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<?php
namespace TH\Lock;
use Psr\Log\LoggerInterface;
use Psr\Log\NullLogger;
class LockSet implements Lock
{
private $locks = [];
private $logger;
/**
* @param Lock[] $locks array of Lock
* @param LoggerInterface|null $logger
*/
public function __construct(
array $locks,
LoggerInterface $logger = null
) {
if (empty($locks)) {
throw new RuntimeException("Lock set cannot be empty");
}
$this->locks = $locks;
$this->logger = $logger ?: new NullLogger;
* @inherit
public function acquire()
$acquiredLocks = [];
try {
foreach ($this->locks as $lock) {
$lock->acquire();
$acquiredLocks[] = $lock;
} catch (RuntimeException $e) {
foreach ($acquiredLocks as $lock) {
$lock->release();
throw $e;
public function release()
$exceptions = [];
$exceptions[] = $e;
if (!empty($exceptions)) {
throw new AggregationException($exceptions, "Some locks were not released");
public function __destruct()
$this->release();
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