| 1 |
<?php |
| 2 |
/** |
| 3 |
* Cache Preloading functionalities |
| 4 |
* |
| 5 |
* @package PoweredCache |
| 6 |
*/ |
| 7 |
|
| 8 |
namespace PoweredCache; |
| 9 |
|
| 10 |
use PoweredCache\Async\CachePreloader; |
| 11 |
use function PoweredCache\Utils\permalink_structure_has_trailingslash; |
| 12 |
use function PoweredCache\Utils\site_cache_dir; |
| 13 |
use const PoweredCache\Constants\DEFERRED_PRELOAD_QUEUE_CRON_NAME; |
| 14 |
|
| 15 |
/** |
| 16 |
* Class Preloader |
| 17 |
*/ |
| 18 |
class Preloader { |
| 19 |
/** |
| 20 |
* Plugin settings |
| 21 |
* |
| 22 |
* @var $settings |
| 23 |
*/ |
| 24 |
private $settings; |
| 25 |
|
| 26 |
/** |
| 27 |
* Instance of CachePreloader |
| 28 |
* |
| 29 |
* @var CachePreloader |
| 30 |
*/ |
| 31 |
private $cache_preloader; |
| 32 |
|
| 33 |
/** |
| 34 |
* Tracks whether we’ve added any URLs this request |
| 35 |
* |
| 36 |
* @var $queue_dirty |
| 37 |
*/ |
| 38 |
private $queue_dirty = false; |
| 39 |
|
| 40 |
/** |
| 41 |
* Return an instance of the current class |
| 42 |
* |
| 43 |
* @return Preloader |
| 44 |
* @since 1.0 |
| 45 |
*/ |
| 46 |
public static function factory() { |
| 47 |
|
| 48 |
static $instance; |
| 49 |
|
| 50 |
if ( ! $instance ) { |
| 51 |
$instance = new self(); |
| 52 |
$instance->setup(); |
| 53 |
} |
| 54 |
|
| 55 |
return $instance; |
| 56 |
} |
| 57 |
|
| 58 |
/** |
| 59 |
* Setup routine |
| 60 |
*/ |
| 61 |
public function setup() { |
| 62 |
$this->settings = \PoweredCache\Utils\get_settings(); |
| 63 |
add_filter( 'wp_resource_hints', [ $this, 'dns_prefetch' ], 10, 2 ); |
| 64 |
add_filter( 'wp_resource_hints', [ $this, 'preconnect_resources' ], 10, 2 ); |
| 65 |
|
| 66 |
// bail if the preload not activated |
| 67 |
if ( ! $this->settings['enable_cache_preload'] ) { |
| 68 |
return; |
| 69 |
} |
| 70 |
|
| 71 |
$this->get_preloader(); |
| 72 |
|
| 73 |
/** |
| 74 |
* Page cache needs to be activated to get benefits of preloading |
| 75 |
*/ |
| 76 |
if ( ! $this->settings['enable_page_cache'] ) { |
| 77 |
return; |
| 78 |
} |
| 79 |
|
| 80 |
add_action( 'admin_bar_menu', [ $this, 'admin_bar_menu' ] ); |
| 81 |
add_action( 'admin_post_powered_cache_preload_cache', [ $this, 'start_preload' ] ); |
| 82 |
add_action( 'powered_cache_purge_all_cache', [ $this, 'setup_preload_queue' ] ); |
| 83 |
add_action( 'powered_cache_clean_site_cache_dir', [ $this, 'setup_preload_queue' ] ); |
| 84 |
add_action( 'powered_cache_advanced_cache_purge_post', [ $this, 'deferred_preload_queue' ], 10, 2 ); |
| 85 |
add_action( 'powered_cache_expired_files_deleted', [ $this, 'add_expired_urls_to_preload_queue' ], 10, 2 ); |
| 86 |
add_action( DEFERRED_PRELOAD_QUEUE_CRON_NAME, [ $this, 'add_purged_urls_to_preload_queue' ], 10, 2 ); |
| 87 |
add_action( 'shutdown', [ $this, 'dispatch_preload_queue' ], 0 ); |
| 88 |
} |
| 89 |
|
| 90 |
/** |
| 91 |
* Preload Admin bar menu |
| 92 |
* |
| 93 |
* @param object $wp_admin_bar Admin bar object |
| 94 |
* |
| 95 |
* @since 1.0 |
| 96 |
*/ |
| 97 |
public function admin_bar_menu( $wp_admin_bar ) { |
| 98 |
if ( POWERED_CACHE_IS_NETWORK && ! current_user_can( 'manage_network' ) ) { |
| 99 |
return; |
| 100 |
