org.jclouds.cloudsigma.domain.SCSIDevice Maven / Gradle / Ivy

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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.cloudsigma.domain;

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

/**
 * 
 * @author Adrian Cole
 */
public class SCSIDevice extends Device {
   public static class Builder extends Device.Builder {
      private final int unit;

      public Builder(int unit) {
         this.unit = unit;
      }

      @Override
      public Device build() {
         return new SCSIDevice(uuid, mediaType, unit);
      }

   }

   private static final int bus = 0;
   private final int unit;

   public SCSIDevice(String driveUuid, MediaType mediaType, int unit) {
      super(driveUuid, mediaType);
      checkArgument(unit >= 0 && unit < 8, "unit must be between 0 and 7");
      this.unit = unit;
   }

   @Override
   public int hashCode() {
      final int prime = 31;
      int result = 1;
      result = prime * result + bus;
      result = prime * result + unit;
      return result;
   }

   @Override
   public boolean equals(Object obj) {
      if (this == obj)
         return true;
      if (obj == null)
         return false;
      if (getClass() != obj.getClass())
         return false;
      SCSIDevice other = (SCSIDevice) obj;
      if (unit != other.unit)
         return false;
      return true;
   }

   public int getBus() {
      return bus;
   }

   public int getUnit() {
      return unit;
   }

   @Override
   public String getId() {
      return String.format("scsi:%d:%d", bus, unit);
   }

   @Override
   public String toString() {
      return "[id=" + getId() + ", driveUuid=" + driveUuid + ", mediaType=" + mediaType + "]";
   }
}