Moved cache drivers outside core to extensions (plugins)

plugins/cache-redis/Predis/Configuration/ClusterOption.php

@@ -0,0 +1,76 @@
+<?php
+
+/*
+ * This file is part of the Predis package.
+ *
+ * (c) Daniele Alessandri <suppakilla@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Predis\Configuration;
+
+use Predis\Connection\Aggregate\ClusterInterface;
+use Predis\Connection\Aggregate\PredisCluster;
+use Predis\Connection\Aggregate\RedisCluster;
+
+/**
+ * Configures an aggregate connection used for clustering
+ * multiple Redis nodes using various implementations with
+ * different algorithms or strategies.
+ *
+ * @author Daniele Alessandri <suppakilla@gmail.com>
+ */
+class ClusterOption implements OptionInterface
+{
+    /**
+     * Creates a new cluster connection from on a known descriptive name.
+     *
+     * @param OptionsInterface $options Instance of the client options.
+     * @param string           $id      Descriptive identifier of the cluster type (`predis`, `redis-cluster`)
+     *
+     * @return ClusterInterface|null
+     */
+    protected function createByDescription(OptionsInterface $options, $id)
+    {
+        switch ($id) {
+            case 'predis':
+            case 'predis-cluster':
+                return new PredisCluster();
+
+            case 'redis':
+            case 'redis-cluster':
+                return new RedisCluster($options->connections);
+
+            default:
+                return;
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function filter(OptionsInterface $options, $value)
+    {
+        if (is_string($value)) {
+            $value = $this->createByDescription($options, $value);
+        }
+
+        if (!$value instanceof ClusterInterface) {
+            throw new \InvalidArgumentException(
+                "An instance of type 'Predis\Connection\Aggregate\ClusterInterface' was expected."
+            );
+        }
+
+        return $value;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getDefault(OptionsInterface $options)
+    {
+        return new PredisCluster();
+    }
+}