} |
| 101 |
|
| 102 |
if ( ! current_user_can( 'manage_options' ) ) { |
| 103 |
return; |
| 104 |
} |
| 105 |
|
| 106 |
$wp_admin_bar->add_menu( |
| 107 |
array( |
| 108 |
'id' => 'preload-cache', |
| 109 |
'title' => __( 'Preload Cache', 'powered-cache' ), |
| 110 |
'href' => wp_nonce_url( admin_url( 'admin-post.php?action=powered_cache_preload_cache' ), 'powered_cache_preload_cache' ), |
| 111 |
'parent' => 'powered-cache', |
| 112 |
) |
| 113 |
); |
| 114 |
} |
| 115 |
|
| 116 |
|
| 117 |
/** |
| 118 |
* Get the instance of CachePreloader |
| 119 |
* |
| 120 |
* @return CachePreloader |
| 121 |
*/ |
| 122 |
private function get_preloader() { |
| 123 |
if ( ! $this->cache_preloader ) { |
| 124 |
$this->cache_preloader = CachePreloader::factory(); |
| 125 |
} |
| 126 |
|
| 127 |
return $this->cache_preloader; |
| 128 |
} |
| 129 |
|
| 130 |
/** |
| 131 |
* Add preloading items to queue |
| 132 |
*/ |
| 133 |
public function start_preload() { |
| 134 |
if ( ! wp_verify_nonce( $_GET['_wpnonce'], 'powered_cache_preload_cache' ) ) { // phpcs:ignore |
| 135 |
wp_nonce_ays( '' ); |
| 136 |
} |
| 137 |
|
| 138 |
if ( POWERED_CACHE_IS_NETWORK && ! current_user_can( 'manage_network' ) ) { |
| 139 |
$redirect_url = add_query_arg( 'pc_action', 'start_preload_err_permission', wp_get_referer() ); |
| 140 |
wp_safe_redirect( esc_url_raw( $redirect_url ) ); |
| 141 |
exit; |
| 142 |
} |
| 143 |
|
| 144 |
if ( ! current_user_can( 'manage_options' ) ) { |
| 145 |
$redirect_url = add_query_arg( 'pc_action', 'start_preload_err_permission', wp_get_referer() ); |
| 146 |
wp_safe_redirect( esc_url_raw( $redirect_url ) ); |
| 147 |
exit; |
| 148 |
} |
| 149 |
|
| 150 |
\PoweredCache\Utils\log( sprintf( 'Preload triggered from admin bar.' ) ); |
| 151 |
|
| 152 |
$this->setup_preload_queue(); |
| 153 |
|
| 154 |
$redirect_url = add_query_arg( 'pc_action', 'start_preload', wp_get_referer() ); |
| 155 |
wp_safe_redirect( esc_url_raw( $redirect_url ) ); |
| 156 |
exit; |
| 157 |
} |
| 158 |
|
| 159 |
/** |
| 160 |
* Setup preload |
| 161 |
*/ |
| 162 |
public function setup_preload_queue() { |
| 163 |
// cancel existing process before populating |
| 164 |
$this->get_preloader()->cancel_process(); |
| 165 |
|
| 166 |
if ( POWERED_CACHE_IS_NETWORK ) { |
| 167 |
$sites = get_sites( [ 'fields' => 'ids' ] ); |
| 168 |
foreach ( $sites as $site_id ) { |
| 169 |
switch_to_blog( $site_id ); |
| 170 |
\PoweredCache\Utils\log( sprintf( 'Populating preload queue for site: %d', $site_id ) ); |
| 171 |
$this->populate_preload_queue(); |
| 172 |
restore_current_blog(); |
| 173 |
} |
| 174 |
} else { |
| 175 |
$this->populate_preload_queue(); |
| 176 |
} |
| 177 |
|
| 178 |
if ( $this->settings['enable_sitemap_preload'] && function_exists( '\PoweredCachePremium\Utils\preload_sitemap' ) ) { |
| 179 |
\PoweredCachePremium\Utils\preload_sitemap(); |
| 180 |
} |
| 181 |
} |
| 182 |
|
| 183 |
/** |
| 184 |
* Populate preload queue based on settings |
| 185 |
*/ |
| 186 |
protected function populate_preload_queue() { |
| 187 |
$preload_urls = []; |
| 188 |
|
| 189 |
if ( $this->settings['preload_homepage'] ) { |
| 190 |
$front_page = get_option( 'page_on_front' ); |
