704 lines
21 KiB
PHP
704 lines
21 KiB
PHP
<?php
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if (!defined('ABSPATH')) die('No direct access allowed');
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if (!class_exists('WP_Optimize_Load_Url_Task')) require_once(dirname(__FILE__) . '/class-wpo-load-url-task.php');
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if (!class_exists('WP_Optimize_Preloader')) require_once(WPO_PLUGIN_MAIN_PATH . 'includes/class-wpo-preloader.php');
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class WP_Optimize_Page_Cache_Preloader extends WP_Optimize_Preloader {
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protected $preload_type = 'page_cache';
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protected $task_type = 'load-url-task';
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static protected $_instance = null;
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/**
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* WP_Optimize_Page_Cache_Preloader constructor.
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*/
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public function __construct() {
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parent::__construct();
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add_filter('cron_schedules', array($this, 'cron_add_intervals'));
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add_action('wpo_page_cache_schedule_preload', array($this, 'run_scheduled_cache_preload'));
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add_filter('wpo_preload_headers', array($this, 'preload_headers'));
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}
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/**
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* Check if cache is active.
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*
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* @return bool
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*/
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public function is_option_active() {
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return WP_Optimize()->get_page_cache()->is_enabled();
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}
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/**
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* Schedule or delete automatic preload action on cache settings update.
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*
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* @param array $new_settings The new settings
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* @param array $previous_settings Settings before saving
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*/
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public function cache_settings_updated($new_settings, $previous_settings) {
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if (!$new_settings['enable_page_caching']) {
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wp_clear_scheduled_hook('wpo_page_cache_schedule_preload');
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$this->delete_preload_continue_action();
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return;
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}
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if (!empty($new_settings['enable_schedule_preload'])) {
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$last_schedule_type = $previous_settings['preload_schedule_type'];
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if (wp_next_scheduled('wpo_page_cache_schedule_preload')) {
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// if already scheduled this schedule type
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if ($new_settings['preload_schedule_type'] == $last_schedule_type) {
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// If the schedule type is cache lifespan, check if the cache lifespan changed.
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if ('wpo_use_cache_lifespan' == $new_settings['preload_schedule_type']) {
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// Else, if the settings cache lifespan settings haven't changed, returns
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if ($new_settings['page_cache_length_value'] == $previous_settings['page_cache_length_value'] && $new_settings['page_cache_length_unit'] == $previous_settings['page_cache_length_unit']) {
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return;
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}
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} else {
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return;
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}
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}
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// clear currently scheduled preload action.
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wp_clear_scheduled_hook('wpo_page_cache_schedule_preload');
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}
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// schedule preload action.
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wp_schedule_event((time() + $this->get_schedule_interval($new_settings['preload_schedule_type'])), $new_settings['preload_schedule_type'], 'wpo_page_cache_schedule_preload');
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} else {
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wp_clear_scheduled_hook('wpo_page_cache_schedule_preload');
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}
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}
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/**
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* Clear active preload tasks, reschedule preload action.
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*/
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public function reschedule_preload() {
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// clear scheduled action.
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if (wp_next_scheduled('wpo_page_cache_schedule_preload')) {
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wp_clear_scheduled_hook('wpo_page_cache_schedule_preload');
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}
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// schedule preload action if need.
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if ($this->is_scheduled_preload_enabled()) {
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$preload_schedule_type = $this->get_cache_config('preload_schedule_type');
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wp_schedule_event(time() + $this->get_schedule_interval($preload_schedule_type), $preload_schedule_type, 'wpo_page_cache_schedule_preload');
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}
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}
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/**
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* Check if scheduled preload enabled.
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*
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* @return bool
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*/
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public function is_scheduled_preload_enabled() {
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$enable_schedule_preload = $this->get_cache_config('enable_schedule_preload');
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return !empty($enable_schedule_preload);
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}
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/**
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* Add intervals to cron schedules.
