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Add OpenReader to create ReaderAt interface

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Signed-off-by: Maksym Pavlenko <pavlenko.maksym@gmail.com>
This commit is contained in:
Maksym Pavlenko
2021-03-08 12:04:58 -08:00
parent a72fe7da21
commit 571cc32df6
3 changed files with 33 additions and 17 deletions
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20
content/local/store.go
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@@ -131,25 +131,13 @@ func (s *store) ReaderAt(ctx context.Context, desc ocispec.Descriptor) (content.
if err != nil {
return nil, errors.Wrapf(err, "calculating blob path for ReaderAt")
}
fi, err := os.Stat(p)
if err != nil {
if !os.IsNotExist(err) {
return nil, err
}
return nil, errors.Wrapf(errdefs.ErrNotFound, "blob %s expected at %s", desc.Digest, p)
reader, err := OpenReader(p)
if err != nil {
return nil, errors.Wrapf(err, "blob %s expected at %s", desc.Digest, p)
}
fp, err := os.Open(p)
if err != nil {
if !os.IsNotExist(err) {
return nil, err
}
return nil, errors.Wrapf(errdefs.ErrNotFound, "blob %s expected at %s", desc.Digest, p)
}
return sizeReaderAt{size: fi.Size(), fp: fp}, nil
return reader, nil
}
// Delete removes a blob by its digest.