From 09223236f91f1f46433188c8be7f0c59594beb14 Mon Sep 17 00:00:00 2001
From: Roman Khimov <roman@nspcc.ru>
Date: Thu, 12 Dec 2019 21:17:13 +0300
Subject: [PATCH] core: add Persist() to dao()

Hide its internals a little, which is gonna be useful for future composition.
---
 pkg/core/blockchain.go | 6 +++---
 pkg/core/dao.go        | 6 ++++++
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/pkg/core/blockchain.go b/pkg/core/blockchain.go
index 3ce0b486e..e92016dc6 100644
--- a/pkg/core/blockchain.go
+++ b/pkg/core/blockchain.go
@@ -505,7 +505,7 @@ func (bc *Blockchain) storeBlock(block *Block) error {
 			v.LoadScript(t.Script)
 			err := v.Run()
 			if !v.HasFailed() {
-				_, err := systemInterop.dao.store.Persist()
+				_, err := systemInterop.dao.Persist()
 				if err != nil {
 					return errors.Wrap(err, "failed to persist invocation results")
 				}
@@ -554,7 +554,7 @@ func (bc *Blockchain) storeBlock(block *Block) error {
 			}
 		}
 	}
-	_, err := cache.store.Persist()
+	_, err := cache.Persist()
 	if err != nil {
 		return err
 	}
@@ -690,7 +690,7 @@ func (bc *Blockchain) persist() error {
 		err       error
 	)
 
-	persisted, err = bc.dao.store.Persist()
+	persisted, err = bc.dao.Persist()
 	if err != nil {
 		return err
 	}
diff --git a/pkg/core/dao.go b/pkg/core/dao.go
index c6bbd2ddc..846847b7d 100644
--- a/pkg/core/dao.go
+++ b/pkg/core/dao.go
@@ -555,3 +555,9 @@ func (dao *dao) IsDoubleSpend(tx *transaction.Transaction) bool {
 	}
 	return false
 }
+
+// Persist flushes all the changes made into the (supposedly) persistent
+// underlying store.
+func (dao *dao) Persist() (int, error) {
+	return dao.store.Persist()
+}