From 38e969f1072f5f8d7dff11f4acb6d5af543fc59b Mon Sep 17 00:00:00 2001
From: Egor Lysenko <uprendis@gmail.com>
Date: Tue, 21 Jun 2022 17:31:20 +0400
Subject: [PATCH] add cache for genesis ID

---
 gossip/service.go     | 1 +
 gossip/store.go       | 1 +
 gossip/store_block.go | 6 ++++++
 3 files changed, 8 insertions(+)

diff --git a/gossip/service.go b/gossip/service.go
index e3129cfb1..267c2b135 100644
--- a/gossip/service.go
+++ b/gossip/service.go
@@ -210,6 +210,7 @@ func newService(config Config, store *Store, blockProc BlockProc, engine lachesi
 	svc.store.GetLastEVs()
 	svc.store.GetLlrState()
 	svc.store.GetUpgradeHeights()
+	svc.store.GetGenesisID()
 	netVerStore := verwatcher.NewStore(store.table.NetworkVersion)
 	netVerStore.GetNetworkVersion()
 	netVerStore.GetMissedVersion()
diff --git a/gossip/store.go b/gossip/store.go
index 8c71884ef..1da5fe89f 100644
--- a/gossip/store.go
+++ b/gossip/store.go
@@ -79,6 +79,7 @@ type Store struct {
 		LlrState               atomic.Value // store by value
 		KvdbEvmSnap            atomic.Value // store by pointer
 		UpgradeHeights         atomic.Value // store by pointer
+		Genesis                atomic.Value // store by value
 	}
 
 	mutex struct {
diff --git a/gossip/store_block.go b/gossip/store_block.go
index 16e873c58..7e7840f8d 100644
--- a/gossip/store_block.go
+++ b/gossip/store_block.go
@@ -13,6 +13,10 @@ import (
 )
 
 func (s *Store) GetGenesisID() *hash.Hash {
+	if v := s.cache.Genesis.Load(); v != nil {
+		val := v.(hash.Hash)
+		return &val
+	}
 	valBytes, err := s.table.Genesis.Get([]byte("g"))
 	if err != nil {
 		s.Log.Crit("Failed to get key-value", "err", err)
@@ -21,6 +25,7 @@ func (s *Store) GetGenesisID() *hash.Hash {
 		return nil
 	}
 	val := hash.BytesToHash(valBytes)
+	s.cache.Genesis.Store(val)
 	return &val
 }
 
@@ -29,6 +34,7 @@ func (s *Store) SetGenesisID(val hash.Hash) {
 	if err != nil {
 		s.Log.Crit("Failed to put key-value", "err", err)
 	}
+	s.cache.Genesis.Store(val)
 }
 
 // SetBlock stores chain block.