From 5761e09dd23416b97a8e59e44f5efea5fd262834 Mon Sep 17 00:00:00 2001
From: Piotr M <mrow4a@yahoo.com>
Date: Wed, 29 Mar 2017 10:27:02 +0200
Subject: [PATCH] Optimize put - dont fetch metadata for part file in
 checksuming

---
 .../Files/Storage/Wrapper/Checksum.php        | 22 ++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/lib/private/Files/Storage/Wrapper/Checksum.php b/lib/private/Files/Storage/Wrapper/Checksum.php
index a4d56e6c32a5..ed39642fd7bb 100644
--- a/lib/private/Files/Storage/Wrapper/Checksum.php
+++ b/lib/private/Files/Storage/Wrapper/Checksum.php
@@ -148,6 +148,22 @@ private static function getChecksumsInDbFormat($path) {
 		return rtrim($checksumString);
 	}
 
+	/**
+	 * check if the file metadata should not be fetched
+	 * NOTE: files with a '.part' extension are ignored as well!
+	 *       prevents unfinished put requests to fetch metadata which does not exists
+	 *
+	 * @param string $file
+	 * @return boolean
+	 */
+	public static function isPartialFile($file) {
+		if (pathinfo($file, PATHINFO_EXTENSION) === 'part') {
+			return true;
+		}
+
+		return false;
+	}
+
 	/**
 	 * @param string $path
 	 * @param string $data
@@ -168,7 +184,11 @@ public function file_put_contents($path, $data) {
 	 * @return array
 	 */
 	public function getMetaData($path) {
-		$parentMetaData = $this->getWrapperStorage()->getMetaData($path);
+		// Check if it is partial file. Partial file metadata are only checksums
+		$parentMetaData = [];
+		if(!self::isPartialFile($path)) {
+			$parentMetaData = $this->getWrapperStorage()->getMetaData($path);
+		}
 		$parentMetaData['checksum'] = self::getChecksumsInDbFormat($path);
 
 		if (!isset($parentMetaData['mimetype'])) {