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<?php |
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/** |
| 3 |
* Cache Preloader module. |
| 4 |
* |
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* Owns the preloader's settings + the dashboard custom panel that pairs |
| 6 |
* the schema controls with a Start/Stop/Status surface. |
| 7 |
* |
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* Tier: Free (LiteSpeed parity — their crawler is free). |
| 9 |
* Roadmap: §3 P3.1. |
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* |
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* @package XSpeed |
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*/ |
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|
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declare(strict_types=1); |
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|
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namespace XSpeed\Modules\Preloader; |
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|
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defined( 'ABSPATH' ) || exit; |
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|
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use XSpeed\Module; |
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use XSpeed\Preloader; |
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use XSpeed\Settings_Manager; |
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|
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final class PreloaderModule extends Module { |
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|
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public const SLUG = 'preloader'; |
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public const TIER = self::TIER_FREE; |
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public const VERSION = '1.0.0'; |
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|
| 30 |
public function ui_metadata(): array { |
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return array( |
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'label' => __( 'Preloader', 'xspeed' ), |
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'tab_label' => __( 'Crawl Now', 'xspeed' ), // its own tab on the Preloader page |
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'icon' => 'Wand2', |
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'description' => __( 'Crawl the sitemap to warm cache so visitors never hit a cold MISS.', 'xspeed' ), |
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// Custom panel wraps the schema-driven settings with a |
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// Start/Stop control surface + a live status readout |
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// (queue depth, last URL, recent errors). |
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'custom_panel' => 'PreloaderHost', |
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); |
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} |
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|
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/** |
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* Surface a firewall refusing our warmer. |
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* |
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* A 403/406 on a warm used to reach the admin only as "HTTP 403" buried |
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* in the activity log, so a site whose every warm was refused looked |
| 48 |
* simply idle — newly published posts were never warmed and nothing said |
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* why. The page is fine; the fix is a server rule, so the notice names |
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* the user-agent to allow. (#481) |
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*/ |
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public function ui_notices(): array { |
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$block = Preloader::firewall_block(); |
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if ( null === $block ) { |
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return array(); |
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} |
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|
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return array( |
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array( |
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'tone' => 'warn', |
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'title' => __( 'Your server is blocking the xSpeed cache warmer', 'xspeed' ), |
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'body' => sprintf( |
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/* translators: 1: HTTP status code, 2: the user-agent xSpeed sends. */ |
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__( 'A warm request was refused with HTTP %1$d, which is how a firewall answers when it judges a request by its user-agent. Pages are not being warmed, so the first visitor to each new page waits for an uncached render. Allow the user-agent "%2$s" in your server\'s bad-bot rules — on xCloud this is the 8G firewall — or change it with the xspeed_preloader_user_agent filter. This notice clears itself once a warm gets through.', 'xspeed' ), |
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(int) $block['code'], |
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(string) ( $block['user_agent'] ?? Preloader::user_agent() ) |
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), |
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), |
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); |
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} |
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|
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public function settings_schema(): array { |
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return array( |
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'enabled' => array( |
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'type' => 'bool', |
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'default' => false, |
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'label' => __( 'Enable Preloader', 'xspeed' ), |
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'description' => __( 'When on, xSpeed crawls the sitemap on the schedule below and warms the page cache.', 'xspeed' ), |
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), |
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'schedule' => array( |
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'type' => 'enum', |
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'default' => 'manual', |
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'options' => array( 'manual', 'hourly', 'daily', 'weekly' ), |
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'option_labels' => array( |
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'manual' => 'Manual', |
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'hourly' => 'Hourly', |
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'daily' => 'Daily', |
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'weekly' => 'Weekly', |
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), |
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'label' => __( 'Schedule', 'xspeed' ), |
