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<?php
namespace WP_Rocket\Engine\HealthCheck;
use FilesystemIterator;
use RecursiveDirectoryIterator;
use RecursiveIteratorIterator;
use UnexpectedValueException;
use WP_Rocket\Event_Management\Subscriber_Interface;
/**
* Add a weekly event to check for the cache directories sizes
* and send a notification if it's bigger thant the defined maximum size
*
* @since 3.3.5
*/
class CacheDirSizeCheck implements Subscriber_Interface {
/**
* Event name
*/
const CRON_NAME = 'rocket_cache_dir_size_check';
/**
* Maximum allowed size
*/
const MAX_SIZE = 10737418240;
/**
* ROUTE endpoint to request
*/
const ROUTE = 'api/wp-rocket/cache-dir-check.php';
/**
* Absolute path to the minify directory
*
* @var string
*/
private $minify_path;
/**
* Full URL to the API endpoint
*
* @var string
*/
private $api_endpoint;
/**
* Instantiate the class
*
* @param string $minify_path Absolute path to the minify directory.
* @param string $rocket_url WP Rocket website URL.
*/
public function __construct( $minify_path, $rocket_url ) {
$this->minify_path = $minify_path . get_current_blog_id();
$this->api_endpoint = $rocket_url . self::ROUTE;
}
/**
* Return an array of events that this subscriber wants to listen to.
*
* @since 3.3.5
*
* @return array
*/
public static function get_subscribed_events() {
return [
'cron_schedules' => 'add_schedule',
'init' => 'schedule_cache_dir_size_check',
self::CRON_NAME => 'cache_dir_size_check',
'wp_rocket_upgrade' => [ 'delete_option_after_upgrade', 11, 2 ],
];
}
/**
* Adds the weekly interval if it doesn't already exist
*
* @since 3.3.5
*
* @param array $schedules Array of intervals.
* @return array
*/
public function add_schedule( $schedules ) {
if ( isset( $schedules['weekly'] ) ) {
return $schedules;
}
$schedules['weekly'] = [
'interval' => 604800,
'display' => __( 'weekly', 'rocket' ),
];
return $schedules;
}
/**
* Schedules the cron event if not yet scheduled.
*
* @since 3.3.5
*
* @return void
*/
public function schedule_cache_dir_size_check() {
if ( ! wp_next_scheduled( self::CRON_NAME ) ) {
wp_schedule_event( time(), 'weekly', self::CRON_NAME );
}
}
/**
* Checks the cache dir size when the event is triggered
* and send a notification if the directory size is above the defined maximum size
*
* @since 3.3.5
*
* @return void
*/
public function cache_dir_size_check() {
if ( 1 === (int) get_option( self::CRON_NAME ) ) {
return;
}
$checks = [
'min' => $this->minify_path,
];
foreach ( $checks as $type => $path ) {
$size = $this->get_dir_size( $path );
if ( $size > self::MAX_SIZE ) {
$this->send_notification( $type );
}
}
update_option( self::CRON_NAME, 1 );
}
/**
* Deletes the check size option when updating the plugin
*
* @since 3.3.6
*
* @param string $new_version Latest WP Rocket version.
* @param string $current_version Installed WP Rocket version.
*/
public function delete_option_after_upgrade( $new_version, $current_version ) {
if ( version_compare( $current_version, $new_version, '<' ) ) {
delete_option( self::CRON_NAME );
}
}
/**
* Gets the size of the provided directory
*
* @since 3.3.5
*
* @param string $dir Absolute path to the directory.
* @return int
*/
private function get_dir_size( $dir ) {
$size = 0;
try {
foreach ( new RecursiveIteratorIterator( new RecursiveDirectoryIterator( $dir, FilesystemIterator::SKIP_DOTS ) ) as $file ) {
$size += $file->getSize();
}
return $size;
} catch ( UnexpectedValueException $e ) {
return $size;
}
}
/**
* Sends a notification to our endpoint with the type of directory
*
* @since 3.3.5
*
* @param string $dir_type Type of directory.
* @return void
*/
private function send_notification( $dir_type ) {
wp_safe_remote_post(
$this->api_endpoint,
[
'body' => 'cache_dir_type=' . $dir_type,
]
);
}
}
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