| 191 |
if ( ! empty( $front_page ) ) { |
| 192 |
$front_page_url = get_permalink( $front_page ); |
| 193 |
$preload_urls[] = $front_page_url; |
| 194 |
\PoweredCache\Utils\log( sprintf( 'Front page URL added to preload queue: %s', $front_page_url ) ); |
| 195 |
} |
| 196 |
|
| 197 |
$posts_page = get_option( 'page_for_posts' ); |
| 198 |
if ( ! empty( $posts_page ) ) { |
| 199 |
$posts_page_url = get_permalink( $posts_page ); |
| 200 |
$preload_urls[] = $posts_page_url; |
| 201 |
\PoweredCache\Utils\log( sprintf( 'Posts Page URL added to preload queue: %s', $posts_page_url ) ); |
| 202 |
} |
| 203 |
|
| 204 |
/** |
| 205 |
* trailingslashit important here, |
| 206 |
* likely redirection is not followed for non-blocking preload request |
| 207 |
*/ |
| 208 |
$home_url = trailingslashit( get_home_url() ); |
| 209 |
$preload_urls[] = $home_url; |
| 210 |
\PoweredCache\Utils\log( sprintf( 'Home URL added to preload queue: %s', $home_url ) ); |
| 211 |
} |
| 212 |
|
| 213 |
if ( $this->settings['preload_public_posts'] ) { |
| 214 |
$public_post_urls = $this->prepare_public_posts_urls(); |
| 215 |
$preload_urls = array_merge( $preload_urls, $public_post_urls ); |
| 216 |
\PoweredCache\Utils\log( sprintf( 'Public posts added to preload queue. ' ) ); |
| 217 |
} |
| 218 |
|
| 219 |
if ( $this->settings['preload_public_tax'] ) { |
| 220 |
$public_tax_term_urls = $this->prepare_public_tax_terms_urls(); |
| 221 |
$preload_urls = array_merge( $preload_urls, $public_tax_term_urls ); |
| 222 |
\PoweredCache\Utils\log( sprintf( 'Public tax terms added to preload queue. ' ) ); |
| 223 |
} |
| 224 |
|
| 225 |
/** |
| 226 |
* Filters preload urls before sending to queue |
| 227 |
* |
| 228 |
* @hook populate_preload_queue_urls |
| 229 |
* |
| 230 |
* @param {array} $preload_urls The list of preload urls |
| 231 |
* |
| 232 |
* @return {array} New value. |
| 233 |
* @since 2.4 |
| 234 |
*/ |
| 235 |
$preload_urls = apply_filters( 'populate_preload_queue_urls', $preload_urls ); |
| 236 |
|
| 237 |
foreach ( $preload_urls as $url ) { |
| 238 |
$this->add_url_to_preload_queue( $url ); |
| 239 |
} |
| 240 |
} |
| 241 |
|
| 242 |
/** |
| 243 |
* Add URLs to preload queue with a delay |
| 244 |
* |
| 245 |
* @param int $post_id Post ID |
| 246 |
* @param array $urls The URL list of the related pages that will be preloaded |
| 247 |
* |
| 248 |
* @since 3.6 |
| 249 |
*/ |
| 250 |
public function deferred_preload_queue( $post_id, $urls ) { |
| 251 |
\PoweredCache\Utils\log( sprintf( 'Post ID %d purged from cache, adding related URLs to preload queue with a delay.', $post_id ) ); |
| 252 |
wp_schedule_single_event( |
| 253 |
time() + 10, |
| 254 |
DEFERRED_PRELOAD_QUEUE_CRON_NAME, |
| 255 |
[ |
| 256 |
'post_id' => $post_id, |
| 257 |
'urls' => $urls, |
| 258 |
] |
| 259 |
); |
| 260 |
} |
| 261 |
|
| 262 |
|
| 263 |
/** |
| 264 |
* Add related pages to preload queue when the cache got cleared |
| 265 |
* |
| 266 |
* @param int $post_id Post ID |
| 267 |
* @param array $urls The URL list of the related pages that cleared during post update |
| 268 |
* |
| 269 |
* @since 2.0 |
| 270 |
*/ |
| 271 |
