Subscriber.php
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<?php
namespace WP_Rocket\Addon\Varnish;
use WP_Rocket\Admin\Options_Data;
use WP_Rocket\Event_Management\Subscriber_Interface;
/**
* Subscriber for the Varnish Purge.
*
* @since 3.5
*/
class Subscriber implements Subscriber_Interface {
/**
* Varnish instance
*
* @var Varnish
*/
private $varnish;
/**
* WP Rocket options instance
*
* @var Options_Data
*/
private $options;
/**
* Constructor
*
* @param Varnish $varnish Varnish instance.
* @param Options_Data $options WP Rocket options instance.
*/
public function __construct( Varnish $varnish, Options_Data $options ) {
$this->varnish = $varnish;
$this->options = $options;
}
/**
* {@inheritdoc}
*/
public static function get_subscribed_events() {
return [
'before_rocket_clean_domain' => [ 'clean_domain', 10, 3 ],
'before_rocket_clean_file' => [ 'clean_file' ],
'rocket_rucss_after_clearing_usedcss' => [ 'clean_file' ],
'before_rocket_clean_home' => [ 'clean_home', 10, 2 ],
'rocket_rucss_complete_job_status' => [ 'clean_file' ],
];
}
/**
* Checks if Varnish cache should be purged
*
* @since 3.5
*
* @return bool
*/
private function should_purge() {
return (
/**
* Filters the use of the Varnish compatibility add-on
*
* @param bool $varnish_purge True to use, false otherwise.
*/
apply_filters( 'do_rocket_varnish_http_purge', false ) // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals
||
(bool) $this->options->get( 'varnish_auto_purge', 0 )
);
}
/**
* Clears Varnish cache for the whole domain
*
* @param string $root The path of home cache file.
* @param string $lang The current lang to purge.
* @param string $url The home url.
* @return void
*/
public function clean_domain( $root, $lang, $url ) {
if ( ! $this->should_purge() ) {
return;
}
$this->varnish->purge( trailingslashit( $url ) . '?regex' );
}
/**
* Clears a specific page in Varnish cache
*
* @param string $url The url to purge.
* @return void
*/
public function clean_file( $url ) {
if ( ! $this->should_purge() ) {
return;
}
$this->varnish->purge( trailingslashit( $url ) . '?regex' );
}
/**
* Clears the homepage in Varnish cache
*
* @param string $root The path of home cache file.
* @param string $lang The current lang to purge.
* @return void
*/
public function clean_home( $root, $lang ) {
if ( ! $this->should_purge() ) {
return;
}
$home_url = trailingslashit( get_rocket_i18n_home_url( $lang ) );
$home_pagination_url = $home_url . trailingslashit( $GLOBALS['wp_rewrite']->pagination_base ) . '?regex';
$this->varnish->purge( $home_url );
$this->varnish->purge( $home_pagination_url );
}
}