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<?php namespace Elementor\Core\Base;
use Elementor\Plugin; use Elementor\Core\Base\BackgroundProcess\WP_Background_Process;
/** * Based on https://github.com/woocommerce/woocommerce/blob/master/includes/abstracts/class-wc-background-process.php * & https://github.com/woocommerce/woocommerce/blob/master/includes/class-wc-background-updater.php */
defined( 'ABSPATH' ) || exit;
/** * WC_Background_Process class. */ abstract class Background_Task extends WP_Background_Process { protected $current_item;
/** * Dispatch updater. * * Updater will still run via cron job if this fails for any reason. */ public function dispatch() { $dispatched = parent::dispatch();
if ( is_wp_error( $dispatched ) ) { wp_die( esc_html( $dispatched ) ); } }
public function query_col( $sql ) { global $wpdb;
// Add Calc. $item = $this->get_current_item(); if ( empty( $item['total'] ) ) { $sql = preg_replace( '/^SELECT/', 'SELECT SQL_CALC_FOUND_ROWS', $sql ); }
// Add offset & limit. $sql = preg_replace( '/;$/', '', $sql ); $sql .= ' LIMIT %d, %d;';
$results = $wpdb->get_col( $wpdb->prepare( $sql, $this->get_current_offset(), $this->get_limit() ) ); // phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared
if ( ! empty( $results ) ) { $this->set_total(); }
return $results; }
public function should_run_again( $updated_rows ) { return count( $updated_rows ) === $this->get_limit(); }
public function get_current_offset() { $limit = $this->get_limit(); return ( $this->current_item['iterate_num'] - 1 ) * $limit; }
public function get_limit() { return $this->manager->get_query_limit(); }
public function set_total() { global $wpdb;
if ( empty( $this->current_item['total'] ) ) { $total_rows = $wpdb->get_var( 'SELECT FOUND_ROWS();' ); $total_iterates = ceil( $total_rows / $this->get_limit() ); $this->current_item['total'] = $total_iterates; } }
/** * Complete * * Override if applicable, but ensure that the below actions are * performed, or, call parent::complete(). */ protected function complete() { $this->manager->on_runner_complete( true );
parent::complete(); }
public function continue_run() { // Used to fire an action added in WP_Background_Process::_construct() that calls WP_Background_Process::handle_cron_healthcheck(). // This method will make sure the database updates are executed even if cron is disabled. Nothing will happen if the updates are already running. do_action( $this->cron_hook_identifier ); }
/** * @return mixed */ public function get_current_item() { return $this->current_item; }
/** * Get batch. * * @return \stdClass Return the first batch from the queue. */ protected function get_batch() { $batch = parent::get_batch(); $batch->data = array_filter( (array) $batch->data );
return $batch; }
/** * Handle cron healthcheck * * Restart the background process if not already running * and data exists in the queue. */ public function handle_cron_healthcheck() { if ( $this->is_process_running() ) { // Background process already running. return; }
if ( $this->is_queue_empty() ) { // No data to process. $this->clear_scheduled_event(); return; }
$this->handle(); }
/** * Schedule fallback event. */ protected function schedule_event() { if ( ! wp_next_scheduled( $this->cron_hook_identifier ) ) { wp_schedule_event( time() + 10, $this->cron_interval_identifier, $this->cron_hook_identifier ); } }
/** * Is the updater running? * * @return boolean */ public function is_running() { return false === $this->is_queue_empty(); }
/** * See if the batch limit has been exceeded. * * @return bool */ protected function batch_limit_exceeded() { return $this->time_exceeded() || $this->memory_exceeded(); }
/** * Handle. * * Pass each queue item to the task handler, while remaining * within server memory and time limit constraints. */ protected function handle() { $this->manager->on_runner_start();
$this->lock_process();
do { $batch = $this->get_batch();
foreach ( $batch->data as $key => $value ) { $task = $this->task( $value );
if ( false !== $task ) { $batch->data[ $key ] = $task; } else { unset( $batch->data[ $key ] ); }
if ( $this->batch_limit_exceeded() ) { // Batch limits reached. break; } }
