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Use "Size" field to describe blobs over "Length"

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After consideration, we've changed the main descriptor field name to for number
of bytes to "size" to match convention. While this may be a subjective
argument, commonly we refer to files by their "size" rather than their
"length". This will match other conventions, like `(FileInfo).Size()` and
methods on `io.SizeReaderAt`. Under more broad analysis, this argument doesn't
necessarily hold up. If anything, "size" is shorter than "length".

Signed-off-by: Stephen J Day <stephen.day@docker.com>
This commit is contained in:
Stephen J Day 2015-07-17 17:07:11 -07:00
parent c958371f4b
commit 249ad3b76d
9 changed files with 38 additions and 35 deletions
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10
docs/storage/blob_test.go
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@ -178,7 +178,7 @@ func TestSimpleBlobRead(t *testing.T) {
t.Fatalf("error getting seeker size for random layer: %v", err)
}
descBefore := distribution.Descriptor{Digest: dgst, MediaType: "application/octet-stream", Length: randomLayerSize}
descBefore := distribution.Descriptor{Digest: dgst, MediaType: "application/octet-stream", Size: randomLayerSize}
t.Logf("desc: %v", descBefore)
desc, err = addBlob(ctx, bs, descBefore, randomLayerReader)
@ -186,8 +186,8 @@ func TestSimpleBlobRead(t *testing.T) {
t.Fatalf("error adding blob to blobservice: %v", err)
}
if desc.Length != randomLayerSize {
t.Fatalf("committed blob has incorrect length: %v != %v", desc.Length, randomLayerSize)
if desc.Size != randomLayerSize {
t.Fatalf("committed blob has incorrect length: %v != %v", desc.Size, randomLayerSize)
}
rc, err = bs.Open(ctx, desc.Digest) // note that we are opening with original digest.
@ -330,8 +330,8 @@ func addBlob(ctx context.Context, bs distribution.BlobIngester, desc distributio
if nn, err := io.Copy(wr, rd); err != nil {
return distribution.Descriptor{}, err
} else if nn != desc.Length {
return distribution.Descriptor{}, fmt.Errorf("incorrect number of bytes copied: %v != %v", nn, desc.Length)
} else if nn != desc.Size {
return distribution.Descriptor{}, fmt.Errorf("incorrect number of bytes copied: %v != %v", nn, desc.Size)
}
return wr.Commit(ctx, desc)