dao: serialize state.StorageItem as raw bytes

pkg/core/dao/dao.go

@@ -364,28 +364,14 @@ func (dao *Simple) GetStorageItem(id int32, key []byte) state.StorageItem {
 	if err != nil {
 		return nil
 	}
-	r := io.NewBinReaderFromBuf(b)
-
-	si := state.StorageItem{}
-	si.DecodeBinary(r)
-	if r.Err != nil {
-		return nil
-	}
-
-	return si
+	return b
 }
 
 // PutStorageItem puts given StorageItem for given id with given
 // key into the given store.
 func (dao *Simple) PutStorageItem(id int32, key []byte, si state.StorageItem) error {
 	stKey := makeStorageItemKey(id, key)
-	buf := io.NewBufBinWriter()
-	si.EncodeBinary(buf.BinWriter)
-	if buf.Err != nil {
-		return buf.Err
-	}
-	v := buf.Bytes()
-	return dao.Store.Put(stKey, v)
+	return dao.Store.Put(stKey, si)
 }
 
 // DeleteStorageItem drops storage item for the given id with the
@@ -404,23 +390,14 @@ func (dao *Simple) GetStorageItems(id int32) (map[string]state.StorageItem, erro
 // given scripthash.
 func (dao *Simple) GetStorageItemsWithPrefix(id int32, prefix []byte) (map[string]state.StorageItem, error) {
 	var siMap = make(map[string]state.StorageItem)
-	var err error
 
 	saveToMap := func(k, v []byte) {
-		if err != nil {
-			return
-		}
-		r := io.NewBinReaderFromBuf(v)
-		si := state.StorageItem{}
-		si.DecodeBinary(r)
-		if r.Err != nil {
-			err = r.Err
-			return
-		}
 		// Cut prefix and hash.
 		// Must copy here, #1468.
 		key := make([]byte, len(k))
 		copy(key, k)
+		si := make(state.StorageItem, len(v))
+		copy(si, v)
 		siMap[string(key)] = si
 	}
 	dao.Seek(id, prefix, saveToMap)

pkg/core/native/management.go

@@ -480,16 +480,8 @@ func (m *Management) InitializeCache(d dao.DAO) error {
 
 	var initErr error
 	d.Seek(m.ID, []byte{prefixContract}, func(_, v []byte) {
-		var r = io.NewBinReaderFromBuf(v)
-		var si state.StorageItem
-		si.DecodeBinary(r)
-		if r.Err != nil {
-			initErr = r.Err
-			return
-		}
-
 		var cs state.Contract
-		r = io.NewBinReaderFromBuf(si)
+		r := io.NewBinReaderFromBuf(v)
 		cs.DecodeBinary(r)
 		if r.Err != nil {
 			initErr = r.Err

pkg/core/native/name_service.go

@@ -533,13 +533,7 @@ func (n *NameService) getRecordsInternal(d dao.DAO, name string) map[RecordType]
 	res := make(map[RecordType]string)
 	d.Seek(n.ID, key, func(k, v []byte) {
 		rt := RecordType(k[len(k)-1])
-		var si state.StorageItem
-		r := io.NewBinReaderFromBuf(v)
-		si.DecodeBinary(r)
-		if r.Err != nil {
-			panic(r.Err)
-		}
-		res[rt] = string(si)
+		res[rt] = string(v)
 	})
 	return res
 }

pkg/core/native/native_neo.go

@@ -20,7 +20,6 @@ import (
 	"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
 	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
 	"github.com/nspcc-dev/neo-go/pkg/encoding/bigint"
-	"github.com/nspcc-dev/neo-go/pkg/io"
 	"github.com/nspcc-dev/neo-go/pkg/smartcontract"
 	"github.com/nspcc-dev/neo-go/pkg/smartcontract/callflag"
 	"github.com/nspcc-dev/neo-go/pkg/smartcontract/manifest"
@@ -330,19 +329,13 @@ func (n *NEO) PostPersist(ic *interop.Context) error {
 func (n *NEO) getGASPerVote(d dao.DAO, key []byte, index ...uint32) []big.Int {
 	var max = make([]uint32, len(index))
 	var reward = make([]big.Int, len(index))
-	var si state.StorageItem
 	d.Seek(n.ID, key, func(k, v []byte) {
 		if len(k) == 4 {
 			num := binary.BigEndian.Uint32(k)
 			for i, ind := range index {
 				if max[i] < num && num <= ind {
 					max[i] = num
-					r := io.NewBinReaderFromBuf(v)
-					si.DecodeBinary(r)
-					if r.Err != nil {
-						return
-					}
-					reward[i] = *bigint.FromBytes(si)
+					reward[i] = *bigint.FromBytes(v)
 				}
 			}
 		}

pkg/core/state/storage_item.go

@@ -1,18 +1,4 @@
 package state
 
-import (
-	"github.com/nspcc-dev/neo-go/pkg/io"
-)
-
 // StorageItem is the value to be stored with read-only flag.
 type StorageItem []byte
-
-// EncodeBinary implements Serializable interface.
-func (si *StorageItem) EncodeBinary(w *io.BinWriter) {
-	w.WriteVarBytes(*si)
-}
-
-// DecodeBinary implements Serializable interface.
-func (si *StorageItem) DecodeBinary(r *io.BinReader) {
-	*si = r.ReadVarBytes()
-}

pkg/core/state/storage_item_test.go

@@ -1,12 +0,0 @@
-package state
-
-import (
-	"testing"
-
-	"github.com/nspcc-dev/neo-go/internal/testserdes"
-)
-
-func TestEncodeDecodeStorageItem(t *testing.T) {
-	storageItem := &StorageItem{1, 2, 3}
-	testserdes.EncodeDecodeBinary(t, storageItem, new(StorageItem))
-}

pkg/rpc/server/server.go

@@ -862,13 +862,7 @@ func (s *Server) verifyProof(ps request.Params) (interface{}, *response.Error) {
 	vp := new(result.VerifyProof)
 	val, ok := mpt.VerifyProof(root, p.Key, p.Proof)
 	if ok {
-		var si state.StorageItem
-		r := io.NewBinReaderFromBuf(val)
-		si.DecodeBinary(r)
-		if r.Err != nil {
-			return nil, response.NewInternalServerError("invalid item in trie", r.Err)
-		}
-		vp.Value = si
+		vp.Value = val
 	}
 	return vp, nil
 }