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<?php
/**
* Matomo - free/libre analytics platform
*
* @link https://matomo.org
* @license https://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*/
namespace Piwik\Concurrency;
interface LockBackend
{
/**
* Returns lock keys matching a pattern.
*
* @param $pattern
* @return string[]
*/
public function getKeysMatchingPattern($pattern);
/**
* Set a key value if the key is not already set.
*
* @param $lockKey
* @param $lockValue
* @param $ttlInSeconds
* @return mixed
*/
public function setIfNotExists($lockKey, $lockValue, $ttlInSeconds);
/**
* Get the lock value for a key if any.
*
* @param $lockKey
* @return mixed
*/
public function get($lockKey);
/**
* Delete the lock with key = $lockKey if the lock has the given value.
*
* @param $lockKey
* @param $lockValue
* @return mixed
*/
public function deleteIfKeyHasValue($lockKey, $lockValue);
/**
* Update expiration for a lock if the lock with the specified key has the given value.
*
* @param $lockKey
* @param $lockValue
* @param $ttlInSeconds
* @return mixed
*/
public function expireIfKeyHasValue($lockKey, $lockValue, $ttlInSeconds);
}