[#189] metabase: Implement DumpInfo method

Implement method to get the information about the metabase.

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>

pkg/local_object_storage/metabase/db.go

@@ -10,7 +10,7 @@ import (
 
 // DB represents local metabase of storage node.
 type DB struct {
-	path string
+	info Info
 
 	*cfg
 
@@ -41,7 +41,9 @@ func NewDB(opts ...Option) *DB {
 	}
 
 	return &DB{
-		path: c.boltDB.Path(),
+		info: Info{
+			Path: c.boltDB.Path(),
+		},
 		cfg: c,
 		matchers: map[object.SearchMatchType]func(string, string, string) bool{
 			object.MatchUnknown:     unknownMatcher,
@@ -54,11 +56,6 @@ func (db *DB) Close() error {
 	return db.boltDB.Close()
 }
 
-// Path returns the path to meta database.
-func (db *DB) Path() string {
-	return db.path
-}
-
 func stringEqualMatcher(key, objVal, filterVal string) bool {
 	switch key {
 	default:

pkg/local_object_storage/metabase/db_test.go

@@ -186,7 +186,7 @@ func TestDB_Path(t *testing.T) {
 
 	defer releaseDB(db)
 
-	require.Equal(t, path, db.Path())
+	require.Equal(t, path, db.DumpInfo().Path)
 }
 
 func newDB(t testing.TB) *DB {
@@ -200,7 +200,7 @@ func newDB(t testing.TB) *DB {
 
 func releaseDB(db *DB) {
 	db.Close()
-	os.Remove(db.Path())
+	os.Remove(db.DumpInfo().Path)
 }
 
 func TestSelectNonExistentAttributes(t *testing.T) {

pkg/local_object_storage/metabase/info.go

@@ -0,0 +1,12 @@
+package meta
+
+// Info groups the information about DB.
+type Info struct {
+	// Full path to the metabase.
+	Path string
+}
+
+// DumpInfo returns information about the DB.
+func (db *DB) DumpInfo() Info {
+	return db.info
+}