DO NOT MERGE: Debug

I'm being dumb.

Signed-off-by: Miloslav Trmač <mitr@redhat.com>

pkg/chunked/cache_linux.go

@@ -822,8 +822,11 @@ func unmarshalToc(manifest []byte) (*internal.TOC, error) {
 
 	iter := jsoniter.ParseBytes(jsoniter.ConfigFastest, manifest)
 
+	logrus.Errorf("ITER START")
 	for field := iter.ReadObject(); field != ""; field = iter.ReadObject() {
-		switch strings.ToLower(field) {
+		x := strings.ToLower(field)
+		logrus.Errorf("FIELD %q", field)
+		switch x {
 		case "version":
 			toc.Version = iter.ReadInt()
 
@@ -899,6 +902,7 @@ func unmarshalToc(manifest []byte) (*internal.TOC, error) {
 
 		case "tarsplitdigest": // strings.ToLower("tarSplitDigest")
 			s := iter.ReadString()
+			logrus.Errorf("Got TSD %q", s)
 			d, err := digest.Parse(s)
 			if err != nil {
 				return nil, fmt.Errorf("Invalid tarSplitDigest %q: %w", s, err)
@@ -909,6 +913,7 @@ func unmarshalToc(manifest []byte) (*internal.TOC, error) {
 			iter.Skip()
 		}
 	}
+	logrus.Errorf("ITER END")
 
 	// validate there is no extra data in the provided input.  This is a security measure to avoid
 	// that the digest we calculate for the TOC refers to the entire document.

pkg/chunked/internal/compression.go

@@ -15,6 +15,7 @@ import (
 	jsoniter "github.com/json-iterator/go"
 	"github.com/klauspost/compress/zstd"
 	"github.com/opencontainers/go-digest"
+	"github.com/sirupsen/logrus"
 )
 
 type TOC struct {
@@ -133,6 +134,7 @@ func WriteZstdChunkedManifest(dest io.Writer, outMetadata map[string]string, off
 	const zstdSkippableFrameHeader = 8
 	manifestOffset := offset + zstdSkippableFrameHeader
 
+	logrus.Errorf("WRITING %q", tarSplitData.Digest)
 	toc := TOC{
 		Version:        1,
 		Entries:        metadata,