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*
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* @param array $schedules
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*
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* @return array
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*/
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public function cron_add_intervals($schedules) {
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$interval = $this->get_continue_preload_cron_interval();
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$schedules['wpo_page_cache_preload_continue_interval'] = array(
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'interval' => $interval,
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'display' => round($interval / 60, 1).' minutes'
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);
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$schedules['wpo_use_cache_lifespan'] = array(
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'interval' => WPO_Cache_Config::instance()->get_option('page_cache_length'),
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'display' => 'Same as cache lifespan: '.WPO_Cache_Config::instance()->get_option('page_cache_length_value').' '.WPO_Cache_Config::instance()->get_option('page_cache_length_unit')
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);
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return $schedules;
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}
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/**
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* Check if we need run cache preload and run it.
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*/
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public function run_scheduled_cache_preload() {
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$schedule_type = WPO_Cache_Config::instance()->get_option('preload_schedule_type');
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if (!$schedule_type) return;
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// Don't run preload if cache lifespan option enabled and cache not expired yet.
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if ('wpo_use_cache_lifespan' == $schedule_type) {
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/**
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* Filters the allowed time difference between the cache exiry and the current time, in seconds.
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* If the cache expires in less than $allowed_time_difference, preload. Otherwise leave it.
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*
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* @param integer $allowed_time_difference The time difference, in seconds (default = 600)
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*/
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$allowed_time_difference = apply_filters('wpo_preload_allowed_time_difference', 600);
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$page_cache_lifespan = WPO_Cache_Config::instance()->get_option('page_cache_length', 0);
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$last_preload_time = $this->options->get_option('wpo_last_page_cache_preload', 0);
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$time_since_last_preload = time() - $last_preload_time;
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$minimum_time_to_next_schedule_preload = $page_cache_lifespan - $allowed_time_difference;
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// Skip this if the last preload is not as old as the cache lifespan minus $allowed_time_difference
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if ($page_cache_lifespan > 0 && $time_since_last_preload < $minimum_time_to_next_schedule_preload) return;
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}
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$this->run();
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}
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/**
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* Get cache config option value.
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*
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* @return mixed
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*/
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public function get_cache_config($option) {
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static $config = null;
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if (null === $config) $config = WPO_Page_Cache::instance()->config->get();
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if (is_array($config) && array_key_exists($option, $config)) {
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return $config[$option];
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}
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return false;
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}
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/**
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* Create tasks (WP_Optimize_Load_Url_Task) for preload all urls from site.
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*
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* @param string $type The preload type (currently: scheduled, manual)
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* @return void
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*/
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public function create_tasks_for_preload_site_urls($type) {
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$urls = $this->get_site_urls();
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if (!empty($urls)) {
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$this->log(__('Creating tasks for preload site urls.', 'wp-optimize'));
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foreach ($urls as $url) {
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if (wpo_url_in_exceptions($url)) continue;
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if ($this->url_is_already_cached($url, $type)) {
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continue;
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}
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// this description is being used for internal purposes.
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$description = 'Preload - '.$url;
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$options = array('url' => $url, 'preload_type' => $type, 'anonymous_user_allowed' => (defined('DOING_CRON') && DOING_CRON) || (defined('WP_CLI') && WP_CLI));
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WP_Optimize_Load_Url_Task::create_task($this->task_type, $description, $options, 'WP_Optimize_Load_Url_Task');
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}
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$this->log(__('Tasks for preload site urls created.', 'wp-optimize'));
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}
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}
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/**
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* Preload mobile version from $url.
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*
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* @param string $url
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*
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* @return void
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*/
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public function preload_mobile($url) {
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static $is_mobile_caching_enabled;
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if (!isset($is_mobile_caching_enabled)) {
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$is_mobile_caching_enabled = $this->get_cache_config('enable_mobile_caching');
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}
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// Only run if option is active
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if (!$is_mobile_caching_enabled) return;
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$mobile_args = array(
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'httpversion' => '1.1',
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'user-agent' => 'Mozilla/5.0 (iPhone; CPU iPhone OS 9_1 like Mac OS X) AppleWebKit/601.1.46 (KHTML, like Gecko) Version/9.0 Mobile/13B143 Safari/601.1',
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'timeout' => 10,
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'headers' => apply_filters('wpo_preload_headers', array()),
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);
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$mobile_args = apply_filters('wpo_page_cache_preloader_mobile_args', $mobile_args, $url);
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$this->log('preload_mobile - ' . $url);
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wp_remote_get($url, $mobile_args);
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}
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/**
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* Preload amp version from $url.
