diskUsageForImage returns the disk-usage baseistics for the specified image.
(ctx context.Context, image *Image, tree *layerTree)
| 52 | |
| 53 | // diskUsageForImage returns the disk-usage baseistics for the specified image. |
| 54 | func diskUsageForImage(ctx context.Context, image *Image, tree *layerTree) ([]ImageDiskUsage, error) { |
| 55 | if err := image.isCorrupted(""); err != nil { |
| 56 | return nil, err |
| 57 | } |
| 58 | |
| 59 | base := ImageDiskUsage{ |
| 60 | ID: image.ID(), |
| 61 | Created: image.Created(), |
| 62 | Repository: "<none>", |
| 63 | Tag: "<none>", |
| 64 | } |
| 65 | |
| 66 | // Shared, unique and total size. |
| 67 | parent, err := tree.parent(ctx, image) |
| 68 | if err != nil { |
| 69 | return nil, err |
| 70 | } |
| 71 | childIDs, err := tree.children(ctx, image, false) |
| 72 | if err != nil { |
| 73 | return nil, err |
| 74 | } |
| 75 | |
| 76 | // Optimistically set unique size to the full size of the image. |
| 77 | size, err := image.Size() |
| 78 | if err != nil { |
| 79 | return nil, err |
| 80 | } |
| 81 | base.UniqueSize = size |
| 82 | |
| 83 | if len(childIDs) > 0 { |
| 84 | // If we have children, we share everything. |
| 85 | base.SharedSize = base.UniqueSize |
| 86 | base.UniqueSize = 0 |
| 87 | } else if parent != nil { |
| 88 | // If we have no children but a parent, remove the parent |
| 89 | // (shared) size from the unique one. |
| 90 | size, err := parent.Size() |
| 91 | if err != nil { |
| 92 | return nil, err |
| 93 | } |
| 94 | base.UniqueSize -= size |
| 95 | base.SharedSize = size |
| 96 | } |
| 97 | |
| 98 | base.Size = base.SharedSize + base.UniqueSize |
| 99 | |
| 100 | // Number of containers using the image. |
| 101 | containers, err := image.Containers() |
| 102 | if err != nil { |
| 103 | return nil, err |
| 104 | } |
| 105 | base.Containers = len(containers) |
| 106 | |
| 107 | repoTags, err := image.NamedRepoTags() |
| 108 | if err != nil { |
| 109 | return nil, err |
| 110 | } |
| 111 |
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