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'description' => __( 'How often to start a fresh crawl. Manual means you trigger it from the dashboard.', 'xspeed' ), |
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'dependsOn' => array( 'field' => 'enabled' ), |
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), |
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'batch_size' => array( |
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'type' => 'int', |
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'default' => 5, |
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'min' => 1, |
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'max' => 50, |
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'label' => __( 'Batch Size', 'xspeed' ), |
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'description' => __( 'URLs warmed per cron tick. Higher = faster crawl, more load on the origin.', 'xspeed' ), |
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'dependsOn' => array( 'field' => 'enabled' ), |
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), |
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'sitemap_url' => array( |
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'type' => 'string', |
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'default' => '', |
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'label' => __( 'Sitemap URL (optional)', 'xspeed' ), |
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'description' => __( 'Override the auto-detected WordPress core sitemap (/wp-sitemap.xml). Leave blank for default.', 'xspeed' ), |
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'dependsOn' => array( 'field' => 'enabled' ), |
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), |
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'warm_on_publish' => array( |
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'type' => 'bool', |
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'default' => true, |
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'label' => __( 'Warm new content immediately', 'xspeed' ), |
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'description' => __( 'When a post or page is published, fetch it once so the first visitor sees a cache HIT, not a cold MISS.', 'xspeed' ), |
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'dependsOn' => array( 'field' => 'enabled' ), |
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), |
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'warm_on_comment' => array( |
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'type' => 'bool', |
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'default' => false, |
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'label' => __( 'Re-warm after comments', 'xspeed' ), |
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'description' => __( 'Re-warm a page after a comment is posted (Cache purges the page on comment; this fetches it back into cache).', 'xspeed' ), |
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'dependsOn' => array( 'field' => 'enabled' ), |
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), |
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); |
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} |
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|
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public function rest_routes(): array { |
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// Module base gives us GET + POST for settings under |
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// /xspeed/v1/preloader/. We add Start/Stop/Status alongside. |
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$default = parent::rest_routes(); |
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return array_merge( |
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$default, |
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array( |
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array( |
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'path' => '/start', |
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'methods' => 'POST', |
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'callback' => array( $this, 'rest_start' ), |
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), |
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array( |
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'path' => '/stop', |
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'methods' => 'POST', |
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'callback' => array( $this, 'rest_stop' ), |
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), |
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array( |
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'path' => '/status', |
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'methods' => 'GET', |
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'callback' => array( $this, 'rest_status' ), |
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), |
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) |
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); |
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} |
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|
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public function cli_commands(): array { |
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return array( |
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array( |
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'name' => 'xspeed preloader', |
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'callback' => array( $this, 'cli_handler' ), |
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'shortdesc' => 'Drive the cache preloader (start | stop | status).', |
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'ai_hint' => 'Cache warming: crawl the site so visitors hit a warm cache instead of paying for the first render. Use after a full purge, or when the first visitor to each page reports a slow load.', |
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'synopsis' => array( |
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array( |
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'type' => 'positional', |
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'name' => 'action', |
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'options' => array( 'start', 'stop', 'status' ), |
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'optional' => false, |
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), |
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), |
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), |
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); |
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} |
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|
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public function boot(): void { |
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/* |
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* Deferred to `init`. This module reads its own settings to decide |
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* what to hook, and reading settings builds settings_schema(), whose |
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* labels are declared through __(). boot() runs on `plugins_loaded`, |
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* before `after_setup_theme` — the point WordPress 6.7+ treats as the |