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*
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* @param string $url
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*
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* @return void
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*/
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public function preload_amp($url) {
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if (!apply_filters('wpo_should_preload_amp', false, $url)) return;
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$amp_args = array(
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'httpversion' => '1.1',
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'user-agent' => 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.89 Safari/537.36',
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'timeout' => 10,
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'headers' => array(
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'X-WP-Optimize-Cache-Preload' => 'Yes',
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),
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);
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$url = untrailingslashit($url) . '/amp/';
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$amp_args = apply_filters('wpo_page_cache_preloader_amp_args', $amp_args, $url);
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$this->log('preload_amp - ' . $url);
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wp_remote_get($url, $amp_args);
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}
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/**
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* Check if sitemap exists then returns list of urls from sitemap file otherwise returns all posts urls.
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*
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* @return array
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*/
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public function get_site_urls() {
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$urls = $this->get_sitemap_urls();
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if (!empty($urls)) {
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$this->options->update_option('wpo_last_page_cache_preload_type', 'sitemap');
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} else {
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$urls = $this->get_post_urls();
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$this->options->update_option('wpo_last_page_cache_preload_type', 'posts');
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}
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$this->log(sprintf(_n('%d url found.', '%d urls found.', count($urls), 'wp-optimize'), count($urls)));
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/**
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* Filter the URLs which will be preloaded
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*
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* @param array $urls
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* @return array
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*/
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return apply_filters('wpo_preload_get_site_urls', $urls);
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}
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/**
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* Loads sitemap file and returns list of urls.
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*
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* @param string $sitemap_url
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*
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* @return array|bool
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*/
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public function get_sitemap_urls($sitemap_url = '') {
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$urls = array();
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// if sitemap url is empty then use main sitemap file name.
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$sitemap_url = ('' === $sitemap_url) ? site_url('/'.$this->get_sitemap_filename()) : $sitemap_url;
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// if simplexml_load_string not available then we don't load sitemap.
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if (!function_exists('simplexml_load_string')) {
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return $urls;
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}
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// load sitemap file.
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$response = wp_remote_get($sitemap_url, array('timeout' => 30));
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// if we get error then
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if (is_wp_error($response)) {
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$response = file_get_contents($sitemap_url);
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// if response is empty then try load from file.
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if (empty($response) && '' == $sitemap_url) {
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$sitemap_file = $this->get_local_sitemap_file();
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$response = file_get_contents($sitemap_file);
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}
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if (empty($response)) return $urls;
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$xml = @simplexml_load_string($response); // phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
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} else {
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// parse xml answer.
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$xml = @simplexml_load_string(wp_remote_retrieve_body($response)); // phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
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}
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// xml file has not valid xml content then return false.
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if (false === $xml) return false;
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// if exists urls then return them.
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if (isset($xml->url)) {
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foreach ($xml->url as $element) {
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if (!isset($element->loc)) continue;
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$urls[] = (string) $element->loc;
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}
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} elseif (isset($xml->sitemap)) {
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// if has links to other sitemap files then get urls from them.
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foreach ($xml->sitemap as $element) {
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if (!isset($element->loc)) continue;
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$sitemap_urls = $this->get_sitemap_urls($element->loc);
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if (is_array($sitemap_urls)) {
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$urls = array_merge($urls, $sitemap_urls);
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}
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}
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}
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return $urls;
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}
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/**
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* Get the path to a local sitemap file
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*
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* @return string
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*/
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private function get_local_sitemap_file() {
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if (!function_exists('get_home_path')) {
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include_once ABSPATH . '/wp-admin/includes/file.php';
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}
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return trailingslashit(get_home_path()) . $this->get_sitemap_filename();
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}
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/**
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* Get all posts of any post type and returns urls for them.
