Add reset method to mimetype loader

Used to solve concurrency issues

3 files changed, 16 insertions, 1 deletions

diff --git a/lib/private/files/cache/scanner.php b/lib/private/files/cache/scanner.php
index f76ef5ba0dd..fb60ee5aa53 100644
--- a/lib/private/files/cache/scanner.php
+++ b/lib/private/files/cache/scanner.php
@@ -377,7 +377,7 @@ class Scanner extends BasicEmitter {
 			// inserted mimetypes but those weren't available yet inside the transaction
 			// To make sure to have the updated mime types in such cases,
 			// we reload them here
-			$this->cache->loadMimetypes();
+			\OC::$server->getMimeTypeLoader()->reset();
 		}
 
 		foreach ($childQueue as $child => $childData) {
diff --git a/lib/private/files/type/loader.php b/lib/private/files/type/loader.php
index df893306615..78bfcf60bff 100644
--- a/lib/private/files/type/loader.php
+++ b/lib/private/files/type/loader.php
@@ -97,6 +97,14 @@ class Loader implements IMimeTypeLoader {
 	}
 
 	/**
+	 * Clear all loaded mimetypes, allow for re-loading
+	 */
+	public function reset() {
+		$this->mimetypes = [];
+		$this->mimetypeIds = [];
+	}
+
+	/**
 	 * Store a mimetype in the DB
 	 *
 	 * @param string $mimetype
diff --git a/lib/public/files/imimetypeloader.php b/lib/public/files/imimetypeloader.php
index 24937ea9b86..6d00c4a0b31 100644
--- a/lib/public/files/imimetypeloader.php
+++ b/lib/public/files/imimetypeloader.php
@@ -56,4 +56,11 @@ interface IMimeTypeLoader {
 	 * @since 8.2.0
 	 */
 	public function exists($mimetype);
+
+	/**
+	 * Clear all loaded mimetypes, allow for re-loading
+	 *
+	 * @since 8.2.0
+	 */
+	public function reset();
 }