From 43c461da82e5202bb53fb9add8c0755c71403285 Mon Sep 17 00:00:00 2001
From: Ben Pennell <bbpennel@email.unc.edu>
Date: Wed, 16 Oct 2024 14:05:11 -0400
Subject: [PATCH] Use a try-with-resource block when getting the stream of
 files in derivative directory to avoid file handle leak

---
 .../illinois/library/cantaloupe/cache/FilesystemCache.java    | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/main/java/edu/illinois/library/cantaloupe/cache/FilesystemCache.java b/src/main/java/edu/illinois/library/cantaloupe/cache/FilesystemCache.java
index ab0dc383a..7b1397ddb 100644
--- a/src/main/java/edu/illinois/library/cantaloupe/cache/FilesystemCache.java
+++ b/src/main/java/edu/illinois/library/cantaloupe/cache/FilesystemCache.java
@@ -508,8 +508,8 @@ Set<Path> getDerivativeImageFiles(Identifier identifier)
                 hashedPathFragment(identifier.toString()));
         final String expectedNamePrefix =
                 StringUtils.md5(identifier.toString());
-        try {
-            return Files.list(cachePath)
+        try (final var fileStream = Files.list(cachePath)) {
+            return fileStream
                     .filter(p -> p.getFileName().toString().startsWith(expectedNamePrefix))
                     .collect(Collectors.toUnmodifiableSet());
         } catch (NoSuchFileException e) {