PDF rausgenommen

msd2/tracking/piwik/core/DeviceDetectorCache.php

@@ -0,0 +1,95 @@
+<?php
+/**
+ * Piwik - free/libre analytics platform
+ *
+ * @link http://piwik.org
+ * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
+ *
+ */
+namespace Piwik;
+
+use Piwik\Cache as PiwikCache;
+
+/**
+ * Caching class used for DeviceDetector caching
+ *
+ * Combines Piwik\CacheFile with an additional caching in static property
+ *
+ * Static caching speeds up multiple detections in one request, which is the case when sending bulk requests
+ */
+class DeviceDetectorCache implements \DeviceDetector\Cache\Cache
+{
+    protected static $staticCache = array();
+
+    private $cache;
+    private $ttl;
+
+    public function __construct($ttl = 300)
+    {
+        $this->ttl   = (int) $ttl;
+        $this->cache = PiwikCache::getEagerCache();
+    }
+
+    /**
+     * Function to fetch a cache entry
+     *
+     * @param string $id The cache entry ID
+     * @return array|bool  False on error, or array the cache content
+     */
+    public function fetch($id)
+    {
+        if (empty($id)) {
+            return false;
+        }
+
+        if (array_key_exists($id, self::$staticCache)) {
+            return self::$staticCache[$id];
+        }
+
+        if (!$this->cache->contains($id)) {
+            return false;
+        }
+
+        return $this->cache->fetch($id);
+    }
+
+    /**
+     * A function to store content a cache entry.
+     *
+     * @param string $id The cache entry ID
+     * @param array $content The cache content
+     * @throws \Exception
+     * @return bool  True if the entry was successfully stored
+     */
+    public function save($id, $content, $ttl=0)
+    {
+        if (empty($id)) {
+            return false;
+        }
+
+        self::$staticCache[$id] = $content;
+
+        return $this->cache->save($id, $content, $this->ttl);
+    }
+
+    public function contains($id)
+    {
+        return !empty(self::$staticCache[$id]) && $this->cache->contains($id);
+    }
+
+    public function delete($id)
+    {
+        if (empty($id)) {
+            return false;
+        }
+
+        unset(self::$staticCache[$id]);
+
+        return $this->cache->delete($id);
+    }
+
+    public function flushAll()
+    {
+        return $this->cache->flushAll();
+    }
+}