| 1 | /** |
| 2 | * |
| 3 | * Copyright (C) 2011 Cloud Conscious, LLC. <info@cloudconscious.com> |
| 4 | * |
| 5 | * ==================================================================== |
| 6 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 7 | * you may not use this file except in compliance with the License. |
| 8 | * You may obtain a copy of the License at |
| 9 | * |
| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | * |
| 12 | * Unless required by applicable law or agreed to in writing, software |
| 13 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 15 | * See the License for the specific language governing permissions and |
| 16 | * limitations under the License. |
| 17 | * ==================================================================== |
| 18 | */ |
| 19 | package org.jclouds.compute.domain; |
| 20 | |
| 21 | import javax.annotation.Nullable; |
| 22 | |
| 23 | import org.jclouds.compute.domain.internal.VolumeImpl; |
| 24 | |
| 25 | import com.google.inject.ImplementedBy; |
| 26 | |
| 27 | /** |
| 28 | * Describes what appears as a disk to an {@link OperatingSystem} |
| 29 | * |
| 30 | * @author Adrian Cole |
| 31 | */ |
| 32 | @ImplementedBy(VolumeImpl.class) |
| 33 | public interface Volume { |
| 34 | |
| 35 | /** |
| 36 | * Describes the cardinal type of a volume; used to determine scope and exclusivity. |
| 37 | */ |
| 38 | public enum Type { |
| 39 | /** |
| 40 | * scoped to a node cannot be remounted onto another node. |
| 41 | */ |
| 42 | LOCAL, |
| 43 | |
| 44 | /** |
| 45 | * shared mount, non-exclusive by nature, although may happen to be exclusive. |
| 46 | */ |
| 47 | NAS, |
| 48 | /** |
| 49 | * network storage; exclusive by nature, remountable onto other machines. |
| 50 | */ |
| 51 | SAN; |
| 52 | } |
| 53 | |
| 54 | /** |
| 55 | * Unique identifier. If set, can be used to reference the volume for reorganizing within |
| 56 | * {@link Hardware} or external commands such as backups. |
| 57 | * |
| 58 | */ |
| 59 | @Nullable |
| 60 | String getId(); |
| 61 | |
| 62 | /** |
| 63 | * Describes the cardinal type of a volume; used to determine scope and exclusivity. |
| 64 | */ |
| 65 | Type getType(); |
| 66 | |
| 67 | /** |
| 68 | * @return capacity in gigabytes, if available |
| 69 | * |
| 70 | */ |
| 71 | @Nullable |
| 72 | Float getSize(); |
| 73 | |
| 74 | /** |
| 75 | * |
| 76 | * @return device this volume relates to on an operating system, if available |
| 77 | */ |
| 78 | @Nullable |
| 79 | String getDevice(); |
| 80 | |
| 81 | /** |
| 82 | * |
| 83 | * @return true if this survives restarts |
| 84 | */ |
| 85 | boolean isDurable(); |
| 86 | |
| 87 | /** |
| 88 | * |
| 89 | * @return true if this is the boot device |
| 90 | */ |
| 91 | boolean isBootDevice(); |
| 92 | |
| 93 | } |