From cdd1cb8cc00dc48ead749451c705fed69093f5d5 Mon Sep 17 00:00:00 2001
From: turtlebasket <turtlebasket@gmail.com>
Date: Mon, 29 Aug 2022 01:03:09 +0000
Subject: [PATCH] fix memdb encode/decode EOF issue

---
 x/cosmostest/memdb/biddb.go | 20 ++++----------------
 1 file changed, 4 insertions(+), 16 deletions(-)

diff --git a/x/cosmostest/memdb/biddb.go b/x/cosmostest/memdb/biddb.go
index ba482b7..65a65be 100644
--- a/x/cosmostest/memdb/biddb.go
+++ b/x/cosmostest/memdb/biddb.go
@@ -31,9 +31,6 @@ func (b *bidDB) Mount() {
 
 // Add a bid to the bid list under specified auction key.
 func (b *bidDB) AddBid(auctionId string, bid *types.Bid) error {
-	buf := bytes.NewBuffer([]byte{})
-	enc := gob.NewEncoder(buf)
-	dec := gob.NewDecoder(buf)
 	k := []byte(auctionId)
 
 	err := b.db.Update(func(txn *badger.Txn) error {
@@ -48,10 +45,7 @@ func (b *bidDB) AddBid(auctionId string, bid *types.Bid) error {
 			}
 			// key found -> decode contents to bids
 			bidsOld.Value(func(val []byte) error {
-				buf.Reset()
-				if _, err := buf.Read(val); err != nil {
-					return err
-				}
+				dec := gob.NewDecoder(bytes.NewReader(val))
 				if err := dec.Decode(&bids); err != nil {
 					return err
 				}
@@ -62,7 +56,8 @@ func (b *bidDB) AddBid(auctionId string, bid *types.Bid) error {
 		// append bid
 		bids = append(bids, bid)
 		// encode new list
-		buf.Reset()
+		buf := bytes.NewBuffer(nil)
+		enc := gob.NewEncoder(buf)
 		if err := enc.Encode(&bids); err != nil {
 			return err
 		}
@@ -80,8 +75,6 @@ func (b *bidDB) AddBid(auctionId string, bid *types.Bid) error {
 // Get the highest bid in the list under specified auction key.
 func (b *bidDB) GetHighestBid(auctionId string) (*types.Bid, error) {
 	k := []byte(auctionId)
-	buf := bytes.NewBuffer([]byte{})
-	dec := gob.NewDecoder(buf)
 
 	var bid *types.Bid
 
@@ -92,13 +85,8 @@ func (b *bidDB) GetHighestBid(auctionId string) (*types.Bid, error) {
 		}
 
 		err = bidData.Value(func(val []byte) error {
-			buf.Reset()
-			if _, err := buf.Read(val); err != nil {
-				return err
-			}
-			// panic(len(val))
-
 			var bids []*types.Bid
+			dec := gob.NewDecoder(bytes.NewReader(val))
 			if err := dec.Decode(&bids); err != nil {
 				return err
 			}