[Cache] Add ability to configure predis client.

jralph · jralph · commit 05c319f5486c · 2018-08-09T14:13:12.000+01:00
When the predis driver is created, there is no current way to
configure the predis client options (such as setting the cluster
mode to redis). This merge allows you to add a predis_options
parameter to the dsn to allow configuration of options.
diff --git a/src/Symfony/Component/Cache/CHANGELOG.md b/src/Symfony/Component/Cache/CHANGELOG.md
@@ -9,6 +9,7 @@ CHANGELOG
  * added sub-second expiry accuracy for backends that support it
  * added support for phpredis 4 `compression` and `tcp_keepalive` options
  * added automatic table creation when using Doctrine DBAL with PDO-based backends
+ * added support for a `predis_options` query parameter array in the redis dsn.
  * throw `LogicException` when `CacheItem::tag()` is called on an item coming from a non tag-aware pool
  * deprecated `CacheItem::getPreviousTags()`, use `CacheItem::getMetadata()` instead
  * deprecated the `AbstractAdapter::createSystemCache()` method
diff --git a/src/Symfony/Component/Cache/Traits/RedisTrait.php b/src/Symfony/Component/Cache/Traits/RedisTrait.php
@@ -167,7 +167,10 @@ public static function createConnection($dsn, array $options = array())
             $params['scheme'] = $scheme;
             $params['database'] = $params['dbindex'] ?: null;
             $params['password'] = $auth;
-            $redis = new $class((new Factory())->create($params));
+
+            $predisOptions = false !== isset($params['predis_options']) && true === \is_array($params['predis_options']) ? $params['predis_options'] : array();
+
+            $redis = new $class((new Factory())->create($params), $predisOptions);
         } elseif (class_exists($class, false)) {
             throw new InvalidArgumentException(sprintf('"%s" is not a subclass of "Redis" or "Predis\Client"', $class));
         } else {
