firstcommit

2018-06-21 17:59:40 +02:00
commit 967f6c0e3e
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+<?php
+/**
+ * @package    Grav\Plugin\Login
+ *
+ * @copyright  Copyright (C) 2014 - 2017 RocketTheme, LLC. All rights reserved.
+ * @license    MIT License; see LICENSE file for details.
+ */
+namespace Grav\Plugin\Login;
+
+use Doctrine\Common\Cache\FilesystemCache;
+use Grav\Common\Grav;
+
+/**
+ * PSR-16 forward compatible cache.
+ * @package Grav\Plugin\Login
+ */
+class LoginCache
+{
+    /**
+     * @var FilesystemCache
+     */
+    protected $driver;
+
+    protected $lifetime;
+
+    /**
+     * @param string $namespace
+     * @param null|int $defaultLifetime
+     * @throws \InvalidArgumentException
+     */
+    public function __construct($namespace, $defaultLifetime = null)
+    {
+        // Setup cache
+        $this->lifetime = (int)$defaultLifetime;
+        $this->driver = new FilesystemCache(Grav::instance()['locator']->findResource('cache://login/' . $namespace, true, true));
+    }
+
+    /**
+     * Fetches a value from the cache.
+     *
+     * @param string $key     The unique key of this item in the cache.
+     * @param mixed  $default Default value to return if the key does not exist.
+     *
+     * @return mixed The value of the item from the cache, or $default in case of cache miss.
+     */
+    public function get($key, $default = null)
+    {
+        $value = $this->driver->fetch($key);
+
+        // Doctrine cache does not differentiate between no result and cached 'false'. Make sure that we do.
+        return $value !== false || $this->driver->contains($key) ? $value : $default;
+    }
+
+    /**
+     * Persists data in the cache, uniquely referenced by a key with an optional expiration TTL time.
+     *
+     * @param string                $key   The key of the item to store.
+     * @param mixed                 $value The value of the item to store, must be serializable.
+     * @param null|int              $ttl   Optional. The TTL value of this item.
+     *
+     * @return bool True on success and false on failure.
+     */
+    public function set($key, $value, $ttl = null)
+    {
+        $ttl = $ttl !== null ? (int)$ttl : $this->lifetime;
+
+        return $this->driver->save($key, $value, $ttl);
+    }
+
+    /**
+     * Determines whether an item is present in the cache.
+     *
+     * @param string $key The cache item key.
+     *
+     * @return bool
+     */
+    public function has($key)
+    {
+        return $this->driver->contains($key);
+    }
+
+    /**
+     * Delete an item from the cache by its unique key.
+     *
+     * @param string $key The unique cache key of the item to delete.
+     *
+     * @return bool True if the item was successfully removed. False if there was an error.
+     */
+    public function delete($key)
+    {
+        return $this->driver->delete($key);
+    }
+
+    /**
+     * Wipes clean the entire cache's keys.
+     *
+     * @return bool True on success and false on failure.
+     */
+    public function clear()
+    {
+        return $this->driver->flushAll();
+    }
+}