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