installed plugin W3 Total Cache version 2.3.2
This commit is contained in:
Gitium
306
wp-content/plugins/w3-total-cache/Cache_Nginx_Memcached.php
Normal file
306
wp-content/plugins/w3-total-cache/Cache_Nginx_Memcached.php
Normal file
@ -0,0 +1,306 @@
|
||||
<?php
|
||||
namespace W3TC;
|
||||
|
||||
/**
|
||||
* PECL Memcached class
|
||||
*/
|
||||
class Cache_Nginx_Memcached extends Cache_Base {
|
||||
/**
|
||||
* Memcache object
|
||||
*/
|
||||
private $_memcache = null;
|
||||
|
||||
/*
|
||||
* Configuration used to reinitialize persistent object
|
||||
*/
|
||||
private $_config = null;
|
||||
|
||||
/**
|
||||
* constructor
|
||||
*/
|
||||
function __construct( $config ) {
|
||||
parent::__construct( $config );
|
||||
|
||||
if ( isset( $config['persistent'] ) && $config['persistent'] ) {
|
||||
$this->_config = $config;
|
||||
$this->_memcache = new \Memcached( $this->_get_key_version_key( '' ) );
|
||||
$server_list = $this->_memcache->getServerList();
|
||||
|
||||
if ( empty( $server_list ) )
|
||||
return $this->initialize( $config );
|
||||
else
|
||||
return true;
|
||||
} else {
|
||||
$this->_memcache = new \Memcached();
|
||||
return $this->initialize( $config );
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Initializes
|
||||
*/
|
||||
private function initialize( $config ) {
|
||||
if ( empty( $config['servers'] ) )
|
||||
return false;
|
||||
|
||||
if ( defined( '\Memcached::OPT_REMOVE_FAILED_SERVERS' ) ) {
|
||||
$this->_memcache->setOption( \Memcached::OPT_REMOVE_FAILED_SERVERS, true );
|
||||
}
|
||||
|
||||
$this->_memcache->setOption( \Memcached::OPT_COMPRESSION, false );
|
||||
|
||||
if ( isset( $config['aws_autodiscovery'] ) &&
|
||||
$config['aws_autodiscovery'] &&
|
||||
defined( '\Memcached::OPT_CLIENT_MODE' ) &&
|
||||
defined( '\Memcached::DYNAMIC_CLIENT_MODE' ) )
|
||||
$this->_memcache->setOption( \Memcached::OPT_CLIENT_MODE,
|
||||
\Memcached::DYNAMIC_CLIENT_MODE );
|
||||
|
||||
foreach ( (array)$config['servers'] as $server ) {
|
||||
list( $ip, $port ) = Util_Content::endpoint_to_host_port( $server );
|
||||
$this->_memcache->addServer( $ip, $port );
|
||||
}
|
||||
|
||||
if ( isset( $config['username'] ) && !empty( $config['username'] ) &&
|
||||
method_exists( $this->_memcache, 'setSaslAuthData' ) ) {
|
||||
$this->_memcache->setSaslAuthData( $config['username'],
|
||||
$config['password'] );
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
/**
|
||||
* Adds data
|
||||
*
|
||||
* @param string $key
|
||||
* @param mixed $var
|
||||
* @param integer $expire
|
||||
* @param string $group Used to differentiate between groups of cache values
|
||||
* @return boolean
|
||||
*/
|
||||
function add( $key, &$var, $expire = 0, $group = '' ) {
|
||||
return $this->set( $key, $var, $expire, $group );
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets data
|
||||
*
|
||||
* @param string $key
|
||||
* @param mixed $var
|
||||
* @param integer $expire
|
||||
* @param string $group Used to differentiate between groups of cache values
|
||||
* @return boolean
|
||||
*/
|
||||
function set( $key, $var, $expire = 0, $group = '' ) {
|
||||
$this->_memcache->setOption( \Memcached::OPT_USER_FLAGS,
|
||||
( isset( $var['c'] ) ? 1 : 0 ) );
|
||||
|
||||
return @$this->_memcache->set( $key, $var['content'], $expire );
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns data
|
||||
*
|
||||
* @param string $key
|
||||
* @param string $group Used to differentiate between groups of cache values
|
||||
* @return mixed
|
||||
*/
|
||||
function get_with_old( $key, $group = '' ) {
|
||||
$has_old_data = false;
|
||||
|
||||
$v = @$this->_memcache->get( $key );
|
||||
if ( $v === FALSE ) {
|
||||
return null;
|
||||
}
|
||||
|
||||
$data = array( 'content' => $v );
|
||||
$data['compression'] = ( substr( $key, -5 ) == '_gzip' ? 'gzip' : '' );
|
||||
return array( $data, false );
|
||||
}
|
||||
|
||||
/**
|
||||
* Replaces data
|
||||
*
|
||||
* @param string $key
|
||||
* @param mixed $var
|
||||
* @param integer $expire
|
||||
* @param string $group Used to differentiate between groups of cache values
|
||||
* @return boolean
|
||||
*/
|
||||
function replace( $key, &$var, $expire = 0, $group = '' ) {
|
||||
return $this->set( $key, $var, $expire, $group );
|
||||
}
|
||||
|
||||
/**
|
||||
* Deletes data
|
||||
*
|
||||
* @param string $key
|
||||
* @param string $group
|
||||
* @return boolean
|
||||
*/
|
||||
function delete( $key, $group = '' ) {
|
||||
return @$this->_memcache->delete( $key );
|
||||
}
|
||||
|
||||
/**
|
||||
* Key to delete, deletes _old and primary if exists.
