symfony/lock 추가

vendor/symfony/lock/Key.php

@@ -0,0 +1,109 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Lock;
+
+/**
+ * Key is a container for the state of the locks in stores.
+ *
+ * @author Jérémy Derussé <jeremy@derusse.com>
+ */
+final class Key
+{
+    private $resource;
+    private $expiringTime;
+    private $state = array();
+
+    /**
+     * @param string $resource
+     */
+    public function __construct($resource)
+    {
+        $this->resource = (string) $resource;
+    }
+
+    public function __toString()
+    {
+        return $this->resource;
+    }
+
+    /**
+     * @param string $stateKey
+     *
+     * @return bool
+     */
+    public function hasState($stateKey)
+    {
+        return isset($this->state[$stateKey]);
+    }
+
+    /**
+     * @param string $stateKey
+     * @param mixed  $state
+     */
+    public function setState($stateKey, $state)
+    {
+        $this->state[$stateKey] = $state;
+    }
+
+    /**
+     * @param string $stateKey
+     */
+    public function removeState($stateKey)
+    {
+        unset($this->state[$stateKey]);
+    }
+
+    /**
+     * @param $stateKey
+     *
+     * @return mixed
+     */
+    public function getState($stateKey)
+    {
+        return $this->state[$stateKey];
+    }
+
+    public function resetLifetime()
+    {
+        $this->expiringTime = null;
+    }
+
+    /**
+     * @param float $ttl the expiration delay of locks in seconds
+     */
+    public function reduceLifetime($ttl)
+    {
+        $newTime = microtime(true) + $ttl;
+
+        if (null === $this->expiringTime || $this->expiringTime > $newTime) {
+            $this->expiringTime = $newTime;
+        }
+    }
+
+    /**
+     * Returns the remaining lifetime.
+     *
+     * @return float|null Remaining lifetime in seconds. Null when the key won't expire.
+     */
+    public function getRemainingLifetime()
+    {
+        return null === $this->expiringTime ? null : $this->expiringTime - microtime(true);
+    }
+
+    /**
+     * @return bool
+     */
+    public function isExpired()
+    {
+        return null !== $this->expiringTime && $this->expiringTime <= microtime(true);
+    }
+}