BUGFIX: Fix nodeindex:cleanup command for ES >= 2.0

Author: Nikdro

Classes/Command/NodeIndexCommandController.php

@@ -270,7 +270,7 @@ public function cleanupCommand()
             }
         } catch (\Flowpack\ElasticSearch\Transfer\Exception\ApiException $exception) {
             $response = json_decode($exception->getResponse());
-            $this->logger->log(sprintf('Nothing removed. ElasticSearch responded with status %s, saying "%s"', $response->status, $response->error));
+            $this->logger->log(sprintf('Nothing removed. ElasticSearch responded with status %s, saying "%s: %s"', $response->status, $response->error->type, $response->error->reason));
         }
     }
 }

Classes/Driver/Version2/SystemDriver.php

@@ -21,4 +21,11 @@
  */
 class SystemDriver extends Version1\SystemDriver
 {
+    /**
+     * @inheritDoc
+     */
+    public function status()
+    {
+        return $this->searchClient->request('GET', '/_stats')->getTreatedContent();
+    }
 }