first

wp-content/plugins/ewww-image-optimizer/classes/class-background-process-image.php

@@ -0,0 +1,96 @@
+<?php
+/**
+ * Class for Background optimization of individual images, used by scheduled optimization.
+ *
+ * @link https://ewww.io
+ * @package EWWW_Image_Optimizer
+ */
+
+namespace EWWW;
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit;
+}
+
+/**
+ * Processes a single image in background/async mode.
+ *
+ * @see EWWW\Background_Process
+ */
+class Background_Process_Image extends Background_Process {
+
+	/**
+	 * The action name used to trigger this class extension.
+	 *
+	 * @access protected
+	 * @var string $action
+	 */
+	protected $action = 'ewwwio_image_optimize';
+
+	/**
+	 * The queue name for this class extension.
+	 *
+	 * @access protected
+	 * @var string $action
+	 */
+	protected $active_queue = 'single-async';
+
+	/**
+	 * Attempts limit, shorter for scheduled opt.
+	 *
+	 * @var int
+	 * @access protected
+	 */
+	protected $max_attempts = 5;
+
+	/**
+	 * Runs optimization for a file from the image queue.
+	 *
+	 * @access protected
+	 *
+	 * @param string $item The filename of the attachment.
+	 * @return bool False indicates completion.
+	 */
+	protected function task( $item ) {
+		session_write_close();
+		$id = (int) $item['id'];
+		ewwwio_debug_message( "background processing $id" );
+		$file_path = ewww_image_optimizer_find_file_by_id( $id );
+		if ( $file_path ) {
+			$attachment = array(
+				'id'   => $id,
+				'path' => $file_path,
+			);
+			ewwwio_debug_message( "processing background optimization request for $file_path" );
+			ewww_image_optimizer_aux_images_loop( $attachment, true );
+		} else {
+			ewwwio_debug_message( "could not find file to process background optimization request for $id" );
+			return false;
+		}
+		$delay = (int) ewww_image_optimizer_get_option( 'ewww_image_optimizer_delay' );
+		if ( $delay && ewww_image_optimizer_function_exists( 'sleep' ) ) {
+			sleep( $delay );
+		}
+		return false;
+	}
+
+	/**
+	 * Runs failure routine for an item from the queue.
+	 *
+	 * @access protected
+	 *
+	 * @param array $item The id of the attachment, how many attempts have been made to process
+	 *                    the item and whether it is a new upload.
+	 */
+	protected function failure( $item ) {
+		if ( empty( $item['id'] ) ) {
+			return;
+		}
+		global $wpdb;
+		$file_path = ewww_image_optimizer_find_file_by_id( $item['id'] );
+		if ( $file_path ) {
+			ewww_image_optimizer_add_file_exclusion( $file_path );
+		}
+		$wpdb->query( $wpdb->prepare( "DELETE from $wpdb->ewwwio_images WHERE id=%d pending=1 AND (image_size IS NULL OR image_size = 0)", $item['id'] ) );
+	}
+}