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217 lines
4.2 KiB
PHP
217 lines
4.2 KiB
PHP
<?php
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/**
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* Feature base class.
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*
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* @package Divi
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* @subpackage Builder
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* @since 4.10.0
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*/
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/**
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* Base Feature feature.
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*
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* @since 4.10.0
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*/
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class ET_Builder_Global_Feature_Base {
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const CACHE_META_KEY = '_et_builder_global_feature_cache';
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/**
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* Primed status.
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*
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* @access protected
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* @var bool
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*/
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protected $_primed = false;
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/**
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* Cache array.
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*
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* @access protected
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* @var array
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*/
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protected $_cache = [];
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/**
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* Cache status.
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*
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* @access protected
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* @var array
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*/
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protected $_cache_dirty = false;
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/**
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* Construct instance.
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*/
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public function __construct() {
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if ( self::enabled() ) {
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$this->cache_prime();
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if ( ! has_action( 'shutdown', [ $this, 'cache_save' ] ) ) {
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add_action( 'shutdown', [ $this, 'cache_save' ] );
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}
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}
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}
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/**
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* Purge the features cache.
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*
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* @since 4.10.0
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*/
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public static function purge_cache() {
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delete_option( static::CACHE_META_KEY );
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}
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/**
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* Get the features cache.
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*
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* @since 4.10.0
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*
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* @return mixed
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*/
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public static function load_cache() {
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return get_option( static::CACHE_META_KEY );
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}
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/**
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* Tell whether we should use cache or not.
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*
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* @since 4.10.0
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*
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* @return bool
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*/
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public static function enabled() {
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/**
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* Whether Global Feature Cache should be enabled or not.
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*
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* @since ?
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*
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* @param bool $enabled.
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*/
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return apply_filters( 'et_builder_global_feature_cache_enabled', et_builder_is_frontend() );
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}
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/**
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* Prime the cache.
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*
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* @since 4.10.0
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*/
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public function cache_prime() {
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if ( empty( $this->_primed ) ) {
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$meta = self::load_cache();
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if ( isset( $meta[1] ) ) {
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list( $stored_index, $cache ) = $meta;
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$current_index = (string) self::_get_cache_index();
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$this->_cache = ( $current_index === $stored_index ) ? $cache : [];
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}
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$this->_primed = true;
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}
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}
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/**
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* Save the cache.
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*
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* @since 4.10.0
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*/
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public function cache_save() {
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// Only if cache is "dirty" and builder is used.
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if ( $this->_cache_dirty ) {
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$cache = array( self::_get_cache_index(), $this->_cache );
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update_option( static::CACHE_META_KEY, $cache );
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}
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}
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/**
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* Get Cache Version Index Items.
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*
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* @since 4.10.0
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* @access protected
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* @return array Cache version items.
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*/
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protected static function _get_cache_index_items() {
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global $wp_version;
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/**
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* Filters global feature cache index items.
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*
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* @since 4.10.0
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*
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* @param array Assoc array of cache index items.
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* @param string The cache meta key that the cache index items belong to.
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*/
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return apply_filters(
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'et_global_feature_cache_index_items',
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array(
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'gph' => ET_Builder_Global_Presets_History::instance()->get_global_history_index(),
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'divi' => et_get_theme_version(),
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'wp' => $wp_version,
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),
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static::CACHE_META_KEY
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);
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}
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/**
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* Get Cache Version Index.
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*
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* @since 4.10.0
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* @access protected
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* @return string .Cache version index.
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*/
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public static function _get_cache_index() {
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return wp_json_encode( self::_get_cache_index_items() );
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}
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/**
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* Get cache
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*
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* @since 4.10.0
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* @param string $key Cache key.
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* @param string $group Cache Group.
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*/
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public function cache_get( $key, $group = 'default' ) {
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$exists = isset( $this->_cache[ $group ] ) && isset( $this->_cache[ $group ][ $key ] );
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return $exists ? $this->_cache[ $group ][ $key ] : null;
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}
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/**
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* Set cache
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*
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* @since 4.10.0
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* @param string $key Cache key.
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* @param mixed $value To be cached.
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* @param string $group Cache group.
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*/
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public function cache_set( $key, $value, $group = 'default' ) {
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$this->_cache[ $group ][ $key ] = $value;
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$this->_cache_dirty = true;
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}
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/**
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* Check for cached value.
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*
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* First check cache if present, if not, determine
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* from calling the callback.
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*
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* @param string $key Name of item.
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* @param function $cb Callback function to perform logic.
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* @param string $group Cache group.
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*
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* @return bool/mixed Result.
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*/
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public function get( $key, $cb, $group = 'default' ) {
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// short circuit.
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$result = $this->cache_get( $key, $group );
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if ( is_null( $result ) ) {
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// Set cache for next time.
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$result = $cb();
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$this->cache_set( $key, $result, $group );
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}
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return $result;
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}
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}
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