From 1e684933712107fd8e66b23539161443e3a19b04 Mon Sep 17 00:00:00 2001
From: Martin Boehm <martin.boehm@1mbsoftware.net>
Date: Sun, 22 May 2022 17:08:40 +0200
Subject: [PATCH] Litecoin: Change serialization of tx in cache, #770

It is necessary to remove all transactions from the cache DB column
using command like
`/opt/coins/blockbook/litecoin/bin/ldb --db=/opt/coins/data/litecoin/blockbook/db --hex --column_family=transactions deleterange 0x00 0xffffffffffffffffffff`
or do full db resync. The old data in the transaction cache are not compatible.
---
 bchain/coins/litecoin/litecoinparser.go      | 16 +++++++++++++++-
 bchain/coins/litecoin/litecoinparser_test.go |  3 ++-
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/bchain/coins/litecoin/litecoinparser.go b/bchain/coins/litecoin/litecoinparser.go
index d254e63e..67800540 100644
--- a/bchain/coins/litecoin/litecoinparser.go
+++ b/bchain/coins/litecoin/litecoinparser.go
@@ -40,11 +40,15 @@ func init() {
 // LitecoinParser handle
 type LitecoinParser struct {
 	*btc.BitcoinLikeParser
+	baseparser *bchain.BaseParser
 }
 
 // NewLitecoinParser returns new LitecoinParser instance
 func NewLitecoinParser(params *chaincfg.Params, c *btc.Configuration) *LitecoinParser {
-	return &LitecoinParser{BitcoinLikeParser: btc.NewBitcoinLikeParser(params, c)}
+	return &LitecoinParser{
+		BitcoinLikeParser: btc.NewBitcoinLikeParser(params, c),
+		baseparser:        &bchain.BaseParser{},
+	}
 }
 
 // GetChainParams contains network parameters for the main Litecoin network,
@@ -125,3 +129,13 @@ func (p *LitecoinParser) ParseTxFromJson(msg json.RawMessage) (*bchain.Tx, error
 
 	return &tx, nil
 }
+
+// PackTx packs transaction to byte array using protobuf
+func (p *LitecoinParser) PackTx(tx *bchain.Tx, height uint32, blockTime int64) ([]byte, error) {
+	return p.baseparser.PackTx(tx, height, blockTime)
+}
+
+// UnpackTx unpacks transaction from protobuf byte array
+func (p *LitecoinParser) UnpackTx(buf []byte) (*bchain.Tx, uint32, error) {
+	return p.baseparser.UnpackTx(buf)
+}
diff --git a/bchain/coins/litecoin/litecoinparser_test.go b/bchain/coins/litecoin/litecoinparser_test.go
index f051f2ee..94ed68ba 100644
--- a/bchain/coins/litecoin/litecoinparser_test.go
+++ b/bchain/coins/litecoin/litecoinparser_test.go
@@ -224,13 +224,14 @@ func TestGetAddressesFromAddrDesc_Mainnet(t *testing.T) {
 var (
 	testTx1 bchain.Tx
 
-	testTxPacked1 = "0001e4538ba8d7aa2002000000031e1977dc524bec5929e95d8d0946812944b7b5bda12f5b99fdf557773f2ee65e0100000000ffffffff8a398e44546dce0245452b90130e86832b21fd68f26662bc33aeb7c6c115d23c1900000000ffffffffb807ab93a7fcdff7af6d24581a4a18aa7c1db1ebecba2617a6805b009513940f0c00000000ffffffff020001a04a000000001976a9141ae882e788091732da6910595314447c9e38bd8d88ac27440f00000000001976a9146b474cbf0f6004329b630bdd4798f2c23d1751b688ac00000000"
+	testTxPacked1 = "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"
 )
 
 func init() {
 	testTx1 = bchain.Tx{
 		Hex:       "02000000031e1977dc524bec5929e95d8d0946812944b7b5bda12f5b99fdf557773f2ee65e0100000000ffffffff8a398e44546dce0245452b90130e86832b21fd68f26662bc33aeb7c6c115d23c1900000000ffffffffb807ab93a7fcdff7af6d24581a4a18aa7c1db1ebecba2617a6805b009513940f0c00000000ffffffff020001a04a000000001976a9141ae882e788091732da6910595314447c9e38bd8d88ac27440f00000000001976a9146b474cbf0f6004329b630bdd4798f2c23d1751b688ac00000000",
 		Blocktime: 1519053456,
+		Time:      1519053456,
 		Txid:      "1c50c1770374d7de2f81a87463a5225bb620d25fd467536223a5b715a47c9e32",
 		LockTime:  0,
 		Version:   2,