AttachNicToMachine.java

/**
 * Licensed to jclouds, Inc. (jclouds) under one or more
 * contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  jclouds licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with 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.
 */
package org.jclouds.virtualbox.functions;

import static com.google.common.base.Preconditions.checkNotNull;

import javax.annotation.Nullable;

import org.jclouds.virtualbox.domain.NetworkInterfaceCard;
import org.jclouds.virtualbox.util.MachineUtils;
import org.virtualbox_4_1.NetworkAttachmentType;

import com.google.common.base.Function;

/**
 * @author Andrea Turli
 */
public class AttachNicToMachine implements Function<NetworkInterfaceCard, Void> {

	private final String vmName;
	   private final MachineUtils machineUtils;


	public AttachNicToMachine(String vmName, MachineUtils machineUtils) {
		this.vmName = checkNotNull(vmName, "vmName");
		this.machineUtils = checkNotNull(machineUtils, "machineUtils");
	}

	@Override
   public Void apply(@Nullable NetworkInterfaceCard nic) {
	  if(hasNatAdapter(nic)) {
		  return machineUtils.writeLockMachineAndApply(vmName, new AttachNATAdapterToMachineIfNotAlreadyExists(nic));

	  } else if (hasBridgedAdapter(nic)) {
		  return machineUtils.writeLockMachineAndApply(vmName, new AttachBridgedAdapterToMachine(nic));
      } else if (hasHostOnlyAdapter(nic)) {
         return machineUtils.writeLockMachineAndApply(vmName, new AttachHostOnlyAdapter(nic));
	  } else
		  return null;
	}

	private boolean hasNatAdapter(NetworkInterfaceCard nic) {
		return nic.getNetworkAdapter().getNetworkAttachmentType()
				.equals(NetworkAttachmentType.NAT);
	}
	
	private boolean hasBridgedAdapter(NetworkInterfaceCard nic) {
		return nic.getNetworkAdapter().getNetworkAttachmentType()
				.equals(NetworkAttachmentType.Bridged);
   }
	
   private boolean hasHostOnlyAdapter(NetworkInterfaceCard nic) {
      return nic.getNetworkAdapter().getNetworkAttachmentType().equals(NetworkAttachmentType.HostOnly);
   }
}