217 lines
4.4 KiB
PHP
217 lines
4.4 KiB
PHP
<?php
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/**
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* File: Cache.php
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*
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* @package W3TC
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*/
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namespace W3TC;
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/**
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* W3 Cache class
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*/
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/**
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* Class: Cache
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*/
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class Cache {
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/**
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* Returns cache engine instance
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*
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* @param string $engine Engine key code.
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* @param array $config Configuration.
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* @return W3_Cache_Base
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*/
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public static function instance( $engine, $config = array() ) {
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static $instances = array();
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// Common configuration data.
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if ( ! isset( $config['blog_id'] ) ) {
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$config['blog_id'] = Util_Environment::blog_id();
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}
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$instance_key = sprintf( '%s_%s', $engine, md5( serialize( $config ) ) );
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if ( ! isset( $instances[ $instance_key ] ) ) {
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switch ( $engine ) {
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case 'apc':
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if ( function_exists( 'apcu_store' ) ) {
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$instances[ $instance_key ] = new Cache_Apcu( $config );
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} else if ( function_exists( 'apc_store' ) ) {
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$instances[ $instance_key ] = new Cache_Apc( $config );
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}
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break;
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case 'eaccelerator':
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$instances[ $instance_key ] = new Cache_Eaccelerator( $config );
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break;
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case 'file':
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$instances[ $instance_key ] = new Cache_File( $config );
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break;
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case 'file_generic':
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$instances[ $instance_key ] = new Cache_File_Generic( $config );
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break;
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case 'memcached':
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if ( class_exists( '\Memcached' ) ) {
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$instances[ $instance_key ] = new Cache_Memcached( $config );
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} elseif ( class_exists( '\Memcache' ) ) {
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$instances[ $instance_key ] = new Cache_Memcache( $config );
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}
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break;
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case 'nginx_memcached':
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$instances[ $instance_key ] = new Cache_Nginx_Memcached( $config );
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break;
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case 'redis':
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$instances[ $instance_key ] = new Cache_Redis( $config );
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break;
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case 'wincache':
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$instances[ $instance_key ] = new Cache_Wincache( $config );
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break;
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case 'xcache':
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$instances[ $instance_key ] = new Cache_Xcache( $config );
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break;
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default:
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trigger_error( 'Incorrect cache engine ' . esc_html( $engine ), E_USER_WARNING );
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$instances[ $instance_key ] = new Cache_Base( $config );
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break;
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}
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if ( ! isset( $instances[ $instance_key ] ) || ! $instances[ $instance_key ]->available() ) {
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$instances[ $instance_key ] = new Cache_Base( $config );
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}
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}
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return $instances[ $instance_key ];
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}
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/**
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* Returns caching engine name
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*
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* @param string $engine Engine key code.
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* @param string $module Module.
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*
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* @return string
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*/
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public static function engine_name( $engine, $module = '' ) {
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switch ( $engine ) {
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case 'memcached':
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if ( class_exists( 'Memcached' ) ) {
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$engine_name = 'Memcached';
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} else {
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$engine_name = 'Memcache';
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}
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break;
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case 'nginx_memcached':
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$engine_name = 'Nginx + Memcached';
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break;
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case 'apc':
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$engine_name = 'APC';
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break;
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case 'eaccelerator':
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$engine_name = 'EAccelerator';
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break;
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case 'redis':
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$engine_name = 'Redis';
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break;
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case 'xcache':
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$engine_name = 'XCache';
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break;
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case 'wincache':
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$engine_name = 'WinCache';
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break;
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case 'file':
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if ( 'pgcache' === $module ) {
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$engine_name = 'Disk: Basic';
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} else {
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$engine_name = 'Disk';
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}
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break;
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case 'file_generic':
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$engine_name = 'Disk: Enhanced';
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break;
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case 'ftp':
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$engine_name = 'Self-hosted / file transfer protocol upload';
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break;
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case 's3':
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$engine_name = 'Amazon Simple Storage Service (S3)';
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break;
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case 's3_compatible':
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$engine_name = 'S3 compatible';
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break;
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case 'cf':
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$engine_name = 'Amazon Cloudfront';
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break;
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case 'google_drive':
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$engine_name = 'Google Drive';
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break;
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case 'highwinds':
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$engine_name = 'Highwinds';
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break;
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case 'cf2':
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$engine_name = 'Amazon Cloudfront';
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break;
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case 'rscf':
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$engine_name = 'Rackspace Cloud Files';
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break;
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case 'azure':
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$engine_name = 'Microsoft Azure Storage';
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break;
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case 'edgecast':
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$engine_name = 'Media Template ProCDN / EdgeCast';
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break;
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case 'att':
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$engine_name = 'AT&T';
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break;
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case 'rackspace_cdn':
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$engine_name = 'Rackspace';
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break;
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case 'stackpath2':
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$engine_name = 'StackPath';
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break;
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case 'bunnycdn':
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$engine_name = 'Bunny CDN';
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break;
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case '':
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$engine_name = __( 'None', 'w3-total-cache' );
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break;
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default:
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$engine_name = $engine;
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break;
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}
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return $engine_name;
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}
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}
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