diff --git a/cmd/stateSnapshot.go b/cmd/stateSnapshot.go
index 6a28319..ba910f3 100644
--- a/cmd/stateSnapshot.go
+++ b/cmd/stateSnapshot.go
@@ -44,7 +44,12 @@ func stateSnapshot() {
 	if err != nil {
 		logWithCommand.Fatal(err)
 	}
-	snapshotService, err := snapshot.NewSnapshotService(snapConfig.Eth, snapshot.NewPublisher(pgDB))
+	edb, err := snapshot.NewLevelDB(snapConfig.Eth)
+	if err != nil {
+		logWithCommand.Fatal(err)
+	}
+
+	snapshotService, err := snapshot.NewSnapshotService(edb, snapshot.NewPublisher(pgDB))
 	if err != nil {
 		logWithCommand.Fatal(err)
 	}
diff --git a/pkg/snapshot/config.go b/pkg/snapshot/config.go
index b052eb6..c8b00d2 100644
--- a/pkg/snapshot/config.go
+++ b/pkg/snapshot/config.go
@@ -37,6 +37,7 @@ type DBConfig struct {
 	ConnConfig postgres.ConnectionConfig
 }
 
+// EthConfig is config parameters for the chain.
 type EthConfig struct {
 	LevelDBPath   string
 	AncientDBPath string
diff --git a/pkg/snapshot/service.go b/pkg/snapshot/service.go
index 01391f2..61c6b2a 100644
--- a/pkg/snapshot/service.go
+++ b/pkg/snapshot/service.go
@@ -63,13 +63,14 @@ func NewPostgresDB(con *DBConfig) (*postgres.DB, error) {
 	return pgDB, nil
 }
 
-// NewSnapshotService creates Service.
-func NewSnapshotService(con *EthConfig, pub *Publisher) (*Service, error) {
-	edb, err := rawdb.NewLevelDBDatabaseWithFreezer(con.LevelDBPath, 1024, 256, con.AncientDBPath, "eth-pg-ipfs-state-snapshot", false)
-	if err != nil {
-		return nil, err
-	}
+func NewLevelDB(con *EthConfig) (ethdb.Database, error) {
+	return rawdb.NewLevelDBDatabaseWithFreezer(
+		con.LevelDBPath, 1024, 256, con.AncientDBPath, "eth-pg-ipfs-state-snapshot", false,
+	)
+}
 
+// NewSnapshotService creates Service.
+func NewSnapshotService(edb ethdb.Database, pub *Publisher) (*Service, error) {
 	return &Service{
 		ethDB:         edb,
 		stateDB:       state.NewDatabase(edb),
diff --git a/pkg/snapshot/service_test.go b/pkg/snapshot/service_test.go
index b690249..e3789d6 100644
--- a/pkg/snapshot/service_test.go
+++ b/pkg/snapshot/service_test.go
@@ -9,13 +9,13 @@ import (
 )
 
 func testConfig(leveldbpath, ancientdbpath string) *Config {
-	dbParams := postgres.ConnectionParams{}
-	dbParams.Name = "snapshot_test"
-	dbParams.Hostname = "localhost"
-	dbParams.Port = 5432
-	dbParams.User = "tester"
-	dbParams.Password = "test_pw"
-	uri := postgres.DbConnectionString(dbParams)
+	dbParams := postgres.ConnectionParams{
+		Name:     "snapshot_test",
+		Hostname: "localhost",
+		Port:     5432,
+		User:     "tester",
+		Password: "test_pw",
+	}
 	connconfig := postgres.ConnectionConfig{
 		MaxIdle:     0,
 		MaxLifetime: 0,
@@ -32,7 +32,7 @@ func testConfig(leveldbpath, ancientdbpath string) *Config {
 	return &Config{
 		DB: &DBConfig{
 			Node:       nodeinfo,
-			URI:        uri,
+			URI:        postgres.DbConnectionString(dbParams),
 			ConnConfig: connconfig,
 		},
 		Eth: &EthConfig{