Fix config initialization

cmd/stateSnapshot.go

@@ -38,8 +38,7 @@ var stateSnapshotCmd = &cobra.Command{
 }
 
 func stateSnapshot() {
-	snapConfig := &snapshot.Config{}
-	snapConfig.Init()
+	snapConfig := snapshot.NewConfig()
 	pgDB, err := snapshot.NewPostgresDB(snapConfig.DB)
 	if err != nil {
 		logWithCommand.Fatal(err)

pkg/snapshot/config.go

@@ -30,6 +30,12 @@ const (
 	LVL_DB_PATH       = "LVL_DB_PATH"
 )
 
+// Config contains params for both databases the service uses
+type Config struct {
+	DB  *DBConfig
+	Eth *EthConfig
+}
+
 // DBConfig is config parameters for DB.
 type DBConfig struct {
 	Node       ethNode.Info
@@ -43,9 +49,10 @@ type EthConfig struct {
 	AncientDBPath string
 }
 
-type Config struct {
-	DB  *DBConfig
-	Eth *EthConfig
+func NewConfig() *Config {
+	ret := &Config{&DBConfig{}, &EthConfig{}}
+	ret.Init()
+	return ret
 }
 
 // Init Initialises config