public function add_purged_urls_to_preload_queue( $post_id, $urls ) { |
| 272 |
$post_url = get_permalink( $post_id ); |
| 273 |
|
| 274 |
// include post itself all the time |
| 275 |
if ( ! empty( $post_url ) ) { |
| 276 |
$this->add_url_to_preload_queue( $post_url ); |
| 277 |
} |
| 278 |
|
| 279 |
if ( ! $urls ) { |
| 280 |
return; |
| 281 |
} |
| 282 |
|
| 283 |
foreach ( $urls as $url ) { |
| 284 |
$this->add_url_to_preload_queue( $url ); |
| 285 |
} |
| 286 |
|
| 287 |
} |
| 288 |
|
| 289 |
/** |
| 290 |
* Requeue deleted URLs |
| 291 |
* |
| 292 |
* @param array $expired_files Full path of cached item |
| 293 |
*/ |
| 294 |
public function add_expired_urls_to_preload_queue( $expired_files ) { |
| 295 |
|
| 296 |
/** |
| 297 |
* Filters expired urls preloading status |
| 298 |
* |
| 299 |
* @hook powered_cache_preload_expired_urls |
| 300 |
* |
| 301 |
* @param {boolean} $status True by default for preloading urls. |
| 302 |
* |
| 303 |
* @return {boolean} New value. |
| 304 |
* @since 2.0 |
| 305 |
*/ |
| 306 |
$preload_expired_urls = apply_filters( 'powered_cache_preload_expired_urls', true ); |
| 307 |
|
| 308 |
if ( true !== $preload_expired_urls ) { |
| 309 |
return; |
| 310 |
} |
| 311 |
|
| 312 |
/** |
| 313 |
* Get dir path without cache file name (eg index.html) |
| 314 |
*/ |
| 315 |
$expired_files = array_map( |
| 316 |
function ( $item ) { |
| 317 |
return dirname( $item ); |
| 318 |
}, |
| 319 |
$expired_files |
| 320 |
); |
| 321 |
|
| 322 |
$expired_files = array_unique( $expired_files ); // prevent double request due to meta.php + index.php file |
| 323 |
|
| 324 |
// replace path with site url |
| 325 |
$expired_urls = str_replace( site_cache_dir(), trailingslashit( get_site_url() ), $expired_files ); |
| 326 |
$has_trailingslash = permalink_structure_has_trailingslash(); |
| 327 |
|
| 328 |
foreach ( $expired_urls as $url ) { |
| 329 |
if ( $has_trailingslash ) { |
| 330 |
$url = trailingslashit( $url ); |
| 331 |
} |
| 332 |
$this->add_url_to_preload_queue( $url ); |
| 333 |
} |
| 334 |
|
| 335 |
} |
| 336 |
|
| 337 |
/** |
| 338 |
* Prep. public post urls for preload queue |
| 339 |
*/ |
| 340 |
public function prepare_public_posts_urls() { |
| 341 |
global $wpdb; |
| 342 |
|
| 343 |
$public_posts_url = []; |
| 344 |
/** |
| 345 |
* Filters posts offset for preload. |
| 346 |
* |
| 347 |
* @hook powered_cache_preload_public_posts_offset |
| 348 |
* |
| 349 |
* @param {int} $offset The offset of the post query. |
| 350 |
* |
| 351 |
* @return {int} New value. |
| 352 |
* @since 2.0 |
| 353 |
*/ |
| 354 |
$offset = (int) apply_filters( 'powered_cache_preload_public_posts_offset', 0 ); |
| 355 |
$max_preload_item = $this->preload_max_post_count(); |
| 356 |
|
| 357 |
\PoweredCache\Utils\log( sprintf( 'Adding public posts to queue' ) ); |
| 358 |
\PoweredCache\Utils\log( sprintf( 'OFFSET: %s', $offset ) ); |
| 359 |
\PoweredCache\Utils\log( sprintf( 'LIMIT: %s', $max_preload_item ) ); |
| 360 |
|
| 361 |
/** |
| 362 |
* Filters public post types. |
| 363 |
* |
| 364 |
* @hook powered_cache_preload_post_types |
| 365 |
* |
| 366 |
* @param {array} $types Public post types. |
| 367 |
* |
