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content: change Writer/ReaderAt to take OCI

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This change allows implementations to resolve the location of the actual data
using OCI descriptor fields such as MediaType.

No OCI descriptor field is written to the store.

No change on gRPC API.

Signed-off-by: Akihiro Suda <suda.akihiro@lab.ntt.co.jp>
This commit is contained in:
Akihiro Suda
2018-05-21 16:31:26 +09:00
parent e4ad710ce8
commit d88de4a34f
32 changed files with 279 additions and 169 deletions
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8
remotes/docker/schema1/converter.go
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@@ -211,12 +211,12 @@ func (c *Converter) Convert(ctx context.Context, opts ...ConvertOpt) (ocispec.De
}
ref := remotes.MakeRefKey(ctx, desc)
if err := content.WriteBlob(ctx, c.contentStore, ref, bytes.NewReader(mb), desc.Size, desc.Digest, content.WithLabels(labels)); err != nil {
if err := content.WriteBlob(ctx, c.contentStore, ref, bytes.NewReader(mb), desc, content.WithLabels(labels)); err != nil {
return ocispec.Descriptor{}, errors.Wrap(err, "failed to write config")
}
ref = remotes.MakeRefKey(ctx, config)
if err := content.WriteBlob(ctx, c.contentStore, ref, bytes.NewReader(b), config.Size, config.Digest); err != nil {
if err := content.WriteBlob(ctx, c.contentStore, ref, bytes.NewReader(b), config); err != nil {
return ocispec.Descriptor{}, errors.Wrap(err, "failed to write config")
}
@@ -265,7 +265,7 @@ func (c *Converter) fetchBlob(ctx context.Context, desc ocispec.Descriptor) erro
size = 0
}
cw, err := content.OpenWriter(ctx, c.contentStore, ref, size, desc.Digest)
cw, err := content.OpenWriter(ctx, c.contentStore, content.WithRef(ref), content.WithDescriptor(desc))
if err != nil {
if !errdefs.IsAlreadyExists(err) {
return err
@@ -274,7 +274,7 @@ func (c *Converter) fetchBlob(ctx context.Context, desc ocispec.Descriptor) erro
// TODO: Check if blob -> diff id mapping already exists
// TODO: Check if blob empty label exists
ra, err := c.contentStore.ReaderAt(ctx, desc.Digest)
ra, err := c.contentStore.ReaderAt(ctx, desc)
if err != nil {
return err
}