Fix wrongCid bug and log errors

reedsolomon/recover.go

@@ -45,8 +45,6 @@ outer:
 	for i, ndp := range format.GetNodes(ctx, dag, ids) {
 		nd, err := ndp.Get(ctx)
 		switch err {
-		case context.DeadlineExceeded, context.Canceled:
-			return nil, err
 		case nil:
 			bs[i] = make([]byte, s)
 			if i < lpnd {
@@ -55,11 +53,18 @@ outer:
 			} else {
 				copy(bs[i], nd.RawData())
 			}
+
 			nlst = append(nlst, i)
+			continue
+		case context.DeadlineExceeded, context.Canceled:
+			return nil, err
+		case format.ErrNotFound:
 		default:
-			bs[i] = make([]byte, s)
-			lst = append(lst, i)
+			log.Errorf("Failed to get child Node(%s) for recovery: %s", ids[i].String(), err)
 		}
+
+		bs[i] = make([]byte, s)
+		lst = append(lst, i)
 	}
 
 	if lrpnd < len(lst) {
@@ -117,6 +122,6 @@ outer:
 var wrongCid, _ = cid.Prefix{
 	Version:  1,
 	Codec:    1,
-	MhType:   multihash.IDENTITY,
+	MhType:   multihash.SHA2_256,
 	MhLength: 1,
 }.Sum([]byte("f"))

reedsolomon/reedsolomon.go

@@ -6,10 +6,13 @@ import (
 
 	"github.com/ipfs/go-cid"
 	"github.com/ipfs/go-ipld-format"
+	logging "github.com/ipfs/go-log/v2"
 
 	"github.com/Wondertan/go-ipfs-recovery"
 )
 
+var log = logging.Logger("recovery")
+
 // Custom codec for Reed-Solomon recovery Nodes.
 const Codec uint64 = 0x700 // random number // TODO Register in IPFS codec table.