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*
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* @return array
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*/
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public function get_post_urls() {
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global $post;
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$offset = 0;
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$posts_per_page = 1000;
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$urls = array();
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$urls[] = site_url('/');
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do {
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$query = new WP_Query(array(
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'post_type' => 'any',
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'post_status' => 'publish',
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'posts_per_page' => $posts_per_page,
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'offset' => $offset,
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'orderby' => 'ID',
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'order' => 'ASC',
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'cache_results' => false, // disable cache to avoid memory error.
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));
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$posts_loaded = $query->post_count;
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while ($query->have_posts()) {
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$query->the_post();
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$permalink = get_permalink();
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$urls[] = $permalink;
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// check page separators in the post content
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preg_match_all('/\<\!--nextpage--\>/', $post->post_content, $matches);
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// if there any separators add urls for each page
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if (count($matches[0])) {
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$prefix = strpos($permalink, '?') ? '&page=' : '';
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for ($page = 0; $page < count($matches[0]); $page++) {
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if ('' != $prefix) {
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$urls[] = $permalink . $prefix . ($page+2);
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} else {
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$urls[] = trailingslashit($permalink) . ($page+2);
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}
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}
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}
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}
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$offset += $posts_loaded;
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} while ($posts_loaded > 0);
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/**
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* If domain mapping enabled then replace domains in urls.
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*/
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if ($this->is_domain_mapping_enabled()) {
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$blog_id = get_current_blog_id();
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$mapped_domain = $this->get_mapped_domain($blog_id);
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$blog_details = get_blog_details($blog_id);
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if ($mapped_domain) {
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foreach ($urls as $i => $url) {
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$urls[$i] = preg_replace('/'.$blog_details->domain.'/i', $mapped_domain, $url, 1);
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}
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}
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}
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wp_reset_postdata();
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return $urls;
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}
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/**
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* Check if domain mapping enabled.
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*
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* @return bool
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*/
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public function is_domain_mapping_enabled() {
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// SUNRISE constant is defined with installation WordPress MU Domain Mapping plugin.
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$enabled = is_multisite() && defined('SUNRISE') && 'on' == strtolower(SUNRISE);
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/**
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* Filters if Multisite Domain mapping is enabled.
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* Currently, we can only detect if the WordPress MU Domain Mapping plugin is in use.
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* Using the WP Core functionality should not require this, unless if the domain name is set somewhere else but in the site url option.
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*/
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return apply_filters('wpo_is_domain_mapping_enabled', $enabled);
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}
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/**
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* Return mapped domain by $blog_id.
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*
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* @param int $blog_id
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*
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* @return string
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*/
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public function get_mapped_domain($blog_id) {
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global $wpdb;
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$domain = '';
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$multisite_plugin_table_name = $wpdb->base_prefix.'domain_mapping';
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// Check if table exists
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if ($wpdb->get_var("SHOW TABLES LIKE '$multisite_plugin_table_name'") != $multisite_plugin_table_name) {
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// This table created in WordPress MU Domain Mapping plugin.
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$row = $wpdb->get_row("SELECT `domain` FROM {$multisite_plugin_table_name} WHERE `blog_id` = {$blog_id} AND `active` = 1", ARRAY_A);
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if (!empty($row)) {
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$domain = $row['domain'];
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}
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} else {
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// When using the WP Core method, the site url option contains the mapped domain.
