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<?php |
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namespace TH\Lock; |
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use Psr\Log\LoggerInterface; |
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use Psr\Log\NullLogger; |
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class FileFactory implements Factory |
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{ |
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private $lock_dir; |
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private $hash_algo; |
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private $logger; |
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/** |
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* Create a new FileFactory |
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* @param string $lock_dir directory where lock files will be created |
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* @param string $hash_algo hashing algotithms used to generate lock file name from identifier |
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* see http://php.net/manual/en/function.hash-algos.php |
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* @param LoggerInterface|null $logger |
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*/ |
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public function __construct($lock_dir, $hash_algo = 'sha256', LoggerInterface $logger = null) |
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{ |
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$this->lock_dir = $lock_dir; |
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$this->hash_algo = $hash_algo; |
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$this->logger = $logger ?: new NullLogger; |
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} |
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/** |
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* Create a FileLock for $resource |
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* @param string $resource resource identifier |
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* @param boolean $exclusive true for an exclusive lock, false for shared one |
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* @param boolean $blocking true to wait for lock to be available, false to throw exception instead of waiting |
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* @return FileLock |
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*/ |
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public function create( |
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$resource, |
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$exclusive = FileLock::EXCLUSIVE, |
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$blocking = FileLock::NON_BLOCKING |
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) { |
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if (!is_dir($this->lock_dir)) { |
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mkdir($this->lock_dir, 0777, true); |
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} |
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$hash = hash($this->hash_algo, serialize($resource)); |
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$path = "{$this->lock_dir}/$hash.lock"; |
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return new FileLock($path, $exclusive, $blocking, true, $this->logger); |
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} |
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} |
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texthtml /
php-lock
