126 lines
3.8 KiB
PHP
126 lines
3.8 KiB
PHP
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<?php
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/**
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* Class for Background processing of Media Library images.
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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 media uploads in background/async mode.
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*
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* Uses a db queue system to track uploads to be optimized, handling them one at a time.
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*
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* @see EWWW\Background_Process
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*/
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class Background_Process_Media 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_media_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 = 'media-async';
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/**
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* Runs task for an item from the Media Library queue.
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*
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* Makes sure an image upload has finished processing and has been stored in the database.
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* Then runs the usual media optimization routine on the specified item.
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*
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* @access protected
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* @global bool $ewww_defer True to defer optimization, false otherwise.
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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, the type of attachment, and whether it is a new upload.
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* @return bool|array If the item is not complete, return it. 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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global $ewww_defer;
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$ewww_defer = false;
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$max_attempts = 15;
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$id = $item['id'];
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if ( empty( $item['attempts'] ) ) {
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ewwwio_debug_message( 'first attempt, going to sleep for a bit' );
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$item['attempts'] = 0;
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sleep( 1 ); // On the first attempt, hold off and wait for the db to catch up.
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}
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$type = get_post_mime_type( $id );
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if ( empty( $type ) ) {
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ewwwio_debug_message( "mime is missing, requeueing {$item['attempts']}" );
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sleep( 4 );
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return $item;
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}
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ewwwio_debug_message( "background processing $id, type: " . $type );
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$image_types = array(
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'image/jpeg',
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'image/png',
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'image/gif',
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);
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if ( in_array( $type, $image_types, true ) && $item['new'] && class_exists( 'wpCloud\StatelessMedia\EWWW' ) ) {
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$meta = wp_get_attachment_metadata( $id );
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} else {
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// This is unfiltered for performance, because we don't often need filtered meta.
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$meta = wp_get_attachment_metadata( $id, true );
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}
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if ( in_array( $type, $image_types, true ) && empty( $meta ) ) {
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ewwwio_debug_message( "metadata is missing, requeueing {$item['attempts']}" );
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sleep( 4 );
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return $item;
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}
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$meta = ewww_image_optimizer_resize_from_meta_data( $meta, $id, true, $item['new'] );
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if ( ! empty( $meta['processing'] ) ) {
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ewwwio_debug_message( 'image not finished, try again' );
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return $item;
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}
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if ( class_exists( 'wpCloud\StatelessMedia\EWWW' ) ) {
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ewwwio_debug_message( 'async optimize complete, triggering wp_update_attachment_metadata filter with existing meta' );
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$meta = apply_filters( 'wp_update_attachment_metadata', wp_get_attachment_metadata( $image->attachment_id ), $image->attachment_id );
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} else {
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ewwwio_debug_message( 'async optimize complete, running wp_update_attachment_metadata()' );
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wp_update_attachment_metadata( $id, $meta );
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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 Media Library 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( $item['id'] ) ) {
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return;
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}
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$file_path = false;
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$meta = wp_get_attachment_metadata( $item['id'] );
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if ( ! empty( $meta ) ) {
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list( $file_path, $upload_path ) = ewww_image_optimizer_attachment_path( $meta, $item['id'] );
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}
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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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}
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}
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