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$domain = get_site_url($blog_id);
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}
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/**
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* Filters the mapped domain name
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*
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* @param string $domain The domain name
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* @param integer $blog_id The blog ID
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*/
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return apply_filters('wpo_get_mapped_domain', $domain, $blog_id);
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}
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/**
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* Captures and logs any interesting messages
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*
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* @param String $message - the error message
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* @param String $error_type - the error type
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*/
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public function log($message, $error_type = 'info') {
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if (isset($this->loggers)) {
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foreach ($this->loggers as $logger) {
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$logger->log($message, $error_type);
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}
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}
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}
|
|
|
|
/**
|
|
* Instance of WP_Optimize_Page_Cache_Preloader.
|
|
*
|
|
* @return WP_Optimize_Page_Cache_Preloader
|
|
*/
|
|
public static function instance() {
|
|
if (empty(self::$_instance)) {
|
|
self::$_instance = new WP_Optimize_Page_Cache_Preloader();
|
|
}
|
|
|
|
return self::$_instance;
|
|
}
|
|
|
|
/**
|
|
* Check if the URL is already cached, or needs to be preloaded
|
|
*
|
|
* @param string $url The preloaded url
|
|
* @param string $preload_type The preload type (manual | scheduled)
|
|
* @return boolean
|
|
*/
|
|
private function url_is_already_cached($url, $preload_type) {
|
|
static $files = array();
|
|
$regenerate_count = 0;
|
|
$folder = trailingslashit(WPO_CACHE_FILES_DIR) . wpo_get_url_path($url);
|
|
// If the folder does not exist, consider the URL as cleared
|
|
if (!is_dir($folder)) return false;
|
|
|
|
if (empty($files)) {
|
|
// Check only the base files
|
|
$files[] = 'index.html';
|
|
|
|
if (WPO_Cache_Config::instance()->get_option('enable_mobile_caching')) {
|
|
$files[] = 'mobile.index.html';
|
|
}
|
|
$files = apply_filters('wpo_maybe_clear_files_list', $files);
|
|
}
|
|
|
|
foreach ($files as $file) {
|
|
$file_path = trailingslashit($folder).$file;
|
|
if (!file_exists($file_path)) {
|
|
// The file does not exist, count it as "deleted"
|
|
$regenerate_count++;
|
|
continue;
|
|
}
|
|
|
|
if ($this->should_regenerate_file($file_path, $preload_type)) {
|
|
// delefe the expired cache file
|
|
unlink($file_path);
|
|
$regenerate_count++;
|
|
}
|
|
}
|
|
|
|
// if 0 == $regenerate_count, nothing all the expected files exist, and none were deleted.
|
|
return 0 == $regenerate_count;
|
|
}
|
|
|
|
/**
|
|
* Determine if a file should be regenerated
|
|
*
|
|
* @param string $path The file to check
|
|
* @param string $preload_type The preload type (manual | scheduled)
|
|
*
|
|
* @return boolean
|
|
*/
|
|
private function should_regenerate_file($path, $preload_type) {
|
|
// Store the variables, as they'll be used for each file and each file
|
|
static $is_preloader_scheduled = null;
|
|
static $lifespan = null;
|
|
static $schedule_type = null;
|
|
static $schedule_interval = null;
|
|
static $lifespan_expiry_threshold = null;
|
|
static $always_regenerate_file_if_preload_is_manual = null;
|
|
static $always_regenerate_file_if_preload_is_scheduled = null;
|
|
static $regenerate_file_when_no_expiry_date = null;
|
|
|
|
// Sets the variables once per request:
|
|
if (null === $is_preloader_scheduled) {
|
|
$is_preloader_scheduled = WPO_Cache_Config::instance()->get_option('enable_schedule_preload');
|
|
$schedule_type = WPO_Cache_Config::instance()->get_option('preload_schedule_type');
|
|
$lifespan = WPO_Cache_Config::instance()->get_option('page_cache_length');
|
|
$schedule_interval = $this->get_schedule_interval($schedule_type);
|
|
|
|
/**
|
|
* Expiry threshold: the current file will be considered stale if within the threshold. Default: 600s (10min)
|
|
*/
|
|
$lifespan_expiry_threshold = apply_filters('wpo_lifespan_expiry_threshold', 600);
|
|
|
|
/**
|
|
* Filters if a cache should systematically be regenerated when running a manual preload. Default: false
|
|
*/
|
|
$always_regenerate_file_if_preload_is_manual = apply_filters('wpo_always_regenerate_file_if_preload_is_manual', false);
|
|
|
|
/**
|
|
* Filters if a cache should systematically be regenerated when running a scheduled preload. Default: false
|
|
*/
|
|
$always_regenerate_file_if_preload_is_scheduled = apply_filters('wpo_always_regenerate_file_if_preload_is_scheduled', false);
|
|
|
|
/**
|
|
* Filters if a cache should systematically be regenerated when running a preload and no schedule is set, and cache does not expire. Default: true
|
|
*/
|
|
$regenerate_file_when_no_expiry_date = apply_filters('wpo_regenerate_file_when_no_expiry_date', true);
|
|
}
|
|
|
|
if (($always_regenerate_file_if_preload_is_manual && 'manual' == $preload_type) || ($always_regenerate_file_if_preload_is_scheduled && 'scheduled' == $preload_type)) {
|
|
$result = true;
|
|
} else {
|
|
|
|
$modified_time = (int) filemtime($path);
|
|
|
|
// cache lifespan is set.