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* earliest safe moment to translate — so doing that here fires |
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* _load_textdomain_just_in_time on every request AND resolves the |
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* labels against a domain that is not loaded yet. |
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* |
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* Everything below hooks actions that fire after `init`, so running |
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* one hook later is equivalent. |
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*/ |
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add_action( 'init', array( $this, 'boot_on_init' ) ); |
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} |
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|
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/** |
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* The real boot body — see boot() for why it runs on `init`. |
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*/ |
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public function boot_on_init(): void { |
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add_action( Preloader::CRON_HOOK, array( Preloader::class, 'tick' ) ); |
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add_action( 'xspeed_preloader_recurring', array( Preloader::class, 'recurring_kickoff' ) ); |
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|
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// Apply schedule changes immediately whenever this module's |
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// settings get written (the standard per-module option hook). |
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add_action( 'update_option_xspeed_module_preloader', array( $this, 'on_settings_change' ), 10, 2 ); |
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add_action( 'add_option_xspeed_module_preloader', array( $this, 'on_settings_added' ), 10, 2 ); |
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|
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// Content warmer — auto-warm a single URL on post publish / |
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// comment so the first visitor after a publish/comment sees a |
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// HIT, not the cold MISS that Cache::purge_all just created. |
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$opts = Settings_Manager::get( self::SLUG ); |
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if ( ! empty( $opts['warm_on_publish'] ) ) { |
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add_action( 'transition_post_status', array( $this, 'on_post_transition' ), 10, 3 ); |
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} |
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if ( ! empty( $opts['warm_on_comment'] ) ) { |
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add_action( 'comment_post', array( $this, 'on_comment_post' ), 20, 2 ); |
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} |
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} |
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|
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/** |
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* Hook: a post transitioned to publish. Warm its permalink once on |
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* shutdown so the post-save request itself stays fast. |
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* |
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* @param string $new New post status. |
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* @param string $old Old post status. |
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* @param \WP_Post $post Post object. |
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*/ |
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public function on_post_transition( $new, $old, $post ): void { |
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if ( 'publish' !== $new || 'publish' === $old ) { |
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return; |
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} |
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// Only warm public post types so we don't crawl private CPTs. |
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$post_type_obj = get_post_type_object( $post->post_type ); |
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if ( ! $post_type_obj || empty( $post_type_obj->public ) ) { |
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return; |
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} |
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$url = get_permalink( $post ); |
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if ( ! $url ) { |
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return; |
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} |
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// Defer to shutdown so the user's "Publish" click returns fast. |
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// (Cache::purge_all has already fired by then on the save_post |
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// hook, so the warm fetch lands AFTER the purge.) |
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add_action( |
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'shutdown', |
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static function () use ( $url ) { |
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Preloader::warm_one( $url, 'post published' ); |
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}, |
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20 |
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); |
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} |
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|
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/** |
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* Hook: comment posted. Warm the post's permalink so the page is |
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* back in cache before the next visitor lands. |
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* |
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* @param int $comment_id The comment ID. |
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* @param int $approved 1, 0, or 'spam'. |
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*/ |
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public function on_comment_post( $comment_id, $approved ): void { |
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// Approved comments only — pending/spam don't show on the |
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// public page and shouldn't trigger a warm. |
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if ( 1 !== (int) $approved ) { |
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return; |
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} |
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$comment = get_comment( $comment_id ); |
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if ( ! $comment || ! $comment->comment_post_ID ) { |
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return; |
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} |
