Enable Redis async import

- using javibravo/simpleue
- internal config value are now `import_with_redis` & `import_with_rabbit` which are more clear
- if both option are enable rabbit will be choosen
- services imports related to async are now splitted into 2 files: `redis.yml` & `rabbit.yml`
-

src/Wallabag/ImportBundle/Redis/Producer.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace Wallabag\ImportBundle\Redis;
+
+use OldSound\RabbitMqBundle\RabbitMq\ProducerInterface;
+use Simpleue\Queue\RedisQueue;
+
+/**
+ * This is a proxy class for "Simpleue\Queue\RedisQueue".
+ * It allow us to use the same way to publish a message between RabbitMQ & Redis: publish().
+ *
+ * It implements the ProducerInterface of RabbitMQ (yes it's ugly) so we can have the same
+ * kind of class which implements the same interface.
+ * So we can inject either a RabbitMQ producer or a Redis producer with the same signature
+ */
+class Producer implements ProducerInterface
+{
+    private $queue;
+
+    public function __construct(RedisQueue $queue)
+    {
+        $this->queue = $queue;
+    }
+
+    /**
+     * Publish a message in the Redis queue.
+     *
+     * @param string $msgBody
+     * @param string $routingKey           NOT USED
+     * @param array  $additionalProperties NOT USED
+     */
+    public function publish($msgBody, $routingKey = '', $additionalProperties = array())
+    {
+        $this->queue->sendJob($msgBody);
+    }
+}