org.jclouds.openstack.nova.compute.suppliers.NovaHardwareSupplier Maven / Gradle / Ivy

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jclouds components to access an implementation of OpenStack Nova

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/**
 * 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.openstack.nova.compute.suppliers;

import static org.jclouds.openstack.nova.options.ListOptions.Builder.withDetails;

import java.util.Set;

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

import org.jclouds.compute.domain.Hardware;
import org.jclouds.compute.reference.ComputeServiceConstants;
import org.jclouds.logging.Logger;
import org.jclouds.openstack.nova.NovaClient;
import org.jclouds.openstack.nova.domain.Flavor;

import com.google.common.base.Function;
import com.google.common.base.Supplier;
import com.google.common.collect.Iterables;
import com.google.common.collect.Sets;

/**
 * 
 * @author Adrian Cole
 */
@Singleton
public class NovaHardwareSupplier implements Supplier> {
   @Resource
   @Named(ComputeServiceConstants.COMPUTE_LOGGER)
   protected Logger logger = Logger.NULL;
   private final NovaClient sync;
   private final Function flavorToHardware;

   @Inject
   NovaHardwareSupplier(NovaClient sync, Function flavorToHardware) {
      this.sync = sync;
      this.flavorToHardware = flavorToHardware;
   }

   @Override
   public Set get() {
      final Set hardware;
      logger.debug(">> providing hardware");
      hardware = Sets.newLinkedHashSet(Iterables.transform(sync.listFlavors(withDetails()), flavorToHardware));
      logger.debug("<< hardware(%d)", hardware.size());
      return hardware;
   }
}