| 368 |
* @return {array} New value. |
| 369 |
* @since 1.0 |
| 370 |
*/ |
| 371 |
$types = apply_filters( |
| 372 |
'powered_cache_preload_post_types', |
| 373 |
get_post_types( |
| 374 |
array( |
| 375 |
'public' => true, |
| 376 |
'publicly_queryable' => true, |
| 377 |
), |
| 378 |
'names', |
| 379 |
'or' |
| 380 |
) |
| 381 |
); |
| 382 |
|
| 383 |
$types = array_map( 'esc_sql', $types ); |
| 384 |
$types = "'" . implode( "','", $types ) . "'"; |
| 385 |
$posts = $wpdb->get_col( "SELECT ID FROM {$wpdb->posts} WHERE ( post_type IN ( $types ) ) AND post_status = 'publish' ORDER BY ID ASC LIMIT {$offset},{$max_preload_item}" ); // phpcs:ignore |
| 386 |
|
| 387 |
\PoweredCache\Utils\log( sprintf( 'Found posts: %s', count( $posts ) ) ); |
| 388 |
|
| 389 |
foreach ( $posts as $post_id ) { |
| 390 |
$public_posts_url[] = get_permalink( $post_id ); |
| 391 |
} |
| 392 |
|
| 393 |
return $public_posts_url; |
| 394 |
} |
| 395 |
|
| 396 |
/** |
| 397 |
* Prep. public tax terms urls for preload queue |
| 398 |
*/ |
| 399 |
public function prepare_public_tax_terms_urls() { |
| 400 |
$public_tax_term_urls = []; |
| 401 |
$taxonomies = get_taxonomies( [ 'public' => true ] ); |
| 402 |
|
| 403 |
/** |
| 404 |
* Filters public taxonomies. |
| 405 |
* |
| 406 |
* @hook powered_cache_preload_taxonomies |
| 407 |
* |
| 408 |
* @param {array} $taxonomies Public taxonomies. |
| 409 |
* |
| 410 |
* @return {array} New value. |
| 411 |
* @since 1.0 |
| 412 |
*/ |
| 413 |
$taxonomies = apply_filters( 'powered_cache_preload_taxonomies', $taxonomies ); |
| 414 |
|
| 415 |
foreach ( $taxonomies as $tax ) { |
| 416 |
\PoweredCache\Utils\log( sprintf( 'Taxonomy added to queue: %s', $tax ) ); |
| 417 |
|
| 418 |
/** |
| 419 |
* Filters taxonomy offset for preload. |
| 420 |
* |
| 421 |
* @hook powered_cache_preload_public_taxonomies_offset |
| 422 |
* |
| 423 |
* @param {int} $offset Public taxonomies. |
| 424 |
* |
| 425 |
* @return {int} New value. |
| 426 |
* @since 2.0 |
| 427 |
*/ |
| 428 |
$offset = (int) apply_filters( 'powered_cache_preload_public_taxonomies_offset', 0 ); |
| 429 |
$limit = $this->preload_max_term_count(); |
| 430 |
|
| 431 |
/** |
| 432 |
* Filters term query args. |
| 433 |
* |
| 434 |
* @hook powered_cache_preload_tax_term_args |
| 435 |
* |
| 436 |
* @param {array} $args Arguments for terms. |
| 437 |
* |
| 438 |
* @return {array} New value. |
| 439 |
* @since 2.0 |
| 440 |
*/ |
| 441 |
$args = apply_filters( |
| 442 |
'powered_cache_preload_tax_term_args', |
| 443 |
[ |
| 444 |
'hide_empty' => false, |
| 445 |
'orderby' => 'count', |
| 446 |
'offset' => $offset, |
| 447 |
'number' => $limit, |
| 448 |
], |
| 449 |
$tax |
| 450 |
); |
| 451 |
|
| 452 |
\PoweredCache\Utils\log( 'Taxonomy preload args: [powered_cache_preload_tax_term_args]:' . print_r( $args, true ) ); // phpcs:ignore WordPress.PHP.DevelopmentFunctions.error_log_print_r |
| 453 |
|
| 454 |
$terms = get_terms( $tax, $args ); |
| 455 |
|
| 456 |
foreach ( $terms as $term ) { |
| 457 |
$public_tax_term_urls[] = get_term_link( $term ); |
| 458 |
} |
| 459 |
} |
| 460 |
|
| 461 |
return $public_tax_term_urls; |
| 462 |
} |
| 463 |
|
| 464 |
