chore(customrawdb): unexport customrawdb.NewSyncPerformedIterator (#4450)

Signed-off-by: Tsvetan Dimitrov (tsvetan.dimitrov@avalabs.org)

Author: powerslider

vms/evm/sync/customrawdb/sync_progress.go

@@ -180,15 +180,9 @@ func WriteSyncPerformed(db ethdb.KeyValueWriter, blockNumber uint64) error {
 	return db.Put(bytes, nil)
 }
 
-// NewSyncPerformedIterator returns an iterator over all block numbers the VM
-// has state synced to.
-func NewSyncPerformedIterator(db ethdb.Iteratee) ethdb.Iterator {
-	return rawdb.NewKeyLengthIterator(db.NewIterator(syncPerformedPrefix, nil), syncPerformedKeyLength)
-}
-
 // GetLatestSyncPerformed returns the latest block number state synced performed to.
 func GetLatestSyncPerformed(db ethdb.Iteratee) (uint64, error) {
-	it := NewSyncPerformedIterator(db)
+	it := newSyncPerformedIterator(db)
 	defer it.Release()
 
 	var latestSyncPerformed uint64
@@ -201,6 +195,18 @@ func GetLatestSyncPerformed(db ethdb.Iteratee) (uint64, error) {
 	return latestSyncPerformed, it.Error()
 }
 
+// newSyncPerformedIterator returns an iterator over all block numbers the VM
+// has state synced to.
+func newSyncPerformedIterator(db ethdb.Iteratee) ethdb.Iterator {
+	return rawdb.NewKeyLengthIterator(db.NewIterator(syncPerformedPrefix, nil), syncPerformedKeyLength)
+}
+
+// parseSyncPerformedKey returns the block number from keys returned by
+// NewSyncPerformedIterator. It panics if the key is shorter than `syncPerformedKeyLength`.
+func parseSyncPerformedKey(key []byte) uint64 {
+	return binary.BigEndian.Uint64(key[len(syncPerformedPrefix):])
+}
+
 // clearPrefix removes all keys in db that begin with prefix and match an
 // expected key length. `keyLen` must include the length of the prefix.
 func clearPrefix(db ethdb.KeyValueStore, prefix []byte, keyLen int) error {
@@ -230,11 +236,3 @@ func clearPrefix(db ethdb.KeyValueStore, prefix []byte, keyLen int) error {
 	}
 	return batch.Write()
 }
-
-// parseSyncPerformedKey returns the block number from keys the iterator returned
-// from NewSyncPerformedIterator. It assumes the key has the syncPerformedPrefix
-// followed by an 8-byte big-endian block number, and panics if the key is shorter
-// than len(syncPerformedPrefix)+wrappers.LongLen.
-func parseSyncPerformedKey(key []byte) uint64 {
-	return binary.BigEndian.Uint64(key[len(syncPerformedPrefix):])
-}

vms/evm/sync/customrawdb/sync_progress_test.go

@@ -185,7 +185,7 @@ func TestSyncPerformedAndLatest(t *testing.T) {
 	require.NoError(t, WriteSyncPerformed(db, 15))
 
 	// Iterator yields all
-	vals := mapIterator(t, NewSyncPerformedIterator(db), parseSyncPerformedKey)
+	vals := mapIterator(t, newSyncPerformedIterator(db), parseSyncPerformedKey)
 
 	require.Equal(t, []uint64{10, 15, 20}, vals)