mirror of
https://github.com/wagoodman/dive
synced 2024-05-29 10:12:11 +02:00
79 lines
1.6 KiB
Go
79 lines
1.6 KiB
Go
// +build linux
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package podman
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import (
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"context"
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"fmt"
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podmanImage "github.com/containers/libpod/libpod/image"
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"github.com/wagoodman/dive/dive/filetree"
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"github.com/wagoodman/dive/dive/image"
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"strings"
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)
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// Layer represents a Docker image layer and metadata
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type layer struct {
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obj *podmanImage.Image
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history *podmanImage.History
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index int
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tree *filetree.FileTree
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}
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func (l *layer) getHistory() (*podmanImage.History, error) {
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if l.history != nil {
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return l.history, nil
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}
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history, err := l.obj.History(context.TODO())
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if err != nil {
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return nil, err
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}
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if len(history) > 0 {
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l.history = history[0]
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return history[0], nil
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}
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return nil, fmt.Errorf("could not find history")
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}
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func (l *layer) Size() uint64 {
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history, err := l.getHistory()
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if err != nil {
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// todo: what should be done here???
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panic(err)
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}
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return uint64(history.Size)
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}
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// ShortId returns the truncated id of the current layer.
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func (l *layer) Command() string {
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history, err := l.getHistory()
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if err != nil {
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return "error: " + err.Error()
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}
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return strings.TrimPrefix(history.CreatedBy, "/bin/sh -c ")
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}
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// ShortId returns the truncated id of the current layer.
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func (l *layer) ShortId() string {
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rangeBound := 15
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id := l.obj.ID()
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if length := len(id); length < 15 {
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rangeBound = length
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}
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id = id[0:rangeBound]
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return id
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}
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// String represents a layer in a columnar format.
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func (l *layer) ToLayer() *image.Layer {
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return &image.Layer{
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Id: l.obj.ID(),
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Index: l.index,
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Command: l.Command(),
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Size: l.Size(),
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Tree: l.tree,
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Names: l.obj.Names(),
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Digest: l.obj.Digest().String(),
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}
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}
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