|
|
if (0 != $lifespan) {
|
|
$expiry_time = $modified_time + $lifespan - $lifespan_expiry_threshold;
|
|
$result = time() > $expiry_time;
|
|
} elseif ($is_preloader_scheduled) {
|
|
$expiry_time = $modified_time + $schedule_interval - $lifespan_expiry_threshold;
|
|
$result = time() > $expiry_time;
|
|
} else {
|
|
$result = $regenerate_file_when_no_expiry_date;
|
|
}
|
|
|
|
}
|
|
|
|
return apply_filters('wpo_preloader_should_regenerate_file', $result, $path, $preload_type);
|
|
}
|
|
|
|
/**
|
|
* Add preloader headers
|
|
*/
|
|
public function preload_headers($headers) {
|
|
$headers['X-WP-Optimize-Cache-Preload'] = 'Yes';
|
|
return $headers;
|
|
}
|
|
|
|
/**
|
|
* Option disabled error message
|
|
*
|
|
* @return array
|
|
*/
|
|
protected function get_option_disabled_error() {
|
|
return array(
|
|
'success' => false,
|
|
'error' => __('Page cache is disabled.', 'wp-optimize')
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Get preload already running error message
|
|
*
|
|
* @return array
|
|
*/
|
|
protected function get_preload_already_running_error() {
|
|
return array(
|
|
'success' => false,
|
|
'error' => __('Probably page cache preload is running already.', 'wp-optimize')
|
|
);
|
|
}
|
|
|
|
protected function get_preload_data() {
|
|
return WP_Optimize()->get_page_cache()->get_cache_size();
|
|
}
|
|
|
|
protected function get_preloading_message($cache_size) {
|
|
return array(
|
|
'done' => false,
|
|
'message' => __('Loading URLs...', 'wp-optimize'),
|
|
'size' => WP_Optimize()->format_size($cache_size['size']),
|
|
'file_count' => $cache_size['file_count']
|
|
);
|
|
}
|
|
|
|
protected function get_last_preload_message($cache_size, $last_preload_time_str) {
|
|
return array(
|
|
'done' => true,
|
|
'message' => sprintf(__('Last preload finished at %s', 'wp-optimize'), $last_preload_time_str),
|
|
'size' => WP_Optimize()->format_size($cache_size['size']),
|
|
'file_count' => $cache_size['file_count']
|
|
);
|
|
}
|
|
|
|
protected function get_preload_success_message($cache_size) {
|
|
return array(
|
|
'done' => true,
|
|
'size' => WP_Optimize()->format_size($cache_size['size']),
|
|
'file_count' => $cache_size['file_count']
|
|
);
|
|
}
|
|
|
|
protected function get_preload_progress_message($cache_size, $preloaded_message, $preload_resuming_in) {
|
|
return array(
|
|
'done' => false,
|
|
'message' => $preloaded_message,
|
|
'size' => WP_Optimize()->format_size($cache_size['size']),
|
|
'file_count' => $cache_size['file_count'],
|
|
'resume_in' => $preload_resuming_in
|
|
);
|
|
}
|
|
}
|
|
|
|
WP_Optimize_Page_Cache_Preloader::instance();
|