From ac1582319a32178d37d24fdd34752365c71a91ca Mon Sep 17 00:00:00 2001
From: Ruslan Kuprieiev <kupruser@gmail.com>
Date: Tue, 9 May 2023 00:36:24 +0300
Subject: [PATCH] index: make sure storage exists

Related #341
---
 src/dvc_data/index/index.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/dvc_data/index/index.py b/src/dvc_data/index/index.py
index 1b1e868a..4fec9387 100644
--- a/src/dvc_data/index/index.py
+++ b/src/dvc_data/index/index.py
@@ -1,3 +1,5 @@
+import errno
+import os
 from abc import ABC, abstractmethod
 from dataclasses import dataclass
 from functools import cached_property
@@ -507,6 +509,9 @@ def _load_from_file_storage(trie, root_entry, storage):
 
     fs, path = storage.get(root_entry)
 
+    if not fs.exists(path):
+        raise FileNotFoundError(errno.ENOENT, os.strerror(errno.ENOENT), path)
+
     for entry in build_entries(path, fs):
         entry.key = root_entry.key + entry.key
         trie[entry.key] = entry