// Update or delete current batch. if ( ! empty( $batch->data ) ) { $this->update( $batch->key, $batch->data ); } else { $this->delete( $batch->key ); } } while ( ! $this->batch_limit_exceeded() && ! $this->is_queue_empty() );
$this->unlock_process();
// Start next batch or complete process. if ( ! $this->is_queue_empty() ) { $this->dispatch(); } else { $this->complete(); } }
/** * Use the protected `is_process_running` method as a public method. * @return bool */ public function is_process_locked() { return $this->is_process_running(); }
public function handle_immediately( $callbacks ) { $this->manager->on_runner_start();
$this->lock_process();
foreach ( $callbacks as $callback ) { $item = [ 'callback' => $callback, ];
do { $item = $this->task( $item ); } while ( $item ); }
$this->unlock_process(); }
/** * Task * * Override this method to perform any actions required on each * queue item. Return the modified item for further processing * in the next pass through. Or, return false to remove the * item from the queue. * * @param array $item * * @return array|bool */ protected function task( $item ) { $result = false;
if ( ! isset( $item['iterate_num'] ) ) { $item['iterate_num'] = 1; }
$logger = Plugin::$instance->logger->get_logger(); $callback = $this->format_callback_log( $item );
if ( is_callable( $item['callback'] ) ) { $progress = '';
if ( 1 < $item['iterate_num'] ) { if ( empty( $item['total'] ) ) { $progress = sprintf( '(x%s)', $item['iterate_num'] ); } else { $percent = ceil( $item['iterate_num'] / ( $item['total'] / 100 ) ); $progress = sprintf( '(%s of %s, %s%%)', $item['iterate_num'], $item['total'], $percent ); } }
$logger->info( sprintf( '%s Start %s', $callback, $progress ) );
$this->current_item = $item;
$result = (bool) call_user_func( $item['callback'], $this );
// get back the updated item. $item = $this->current_item; $this->current_item = null;
if ( $result ) { if ( empty( $item['total'] ) ) { $logger->info( sprintf( '%s callback needs to run again', $callback ) ); } elseif ( 1 === $item['iterate_num'] ) { $logger->info( sprintf( '%s callback needs to run more %d times', $callback, $item['total'] - $item['iterate_num'] ) ); }
$item['iterate_num']++; } else { $logger->info( sprintf( '%s Finished', $callback ) ); } } else { $logger->notice( sprintf( 'Could not find %s callback', $callback ) ); }
return $result ? $item : false; }
/** * Schedule cron healthcheck. * * @param array $schedules Schedules. * @return array */ public function schedule_cron_healthcheck( $schedules ) { $interval = apply_filters( $this->identifier . '_cron_interval', 5 );
// Adds every 5 minutes to the existing schedules. $schedules[ $this->identifier . '_cron_interval' ] = [ 'interval' => MINUTE_IN_SECONDS * $interval, 'display' => sprintf( /* translators: %d: Interval in minutes. */ esc_html__( 'Every %d minutes', 'elementor' ), $interval ), ];
return $schedules; }
/** * See if the batch limit has been exceeded. * * @return bool */ public function is_memory_exceeded() { return $this->memory_exceeded(); }
/** * Delete all batches. * * @return self */ public function delete_all_batches() { global $wpdb;
$table = $wpdb->options; $column = 'option_name';
if ( is_multisite() ) { $table = $wpdb->sitemeta; $column = 'meta_key'; }
$key = $wpdb->esc_like( $this->identifier . '_batch_' ) . '%';
$wpdb->query( $wpdb->prepare( "DELETE FROM {$table} WHERE {$column} LIKE %s", $key ) ); // @codingStandardsIgnoreLine.
return $this; }
/** * Kill process. * * Stop processing queue items, clear cronjob and delete all batches. */ public function kill_process() { if ( ! $this->is_queue_empty() ) { $this->delete_all_batches(); wp_clear_scheduled_hook( $this->cron_hook_identifier ); } }
public function set_current_item( $item ) { $this->current_item = $item; }
protected function format_callback_log( $item ) { return implode( '::', (array) $item['callback'] ); }
/** * @var \Elementor\Core\Base\Background_Task_Manager */ protected $manager;
public function __construct( $manager ) { $this->manager = $manager; // Uses unique prefix per blog so each blog has separate queue. $this->prefix = 'elementor_' . get_current_blog_id(); $this->action = $this->manager->get_action();
parent::__construct(); } }
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