|
| 465 |
/** |
| 466 |
* Max number of posts that will preloaded |
| 467 |
* |
| 468 |
* @return mixed|void |
| 469 |
*/ |
| 470 |
public function preload_max_post_count() { |
| 471 |
/** |
| 472 |
* Filters preload post count |
| 473 |
* |
| 474 |
* @hook powered_cache_preload_post_limit |
| 475 |
* |
| 476 |
* @param {int} $limit The number of posts that will preloaded. |
| 477 |
* |
| 478 |
* @return {int} New value. |
| 479 |
* @since 2.0 |
| 480 |
*/ |
| 481 |
return apply_filters( 'powered_cache_preload_post_limit', 1000 ); |
| 482 |
} |
| 483 |
|
| 484 |
/** |
| 485 |
* Max number of public terms that will preloaded |
| 486 |
* |
| 487 |
* @return mixed|void |
| 488 |
*/ |
| 489 |
public function preload_max_term_count() { |
| 490 |
/** |
| 491 |
* Filters preload term count |
| 492 |
* |
| 493 |
* @hook powered_cache_preload_term_limit |
| 494 |
* |
| 495 |
* @param {int} $limit The number of terms that will preloaded. |
| 496 |
* |
| 497 |
* @return {int} New value. |
| 498 |
* @since 2.0 |
| 499 |
*/ |
| 500 |
return apply_filters( 'powered_cache_preload_term_limit', 100 ); |
| 501 |
} |
| 502 |
|
| 503 |
/** |
| 504 |
* Filters domains and URLs for resource hints of relation type |
| 505 |
* |
| 506 |
* @param array $urls URLs to print for resource hints. |
| 507 |
* @param string $relation_type The relation type the URLs are printed for, e.g. 'preconnect' or 'prerender'. |
| 508 |
* |
| 509 |
* @return array $urls resource hints |
| 510 |
* @since 2.2 "preconnect" hint split from dns prefetch |
| 511 |
*/ |
| 512 |
public function dns_prefetch( $urls, $relation_type ) { |
| 513 |
$domains = $this->get_prefetch_dns(); |
| 514 |
if ( $domains && is_array( $domains ) ) { |
| 515 |
foreach ( $domains as $domain ) { |
| 516 |
if ( 'dns-prefetch' === $relation_type ) { |
| 517 |
$domain = str_replace( [ 'http://', 'https://' ], '//', $domain ); |
| 518 |
$urls[] = $domain; |
| 519 |
} |
| 520 |
} |
| 521 |
} |
| 522 |
|
| 523 |
return $urls; |
| 524 |
} |
| 525 |
|
| 526 |
/** |
| 527 |
* Add "preconnect" hint for critical resources |
| 528 |
* |
| 529 |
* @param array $urls URLs |
| 530 |
* @param string $relation_type the type of hint |
| 531 |
* |
| 532 |
* @return array $urls Resource list |
| 533 |
* @since 2.2 |
| 534 |
*/ |
| 535 |
public function preconnect_resources( $urls, $relation_type ) { |
| 536 |
$domains = $this->get_preconnect_resources(); |
| 537 |
if ( $domains && is_array( $domains ) ) { |
| 538 |
foreach ( $domains as $domain ) { |
| 539 |
if ( 'preconnect' === $relation_type ) { |
| 540 |
$parsed = wp_parse_url( $domain ); |
| 541 |
if ( empty( $parsed['scheme'] ) ) { |
| 542 |
$domain = set_url_scheme( $domain ); |
| 543 |
} |
| 544 |
|
| 545 |
$urls[] = $domain; |
| 546 |
} |
| 547 |
} |
| 548 |
} |
| 549 |
|
| 550 |
return $urls; |
| 551 |
} |
| 552 |
|
| 553 |
|
| 554 |
/** |
| 555 |
* |
| 556 |
* Get the list of prefetch domains |
| 557 |
* |
| 558 |
* @return mixed|void |
| 559 |
*/ |
| 560 |
public function get_prefetch_dns() { |
| 561 |
$settings = \PoweredCache\Utils\get_settings(); |
| 562 |
|
| 563 |
$prefetch_dns = preg_split( '#(\r\n|\r|\n)#', $settings['prefetch_dns'], - 1, PREG_SPLIT_NO_EMPTY ); |
