From b94ee366e5a345193645bdbab704a5fef4dbcdd6 Mon Sep 17 00:00:00 2001
From: Ben Johnson <benbjohnson@yahoo.com>
Date: Fri, 15 Jan 2021 13:12:15 -0700
Subject: [PATCH] Fix snapshot only restore

---
 db.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/db.go b/db.go
index 38bb50c..772859b 100644
--- a/db.go
+++ b/db.go
@@ -1327,7 +1327,10 @@ func (db *DB) Restore(ctx context.Context, opt RestoreOptions) error {
 			continue
 		}
 
-		if err := db.restoreWAL(ctx, r, generation, index, tmpPath); err != nil {
+		if err := db.restoreWAL(ctx, r, generation, index, tmpPath); os.IsNotExist(err) && index == minWALIndex && index == maxWALIndex {
+			logger.Printf("no wal available, snapshot only")
+			break // snapshot file only, ignore error
+		} else if err != nil {
 			return fmt.Errorf("cannot restore wal: %w", err)
 		}
 	}