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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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10
cmd/ctr/commands/content/content.go
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@@ -72,7 +72,7 @@ var (
}
defer cancel()
cs := client.ContentStore()
ra, err := cs.ReaderAt(ctx, dgst)
ra, err := cs.ReaderAt(ctx, ocispec.Descriptor{Digest: dgst})
if err != nil {
return err
}
@@ -121,7 +121,7 @@ var (
// TODO(stevvooe): Allow ingest to be reentrant. Currently, we expect
// all data to be written in a single invocation. Allow multiple writes
// to the same transaction key followed by a commit.
return content.WriteBlob(ctx, cs, ref, os.Stdin, expectedSize, expectedDigest)
return content.WriteBlob(ctx, cs, ref, os.Stdin, ocispec.Descriptor{Size: expectedSize, Digest: expectedDigest})
},
}
@@ -314,7 +314,7 @@ var (
}
defer cancel()
cs := client.ContentStore()
ra, err := cs.ReaderAt(ctx, dgst)
ra, err := cs.ReaderAt(ctx, ocispec.Descriptor{Digest: dgst})
if err != nil {
return err
}
@@ -326,7 +326,7 @@ var (
}
defer nrc.Close()
wr, err := cs.Writer(ctx, "edit-"+object, 0, "") // TODO(stevvooe): Choose a better key?
wr, err := cs.Writer(ctx, content.WithRef("edit-"+object)) // TODO(stevvooe): Choose a better key?
if err != nil {
return err
}
@@ -482,7 +482,7 @@ var (
Size: info.Size,
}
ra, err := cs.ReaderAt(ctx, dgst)
ra, err := cs.ReaderAt(ctx, desc)
if err != nil {
return err
}