| 564 |
|
| 565 |
/** |
| 566 |
* Filters Prefetched DNS list. |
| 567 |
* |
| 568 |
* @hook powered_cache_prefetch_dns |
| 569 |
* |
| 570 |
* @param {array} $prefetch_dns The list of prefetch domains. |
| 571 |
* |
| 572 |
* @return {array} New value. |
| 573 |
* @since 2.0 |
| 574 |
*/ |
| 575 |
return apply_filters( 'powered_cache_prefetch_dns', $prefetch_dns ); |
| 576 |
} |
| 577 |
|
| 578 |
/** |
| 579 |
* Get the list of preconnect domains |
| 580 |
* |
| 581 |
* @return mixed|void |
| 582 |
* @since 2.2 |
| 583 |
*/ |
| 584 |
public function get_preconnect_resources() { |
| 585 |
$settings = \PoweredCache\Utils\get_settings(); |
| 586 |
|
| 587 |
$preconnect_resources = preg_split( '#(\r\n|\r|\n)#', $settings['preconnect_resource'], - 1, PREG_SPLIT_NO_EMPTY ); |
| 588 |
|
| 589 |
/** |
| 590 |
* Filters Preconnect resource list. |
| 591 |
* |
| 592 |
* @hook powered_cache_preconnect_resource |
| 593 |
* |
| 594 |
* @param {array} $preconnect_resources The list of prefetch domains. |
| 595 |
* |
| 596 |
* @return {array} New value. |
| 597 |
* @since 2.2 |
| 598 |
*/ |
| 599 |
return apply_filters( 'powered_cache_preconnect_resource', $preconnect_resources ); |
| 600 |
} |
| 601 |
|
| 602 |
|
| 603 |
/** |
| 604 |
* Make preload request |
| 605 |
* |
| 606 |
* @param string $url Target URL |
| 607 |
* @param array $args request args |
| 608 |
* |
| 609 |
* @return array|\WP_Error |
| 610 |
*/ |
| 611 |
public static function preload_request( $url, $args = [] ) { |
| 612 |
|
| 613 |
/** |
| 614 |
* Filters args of preload requests. |
| 615 |
* |
| 616 |
* @hook powered_cache_preload_url_request_args |
| 617 |
* |
| 618 |
* @param {array} $args Request defaults. |
| 619 |
* |
| 620 |
* @return {array} New value. |
| 621 |
* @since 2.0 |
| 622 |
*/ |
| 623 |
$request_args = apply_filters( |
| 624 |
'powered_cache_preload_url_request_args', |
| 625 |
[ |
| 626 |
'timeout' => 0.01, |
| 627 |
'blocking' => false, |
| 628 |
'user-agent' => 'Powered Cache Preloader', |
| 629 |
'sslverify' => false, |
| 630 |
] |
| 631 |
); |
| 632 |
|
| 633 |
$args = wp_parse_args( $args, $request_args ); |
| 634 |
|
| 635 |
/** |
| 636 |
* Fires before doing preload HTTP request. |
| 637 |
* |
| 638 |
* @hook powered_cache_preload_http_request |
| 639 |
* |
| 640 |
* @param {string} $url Preload URL. |
| 641 |
* @param {array} $args Request arguments. |
| 642 |
* |
| 643 |
* @since 2.0 |
| 644 |
*/ |
| 645 |
do_action( 'powered_cache_preload_http_request', $url, $args ); |
| 646 |
|
| 647 |
\PoweredCache\Utils\log( sprintf( 'Processing..: %s', $url ) ); // phpcs:ignore WordPress.PHP.DevelopmentFunctions.error_log_print_r |
| 648 |
|
| 649 |
return wp_remote_get( esc_url_raw( $url ), $args ); |
| 650 |
} |
| 651 |
|
| 652 |
/** |
| 653 |
* Wait internal between HTTP reqs |
| 654 |
* |
| 655 |
* @param int $delay delay time in microseconds |
| 656 |
*/ |
| 657 |
public static function wait( $delay = 500000 ) { |
| 658 |
/** |
| 659 |
* Filters wait time between preload requests. |
| 660 |
* |
| 661 |
* @hook powered_cache_preload_request_interval |
| 662 |
* |
| 663 |
