62 lines
1.8 KiB
PHP
62 lines
1.8 KiB
PHP
<?php
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namespace Automattic\Jetpack_Boost\Lib\Minify;
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use Automattic\Jetpack\Boost_Core\Lib\Cacheable;
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/**
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* Store the hash of the path string so that the concatenated file can be constructed
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* on-demand.
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*
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* We are setting the transient for a long time because, if the content of the hash is not accessible, the concatenated file
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* will not be able to construct itself. Because of page caching, there may be situations where this function will not
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* get called for a long time, and we still want to serve the concatenated file in those cases. Having the value in
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* a Boost Transient ensures that the value is cleaned up when Boost is uninstalled.
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*/
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final class File_Paths extends Cacheable {
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private $paths;
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private $mtime;
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private $cache_buster;
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protected const DEFAULT_EXPIRY = YEAR_IN_SECONDS;
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public function set( $paths, $mtime, $cache_buster ) {
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$this->paths = $paths;
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$this->mtime = $mtime;
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$this->cache_buster = $cache_buster;
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}
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public function jsonSerialize(): array {
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return array(
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'paths' => $this->paths,
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'mtime' => $this->mtime,
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'cache_buster' => $this->cache_buster,
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);
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}
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/**
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* Get an array of file paths that belong to the same hash.
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*
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* @return array Array of file paths relative to the webroot.
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*/
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public function get_paths() {
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return $this->paths;
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}
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public static function jsonUnserialize( $data ) {
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$instance = new self();
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$instance->set( $data['paths'], $data['mtime'], $data['cache_buster'] );
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return $instance;
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}
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protected function generate_cache_id() {
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$hash = md5( implode( ',', $this->paths ) . '_' . $this->mtime . '_' . $this->cache_buster );
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// Keep cache id small as option keys have a character limit.
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return substr( $hash, 0, 10 );
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}
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protected static function cache_prefix() {
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return 'concat_paths_';
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}
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}
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