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compute image VirtualSize

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Signed-off-by: Nicolas De Loof <nicolas.deloof@gmail.com>
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This commit is contained in:
Nicolas De Loof 2022-07-06 09:58:10 +02:00 • committed by Sebastiaan van Stijn
parent 992961c56c
commit a46ce37d25
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1 changed files with 27 additions and 1 deletions
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28
daemon/containerd/image_list.go
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@ -3,7 +3,10 @@ package containerd
import (
"context"
"github.com/containerd/containerd"
"github.com/containerd/containerd/snapshots"
"github.com/docker/docker/api/types"
"github.com/opencontainers/image-spec/identity"
)
// Images returns a filtered list of images.
@ -13,6 +16,8 @@ func (i *ImageService) Images(ctx context.Context, opts types.ImageListOptions)
return nil, err
}
snapshotter := i.client.SnapshotService(containerd.DefaultSnapshotter)
var ret []*types.ImageSummary
for _, img := range imgs {
size, err := img.Size(ctx)
@ -20,13 +25,18 @@ func (i *ImageService) Images(ctx context.Context, opts types.ImageListOptions)
return nil, err
}
virtualSize, err := computeVirtualSize(ctx, img, snapshotter)
if err != nil {
return nil, err
}
ret = append(ret, &types.ImageSummary{
RepoDigests: []string{img.Name() + "@" + img.Target().Digest.String()}, // "hello-world@sha256:bfea6278a0a267fad2634554f4f0c6f31981eea41c553fdf5a83e95a41d40c38"},
RepoTags: []string{img.Name()},
Containers: -1,
ParentID: "",
SharedSize: -1,
VirtualSize: 10,
VirtualSize: virtualSize,
ID: img.Target().Digest.String(),
Created: img.Metadata().CreatedAt.Unix(),
Size: size,
@ -35,3 +45,19 @@ func (i *ImageService) Images(ctx context.Context, opts types.ImageListOptions)
return ret, nil
}
func computeVirtualSize(ctx context.Context, image containerd.Image, snapshotter snapshots.Snapshotter) (int64, error) {
var virtualSize int64
diffIDs, err := image.RootFS(ctx)
if err != nil {
return virtualSize, err
}
for _, chainID := range identity.ChainIDs(diffIDs) {
usage, err := snapshotter.Usage(ctx, chainID.String())
if err != nil {
return virtualSize, err
}
virtualSize += usage.Size
}
return virtualSize, nil
}