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<?php
/**
* Lock class.
*
* @package automattic/jetpack-sync
*/
namespace Automattic\Jetpack\Sync;
/**
* Lock class
*/
class Lock {
/**
* Prefix of the blog lock transient.
*
* @access public
*
* @var string
*/
const LOCK_PREFIX = 'jp_sync_lock_';
/**
* Default Lifetime of the lock.
*
* @access public
*
* @var int
*/
const LOCK_TRANSIENT_EXPIRY = 15; // Seconds.
/**
* Attempt to lock.
*
* @access public
*
* @param string $name lock name.
* @param int $expiry lock duration in seconds.
*
* @return boolean True if succeeded, false otherwise.
*/
public function attempt( $name, $expiry = self::LOCK_TRANSIENT_EXPIRY ) {
$name = self::LOCK_PREFIX . $name;
$locked_time = get_option( $name );
if ( $locked_time ) {
if ( microtime( true ) < $locked_time ) {
return false;
}
}
update_option( $name, microtime( true ) + $expiry );
return true;
}
/**
* Remove the lock.
*
* @access public
*
* @param string $name lock name.
*/
public function remove( $name ) {
delete_option( self::LOCK_PREFIX . $name );
}
}
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