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<?php
namespace Archivr\LockAdapter;
use Archivr\ConnectionAdapter\ConnectionAdapterInterface;
class ConnectionBasedLockAdapter extends AbstractLockAdapter
{
/**
* @var ConnectionAdapterInterface
*/
protected $connectionAdapter;
public function __construct(ConnectionAdapterInterface $connectionAdapter)
$this->connectionAdapter = $connectionAdapter;
}
protected function doesLockExist(string $name): bool
return $this->connectionAdapter->exists($name . '.lock');
protected function doAcquireLock(string $name): bool
$lockFileName = $this->getLockFileName($name);
$lockLabel = $this->getLockLabel();
if ($this->connectionAdapter->exists($lockFileName))
return false;
$this->connectionAdapter->write($lockFileName, $lockLabel);
return true;
protected function doReleaseLock(string $name)
$this->connectionAdapter->unlink($this->getLockFileName($name));
protected function getLockFileName(string $lockName): string
return $lockName . '.lock';
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