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$url = get_permalink( (int) $comment->comment_post_ID ); |
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if ( ! $url ) { |
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return; |
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} |
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add_action( |
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'shutdown', |
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static function () use ( $url ) { |
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Preloader::warm_one( $url, 'comment posted' ); |
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}, |
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20 |
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); |
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} |
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|
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public function deactivate(): void { |
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wp_clear_scheduled_hook( Preloader::CRON_HOOK ); |
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wp_clear_scheduled_hook( 'xspeed_preloader_recurring' ); |
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} |
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|
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public function on_settings_change( $old, $new ): void { |
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$enabled = is_array( $new ) && ! empty( $new['enabled'] ); |
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$schedule = is_array( $new ) ? (string) ( $new['schedule'] ?? 'manual' ) : 'manual'; |
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Preloader::apply_schedule( $enabled ? $schedule : 'manual' ); |
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} |
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|
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public function on_settings_added( $name, $value ): void { |
| 287 |
$enabled = is_array( $value ) && ! empty( $value['enabled'] ); |
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$schedule = is_array( $value ) ? (string) ( $value['schedule'] ?? 'manual' ) : 'manual'; |
| 289 |
Preloader::apply_schedule( $enabled ? $schedule : 'manual' ); |
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} |
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|
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public function rest_start( \WP_REST_Request $request ) { |
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$opts = Settings_Manager::get( self::SLUG ); |
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if ( empty( $opts['enabled'] ) ) { |
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return new \WP_Error( |
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'xspeed_preloader_disabled', |
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__( 'Enable the preloader before starting a crawl.', 'xspeed' ), |
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array( 'status' => 409 ) |
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); |
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} |
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return rest_ensure_response( Preloader::start() ); |
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} |
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|
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public function rest_stop( \WP_REST_Request $request ) { |
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return rest_ensure_response( Preloader::stop() ); |
| 306 |
} |
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|
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public function rest_status( \WP_REST_Request $request ) { |
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return rest_ensure_response( Preloader::status() ); |
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} |
| 311 |
|
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public function cli_handler( array $args, array $assoc ): void { |
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$action = $args[0] ?? 'status'; |
| 314 |
|
| 315 |
switch ( $action ) { |
| 316 |
case 'start': |
| 317 |
$opts = Settings_Manager::get( self::SLUG ); |
| 318 |
if ( empty( $opts['enabled'] ) ) { |
| 319 |
\WP_CLI::error( 'Preloader is disabled. Enable it via wp xspeed preloader set --enabled=1 first.' ); |
| 320 |
return; |
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} |
| 322 |
$state = Preloader::start(); |
| 323 |
// Don't print a green Success over a crawl that queued |
| 324 |
// nothing — that exit-0 was the whole complaint in #142. |
| 325 |
$sitemap_error = (string) ( $state['sitemap_error'] ?? '' ); |
| 326 |
if ( 0 === (int) $state['total'] ) { |
| 327 |
\WP_CLI::error( |
| 328 |
'' !== $sitemap_error |
| 329 |
? sprintf( 'Queued 0 URLs. %s', $sitemap_error ) |
| 330 |
: 'Queued 0 URLs — nothing to warm. Check the sitemap URL and the cache exclusion rules.' |
| 331 |
); |
| 332 |
return; |
| 333 |
} |
| 334 |
if ( 'fallback' === ( $state['source'] ?? '' ) ) { |
| 335 |
\WP_CLI::warning( $sitemap_error ); |
| 336 |
\WP_CLI::success( |
| 337 |
sprintf( |
| 338 |
'Queued %d URL%s from the site content instead of the sitemap.', |
| 339 |
$state['total'], |
| 340 |
1 === $state['total'] ? '' : 's' |
| 341 |
) |
| 342 |
); |
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return; |
| 344 |
} |
| 345 |
\WP_CLI::success( sprintf( 'Queued %d URL%s.', $state['total'], 1 === $state['total'] ? '' : 's' ) ); |
| 346 |
return; |
| 347 |
|
| 348 |
case 'stop': |
| 349 |
Preloader::stop(); |
| 350 |
\WP_CLI::success( 'Preloader stopped.' ); |
| 351 |
return; |
| 352 |
|
| 353 |
case 'status': |
| 354 |
$state = Preloader::status(); |
| 355 |
\WP_CLI::log( 'Running : ' . ( $state['running'] ? 'yes' : 'no' ) ); |
| 356 |
\WP_CLI::log( 'Processed : ' . $state['processed'] . ' / ' . $state['total'] ); |
| 357 |
if ( $state['last_url'] ) { |
| 358 |
\WP_CLI::log( 'Last URL : ' . $state['last_url'] ); |
| 359 |
} |
| 360 |
if ( ! empty( $state['errors'] ) ) { |
| 361 |
\WP_CLI::log( 'Errors : ' . count( $state['errors'] ) ); |
| 362 |
foreach ( array_slice( $state['errors'], -5 ) as $e ) { |
| 363 |
// Tolerate a bare string as well as the {url, error} |
| 364 |
// shape. A string entry fataled this command outright |
| 365 |
// ("Cannot access offset of type string on string"), |
| 366 |
// which also took MCP's get_preloader_status down with |
| 367 |
// it — an agent asking why a preload failed got a type |
| 368 |
// error instead of the reason. The writer is fixed, but |
| 369 |
// `status` is a diagnostic: it should survive whatever |
| 370 |
// it is handed rather than die reporting on it. (QA F1) |
| 371 |
if ( is_array( $e ) ) { |
| 372 |
$url = isset( $e['url'] ) ? (string) $e['url'] : ''; |
| 373 |
$msg = isset( $e['error'] ) ? (string) $e['error'] : ''; |
| 374 |
// The sitemap message already names the URL, so |
| 375 |
// prefixing it would print the URL twice on one line. |
| 376 |
$line = ( '' !== $url && false === strpos( $msg, $url ) ) |
| 377 |
? $url . ' — ' . $msg |
| 378 |
: $msg; |
| 379 |
} else { |
| 380 |
$line = (string) $e; |
| 381 |
} |
| 382 |
\WP_CLI::log( ' ' . $line ); |
| 383 |
} |
| 384 |
} |
| 385 |
return; |
| 386 |
|
| 387 |
default: |
| 388 |
\WP_CLI::error( "Unknown action: $action" ); |
| 389 |
} |
| 390 |
} |
| 391 |
} |
| 392 |
|
