/**
 * 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.elasticstack.predicates;

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

import javax.annotation.Resource;
import javax.inject.Inject;
import javax.inject.Singleton;

import org.jclouds.elasticstack.ElasticStackClient;
import org.jclouds.elasticstack.domain.DriveInfo;
import org.jclouds.logging.Logger;

import com.google.common.base.Predicate;

/**
 * 
 * @author Adrian Cole
 */
@Singleton
public class DriveClaimed implements Predicate<DriveInfo> {

   private final ElasticStackClient client;

   @Resource
   protected Logger logger = Logger.NULL;

   @Inject
   public DriveClaimed(ElasticStackClient client) {
      this.client = client;
   }

   public boolean apply(DriveInfo drive) {
      logger.trace("looking for claims on drive %s", checkNotNull(drive, "drive"));
      drive = refresh(drive);
      if (drive == null)
         return false;
      logger.trace("%s: looking for drive claims: currently: %s", drive.getUuid(), drive.getClaimed());
      return drive.getClaimed().size() > 0;
   }

   private DriveInfo refresh(DriveInfo drive) {
      return client.getDriveInfo(drive.getUuid());
   }
}