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package image
import (
"context"
"github.com/containers/libpod/libpod/events"
"github.com/containers/storage"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
)
// GetPruneImages returns a slice of images that have no names/unused
func (ir *Runtime) GetPruneImages(all bool) ([]*Image, error) {
var (
pruneImages []*Image
)
allImages, err := ir.GetRWImages()
if err != nil {
return nil, err
}
for _, i := range allImages {
if len(i.Names()) == 0 {
pruneImages = append(pruneImages, i)
continue
}
if all {
containers, err := i.Containers()
if err != nil {
return nil, err
}
if len(containers) < 1 {
pruneImages = append(pruneImages, i)
}
}
}
return pruneImages, nil
}
// PruneImages prunes dangling and optionally all unused images from the local
// image store
func (ir *Runtime) PruneImages(ctx context.Context, all bool) ([]string, error) {
var prunedCids []string
pruneImages, err := ir.GetPruneImages(all)
if err != nil {
return nil, errors.Wrap(err, "unable to get images to prune")
}
for _, p := range pruneImages {
if err := p.Remove(ctx, true); err != nil {
if errors.Cause(err) == storage.ErrImageUsedByContainer {
logrus.Warnf("Failed to prune image %s as it is in use: %v", p.ID(), err)
continue
}
return nil, errors.Wrap(err, "failed to prune image")
}
defer p.newImageEvent(events.Prune)
prunedCids = append(prunedCids, p.ID())
}
return prunedCids, nil
}
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