<?php
if (!defined('ABSPATH')) exit;
class ActionScheduler_QueueRunner extends ActionScheduler_Abstract_QueueRunner {
const WP_CRON_HOOK = 'action_scheduler_run_queue';
const WP_CRON_SCHEDULE = 'every_minute';
protected $async_request;
private static $runner = null;
public static function instance() {
if ( empty(self::$runner) ) {
$class = apply_filters('action_scheduler_queue_runner_class', 'ActionScheduler_QueueRunner');
self::$runner = new $class();
}
return self::$runner;
}
public function __construct( ActionScheduler_Store $store = null, ActionScheduler_FatalErrorMonitor $monitor = null, ActionScheduler_QueueCleaner $cleaner = null, ActionScheduler_AsyncRequest_QueueRunner $async_request = null ) {
parent::__construct( $store, $monitor, $cleaner );
if ( is_null( $async_request ) ) {
$async_request = new ActionScheduler_AsyncRequest_QueueRunner( $this->store );
}
$this->async_request = $async_request;
}
public function init() {
add_filter( 'cron_schedules', array( self::instance(), 'add_wp_cron_schedule' ) );
// Check for and remove any WP Cron hook scheduled by Action Scheduler < 3.0.0, which didn't include the $context param
$next_timestamp = wp_next_scheduled( self::WP_CRON_HOOK );
if ( $next_timestamp ) {
wp_unschedule_event( $next_timestamp, self::WP_CRON_HOOK );
}
$cron_context = array( 'WP Cron' );
if ( ! wp_next_scheduled( self::WP_CRON_HOOK, $cron_context ) ) {
$schedule = apply_filters( 'action_scheduler_run_schedule', self::WP_CRON_SCHEDULE );
wp_schedule_event( time(), $schedule, self::WP_CRON_HOOK, $cron_context );
}
add_action( self::WP_CRON_HOOK, array( self::instance(), 'run' ) );
$this->hook_dispatch_async_request();
}
public function hook_dispatch_async_request() {
add_action( 'shutdown', array( $this, 'maybe_dispatch_async_request' ) );
}
public function unhook_dispatch_async_request() {
remove_action( 'shutdown', array( $this, 'maybe_dispatch_async_request' ) );
}
public function maybe_dispatch_async_request() {
if ( is_admin() && ! ActionScheduler::lock()->is_locked( 'async-request-runner' ) ) {
// Only start an async queue at most once every 60 seconds
ActionScheduler::lock()->set( 'async-request-runner' );
$this->async_request->maybe_dispatch();
}
}
public function run( $context = 'WP Cron' ) {
ActionScheduler_Compatibility::raise_memory_limit();
ActionScheduler_Compatibility::raise_time_limit( $this->get_time_limit() );
do_action( 'action_scheduler_before_process_queue' );
$this->run_cleanup();
$processed_actions = 0;
if ( false === $this->has_maximum_concurrent_batches() ) {
$batch_size = apply_filters( 'action_scheduler_queue_runner_batch_size', 25 );
do {
$processed_actions_in_batch = $this->do_batch( $batch_size, $context );
$processed_actions += $processed_actions_in_batch;
} while ( $processed_actions_in_batch > 0 && ! $this->batch_limits_exceeded( $processed_actions ) ); // keep going until we run out of actions, time, or memory
}
do_action( 'action_scheduler_after_process_queue' );
return $processed_actions;
}
protected function do_batch( $size = 100, $context = '' ) {
$claim = $this->store->stake_claim($size);
$this->monitor->attach($claim);
$processed_actions = 0;
foreach ( $claim->get_actions() as $action_id ) {
// bail if we lost the claim
if ( ! in_array( $action_id, $this->store->find_actions_by_claim_id( $claim->get_id() ) ) ) {
break;
}
$this->process_action( $action_id, $context );
$processed_actions++;
if ( $this->batch_limits_exceeded( $processed_actions ) ) {
break;
}
}
$this->store->release_claim($claim);
$this->monitor->detach();
$this->clear_caches();
return $processed_actions;
}
protected function clear_caches() {
if ( function_exists( 'wp_cache_flush_runtime' ) ) {
wp_cache_flush_runtime();
} elseif (
! wp_using_ext_object_cache()
|| apply_filters( 'action_scheduler_queue_runner_flush_cache', false )
) {
wp_cache_flush();
}
}
public function add_wp_cron_schedule( $schedules ) {
$schedules['every_minute'] = array(
'interval' => 60, // in seconds
'display' => __( 'Every minute', 'action-scheduler' ),
);
return $schedules;
}
}