202 lines
3.9 KiB
PHP
202 lines
3.9 KiB
PHP
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<?php
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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
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* @param array $config
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* @return W3_Cache_Base
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*/
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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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$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( $config );
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break;
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case 'eaccelerator':
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$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] ) ||
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!$instances[$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 unknown $engine
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* @param unknown $module
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*
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* @return string
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*/
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static public 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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$engine_name = 'memcache';
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break;
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case 'nginx_memcached':
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$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 ( $module == 'pgcache' )
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$engine_name = 'disk: basic';
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else
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$engine_name = 'disk';
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break;
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case 'file_generic':
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$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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$engine_name = 'stackpath';
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break;
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default:
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$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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