From 488295f56fc00699e5869cb63ad9bf2d6d0fed82 Mon Sep 17 00:00:00 2001
From: Roman Krasiuk <rokrassyuk@gmail.com>
Date: Sun, 19 Mar 2023 17:06:24 +0200
Subject: [PATCH] chore(blockchain_tree): wrap tree database in `Arc` (#1843)

---
 crates/executor/src/blockchain_tree/externals.rs | 9 +++++++--
 crates/executor/src/blockchain_tree/mod.rs       | 2 +-
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/crates/executor/src/blockchain_tree/externals.rs b/crates/executor/src/blockchain_tree/externals.rs
index 8df3f590f9..874760ff42 100644
--- a/crates/executor/src/blockchain_tree/externals.rs
+++ b/crates/executor/src/blockchain_tree/externals.rs
@@ -17,7 +17,7 @@ use std::sync::Arc;
 #[derive(Debug)]
 pub struct TreeExternals<DB, C, EF> {
     /// The database, used to commit the canonical chain, or unwind it.
-    pub db: DB,
+    pub db: Arc<DB>,
     /// The consensus engine.
     pub consensus: C,
     /// The executor factory to execute blocks with.
@@ -28,7 +28,12 @@ pub struct TreeExternals<DB, C, EF> {
 
 impl<DB, C, EF> TreeExternals<DB, C, EF> {
     /// Create new tree externals.
-    pub fn new(db: DB, consensus: C, executor_factory: EF, chain_spec: Arc<ChainSpec>) -> Self {
+    pub fn new(
+        db: Arc<DB>,
+        consensus: C,
+        executor_factory: EF,
+        chain_spec: Arc<ChainSpec>,
+    ) -> Self {
         Self { db, consensus, executor_factory, chain_spec }
     }
 }
diff --git a/crates/executor/src/blockchain_tree/mod.rs b/crates/executor/src/blockchain_tree/mod.rs
index 521111ea84..481c60d77d 100644
--- a/crates/executor/src/blockchain_tree/mod.rs
+++ b/crates/executor/src/blockchain_tree/mod.rs
@@ -645,7 +645,7 @@ mod tests {
 
     fn setup_externals(
         exec_res: Vec<PostState>,
-    ) -> TreeExternals<Arc<Env<WriteMap>>, Arc<TestConsensus>, TestExecutorFactory> {
+    ) -> TreeExternals<Env<WriteMap>, Arc<TestConsensus>, TestExecutorFactory> {
         let db = create_test_rw_db();
         let consensus = Arc::new(TestConsensus::default());
         let chain_spec = Arc::new(