sandbox-apis/virtualbox/src/main/java/org/jclouds/virtualbox/functions/admin/StartVBoxIfNotAlreadyRunning.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.admin;

import static com.google.common.base.Preconditions.checkNotNull;
import static com.google.common.base.Preconditions.checkState;
import static org.jclouds.compute.options.RunScriptOptions.Builder.runAsRoot;

import java.net.URI;

import javax.annotation.Resource;
import javax.inject.Named;

import org.jclouds.compute.ComputeService;
import org.jclouds.compute.reference.ComputeServiceConstants;
import org.jclouds.domain.Credentials;
import org.jclouds.logging.Logger;
import org.jclouds.net.IPSocket;
import org.virtualbox_4_1.VirtualBoxManager;

import com.google.common.base.Function;
import com.google.common.base.Predicate;

public class StartVBoxIfNotAlreadyRunning implements Function<URI, VirtualBoxManager> {

   @Resource
   @Named(ComputeServiceConstants.COMPUTE_LOGGER)
   protected Logger logger = Logger.NULL;

   private final ComputeService compute;
   private final VirtualBoxManager manager;
   private final Predicate<IPSocket> socketTester;
   private final String hostId;
   private final Credentials credentials;

   public StartVBoxIfNotAlreadyRunning(ComputeService compute, VirtualBoxManager manager,
         Predicate<IPSocket> socketTester, String hostId, Credentials credentials) {
      this.compute = checkNotNull(compute, "compute");
      this.manager = checkNotNull(manager, "manager");
      this.socketTester = checkNotNull(socketTester, "socketTester");
      this.hostId = checkNotNull(hostId, "hostId");
      this.credentials = checkNotNull(credentials, "credentials");
   }

   @Override
   public VirtualBoxManager apply(URI endpoint) {
      checkState(compute.getNodeMetadata(hostId) != null, "compute service %s cannot locate node with id %s", compute,
            hostId);
      checkNotNull(endpoint, "endpoint to virtualbox websrvd is needed");

      if (socketTester.apply(new IPSocket(endpoint.getHost(), endpoint.getPort()))) {
         manager.connect(endpoint.toASCIIString(), credentials.identity, credentials.credential);
         return manager;
      }

      logger.debug("disabling password access");
      compute.runScriptOnNode(hostId, "VBoxManage setproperty websrvauthlibrary null", runAsRoot(false)
            .wrapInInitScript(false));
      logger.debug("starting vboxwebsrv");
      String vboxwebsrv = "vboxwebsrv -t 10000 -v -b";
      if (isOSX(hostId))
         vboxwebsrv = "cd /Applications/VirtualBox.app/Contents/MacOS/ && " + vboxwebsrv;

      compute.runScriptOnNode(hostId, vboxwebsrv, runAsRoot(false).wrapInInitScript(false).blockOnComplete(false)
            .nameTask("vboxwebsrv"));

      manager.connect(endpoint.toASCIIString(), credentials.identity, credentials.credential);
      return manager;
   }

   private boolean isOSX(String hostId) {
      return compute.getNodeMetadata(hostId).getOperatingSystem().getDescription().equals("Mac OS X");
   }

}