From 63df71ea72a17c56cd1c929109324d7f631fdf6d Mon Sep 17 00:00:00 2001
From: Aaron Schulz <aschulz@wikimedia.org>
Date: Sun, 10 May 2015 12:49:43 -0700
Subject: [PATCH] Set isExpensiveToThumbnail for the djvu handler

* This makes FileRenderExpensive pool logic apply for large files
  to cut down on DB load from getMetaTree()

Bug: T96360
Change-Id: If892d77077607ffcaba0510355175a1e4d780ae9
---
 includes/media/DjVu.php | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/includes/media/DjVu.php b/includes/media/DjVu.php
index 011fb2a046..5b579523a5 100644
--- a/includes/media/DjVu.php
+++ b/includes/media/DjVu.php
@@ -27,6 +27,8 @@
  * @ingroup Media
  */
 class DjVuHandler extends ImageHandler {
+	const EXPENSIVE_SIZE_LIMIT = 10485760; // 10MiB
+
 	/**
 	 * @return bool
 	 */
@@ -49,6 +51,15 @@ class DjVuHandler extends ImageHandler {
 		return true;
 	}
 
+	/**
+	 * True if creating thumbnails from the file is large or otherwise resource-intensive.
+	 * @param File $file
+	 * @return bool
+	 */
+	public function isExpensiveToThumbnail( $file ) {
+		return $file->getSize() > static::EXPENSIVE_SIZE_LIMIT;
+	}
+
 	/**
 	 * @param File $file
 	 * @return bool
-- 
2.20.1