40 lines
980 B
Go
40 lines
980 B
Go
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package rootfs
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import (
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"context"
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rootfsapi "github.com/docker/containerd/api/services/rootfs"
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containerd_v1_types "github.com/docker/containerd/api/types/descriptor"
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"github.com/docker/containerd/rootfs"
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digest "github.com/opencontainers/go-digest"
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ocispec "github.com/opencontainers/image-spec/specs-go/v1"
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)
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func NewPreparerFromClient(client rootfsapi.RootFSClient) rootfs.Preparer {
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return remotePreparer{
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client: client,
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}
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}
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type remotePreparer struct {
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client rootfsapi.RootFSClient
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}
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func (rp remotePreparer) Prepare(ctx context.Context, layers []ocispec.Descriptor) (digest.Digest, error) {
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pr := rootfsapi.PrepareRequest{
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Layers: make([]*containerd_v1_types.Descriptor, len(layers)),
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}
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for i, l := range layers {
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pr.Layers[i] = &containerd_v1_types.Descriptor{
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MediaType: l.MediaType,
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Digest: l.Digest,
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MediaSize: l.Size,
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}
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}
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resp, err := rp.client.Prepare(ctx, &pr)
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if err != nil {
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return "", nil
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}
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return resp.ChainID, nil
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}
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