|
||||
*
|
||||
* @param unknown $key
|
||||
* @return bool
|
||||
*/
|
||||
function hard_delete( $key, $group = '' ) {
|
||||
return @$this->_memcache->delete( $key );
|
||||
}
|
||||
|
||||
/**
|
||||
* Flushes all data
|
||||
*
|
||||
* @param string $group Used to differentiate between groups of cache values
|
||||
* @return boolean
|
||||
*/
|
||||
function flush( $group = '' ) {
|
||||
// can only flush everything from memcached, no way to flush only
|
||||
// pgcache cache
|
||||
return @$this->_memcache->flush();
|
||||
}
|
||||
|
||||
/**
|
||||
* Checks if engine can function properly in this environment
|
||||
*
|
||||
* @return bool
|
||||
*/
|
||||
public function available() {
|
||||
return class_exists( 'Memcached' );
|
||||
}
|
||||
|
||||
public function get_statistics() {
|
||||
$a = $this->_memcache->getStats();
|
||||
if ( count( $a ) > 0 ) {
|
||||
$keys = array_keys( $a );
|
||||
$key = $keys[0];
|
||||
return $a[$key];
|
||||
}
|
||||
|
||||
return $a;
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns size used by cache
|
||||
*/
|
||||
public function get_stats_size( $timeout_time ) {
|
||||
$size = array(
|
||||
'bytes' => 0,
|
||||
'items' => 0,
|
||||
'timeout_occurred' => false,
|
||||
);
|
||||
|
||||
$key_prefix = $this->get_item_key( '' );
|
||||
$error_occurred = false;
|
||||
|
||||
$server_list = $this->_memcache->getServerList();
|
||||
$n = 0;
|
||||
|
||||
foreach ( $server_list as $server ) {
|
||||
$loader = new Cache_Memcached_Stats( $server['host'], $server['port'] );
|
||||
$slabs = $loader->slabs();
|
||||
if ( !is_array( $slabs ) ) {
|
||||
$error_occurred = true;
|
||||
continue;
|
||||
}
|
||||
|
||||
foreach ( $slabs as $slab_id ) {
|
||||
$cdump = $loader->cachedump( $slab_id );
|
||||
if ( !is_array( $cdump ) )
|
||||
continue;
|
||||
|
||||
foreach ( $cdump as $line ) {
|
||||
$key_data = explode( ' ', $line );
|
||||
if ( !is_array( $key_data ) || count( $key_data ) < 3 )
|
||||
continue;
|
||||
$n++;
|
||||
if ( $n % 10 == 0 ) {
|
||||
$size['timeout_occurred'] = ( time() > $timeout_time );
|
||||
if ( $size['timeout_occurred'] )
|
||||
return $size;
|
||||
}
|
||||
|
||||
$key = $key_data[1];
|
||||
$bytes = substr( $key_data[2], 1 );
|
||||
|
||||
if ( substr( $key, 0, strlen( $key_prefix ) ) == $key_prefix ) {
|
||||
$size['bytes'] += $bytes;
|
||||
$size['items']++;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if ( $error_occurred && $size['items'] <= 0 ) {
|
||||
$size['bytes'] = null;
|
||||
$size['items'] = null;
|
||||
}
|
||||
|
||||
return $size;
|
||||
}
|
||||
|
||||
/**
|
||||
* Used to replace as atomically as possible known value to new one
|
||||
*/
|
||||
public function set_if_maybe_equals( $key, $old_value, $new_value ) {
|
||||
$storage_key = $this->get_item_key( $key );
|
||||
|
||||
$cas = null;
|
||||
$value = @$this->_memcache->get( $storage_key, null, $cas );
|
||||
|
||||
if ( !is_array( $value ) )
|
||||
return false;
|
||||
|
||||
if ( isset( $old_value['content'] ) &&
|
||||
$value['content'] != $old_value['content'] )
|
||||
return false;
|
||||
|
||||
return @$this->_memcache->cas( $cas, $storage_key, $new_value );
|
||||
}
|
||||
|
||||
/**
|
||||
* Use key as a counter and add integet value to it
|
||||
*/
|
||||
public function counter_add( $key, $value ) {
|
||||
if ( $value == 0 )
|
||||
return true;
|
||||
|
||||
$storage_key = $this->get_item_key( $key );
|
||||
$r = @$this->_memcache->increment( $storage_key, $value );
|
||||
if ( !$r ) // it doesnt initialize counter by itself
|
||||
$this->counter_set( $key, 0 );
|
||||
|
||||
return $r;
|
||||
}
|
||||
|
||||
/**
|
||||
* Use key as a counter and add integet value to it
|
||||
*/
|
||||
public function counter_set( $key, $value ) {
|
||||
$storage_key = $this->get_item_key( $key );
|
||||
return @$this->_memcache->set( $storage_key, $value );
|
||||
}
|
||||
|
||||
/**
|
||||
* Get counter's value
|
||||
*/
|
||||
public function counter_get( $key ) {
|
||||
$storage_key = $this->get_item_key( $key );
|
||||
$v = (int)@$this->_memcache->get( $storage_key );
|
||||
|
||||
return $v;
|
||||
}
|
||||
|
||||
public function get_item_key( $name ) {
|
||||
// memcached doesn't survive spaces in a key
|
||||
$key = sprintf( 'w3tc_%d_%s_%d_%s_%s',
|
||||
$this->_instance_id, $this->_host, $this->_blog_id,
|
||||
$this->_module, md5( $name ) );
|
||||
return $key;
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user