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<?php
/**
* File: Extension_AlwaysCached_Worker.php
*
* AlwaysCached worker model.
*
* @since 2.8.0
*
* @package W3TC
*/
namespace W3TC;
/**
* AlwaysCached worker model.
*
* @since 2.8.0
*/
class Extension_AlwaysCached_Worker {
/**
* Run method for AlwaysCached worker.
*
* @since 2.8.0
*
* @param bool $html Print HTML.
*
* @return void
*/
public static function run( $html = true ) {
$timeslot_seconds = 60;
$timeslot_seconds = apply_filters(
'w3tc_alwayscached_worker_timeslot',
$timeslot_seconds
);
$time_exit = time() + $timeslot_seconds;
if ( $html ) {
echo '<div style="white-space: pre-line;">';
}
esc_html_e( 'Processing queue.', 'w3-total-cache' );
// Infinite loop to process queue items until the time slot is exhausted or the queue is empty.
while ( true ) {
if ( time() >= $time_exit ) {
esc_html_e( "\nQueue worker time slot exhaused.", 'w3-total-cache' );
break;
}
$item = Extension_AlwaysCached_Queue::pop_item_begin();
if ( empty( $item ) ) {
esc_html_e( "\nQueue is empty.", 'w3-total-cache' );
break;
}
echo esc_html( sprintf( "\n%s ", $item['key'] ) );
$result = self::process_item( $item );
if ( 'ok' === $result ) {
esc_html_e( 'ok', 'w3-total-cache' );
Extension_AlwaysCached_Queue::pop_item_finish( $item );
update_option( 'w3tc_alwayscached_worker_timestamp', gmdate( 'Y-m-d G:i:s' ) );
} elseif ( 'postpone' === $result ) {
esc_html_e( 'postponed', 'w3-total-cache' );
} else {
esc_html_e( 'failed', 'w3-total-cache' );
}
}
if ( $html ) {
echo "\n</div>\n";
} else {
echo "\n";
}
}
/**
* Process item.
*
* @since 2.8.0
*
* @param array $item Item.
* @param bool $ajax Ajax flag.
*
* @return string
*/
public static function process_item( $item, $ajax = false ) {
return self::process_item_url( $item, $ajax );
}
/**
* Process item by URL.
*
* @since 2.8.0
*
* @param array $item Item.
* @param bool $ajax Ajax flag.
*
* @return string
*/
private static function process_item_url( $item, $ajax = false ) {
if ( ! $ajax ) {
echo esc_html(
sprintf(
// translators: 1 item URL.
__( 'regenerate %s... ', 'w3-total-cache' ),
$item['url']
)
);
}
$result = wp_remote_request(
$item['url'],
array(
'headers' => array(
'w3tcalwayscached' => $item['key'],
),
)
);
if (
is_wp_error( $result )
|| empty( $result['response']['code'] )
|| 500 === $result['response']['code']
) {
// phpcs:ignore WordPress.PHP.DevelopmentFunctions.error_log_error_log
error_log( 'failed to handle queue url' . $item['url'] );
return 'failed';
}
if ( empty( $result['headers'] ) || empty( $result['headers']['w3tcalwayscached'] ) ) {
if ( ! $ajax ) {
esc_html_e( "\n no evidence of cache refresh, will reprocess on next schedule/run\n ", 'w3-total-cache' );
}
return 'failed';
}
return 'ok';
}
}