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<?php
namespace WP_Rocket\Engine\HealthCheck;
use WP_Rocket\Admin\Options_Data;
use WP_Rocket\Event_Management\Subscriber_Interface;
class HealthCheck implements Subscriber_Interface {
/**
* Instance of options.
*
* @var Options_Data
*/
private $options;
/**
* Array of events with their descriptions.
*
* @var array
*/
private $events;
/**
* Creates an instance of the health checker.
*
* @param Options_Data $options Options_Data instance.
*/
public function __construct( Options_Data $options ) {
$this->options = $options;
$this->events = $this->get_events();
}
/**
* Returns an array of events that this subscriber wants to listen to.
*
* @return array
*/
public static function get_subscribed_events() {
return [
'admin_notices' => 'missed_cron',
];
}
/**
* Display a warning notice if WP Rocket scheduled events are not running properly.
*
* @since 3.5.4
*/
public function missed_cron() {
if ( ! $this->should_check() ) {
return;
}
$delay = rocket_get_constant( 'DISABLE_WP_CRON' ) ? HOUR_IN_SECONDS : 5 * MINUTE_IN_SECONDS;
$list = '';
$events = $this->events;
foreach ( $this->events as $event => $description ) {
$timestamp = wp_next_scheduled( $event );
if (
false === $timestamp
||
( $timestamp + $delay - time() ) > 0
) {
unset( $events[ $event ] );
continue;
}
$list .= "<li>{$description}</li>";
}
if ( empty( $events ) ) {
return;
}
$message = sprintf(
'<p>%1$s</p>
<ul>%2$s</ul>
<p>%3$s</p>',
_n(
'The following scheduled event failed to run. This may indicate the CRON system is not running properly, which can prevent some WP Rocket features from working as intended:',
'The following scheduled events failed to run. This may indicate the CRON system is not running properly, which can prevent some WP Rocket features from working as intended:',
count( $events ),
'rocket'
),
$list,
__( 'Please contact your host to check if CRON is working.', 'rocket' )
);
rocket_notice_html(
[
'status' => 'warning',
'dismissible' => '',
'message' => $message,
'dismiss_button' => 'rocket_warning_cron',
]
);
}
/**
* Checks if health check should run.
*
* @since 3.5.4
*
* @return bool true when should do health check; else, false.
*/
protected function should_check() {
if ( ! current_user_can( 'rocket_manage_options' ) ) {
return false;
}
if ( 'settings_page_wprocket' !== get_current_screen()->id ) {
return false;
}
$dismissed = (array) get_user_meta( get_current_user_id(), 'rocket_boxes', true );
if ( in_array( 'rocket_warning_cron', $dismissed, true ) ) {
return false;
}
return ! (
0 === (int) $this->options->get( 'purge_cron_interval', 0 )
&&
0 === (int) $this->options->get( 'async_css', 0 )
&&
0 === (int) $this->options->get( 'manual_preload', 0 )
&&
0 === (int) $this->options->get( 'schedule_automatic_cleanup', 0 )
);
}
/**
* Gets an array of events with their descriptions.
*
* @since 3.5.4
*
* @return array array of events => descriptions.
*/
protected function get_events() {
return [
'rocket_purge_time_event' => __( 'Scheduled Cache Purge', 'rocket' ),
'rocket_database_optimization_time_event' => __( 'Scheduled Database Optimization', 'rocket' ),
'rocket_database_optimization_cron_interval' => __( 'Database Optimization Process', 'rocket' ),
'rocket_preload_cron_interval' => _x( 'Preload', 'noun', 'rocket' ),
'rocket_critical_css_generation_cron_interval' => __( 'Critical Path CSS Generation Process', 'rocket' ),
];
}
}