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Add manifest digest annotation for snapshotters

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Signed-off-by: Samarth Shah <samarthmshah@gmail.com>
This commit is contained in:
Samarth Shah 2020-10-07 23:12:01 +00:00
parent 944e9b70e2
commit 5fc721370d
1 changed files with 9 additions and 5 deletions
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14
pkg/cri/server/image_pull.go
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@ -456,9 +456,12 @@ const (
// targetRefLabel is a label which contains image reference and will be passed
// to snapshotters.
targetRefLabel = "containerd.io/snapshot/cri.image-ref"
// targetDigestLabel is a label which contains layer digest and will be passed
// targetManifestDigestLabel is a label which contains manifest digest and will be passed
// to snapshotters.
targetDigestLabel = "containerd.io/snapshot/cri.layer-digest"
targetManifestDigestLabel = "containerd.io/snapshot/cri.manifest-digest"
// targetLayerDigestLabel is a label which contains layer digest and will be passed
// to snapshotters.
targetLayerDigestLabel = "containerd.io/snapshot/cri.layer-digest"
// targetImageLayersLabel is a label which contains layer digests contained in
// the target image and will be passed to snapshotters for preparing layers in
// parallel. Skipping some layers is allowed and only affects performance.
@ -466,8 +469,8 @@ const (
)
// appendInfoHandlerWrapper makes a handler which appends some basic information
// of images to each layer descriptor as annotations during unpack. These
// annotations will be passed to snapshotters as labels. These labels will be
// of images like digests for manifest and their child layers as annotations during unpack.
// These annotations will be passed to snapshotters as labels. These labels will be
// used mainly by stargz-based snapshotters for querying image contents from the
// registry.
func appendInfoHandlerWrapper(ref string) func(f containerdimages.Handler) containerdimages.Handler {
@ -486,8 +489,9 @@ func appendInfoHandlerWrapper(ref string) func(f containerdimages.Handler) conta
c.Annotations = make(map[string]string)
}
c.Annotations[targetRefLabel] = ref
c.Annotations[targetDigestLabel] = c.Digest.String()
c.Annotations[targetLayerDigestLabel] = c.Digest.String()
c.Annotations[targetImageLayersLabel] = getLayers(ctx, targetImageLayersLabel, children[i:], labels.Validate)
c.Annotations[targetManifestDigestLabel] = desc.Digest.String()
}
}
}