sandbox-apis/virtualbox/src/main/java/org/jclouds/virtualbox/functions/CreateAndRegisterMachineFromIsoIfNotAlreadyExists.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 com.google.common.base.Function;
import org.jclouds.virtualbox.domain.VmSpec;
import org.virtualbox_4_1.IMachine;
import org.virtualbox_4_1.IVirtualBox;
import org.virtualbox_4_1.VBoxException;
import org.virtualbox_4_1.VirtualBoxManager;

import javax.annotation.Nullable;

/**
 * @author Mattias Holmqvist
 */
public class CreateAndRegisterMachineFromIsoIfNotAlreadyExists implements Function<VmSpec, IMachine> {

   private VirtualBoxManager manager;

   public CreateAndRegisterMachineFromIsoIfNotAlreadyExists(VirtualBoxManager manager) {
      this.manager = manager;
   }

   @Override
   public IMachine apply(@Nullable VmSpec launchSpecification) {
      final IVirtualBox vBox = manager.getVBox();
      String vmName = launchSpecification.getVmName();
      try {
         vBox.findMachine(vmName);
         throw new IllegalStateException("Machine " + vmName + " is already registered.");
      } catch (VBoxException e) {
         if (machineNotFoundException(e))
            return createMachine(vBox, launchSpecification);
         else
            throw e;
      }
   }

   private boolean machineNotFoundException(VBoxException e) {
      return e.getMessage().contains("VirtualBox error: Could not find a registered machine named ");
   }

   private IMachine createMachine(IVirtualBox vBox, VmSpec launchSpecification) {
      // TODO: add support for settingsfile
      String settingsFile1 = null;
      IMachine newMachine = vBox.createMachine(settingsFile1, launchSpecification.getVmName(),
              launchSpecification.getOsTypeId(), launchSpecification.getVmId(), launchSpecification.isForceOverwrite());
      manager.getVBox().registerMachine(newMachine);
      return newMachine;
   }
}