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jclouds components to access compute providers
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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF 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.compute.domain.internal;

import static com.google.common.base.Preconditions.checkNotNull;
import static org.jclouds.compute.util.ComputeServiceUtils.getCores;
import static org.jclouds.compute.util.ComputeServiceUtils.getSpace;

import java.net.URI;
import java.util.List;
import java.util.Map;
import java.util.Set;

import org.jclouds.compute.domain.ComputeType;
import org.jclouds.compute.domain.Hardware;
import org.jclouds.compute.domain.Image;
import org.jclouds.compute.domain.Processor;
import org.jclouds.compute.domain.Volume;
import org.jclouds.domain.Location;
import org.jclouds.domain.ResourceMetadata;
import org.jclouds.javax.annotation.Nullable;

import com.google.common.base.Objects.ToStringHelper;
import com.google.common.base.Predicate;
import com.google.common.collect.ComparisonChain;
import com.google.common.collect.ImmutableList;

/**
 * @author Adrian Cole
 */
public class HardwareImpl extends ComputeMetadataImpl implements Hardware {

   private final List processors;
   private final int ram;
   private final List volumes;
   private final Predicate supportsImage;
   private final String hypervisor;

   public HardwareImpl(String providerId, String name, String id, @Nullable Location location, URI uri,
         Map userMetadata, Set tags, Iterable processors, int ram,
         Iterable volumes, Predicate supportsImage, @Nullable String hypervisor) {
      super(ComputeType.HARDWARE, providerId, name, id, location, uri, userMetadata, tags);
      this.processors = ImmutableList.copyOf(checkNotNull(processors, "processors"));
      this.ram = ram;
      this.volumes = ImmutableList.copyOf(checkNotNull(volumes, "volumes"));
      this.supportsImage = supportsImage;
      this.hypervisor = hypervisor;
   }

   /**
    * {@inheritDoc}
    */
   @Override
   public List getProcessors() {
      return processors;
   }

   /**
    * {@inheritDoc}
    */
   @Override
   public int getRam() {
      return ram;
   }

   /**
    * {@inheritDoc}
    */
   @Override
   public List getVolumes() {
      return volumes;
   }

   /**
    * {@inheritDoc}
    */
   @Override
   @Nullable
   public String getHypervisor() {
      return hypervisor;
   }

   /**
    * {@inheritDoc}
    */
   @Override
   public int compareTo(ResourceMetadata that) {
      if (that instanceof Hardware) {
         Hardware thatHardware = Hardware.class.cast(that);
         return ComparisonChain.start().compare(getCores(this), getCores(thatHardware)).compare(this.getRam(), thatHardware.getRam())
               .compare(getSpace(this), getSpace(thatHardware)).result();
      } else {
         return super.compareTo(that);
      }
   }

   @Override
   protected ToStringHelper string() {
      ToStringHelper helper = computeToStringPrefix();
      helper.add("processors", processors).add("ram", ram);
      if (volumes.size() > 0)
         helper.add("volumes", volumes);
      helper.add("hypervisor", hypervisor);
      helper.add("supportsImage", supportsImage);
      return addComputeToStringSuffix(helper);
   }

   /**
    * {@inheritDoc}
    */
   @Override
   public Predicate supportsImage() {
      return supportsImage;
   }

}