Adding possibility to use a different cache-backend for locking and caching

- Renaming *LockDriver to *Lock since it isn't a "driver" anymore

src/Factory/CacheFactory.php

@@ -0,0 +1,101 @@
+<?php
+
+namespace Friendica\Factory;
+
+use Friendica\Core\Cache;
+use Friendica\Core\Cache\ICache;
+use Friendica\Core\Config\Configuration;
+use Friendica\Database\Database;
+use Friendica\Util\BaseURL;
+use Friendica\Util\Profiler;
+use Psr\Log\LoggerInterface;
+
+/**
+ * Class CacheFactory
+ *
+ * @package Friendica\Core\Cache
+ *
+ * A basic class to generate a CacheDriver
+ */
+class CacheFactory
+{
+	/**
+	 * @var string The default cache if nothing set
+	 */
+	const DEFAULT_TYPE = Cache\AbstractCache::TYPE_DATABASE;
+
+	/**
+	 * @var Configuration The configuration to read parameters out of the config
+	 */
+	private $config;
+
+	/**
+	 * @var Database The database connection in case that the cache is used the dba connection
+	 */
+	private $dba;
+
+	/**
+	 * @var string The hostname, used as Prefix for Caching
+	 */
+	private $hostname;
+
+	/**
+	 * @var Profiler The optional profiler if the cached should be profiled
+	 */
+	private $profiler;
+
+	/**
+	 * @var LoggerInterface The Friendica Logger
+	 */
+	private $logger;
+
+	public function __construct(BaseURL $baseURL, Configuration $config, Database $dba, Profiler $profiler, LoggerInterface $logger)
+	{
+		$this->hostname = $baseURL->getHostname();
+		$this->config   = $config;
+		$this->dba      = $dba;
+		$this->profiler = $profiler;
+		$this->logger   = $logger;
+	}
+
+	/**
+	 * This method creates a CacheDriver for the given cache driver name
+	 *
+	 * @param string $type The cache type to create (default is per config)
+	 *
+	 * @return ICache  The instance of the CacheDriver
+	 * @throws \Exception    The exception if something went wrong during the CacheDriver creation
+	 */
+	public function create(string $type = null)
+	{
+		if (empty($type)) {
+			$type = $this->config->get('system', 'cache_driver', self::DEFAULT_TYPE);
+		}
+
+		switch ($type) {
+			case Cache\AbstractCache::TYPE_MEMCACHE:
+				$cache = new Cache\MemcacheCache($this->hostname, $this->config);
+				break;
+			case Cache\AbstractCache::TYPE_MEMCACHED:
+				$cache = new Cache\MemcachedCache($this->hostname, $this->config, $this->logger);
+				break;
+			case Cache\AbstractCache::TYPE_REDIS:
+				$cache = new Cache\RedisCache($this->hostname, $this->config);
+				break;
+			case Cache\AbstractCache::TYPE_APCU:
+				$cache = new Cache\APCuCache($this->hostname);
+				break;
+			default:
+				$cache = new Cache\DatabaseCache($this->hostname, $this->dba);
+		}
+
+		$profiling = $this->config->get('system', 'profiling', false);
+
+		// In case profiling is enabled, wrap the ProfilerCache around the current cache
+		if (isset($profiling) && $profiling !== false) {
+			return new Cache\ProfilerCache($cache, $this->profiler);
+		} else {
+			return $cache;
+		}
+	}
+}