* @param {int} $delay Delay time in microseconds. |
| 664 |
* |
| 665 |
* @return {int} New value. |
| 666 |
* @since 2.0 |
| 667 |
*/ |
| 668 |
$delay = absint( apply_filters( 'powered_cache_preload_request_interval', $delay ) ); |
| 669 |
|
| 670 |
// Convert the delay to seconds and microseconds |
| 671 |
$seconds = intdiv( $delay, 1000000 ); // Get full seconds |
| 672 |
$microseconds = $delay % 1000000; // Get remaining microseconds |
| 673 |
|
| 674 |
// Use sleep() for full second delays |
| 675 |
if ( $seconds > 0 ) { |
| 676 |
sleep( $seconds ); |
| 677 |
} |
| 678 |
|
| 679 |
// Use usleep() for remaining microseconds |
| 680 |
// sleeping more than 1 seconds may not be supported by the operating system with usleep |
| 681 |
if ( $microseconds > 0 ) { |
| 682 |
usleep( $microseconds ); |
| 683 |
} |
| 684 |
} |
| 685 |
|
| 686 |
|
| 687 |
/** |
| 688 |
* Get mobile user agent for preload requests |
| 689 |
* |
| 690 |
* @return mixed|void |
| 691 |
*/ |
| 692 |
public static function mobile_user_agent() { |
| 693 |
/** |
| 694 |
* Filters mobile agent name for mobile preload requests |
| 695 |
* |
| 696 |
* @hook powered_cache_preload_mobile_user_agent |
| 697 |
* |
| 698 |
* @param {string} $agent Mobile agent name. |
| 699 |
* |
| 700 |
* @return {string} New value. |
| 701 |
* @since 2.0 |
| 702 |
*/ |
| 703 |
return apply_filters( 'powered_cache_preload_mobile_user_agent', 'Powered Cache Preloader mobile iPhone' ); |
| 704 |
} |
| 705 |
|
| 706 |
/** |
| 707 |
* Add a URL to the preload queue with optional filtering. |
| 708 |
* |
| 709 |
* @param string $url The URL to add to the preload queue. |
| 710 |
* |
| 711 |
* @since 3.4 |
| 712 |
*/ |
| 713 |
protected function add_url_to_preload_queue( $url ) { |
| 714 |
/** |
| 715 |
* Filters whether a URL should be added to the preload queue. |
| 716 |
* |
| 717 |
* @hook powered_cache_preload_add_url_to_queue |
| 718 |
* |
| 719 |
* @param {boolean} $preload Whether to preload the URL. Default true. |
| 720 |
* @param {string} $url The URL to be preloaded. |
| 721 |
* |
| 722 |
* @return {boolean} Whether to preload the URL. |
| 723 |
* @since 3.4 |
| 724 |
*/ |
| 725 |
$do_preload = apply_filters( 'powered_cache_preload_add_url_to_queue', true, $url ); |
| 726 |
|
| 727 |
if ( $do_preload ) { |
| 728 |
$this->get_preloader()->push_to_queue( $url ); |
| 729 |
$this->queue_dirty = true; |
| 730 |
\PoweredCache\Utils\log( sprintf( 'URL added to preload queue : %s', $url ) ); |
| 731 |
} else { |
| 732 |
\PoweredCache\Utils\log( sprintf( 'URL skipped from preload queue: %s', $url ) ); |
| 733 |
} |
| 734 |
} |
| 735 |
|
| 736 |
/** |
| 737 |
* Dispatch the preload queue if it has been modified. |
| 738 |
* |
| 739 |
* @return void |
| 740 |
* @since 3.6 |
| 741 |
*/ |
| 742 |
public function dispatch_preload_queue() { |
| 743 |
if ( ! $this->queue_dirty ) { |
| 744 |
return; |
| 745 |
} |
| 746 |
|
| 747 |
// This will serialize the queue into the DB and fire off the async request |
| 748 |
$this->get_preloader()->save()->dispatch(); |
| 749 |
|
| 750 |
\PoweredCache\Utils\log( 'Dispatched preload queue.' ); |
| 751 |
} |
| 752 |
|
| 753 |
} |
| 754 |
|
